IEC 62148-2:2010

Fibre optic active components and devices - Package and interface standards - Part 2: SFF 10-pin transceivers

IEC 62148-2:2010 covers the physical interface specifications for the SFF MT-RJ/LC/MU duplex 10-pin fibre optic transceiver module family. With respect to the previous edition, this edition includes 10-pin SFF-LC, and SFF MU devices. It also cancels and replaces the first edition of IEC 62148-7 and the first edition of IEC 62148-9.
This publication is to be read in conjunction with IEC 62148-1:2002.

Composants et dispositifs actifs en fibres optiques - Normes de boîtier et d'interface - Partie 2: Emetteurs-récepteurs SFF à 10 broches

La CEI 62148-2:2010 couvre les spécifications de l'interface physique pour la famille des modules d'émetteurs-récepteurs à fibres optiques SFF MT-RJ/LC/MU duplex à 10 broches. Par rapport à l'édition précédente, la présente édition intègre les dispositifs SFF-LC et SFF MU à 10 broches. Elle annule et remplace également la première édition de la CEI 62148-7 et et la première édition de la CEI 62148-9.
Cette publication doit être lue conjointement avec la CEI 62148-1:2002.

General Information

• Status: Published
• Publication Date: 18-Nov-2024
• ICS: 33.180.01 - Fibre optic systems in general
• Technical Committee: SC 86C - Fibre optic systems, sensing and active devices
• Current Stage: PPUB - Publication issued
• Start Date: 15-Dec-2010
• Completion Date: 15-Jan-2011

Relations

• Replaces: IEC 62148-7:2003 - Fibre optic active components and devices - Package and interface standards - Part 7: SFF LC 10-pin transceivers
• Effective Date: 05-Sep-2023
• Replaces: IEC 62148-9:2003 - Fibre optic active components and devices - Package and interface standards - Part 9: SFF MU duplex 10-pin transceivers
• Effective Date: 05-Sep-2023
• Replaces: IEC 62148-9:2003/COR1:2003 - Corrigendum 1 - Fibre optic active components and devices - Package and interface standards - Part 9: SFF MU duplex 10-pin transceivers
• Effective Date: 05-Sep-2023
• Amended By: IEC 62148-2:2010/AMD1:2024 - Amendment 1 - Fibre optic active components and devices - Package and interface standards - Part 2: SFF 10-pin transceivers
• Effective Date: 15-Dec-2023
• Revises: IEC 62148-2:2003/COR1:2003 - Corrigendum 1 - Fibre optic active components and devices - Package and interface standards - Part 2: SFF MT-RJ 10-pin transceivers
• Effective Date: 05-Sep-2023
• Revises: IEC 62148-2:2003 - Fibre optic active components and devices - Package and interface standards - Part 2: SFF MT-RJ 10-pin transceivers
• Effective Date: 05-Sep-2023

Overview

IEC 62148-2:2010 (consolidated with Amendment 1, 2024) defines the physical interface and package specifications for the SFF 10‑pin fibre optic transceiver family. It covers small form factor (SFF) duplex 10‑pin transceivers that use the MT‑RJ, LC and MU duplex optical connector interfaces (including added support for SFF‑LC and SFF‑MU). The standard is intended to ensure mechanical interchangeability at the printed‑circuit board (PCB) level and for panel‑mounting requirements. IEC 62148-2 should be read in conjunction with IEC 62148‑1 (general guidance).

Key topics and technical requirements

• Scope and classification: Defines the SFF 10‑pin transceiver family and classifies the module as Type 1 per IEC 62148‑1.
• Optical connector interfaces: Applies to MT‑RJ, LC and MU duplex receptacles; detailed receptacle dimensions and optical port assignment are provided in Clause 7 and corresponding figures.
• Electrical interface and pin assignments:
  • Pin numbering is shown viewed from the top with pins underneath.
  • Receiver pins (1–5): Vee (receiver ground), Vcc (receiver power), SD (signal detect), RD–, RD+.
  • Transmitter pins (6–10): Vcc (transmitter power), Vee (transmitter ground), TDis (transmitter disable, optional for lasers), TD+, TD–.
• Mechanical features:
  • Case outlines, PCB footprint dimensions and mounting recommendations are specified (drawings in Figures 2–5).
  • Mounting studs for mechanical attachment and optional chassis grounding.
  • Housing leads for additional signal/chassis grounding to improve EMC/EMI and signal integrity.
• Interchangeability: Physical dimensions and terminal assignments are specified to enable mechanical replacement and interoperability across manufacturers.
• Normative references: Linked connector standards - IEC 61754‑6 (MU), IEC 61754‑18 (MT‑RJ), IEC 61754‑20 (LC) - plus IEC 62148‑1 for guidance.

