EN IEC 63155:2020

Guidelines for the measurement method of power durability for surface acoustic wave (SAW) and bulk acoustic wave (BAW) devices in radio frequency (RF) applications

IEC 63155:2020 defines the measurement method for the determination of the durability of radio frequency (RF) surface acoustic wave (SAW) and bulk acoustic wave (BAW) devices, such as filters and duplexers, with respect to high power RF signals, which are used in telecommunications, measuring equipment, radar systems and consumer products. RF BAW devices include two types: those based on the film bulk acoustic resonator (FBAR) technology and those based on the solidly mounted resonator (SMR) technology. This document includes basic properties of failure of RF SAW/BAW devices, and guidelines to set up the measurement system and to establish the procedure to estimate the time to failure (TF). Since TF is mainly governed by the RF power applied in the devices, discussions are focused on the power durability. It is not the aim of this document to explain the theory, or to attempt to cover all the eventualities which can arise in practical circumstances. This document draws attention to some of the more fundamental questions which will need to be considered by the user before he/she places an order for an RF SAW/BAW device for a new application. Such a procedure will be the user's means of preventing unsatisfactory performance related to premature device failure resulting from high-power exposure of RF SAW/BAW devices.

Leitlinien für das Verfahren zur Messung der Leistungsfestigkeit von Oberflächenwellen (OFW)- und Volumenwellen (BAW)-Bauelementen in Hochfrequenz (HF)-Anwendungen

Lignes directrices relatives à la méthode de mesure de la durabilité de puissance des appareils à ondes acoustiques de surface (OAS) et des appareils à ondes acoustiques de volume (OAV) dans les applications de radiofréquence (RF)

L'IEC 63155:2020 définit la méthode de mesure pour la détermination de la durabilité des appareils de radiofréquence (RF) à ondes acoustiques de surface (OAS) et à ondes acoustiques de volume (OAV), tels que les filtres et les duplexeurs, pour ce qui est des signaux RF de puissance élevée qui sont utilisés dans les télécommunications, les équipements de mesure, les systèmes radars et les produits de consommation. Les appareils RF à OAV sont de deux types: le premier se fonde sur la technologie du résonateur acoustique de volume de couche (FBAR, film bulk acoustic resonator), le second se fonde sur la technologie du résonateur monté solidement (SMR, solidly mounted resonator). Le présent document inclut les propriétés de défaillance de base des appareils RF à OAS et à OAV et des lignes directrices afin de configurer le système de mesure et d'établir la procédure pour estimer la durée de fonctionnement avant défaillance (TF). La TF étant principalement régie par la puissance de radiofréquence appliquée dans les appareils, les études se concentrent sur la durabilité de puissance. Le présent document n'est pas destiné à expliquer la partie théorique ni à traiter toutes les éventualités qui peuvent se produire dans la pratique. Il attire l'attention sur certaines des questions fondamentales que l'utilisateur a besoin de prendre en considération avant de commander un appareil de radiofréquence à OAS ou à OAV pour une nouvelle application. Cette procédure protège l'utilisateur contre des performances non satisfaisantes de l'appareil relatives à une défaillance prématurée causée par l'exposition de celui-ci à une puissance élevée.

Smernice za metodo merjenja trajanja energije površinskega zvočnega vala (SAW) in prostorskega zvočnega vala (BAW) v napravah pri radiofrekvenčnih (RF) aplikacijah (IEC 63155:2020)

General Information

• Status: Published
• Publication Date: 18-Jun-2020
• ICS: 31.140 - Piezoelectric devices
• Technical Committee: CLC/SR 49 - Piezoelectric and dielectric devices for frequency control and selection
• Drafting Committee: IEC/TC 49 - IEC_TC_49
• Current Stage: 6060 - Document made available - Publishing
• Start Date: 19-Jun-2020
• Completion Date: 19-Jun-2020
• Ref Project: SIST EN IEC 63155:2020 - Guidelines for the measurement method of power durability for surface acoustic wave (SAW) and bulk acoustic wave (BAW) devices in radio frequency (RF) applications (IEC 63155:2020)

Overview

EN IEC 63155:2020 provides guidance for measuring the power durability of radio‑frequency (RF) surface acoustic wave (SAW) and bulk acoustic wave (BAW) devices (filters, duplexers) when exposed to high RF power. The document defines how to set up measurement systems, describes basic failure properties, and outlines procedures to estimate time to failure (TF) using accelerated testing and established models (e.g., Arrhenius relationship with inverse power‑law behaviour). RF BAW device types covered include FBAR and SMR technologies. The standard is aimed at helping users avoid premature device failure in telecommunications, radar, measurement equipment and consumer products.