Applications and users

IEC 62148‑2 is directly useful for:

• Fibre optic transceiver manufacturers specifying SFF MT‑RJ/LC/MU 10‑pin modules
• PCB layout and mechanical design engineers implementing transceiver footprints and panel mounts
• Network equipment vendors and system integrators ensuring module interchangeability
• Compliance/test labs verifying physical and mechanical conformity
• Procurement and product teams requiring standard‑compliant optical transceiver specifications

Related standards

• IEC 62148‑1 - Fibre optic active components and devices: General and guidance
• IEC 61754‑6 - Type MU connector family
• IEC 61754‑18 - Type MT‑RJ connector family
• IEC 61754‑20 - Type LC connector family

Keywords: IEC 62148-2, SFF 10‑pin transceivers, MT‑RJ, LC, MU, SFF-LC, SFF-MU, fibre optic transceiver, PCB footprint, pin assignments, physical interface, small form factor.

Standards Content (Sample)

IEC 62148-2 ®
Edition 2.1 2024-11
CONSOLIDATED VERSION
INTERNATIONAL
STANDARD
colour
inside
Fibre optic active components and devices – Package and interface standards –
Part 2: SFF 10-pin transceivers

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IEC 62148-2 ®
Edition 2.1 2024-11
CONSOLIDATED VERSION
INTERNATIONAL
STANDARD
colour
inside
Fibre optic active components and devices – Package and interface standards –
Part 2: SFF 10-pin transceivers
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 33.180.01 ISBN 978-2-8327-0041-9
REDLINE VERSION – 2 – IEC 62148-2:2010+AMD1:2024 CSV
 IEC 2024
CONTENTS
FOREWORD . 3
INTRODUCTION . 5
1 Scope . 6
2 Normative references . 6
3 Terms, definitions and abbreviations . 6
3.1 Terms and definitions . 6
3.2 Abbreviations . 6
4 Classification . 6
5 Specification of the optical connector interface . 7
6 Electrical interface . 7
6.1 General . 7
6.2 Numbering of electrical terminals . 7
6.3 Electrical terminal assignment . 8
7 Outline and footprint . 8
7.1 Drawings of case outline . 8
7.2 Optical receptacle . 14
7.3 Drawings of case footprint . 15

Figure 1 – Electrical terminal numbering assignments (viewed from above with pins
underneath) . 7
Figure 2 – Case outline of the SFF MT-RJ 10-pin transceiver . 9
Figure 3 – Case outline of the SFF LC 10-pin transceiver . 11
Figure 4 – Case outline of the SFF MU duplex 10-pin transceiver . 13
Figure 5 – Case footprint . 15

Table 1 – Transceiver receiver pin-function definitions . 8
Table 2 – Transceiver transmitter pin-function definitions. 8
Table 3 – Key to Figure 2 . 10
Table 4 – Key to Figure 3 . 12
Table 5 – Key to Figure 4 . 14
Table 6 – Key to Figure 5 . 16

 IEC 2024
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
FIBRE OPTIC ACTIVE COMPONENTS AND DEVICES –
PACKAGE AND INTERFACE STANDARDS –

Part 2: SFF 10-pin transceivers

FOREWORD
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This consolidated version of the official IEC Standard and its amendment has been
prepared for user convenience.
IEC 62148-2 edition 2.1 contains the second edition (2010-12) [documents 86C/975/FDIS
and 86C/981/RVD] and its amendment 1 (2024-11) [documents 86C/1922/CDV and
86C/1939/RVC].
In this Redline version, a vertical line in the margin shows where the technical content
is modified by amendment 1. Additions are in green text, deletions are in strikethrough
red text. A separate Final version with all changes accepted is available in this
publication.
REDLINE VERSION – 4 – IEC 62148-2:2010+AMD1:2024 CSV
 IEC 2024
International Standard IEC 62148-2 has been prepared by subcommittee 86C: Fibre optic
systems and active devices, of IEC technical committee 86: Fibre optics.
This standard should be read in conjunction with IEC 62148-1.
This second edition cancels and replaces the first edition published in 2003. It constitutes a
technical revision.
With respect to the previous edition, this edition includes 10-pin SFF-LC, and SFF MU devices.
It also cancels and replaces the first edition of IEC 62148-7 and the first edition of
IEC 62148-9.
This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.
A list of all parts of the IEC 62148 series can be found, under the general title Fibre optic
active components and devices – Package and interface standards, on the IEC website.
The committee has decided that the contents of this document and its amendment will remain
unchanged until the stability date indicated on the IEC website under webstore.iec.ch in the
data related to the specific document. At this date, the document will be
• reconfirmed,
• withdrawn, or
• revised.
IMPORTANT – The 'colour inside' logo on the cover page of this publication indicates
that it contains colours which are considered to be useful for the correct
understanding of its contents. Users should therefore print this document using a
colour printer.
 IEC 2024
INTRODUCTION
Fibre optic transceivers are used to convert electrical signals into optical signals and vice
versa. This standard covers the physical interface for a 10-pin small form factor (SFF)
transceiver. This transceiver is designed for use with the SFF MU/MT-RJ/LC duplex optical
connector and with through-hole printed circuit-board applications.

REDLINE VERSION – 6 – IEC 62148-2:2010+AMD1:2024 CSV
 IEC 2024
FIBRE OPTIC ACTIVE COMPONENTS AND DEVICES –
PACKAGE AND INTERFACE STANDARDS –

Part 2: SFF 10-pin transceivers

1 Scope
This part of IEC 62148 covers the physical interface specifications for the SFF MT-RJ/LC/MU
duplex 10-pin fibre optic transceiver module family.
The intent of this standard is to adequately specify the physical requirements of an optical
transceiver that will enable mechanical interchangeability of transceivers complying with this
standard both at the printed circuit wiring board and for any panel-mounting requirement.
2 Normative references
The following referenced documents are indispensable for the application of this document.
For dated references, only the edition cited applies. For undated references, the latest edition
of the referenced document (including any amendments) applies.
IEC 61754-6, Fibre optic connector interfaces – Part 6: Type MU connector family
IEC 61754-18, Fibre optic connector interfaces – Part 18: Type MT-RJ connector family
IEC 61754-20, Fibre optic connector interfaces – Part 20:Type LC connector family
IEC 62148-1, Fibre optic active components and devices – Package and interface standards –
Part 1: General and guidance
3 Terms, definitions and abbreviations
For the purposes of this document, the following terms, definitions and abbreviations apply.
3.1 Terms and definitions
3.1.1
small form factor optical transceiver
a compact optical digital signal transceiver whose package has the same cross sectional
outline as the receptacle of an electrical connector compliant with the IEC 60603-7 series
3.2 Abbreviations
SFF small form factor
4 Classification
The transceiver described in this standard is classified as type 1 according to IEC 62148-1.

 IEC 2024
5 Specification of the optical connector interface
This standard applies to the MT-RJ/LC/MU duplex optical connector interface. Detailed
dimensions of the optical receptacle are provided in Clause 7.
Assignment of the optical transmit and receive ports is aligned to the electrical pins. One-half
of the module is the transmit side and the other is the receive side. Assignments are shown
in Figure 1.
6 Electrical interface
6.1 General
The electrical interface in this standard defines only the basic functionality of each pin.
6.2 Numbering of electrical terminals
Pin numbering assignments are shown in Figure 1 (viewed from the top of the module with
pins underneath).
Tx
10  9  8  7  6   HL
MS   HL
Rx
MS  HL
1  2  3  4  5   HL
IEC  2853/10
Key
Rx: receiver section
Tx: transmitter section
Key
HL housing leads
MS mounting studs
Rx receiver section
Tx transmitter section
Figure 1 – Electrical terminal numbering assignments
(viewed from above with pins underneath)

REDLINE VERSION – 8 – IEC 62148-2:2010+AMD1:2024 CSV
 IEC 2024
6.3 Electrical terminal assignment
Table 1 – Transceiver receiver pin-function definitions
10-pin
Symbol Functional description
part
Mounting studs
The mounting studs are provided for transceiver mechanical attachment to the circuit
a
MS MS
board. They may also provide an optional connection of the transceiver to the equipment
chassis ground
Housing leads
HL HL
The optional transceiver housing leads may be provided for additional signal grounding.
These additional grounds may improve signal integrity, EMC or EMI performance
1 Vee Receiver signal ground
r
2 Vcc Receiver power supply
r
3 SD Signal detect
4 RD- Received data out bar
5 RD+ Received data out
a
The holes in the circuit board shall be tied to the chassis ground.