Key topics and requirements

• Scope and device types: Measurement guidance for RF SAW and BAW devices (including FBAR and SMR).
• Failure mechanisms: Discussion of common degradation modes such as acoustomigration, electrode damage in IDTs, self‑heating and thermal runaway, plus voids/hillocks formation.
• Accelerated life testing: Recommendations for shortening TF measurement via elevated RF power and/or temperature, and for extrapolating results to normal operating conditions.
• Modelling and TF estimation: Use of the Arrhenius model combined with inverse power laws; emphasis on experimental determination of model parameters rather than theoretical assumption.
• Measurement setup & procedure: Guidelines for basic and advanced test configurations (including setups that monitor filter response during RF power exposure), temperature control, and specification of measurement parameters.
• Measurement specifications: Advice on test planning, monitoring, and documenting TF data to support reliable extrapolation.

Practical applications

EN IEC 63155:2020 is directly applicable to:

• Design validation and reliability assessment of RF filters and duplexers in mobile handsets, base stations, radar and IoT devices.
• Supplier qualification and specification development when ordering SAW/BAW components for high‑power RF environments.
• Test laboratories establishing standardized procedures for RF power‑induced lifetime testing and accelerated ageing.

Practical takeaways:

• Plan TF tests with controlled ambient and chip temperature monitoring.
• Use accelerated power/temperature profiles and fit experimental data to the Arrhenius + inverse power model to estimate service life.
• Monitor RF response during tests to detect early degradation.

Who should use this standard

• RF component manufacturers (SAW/BAW filter and duplexer producers)
• Reliability engineers and test labs performing life‑time and power‑durability testing
• System integrators and procurement engineers specifying component durability for RF applications

Related standards

The document contains a bibliography referencing related IEC standards (for example, IEC 62575‑1 and other harmonized IEC publications). Users should consult those referenced standards and manufacturer datasheets when developing detailed test plans.

Standards Content (Sample)

SLOVENSKI STANDARD
01-oktober-2020
Smernice za metodo merjenja trajanja energije površinskega zvočnega vala (SAW)
in prostorskega zvočnega vala (BAW) v napravah pri radiofrekvenčnih (RF)
aplikacijah (IEC 63155:2020)
Guidelines for the measurement method of power durability for surface acoustic wave
(SAW) and bulk acoustic wave (BAW) devices in radio frequency (RF) applications (IEC
63155:2020)
Leitlinien für das Verfahren zur Messung der Leistungsfestigkeit von Oberflächenwellen
(OFW)- und Volumenwellen (BAW)-Bauelementen in Hochfrequenz (HF)-Anwendungen
(IEC 63155:2020)
Lignes directrices relatives à la méthode de mesure de la durabilité de puissance des
appareils à ondes acoustiques de surface (OAS) et des appareils à ondes acoustiques
de volume (OAV) dans les applications de radiofréquence (RF) (IEC 63155:2020)
Ta slovenski standard je istoveten z: EN IEC 63155:2020
ICS:
31.140 Piezoelektrične naprave Piezoelectric devices
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD EN IEC 63155

NORME EUROPÉENNE
EUROPÄISCHE NORM
June 2020
ICS 31.140
English Version
Guidelines for the measurement method of power durability for
surface acoustic wave (SAW) and bulk acoustic wave (BAW)
devices in radio frequency (RF) applications
(IEC 63155:2020)
Lignes directrices relatives à la méthode de mesure de la Leitlinien für das Verfahren zur Messung der
durabilité de puissance des appareils à ondes acoustiques Leistungsfestigkeit von Oberflächenwellen (OFW)- und
de surface (OAS) et des appareils à ondes acoustiques de Volumenwellen (BAW)-Bauelementen in Hochfrequenz
volume (OAV) dans les applications de radiofréquence (RF) (HF)-Anwendungen
(IEC 63155:2020) (IEC 63155:2020)
This European Standard was approved by CENELEC on 2020-05-29. CENELEC members are bound to comply with the CEN/CENELEC
Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration.
Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC
Management Centre or to any CENELEC member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by translation
under the responsibility of a CENELEC member into its own language and notified to the CEN-CENELEC Management Centre has the
same status as the official versions.
CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic,
Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the
Netherlands, Norway, Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Turkey and the United Kingdom.