Table 2 – Transceiver transmitter pin-function definitions
10-pin
Symbol Functional description
part
Mounting studs
The mounting studs are provided for transceiver mechanical attachment to the circuit board.
a
MS MS
They may also provide an optional connection of the transceiver to the equipment chassis
ground
Housing leads
HL HL
The optional transceiver housing leads may be provided for additional signal grounding.
These additional grounds may improve signal integrity, EMC or EMI performance
6 Vcc Transmitter power supply
t
7 Vee Transmitter signal ground
t
b
8 TDis Transmitter disable: optional feature
9 TD+ Transmitter data in
10 TD− Transmitter data in bar
a
The holes in the circuit board shall be tied to the chassis ground.
b
Optional use for laser-based products only.

7 Outline and footprint
7.1 Drawings of case outline
Drawings of the case outline as well as the dimensions are given in Figures 2, 3 and 4.

 IEC 2024
4×
6× ∅K
0,36
∅0,2
10× ∅J
0,36
∅0,1
IEC  2854/10
Figure 2 – Case outline of the SFF MT-RJ 10-pin transceiver

REDLINE VERSION – 10 – IEC 62148-2:2010+AMD1:2024 CSV
 IEC 2024
Table 3 – Key to Figure 2
Dimensions
mm
Reference Remarks
Minimum Maximum
A 10,16 Basic dimension
B 1,78 Basic dimension
C 7,59 Basic dimension
D 17,78 Basic dimension
E 13,59
F 9,80
G 49,56 Reference dimension
H 1,90 See Note 7
J 0,41 0,61 Diameter in case of rod
pins (See Note 3)
K 0,97 1,07 Diameter in case of rod
pins (See Note 4)
M 3,56 Basic dimension
N 13,34 Basic dimension
P 7,11 Basic dimension
R 2,92
S 37,56
T 12,00
U 0,30 See Note 8
V 4,57 Basic dimension
W 1,70 2,30
EE 9,60
FF 9,30
HH 1,90 See Note 7
UU 0,30 See Note 8
NOTE 1 Defines the space available for the MT-RJ optical receptacle.
NOTE 2 All 16 pins and posts are to be treated as a single pattern.
NOTE 3 Quadratic prism whose cross section is less than the quadrangle inscribed in the circle
which diameter is “J”.
NOTE 4 Quadratic prism whose cross section is less than the quadrangle inscribed in the circle
which diameter is “K”.
NOTE 5 Four housing leads are additional signal grounds to enhance the tolerance of
Electromagnetic immunity and Electromagnetic compatibility.
NOTE 6 Two mounting studs are recommended to be tied to the chassis ground.
NOTE 7 H+HH is less than 3,63.
NOTE 8 U+UU is less than 0,45.

 IEC 2024
444× x x  BB
CC DD
6× ∅K
66×φ×φKK
BB
0,0.0.363636 ZZ   XX
UUUU
HHHH
PP
MM
∅φφ00.0.,222 MM ZZ
NN AA EE
101010××φ×φ ∅J JJ
XX
VV
YY
UU
HH
0,0.0.363636 ZZ  X X
TT
NNotote 1e 1
∅φφ00.0.,111 MM ZZ
GG
SS
FF
RR
ZZ
JJ
NNotote 6e 6 NNotote 5e 5
NNotote 5e 5
KK
IEC  2855/10
Figure 3 – Case outline of the SFF LC 10-pin transceiver

REDLINE VERSION – 12 – IEC 62148-2:2010+AMD1:2024 CSV
 IEC 2024
Table 4 – Key to Figure 3
Dimensions
mm
Reference Remarks
Minimum Maximum
A 10,16 Basic dimension
B 1,78 Basic dimension
C 7,59 Basic dimension
D 17,78 Basic dimension
E 13,59
F 9,80
G 49,56 Reference dimension
H 1,90 See Note 7
J 0,41 0,61 Diameter in case of rod
pins (See Note 3)
K 0,97 1,07 Diameter in case of rod
pins (See Note 4)
M 3,56 Basic dimension
N 13,34 Basic dimension
P 7,11 Basic dimension
R 2,92
S 37,56
T 12,00
U 0,30 See Note 8
V 4,57 Basic dimension
HH 1,90 See Note 7
UU 0,30 See Note 8
NOTE 1 Defines the space available for the LC optical receptacle.
NOTE 2 All 16 pins and posts are to be treated as a single pattern.
NOTE 3 Quadratic prism whose cross section is less than the quadrangle inscribed in the circle
which diameter is “J”.
NOTE 4 Quadratic prism whose cross section is less than the quadrangle inscribed in the circle
which diameter is “K”.
NOTE 5 Four housing leads are additional signal grounds to enhance the tolerance of
Electromagnetic immunity and Electromagnetic compatibility.
NOTE 6 Two mounting studs are recommended to be tied to the chassis ground.
NOTE 7 H+HH is less than 3,63.
NOTE 8 U+UU is less than 0,45.

 IEC 2024
444× x x  BB
CC DD
6× ∅K
66×φ×φKK
BB
0,0.0.363636 ZZ   XX
UUUU
HHHH
PP
MM
φφ∅00.0.,222 MM ZZ
NN AA EE
101010××φ×φ ∅JJJ
XX
VV
YY
UU
HH
0,0.0.363636 ZZ  X X
TT
NNotote 1e 1
∅φφ00.0.,111 MM ZZ
GG
SS
FF
RR
ZZ
JJ
NNotote 6e 6 NNotote 5e 5
NNotote 5e 5
KK
IEC  2856/10
Figure 4 – Case outline of the SFF MU duplex 10-pin transceiver

REDLINE VERSION – 14 – IEC 62148-2:2010+AMD1:2024 CSV
 IEC 2024
Table 5 – Key to Figure 4
Dimensions
mm
Reference Remarks
Minimum Maximum
A 10,16 Basic dimension
B 1,78 Basic dimension
C 7,59 Basic dimension
D 17,78 Basic dimension
E 13,59
F 9,80
G 49,56 Reference dimension
H 1,90 See Note 7
J 0,41 0,61 Diameter in case of rod
pins (See Note 3)
K 0,97 1,07 Diameter in case of rod
pins (See Note 4)
M 3,56 Basic dimension
N 13,34 Basic dimension
P 7,11 Basic dimension
R 2,92
S 37,56
T 12,00
U 0,30 See Note 8
V 4,57 Basic dimension
HH 1,90 See Note 7
UU 0,30 See Note 8
NOTE 1 Defines the space available for the MU optical receptacle.
NOTE 2 All 16 pins and posts are to be treated as a single pattern.
NOTE 3 Quadratic prism whose cross section is less than the quadrangle inscribed in the circle
which diameter is “J”.
NOTE 4 Quadratic prism whose cross section is less than the quadrangle inscribed in the circle
which dia
...

IEC 62148-2 ®
Edition 2.0 2010-12
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Fibre optic active components and devices – Package and interface standards –
Part 2: SFF 10-pin transceivers

Composants et dispositifs actifs en fibres optiques – Normes de boîtier et
d’interface –
Partie 2: Emetteurs-récepteurs SFF à 10 broches

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IEC 62148-2 ®
Edition 2.0 2010-12
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Fibre optic active components and devices – Package and interface standards –
Part 2: SFF 10-pin transceivers

Composants et dispositifs actifs en fibres optiques – Normes de boîtier et
d’interface –
Partie 2: Emetteurs-récepteurs SFF à 10 broches

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
P
CODE PRIX
ICS 33.180.01 ISBN 978-2-88912-297-4
– 2 – 62148-2 Ó IEC:2010
CONTENTS
FOREW ORD . 3
INTRODUCTION . 5
1 Sc o pe . 6
2 Normative references . 6
3 Terms, definitions and abbreviations. 6
3.1 Terms and definitions . 6
3.2 Abbrev iations. 6
4 Classification . 6
5 Specification of the optical connector interface . 7
6 Electrical interface . 7
6.1 Ge n eral . 7
6.2 Numbering of electrical terminals . 7
6.3 Electrical terminal assignment . 7
7 Outline and footprint . 8
7.1 Drawings of case outline . 8
7.2 Optical receptacle . 14
7.3 Drawings of case footprint . 15

Figure 1 – Electrical terminal numbering assignments (viewed from above with pins
underneath) . 7
Figure 2 – Case outline of the SFF MT-RJ 10-pin transceiver . 9
Figure 3 – Case outline of the SFF LC 10-pin transceiver . 11
Figure 4 – Case outline of the SFF MU duplex 10-pin transceiver . 13
Figure 5 – Case footprint . 15

Table 1 – Transceiver receiver pin-function definitions . 7
Table 2 – Transceiver transmitter pin-function definitions . 8
Table 3 – Key to Figure 2 . 10
Table 4 – Key to Figure 3 . 12
Table 5 – Key to Figure 4 . 14
Table 6 – Key to Figure 5 . 16

62148-2 Ó IEC:2010 – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
FIBRE OPTIC ACTIVE COMPONENTS AND DEVICES –
PACKAGE AND INTERFACE STANDARDS –