European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2020 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN IEC 63155:2020 E
European foreword
The text of document 49/1339/FDIS, future edition 1 of IEC 63155, prepared by IEC/TC 49
"Piezoelectric, dielectric and electrostatic devices and associated materials for frequency control,
selection and detection" was submitted to the IEC-CENELEC parallel vote and approved by
CENELEC as EN IEC 63155:2020.
The following dates are fixed:
• latest date by which the document has to be implemented at national (dop) 2021-03-01
level by publication of an identical national standard or by endorsement
• latest date by which the national standards conflicting with the (dow) 2023-05-29
document have to be withdrawn
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CENELEC shall not be held responsible for identifying any or all such patent rights.

Endorsement notice
The text of the International Standard IEC 63155:2020 was approved by CENELEC as a European
Standard without any modification.
In the official version, for Bibliography, the following notes have to be added for the standards
indicated:
IEC 60862-1:2015 NOTE Harmonized as EN 60862-1:2015 (not modified)
IEC 62047-7:2011 NOTE Harmonized as EN 62047-7:2011 (not modified)
IEC 62575-1:2015 NOTE Harmonized as EN 62575-1:2016 (not modified)
IEC 62575-2:2012 NOTE Harmonized as EN 62575-2:2012 (not modified)
IEC 62604-1:2015 NOTE Harmonized as EN 62604-1:2015 (not modified)
IEC 62761:2014 NOTE Harmonized as EN 62761:2014 (not modified)

IEC 63155 ®
Edition 1.0 2020-04
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Guidelines for the measurement method of power durability for surface acoustic

wave (SAW) and bulk acoustic wave (BAW) devices in radio frequency (RF)

applications
Lignes directrices relatives à la méthode de mesure de la durabilité de

puissance des appareils à ondes acoustiques de surface (OAS) et des appareils

à ondes acoustiques de volume (OAV) dans les applications de radiofréquence

(RF)
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 31.140 ISBN 978-2-8322-8253-3

– 2 – IEC 63155:2020 © IEC 2020
CONTENTS
FOREWORD . 3
INTRODUCTION . 5
1 Scope . 6
2 Normative references . 6
3 Terms and definitions . 6
3.1 General terms . 6
3.2 Durability related terms . 11
4 Basic properties of life time of RF SAW/BAW devices . 12
4.1 Life time and accelerated testing. 12
4.2 Failure mechanisms . 14
4.2.1 General . 14
4.2.2 Acoustomigration . 15
4.2.3 Self-heating and thermal run-away . 16
4.2.4 Other mechanisms . 16
4.3 Modelling . 16
5 Life time measurement . 18
5.1 Measurement setup . 18
5.2 Measurement procedure . 19
5.3 Life time estimation . 20
5.4 Measurement specifications . 20
Bibliography . 21

Figure 1 – FBAR configuration . 8
Figure 2 – SMR configuration . 9
Figure 3 – Frequency response of an RF SAW/BAW filter . 9
Figure 4 – Arrhenius plot when multiple mechanisms are contributing . 13
Figure 5 – Structure of ladder filter . 14
Figure 6 – Typical transmission characteristic of ladder filter . 14
Figure 7 – Creation of voids and hillocks . 15
Figure 8 – Translation of the filter pass band with temperature change . 17
Figure 9 – Basic setup for TF measurement at RF power application . 18
Figure 10 – Basic setup for TF measurement of SAW/BAW duplexer . 18
Figure 11 – Setup for TF measurement including filter response monitoring . 19
Figure 12 – Another setup for TF measurement including filter response monitoring . 19

IEC 63155:2020 © IEC 2020 – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
GUIDELINES FOR THE MEASUREMENT METHOD OF
POWER DURABILITY FOR SURFACE ACOUSTIC WAVE (SAW)
AND BULK ACOUSTIC WAVE (BAW) DEVICES IN
RADIO FREQUENCY (RF) APPLICATIONS

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
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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 63155 has been prepared by IEC technical committee 49:
Piezoelectric, dielectric and electrostatic devices and associated materials for frequency
control, selection and detection.
The text of this International Standard is based on the following documents:
FDIS Report on voting
49/1339/FDIS 49/1342/RVD
Full information on the voting for the approval of this International Standard can be found in
the report on voting indicated in the above table.
This document has been drafted in accordance with the ISO/IEC Directives, Part 2.

– 4 – IEC 63155:2020 © IEC 2020
The committee has decided that the contents of this document will remain unchanged until the
stability date indicated on the IEC website under "http://webstore.iec.ch" in the data related to
the specific document. At this date, the document will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
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 63155:2020 © IEC 2020 – 5 –
INTRODUCTION
Radio frequency (RF) surface acoustic wave (SAW) and bulk acoustic wave (BAW) devices
are now widely used in various communication systems owing to their features such as small
size, light weight, little or no need for tuning, high stability and high reliability.
One of the most important applications of the devices is the antenna duplexer in mobile
communication devices which separates incoming receiving (Rx) signals from base-stations
and outgoing transmitting (Tx) signals in the frequency domain. It is known that acoustic
vibration can accelerate destruction of electrode metals in the inter-digital transducers (IDTs)
employed, which results in device failure. Thus, the device life time (time to failure, TF) is
dependent on not only the chip temperature but also on input power level and frequency of
the applied radio frequency signal. It should be noted that chip temperature can be somewhat
different from the environmental temperature because the input power level of Tx signals in
the above-mentioned applications is about 1 W at maximum, and heat generation due to
power consumption is not negligible.
The requisite TF of the SAW/BAW duplexers is usually specified by input power level,
exposure frequency range and environmental temperature. Nevertheless, TF measurement
under given specifications is not realistic because the requisite TF is too long (could be up to
many years). Accelerated life time testing is applied to shorten the TF. TF is measured in
more severe situations, namely at higher power and/or higher ambient temperature. TF under
given specifications is estimated by extrapolation based on the Arrhenius model including the
inverse power law. Although the model explains the variation of the TF with respect to input
power level and temperature well, the parameters appearing in the model need to be
determined experimentally, and its procedures have not been well established. Therefore,
measurement methods will be specifically established for TF estimation of RF SAW/BAW
devices.
This document has been compiled in response to a generally expressed desire on the part of
both users and manufacturers for general information on testing condition guidance of RF
SAW/BAW filters, so that the filters may be used to their best advantage. To this end, general
and fundamental characteristics have been explained in this document.

– 6 – IEC 63155:2020 © IEC 2020
GUIDELINES FOR THE MEASUREMENT METHOD OF
POWER DURABILITY FOR SURFACE ACOUSTIC WAVE (SAW)
AND BULK ACOUSTIC WAVE (BAW) DEVICES IN
RADIO FREQUENCY (RF) APPLICATIONS

1 Scope
This document defines the measurement method for the determination of the durability of
radio frequency (RF) surface acoustic wave (SAW) and bulk acoustic wave (BAW) devices,
such as filters and duplexers, with respect to high power RF signals, which are used in
telecommunications, measuring equipment, radar systems and consumer products. RF BAW
devices include two types: those based on the film bulk acoustic resonator (FBAR) technology
and those based on the solidly mounted resonator (SMR) technology.
This document includes basic properties of failure of RF SAW/BAW devices, and guidelines to
set up the measurement system and to establish the procedure to estimate the time to failure
(TF). Since TF is mainly governed by the RF power applied in the devices, discussions are
focused on the power durability.
It is not the aim of this document to explain the theory, or to attempt to cover all the
eventualities which can arise in practical circumstances. This document draws attention to
some of the more fundamental questions which will need to be considered by the user before
he/she places an order for an RF SAW/BAW device for a new application. Such a procedure
will be the user's means of preventing unsatisfactory performance related to premature device
failure resulting from high-power exposure of RF SAW/BAW devices.
2 Normative references
There are no normative references in this document.
3 Terms and definitions
3.1 General terms
3.1.1
BAW
bulk acoustic wave
acoustic wave, propagating between the top and bottom surface of a piezoelectric structure
and then traversing the entire thickness of the piezoelectric bulk
Note 1 to entry: The wave is excited by metal electrodes attached to both sides of the piezoelectric layer.
[SOURCE: IEC 62575-1:2015, 3.1.1]
3.1.2
BAW filter
bulk acoustic wave filter
filter characterised by a bulk acoustic wave which is usually generated by a pair of electrodes
and propagates along a thin film thickness direction
[SOURCE: IEC 62575-1:2015, 3.1.2]

IEC 63155:2020 © IEC 2020 – 7 –
3.1.3
cut-off frequency
frequency of the pass band at which the relative attenuation reaches a specified value
[SOURCE: IEC 60862-1:2015, 3.1.2.4, modified – The reference to Figure 1 has been
deleted.]
3.1.4
duplexer
device used in the frequency division duplex system, which enables the system to receive and
transmit signal through a common antenna simultaneously
[SOURCE: IEC 62761:2014, 3.1.5]
3.1.5
film bulk acoustic resonator
FBAR
thin film BAW resonator consisting of a piezoelectric layer sandwiched between two electrode
layers with stress-free top and bottom surfaces supported mechanically at the edge on a
substrate with cavity structure as shown in Figure 1 or membrane structure as an example
Note 1 to entry: This note applies to the French language only.
[SOURCE: IEC 62575-1:2015, 3.1.3, modified – Figure 1 c) has been added.]