Part 2: SFF 10-pin transceivers

FOREWORD
1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
all national electrotechnical committees (IEC National Committees). The object of IEC is to promote
international co-operation on all questions concerning standardization in the electrical and electronic fields. To
this end and in addition to other activities, IEC publishes International Standards, Technical Specifications,
Technical Reports, Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC
Publication(s)”). Their preparation is entrusted to technical committees; any IEC National Committee interested
in the subject dealt with may participate in this preparatory work. International, governmental and non-
governmental organizations liaising with the IEC also participate in this preparation. IEC collaborates closely
with the International Organization for Standardization (ISO) in accordance with conditions determined by
agreement between the two organizations.
2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international
consensus of opinion on the relevant subjects since each technical committee has representation from all
interested IEC National Committees.
3) IEC Publications have the form of recommendations for international use and are accepted by IEC National
Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC
Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any
misinterpretation by any end user.
4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications
transparently to the maximum extent possible in their national and regional publications. Any divergence
between any IEC Publication and the corresponding national or regional publication shall be clearly indicated in
the latter.
5) IEC itself does not provide any attestation of conformity. Independent certification bodies provide conformity
assessment services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any
services carried out by independent certification bodies.
6) All users should ensure that they have the latest edition of this publication.
7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and
members of its technical committees and IEC National Committees for any personal injury, property damage or
other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and
expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC
Publications.
8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is
indispensable for the correct application of this publication.
9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of
patent rights. IEC shall not be held responsible for identifying any or all such patent rights.
International Standard IEC 62148-2 has been prepared by subcommittee 86C: Fibre optic
systems and active devices, of IEC technical committee 86: Fibre optics.
This standard should be read in conjunction with IEC 62148-1.
This second edition cancels and replaces the first edition published in 2003. It constitutes a
technical revision.
With respect to the previous edition, this edition includes 10-pin SFF-LC, and SFF MU devices.
It also cancels and replaces the first edition of IEC 62148-7 and the first edition of
IEC 62148-9.
– 4 – 62148-2 Ó IEC:2010
The text of this standard is based on the following documents:
FDIS Report on voting
86C/975/FDIS 86C/981/RVD
Full information on the voting for the approval of this standard can be found in the report on
voting indicated in the above table.
This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.
A list of all parts of the IEC 62148 series can be found, under the general title Fibre optic
active components and devices – Package and interface standards, on the IEC website.
The committee has decided that the contents of this publication will remain unchanged until
the stability date indicated on the IEC web site under "http://webstore.iec.ch" in the data
related to the specific publication. At this date, the publication will be
 reconfirmed,
 withdrawn,
 replaced by a revised edition, or
 amended.
62148-2 Ó IEC:2010 – 5 –
INTRODUCTION
Fibre optic transceivers are used to convert electrical signals into optical signals and vice
versa. This standard covers the physical interface for a 10-pin small form factor (SFF)
transceiver. This transceiver is designed for use with the SFF MU/MT-RJ/LC duplex optical
connector and with through-hole printed circuit-board applications.

– 6 – 62148-2 Ó IEC:2010
FIBRE OPTIC ACTIVE COMPONENTS AND DEVICES –
PACKAGE AND INTERFACE STANDARDS –

Part 2: SFF 10-pin transceivers

1 Scope
This part of IEC 62148 covers the physical interface specifications for the SFF MT-RJ/LC/MU
duplex 10-pin fibre optic transceiver module family.
The intent of this standard is to adequately specify the physical requirements of an optical
transceiver that will enable mechanical interchangeability of transceivers complying with this
standard both at the printed circuit wiring board and for any panel-mounting requirement.
2 Normative references
The following referenced documents are indispensable for the application of this document.
For dated references, only the edition cited applies. For undated references, the latest edition
of the referenced document (including any amendments) applies.
IEC 61754-6, Fibre optic connector interfaces – Part 6: Type MU connector family
IEC 61754-18, Fibre optic connector interfaces – Part 18: Type MT-RJ connector family
IEC 61754-20, Fibre optic connector interfaces – Part 20:Type LC connector family
IEC 62148-1, Fibre optic active components and devices – Package and interface standards –
Part 1: General and guidance
3 Terms, definitions and abbreviations
For the purposes of this document, the following terms, definitions and abbreviations apply.
3.1 Terms and definitions
3.1.1
small form factor optical transceiver
a compact optical digital signal transceiver whose package has the same cross sectional
outline as the receptacle of an electrical connector compliant with the IEC 60603-7 series
3.2 Abbreviations
SFF small form factor
4 Classification
The transceiver described in this standard is classified as type 1 according to IEC 62148-1.

62148-2 Ó IEC:2010 – 7 –
5 Specification of the optical connector interface
This standard applies to the MT-RJ/LC/MU duplex optical connector interface. Detailed
dimensions of the optical receptacle are provided in Clause 7.
Assignment of the optical transmit and receive ports is aligned to the electrical pins. One-half
of the module is the transmit side and the other is the receive side. Assignments are shown
in Figure 1.
6 Electrical interface
6.1 General
The electrical interface in this standard defines only the basic functionality of each pin.
6.2 Numbering of electrical terminals
Pin numbering assignments are shown in Figure 1 (viewed from the top of the module with
pins underneath).
Tx
10  9  8  7  6   HL
MS   HL
Rx
MS  HL
1  2  3  4  5   HL
IEC  2853/10
Key
Rx: receiver section
Tx: transmitter section
Figure 1 – Electrical terminal numbering assignments
(viewed from above with pins underneath)
6.3 Electrical terminal assignment
Table 1 – Transceiver receiver pin-function definitions
10-pin
Symbol Functional description
part
Mounting studs
The mounting studs are provided for transceiver mechanical attachment to the circuit
a
MS MS
board. They may also provide an optional connection of the transceiver to the equipment
chassis ground
Housing leads
HL HL
The optional transceiver housing leads may be provided for additional signal grounding.
These additional grounds may improve signal integrity, EMC or EMI performance
1 Vee Receiver signal ground
r
2 Vcc Receiver power supply
r
3 SD Signal detect
4 RD- Received data out bar
5 RD+ Received data out
a
The holes in the circuit board shall be tied to the chassis ground.

– 8 – 62148-2 Ó IEC:2010
Table 2 – Transceiver transmitter pin-function definitions
10-pin
Symbol Functional description
part
Mounting studs
a The mounting studs are provided for transceiver mechanical attachment to the circuit board.
MS MS
They may also provide an optional connection of the transceiver to the equipment chassis
ground
Housing leads
HL HL
The optional transceiver housing leads may be provided for additional signal grounding.
These additional grounds may improve signal integrity, EMC or EMI performance
6 Vcc Transmitter power supply
t
7 Vee Transmitter signal ground
t
b
8 TDis Transmitter disable: optional feature
9 TD+ Transmitter data in
10 TD− Transmitter data in bar
a
The holes in the circuit board shall be tied to the chassis ground.
b
Optional use for laser-based products only.

7 Outline and footprint
7.1 Drawings of case outline
Drawings of the case outline as well as the dimensions are given in Figures 2, 3 and 4.

62148-2 Ó IEC:2010 – 9 –
4 x 4 x BB
4´
CC DD
6´ ÆK
66×φ×φKK
0.0.3636 Z  Z  X X BB
0,36
UUUU HHHH
PP
MM
φφÆ0,200.22 MZMZ
NN AA
EE
EEEE
WW
101010´×φ×φ ÆJ JJ
XX
VV
YY
UU
HH
0,0.0.36 3636 Z XZ X
TT
NNotote 1e 1
φφ00.11 MZMZ
Æ0,1
GG
SS
FFFF
FF
RR
ZZ
JJ
NNotote 6e 6
Note Note 55
NNotote e 55
KK
IEC  2854/10
Figure 2 – Case outline of the SFF MT-RJ 10-pin transceiver

– 10 – 62148-2 Ó IEC:2010
Table 3 – Key to Figure 2
Dimensions
mm
Reference Remarks
Minimum Maximum
A 10,16 Basic dimension
B 1,78 Basic dimension
C 7,59 Basic dimension
D 17,78 Basic dimension
E 13,59
F 9,80
G 49,56 Reference dimension
H 1,90 See Note 7
J 0,41 0,61 Diameter in case of rod
pins (See Note 3)
K 0,97 1,07 Diameter in case of rod
pins (See Note 4)
M 3,56 Basic dimension
N 13,34 Basic dimension
P 7,11 Basic dimension
R 2,92
S 37,56
T 12,00
U 0,30 See Note 8
V 4,57 Basic dimension
W 1,70 2,30
EE 9,60
FF 9,30
HH 1,90 See Note 7
UU 0,30 See Note 8
NOTE 1 Defines the space available for the MT-RJ optical receptacle.
NOTE 2 All 16 pins and posts are to be treated as a single pattern.
NOTE 3 Quadratic prism whose cross section is less than the quadrangle inscribed in the circle
which diameter is “J”.
NOTE 4 Quadratic prism whose cross section is less than the quadrangle inscribed in the circle
which diameter is “K”.
NOTE 5 Four housing leads are additional signal grounds to enhance the tolerance of
Electromagnetic immunity and Electromagnetic compatibility.
NOTE 6 Two mounting studs are recommended to be tied to the chassis ground.
NOTE 7 H+HH is less than 3,63.
NOTE 8 U+UU is less than 0,45.