– 8 – IEC 63155:2020 © IEC 2020

a) Back-side etched
b) Front-side etched
c) Sacrificial-layer etched
Figure 1 – FBAR configuration
3.1.6
solidly mounted resonator
SMR
BAW resonator, supporting the electrode/piezoelectric layer/electrode structure by a
sequence of additional thin films of alternately low and high acoustic impedance Z with
a
quarter wavelength layer, and these layers act as acoustic reflectors and decouple the
resonator acoustically from the substrate as shown in Figure 2 as an example
Note 1 to entry: This note applies to the French language only.
[SOURCE: IEC 62575-1:2015, 3.1.4]

IEC 63155:2020 © IEC 2020 – 9 –

Figure 2 – SMR configuration
3.1.7
response characteristic
SEE: Figure 3
Figure 3 – Frequency response of an RF SAW/BAW filter
3.1.8
input impedance
impedance presented by the filter/duplexer to the signal source when the output is terminated
by a specified load impedance
[SOURCE: IEC 62604-1:2015, 3.1.2.22, modified – "duplexer" has been replaced by
"filter/duplexer".]
3.1.9
input level
power, voltage or current value applied to the input port of a filter/duplexer
[SOURCE: IEC 62604-1:2015, 3.1.2.19, modified – "duplexer" has been replaced by
"filter/duplexer".]
– 10 – IEC 63155:2020 © IEC 2020
3.1.10
insertion attenuation
logarithmic ratio of the power delivered directly to the load impedance before insertion of the
filter/duplexer to the power delivered to the load impedance after insertion of the
filter/duplexer
[SOURCE: IEC 62604-1:2015, 3.1.2.2, modified – "duplexer" has been replaced by
"filter/duplexer".]
3.1.11
operating temperature range
range of temperatures, over which the SAW/BAW filter/duplexer will function while maintaining
its specified characteristics within specified tolerances
[SOURCE: IEC 62575-1:2015, 3.1.16, modified – "BAW filter" has been replaced by
"SAW/BAW filter/duplexer".]
3.1.12
output impedance
impedance presented by the filter/duplexer to the load when the input is terminated by a
specified source impedance
[SOURCE: IEC 62604-1:2015, 3.1.2.23, modified – "duplexer" has been replaced by
"filter/duplexer".]
3.1.13
output level
power, voltage or current value delivered to the load circuit
[SOURCE: IEC 62604-1:2015, 3.1.2.20]
3.1.14
pass band
band of frequencies in which the relative attenuation is equal to or less than a specified value
[SOURCE: IEC 62604-1:2015, 3.1.2.5]
3.1.15
pass bandwidth
separation of frequencies between which the relative attenuation is equal to or less than a
specified value
[SOURCE: IEC 62604-1:2015, 3.1.2.6]
3.1.16
reflectivity
dimensionless measure of the degree of mismatch between two impedances Z and Z :
a b
ZZ−
a b
,
ZZ+
a b
where Z and Z represent, respectively, the input and source impedance or the output and
a b
load impedance
Note 1 to entry: The absolute value of reflectivity is called the reflection coefficient.
[SOURCE: IEC 62604-1:2015, 3.1.2.17]

IEC 63155:2020 © IEC 2020 – 11 –
3.1.17
Rx filter
filter used in a receiver part to eliminate unnecessary/unwanted signals
Note 1 to entry: The Rx filter is a basic part of a duplexer.
[SOURCE: IEC 62604-1:2015, 3.1.3.4, modified – "RX" has been replaced by "Rx" in the term,
"/unwanted" has been added to the definition and Note 2 to entry has been omitted.]
3.1.18
SAW filter
filter characterised by one or more surface acoustic wave transmission line or resonant
elements, where the surface acoustic wave is usually generated by an interdigital transducer
and propagates along a material surface
[SOURCE: IEC 62604-1:2015, 3.1.1.2, modified – The term "surface acoustic wave filter" has
been omitted.]
3.1.19
stop band
band of frequencies in which the relative attenuation is equal to or greater than a specified
value
3.1.20
SAW
surface acoustic wave
acoustic wave, propagating along a surface of an elastic material, whose amplitude decays
exponentially with the depth
[SOURCE: IEC 60862-1:2015, 3.1.1.1]
3.1.21
Tx filter
filter used in a transmitter part to eliminate unnecessary/unwanted signals
Note 1 to entry: This is a basic part of a duplexer.
[SOURCE: IEC 62604-1:2015, 3.1.3.3, modified – "TX" has been replaced by "Tx" in the term,
"/unwanted" has been added to the definition and Note
...