62148-2 Ó IEC:2010 – 11 –
BB
44 x 4 x ´
CC DD
6´ ÆK
66×φ×φKK
0.0.3636 Z  Z  X X BB
0,36
UUUU HHHH
PP
MM
Æ0,2
φφ00.22 MZMZ
NN AA
EE
101010´×φ×φ ÆJ JJ
XX
VV
YY
UU
HH
0,36 0.0.3636 Z Z XX
TT
NNoote te 11
φφ00.11 MZMZ
Æ0,1
GG
SS
FF
RR
ZZ
JJ
NNotote e 66
Note Note 55
NNotote e 55
KK
IEC  2855/10
Figure 3 – Case outline of the SFF LC 10-pin transceiver

– 12 – 62148-2 Ó IEC:2010
Table 4 – Key to Figure 3
Dimensions
mm
Reference Remarks
Minimum Maximum
A 10,16 Basic dimension
B 1,78 Basic dimension
C 7,59 Basic dimension
D 17,78 Basic dimension
E 13,59
F 9,80
G 49,56 Reference dimension
H 1,90 See Note 7
J 0,41 0,61 Diameter in case of rod
pins (See Note 3)
K 0,97 1,07 Diameter in case of rod
pins (See Note 4)
M 3,56 Basic dimension
N 13,34 Basic dimension
P 7,11 Basic dimension
R 2,92
S 37,56
T 12,00
U 0,30 See Note 8
V 4,57 Basic dimension
HH 1,90 See Note 7
UU 0,30 See Note 8
NOTE 1 Defines the space available for the LC optical receptacle.
NOTE 2 All 16 pins and posts are to be treated as a single pattern.
NOTE 3 Quadratic prism whose cross section is less than the quadrangle inscribed in the circle
which diameter is “J”.
NOTE 4 Quadratic prism whose cross section is less than the quadrangle inscribed in the circle
which diameter is “K”.
NOTE 5 Four housing leads are additional signal grounds to enhance the tolerance of
Electromagnetic immunity and Electromagnetic compatibility.
NOTE 6 Two mounting studs are recommended to be tied to the chassis ground.
NOTE 7 H+HH is less than 3,63.
NOTE 8 U+UU is less than 0,45.

62148-2 Ó IEC:2010 – 13 –
BB
44 x 4 x ´
CC DD
6´ ÆK
66×φ×φKK
0.0.3636 Z  Z  X X BB
0,36
UUUU HHHH
PP
MM
Æ0,2
φφ00.22 MZMZ
NN AA
EE
101010´×φ×φ ÆJ JJ
XX
VV
YY
UU
HH
0,30.0.36366 Z Z XX
TT
NNoote te 11
φφ00.11 MZMZ
Æ0,1
GG
SS
FF
RR
ZZ
JJ
NNotote e 66
Note Note 55
NNotote e 55
KK
IEC  2856/10
Figure 4 – Case outline of the SFF MU duplex 10-pin transceiver

– 14 – 62148-2 Ó IEC:2010
Table 5 – Key to Figure 4
Dimensions
mm
Reference Remarks
Minimum Maximum
A 10,16 Basic dimension
B 1,78 Basic dimension
C 7,59 Basic dimension
D 17,78 Basic dimension
E 13,59
F 9,80
G 49,56 Reference dimension
H 1,90 See Note 7
J 0,41 0,61 Diameter in case of rod
pins (See Note 3)
K 0,97 1,07 Diameter in case of rod
pins (See Note 4)
M 3,56 Basic dimension
N 13,34 Basic dimension
P 7,11 Basic dimension
R 2,92
S 37,56
T 12,00
U 0,30 See Note 8
V 4,57 Basic dimension
HH 1,90 See Note 7
UU 0,30 See Note 8
NOTE 1 Defines the space available for the MU optical receptacle.
NOTE 2 All 16 pins and posts are to be treated as a single pattern.
NOTE 3 Quadratic prism whose cross section is less than the quadrangle inscribed in the circle
which diameter is “J”.
NOTE 4 Quadratic prism whose cross section is less than the quadrangle inscribed in the circle
which diameter is “K”.
NOTE 5 Four housing leads are additional signal grounds to enhance the tolerance of
Electromagnetic immunity and Electromagnetic compatibility.
NOTE 6 Two mounting studs are recommended to be t
...