Standard Specification for Integrated Circuit Lead Frame Material

ABSTRACT
This specification covers the special requirements for a metal strip used in the fabrication of integrated-circuit lead frames by stamping or photochemical milling. The metal strip shall be manufactured from copper and copper alloys, ferrous alloys containing nickel, cobalt, or chromium, nickel and nickel alloys, or other metallic materials and shall conform to the chemical, physical, and mechanical property requirements specified, including the limitation on the severity and number of inclusions, the surface finish, and the coil size. Tests for straightness, flatness, coil set, and grain size shall be performed and shall conform to the requirements specified.
SCOPE
1.1 This specification covers the special requirements for metal strip to be used to fabricate integrated-circuit lead frames by stamping or photochemical milling.  
1.2 The metals that are applicable to these parts include copper and copper alloys, ferrous alloys usually containing nickel or cobalt or chromium, nickel and nickel alloys, and other metallic materials.  
1.3 The general chemical, physical, and mechanical property requirements of these materials are covered by other ASTM specifications (specifically Specifications B103/B103M, B122/B122M, B152/B152M, B162, B465, F15, F30, F31, F49 and F68), and these should be consulted for properties and tempers that are different for the different metals. For metals for which no ASTM specification is available, other specifications should be adopted by agreement of the parties concerned.  
1.4 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.

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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation:F375 −89(Reapproved 2015)
Standard Specification for
Integrated Circuit Lead Frame Material
ThisstandardisissuedunderthefixeddesignationF375;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginal
adoption or, in the case of revision, the year of last revision.Anumber in parentheses indicates the year of last reapproval.Asuperscript
epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope E112 Test Methods for Determining Average Grain Size
F15 Specification for Iron-Nickel-Cobalt Sealing Alloy
1.1 This specification covers the special requirements for
F30 Specification for Iron-Nickel Sealing Alloys
metalstriptobeusedtofabricateintegrated-circuitleadframes
F31 Specification for Nickel-Chromium-Iron SealingAlloys
by stamping or photochemical milling.
F49 Specification for Molybdenum Strip for Electron Tubes
1.2 The metals that are applicable to these parts include
(Withdrawn 1978)
copper and copper alloys, ferrous alloys usually containing
F68 Specification for Oxygen-Free Copper in Wrought
nickel or cobalt or chromium, nickel and nickel alloys, and
Forms for Electron Devices
other metallic materials.
1.3 The general chemical, physical, and mechanical prop- 3. Ordering Information
erty requirements of these materials are covered by other
3.1 Orders for material under this specification shall include
ASTM specifications (specifically Specifications B103/
the following information:
B103M, B122/B122M, B152/B152M, B162, B465, F15, F30,
3.1.1 Quantity of each size,
F31, F49 and F68), and these should be consulted for proper-
3.1.2 Material and specification number appropriate to the
ties and tempers that are different for the different metals. For
material (see 2.1),
metals for which no ASTM specification is available, other
3.1.3 Temper or mechanical properties (see 4.1),
specifications should be adopted by agreement of the parties
3.1.4 Dimensions:thickness,width,lengthifapplicable(see
concerned.
6.2 – 6.4),
1.4 The values stated in inch-pound units are to be regarded
3.1.5 How furnished: coils and coil size or lengths (see
as standard. The values given in parentheses are mathematical
10.1),
conversions to SI units that are provided for information only
3.1.6 ASTM designation, referencing this specification
and are not considered standard.
number, and the fabricating process to be used,
2. Referenced Documents
3.1.7 Certificationortestreportrequirements(see11.1),and
3.1.8 Packing and marking requirements (see 12.1 and
2.1 ASTM Standards:
B103/B103M Specification for Phosphor Bronze Plate, 12.2).
Sheet, Strip, and Rolled Bar
B122/B122M Specification for Copper-Nickel-Tin Alloy, 4. Materials and Manufacture
Copper-Nickel-Zinc Alloy (Nickel Silver), and Copper-
4.1 The materials covered by this specification shall con-
Nickel Alloy Plate, Sheet, Strip, and Rolled Bar
form to the chemical, physical, and mechanical property
B152/B152M Specification for Copper Sheet, Strip, Plate,
requirements prescribed in the material specification covering
and Rolled Bar
the metal or alloy and the temper (see 2.1).
B162 Specification for Nickel Plate, Sheet, and Strip
4.2 The material shall conform to the requirements for lead
B465 SpecificationforCopper-IronAlloyPlate,Sheet,Strip,
frames as prescribed in this specification and shall be charac-
and Rolled Bar
teristically suitable for fabrication into lead frames by the
fabricating process to be specified. Any special requirements
This specification is under the jurisdiction of ASTM Committee F01 on
Electronics and is the direct responsibility of Subcommittee F01.03 on Metallic
relating to the material properties or the fabricating process, to
Materials, Wire Bonding, and Flip Chip.
be specified by the user, shall be agreed upon between the
Current edition approved July 1, 2015. Published October 2015. Originally
supplier and purchaser.
approved in 1973 as F375 – 73 T. Last previous edition approved in 2010 as
F375 – 89 (2010). DOI: 10.1520/F0375-89R15.
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
Standards volume information, refer to the standard’s Document Summary page on The last approved version of this historical standard is referenced in
the ASTM website. www.astm.org.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
F375−89(2015)
TABLE 2 Width Tolerances
5. Chemical Composition
Width tolerances, ±, in. (mm)
5.1 The material shall conform to the requirements as to
for thickness in the range
Width, in. (mm)
chemical composition specified for flat products in the ASTM
0.004 in. (0.10 mm) to
0.030 in. (0.76 mm), incl
specification for the metal or alloy specified, unless otherwise
2.000 (50.80) and under 0.003 (0.07)
agreed upon between supplier and purchaser.
Over 2.000 (50.80) to 6.000 (152.40), incl 0.005 (0.12)
Over 6.000 (152.40) to 12.000 (304.80), incl 0.010 (0.25)
6. Dimensions and Tolerances
Over 12.000 (304.80) to 24.000 (609.60), incl 0.016 (0.40)
6.1 General—For the purposes of determining conformance
with the dimensional requirements prescribed in this
TABLE 3 Straightness (Camber) Tolerances
specification,anymeasuredvalueoutsidethespecifiedlimiting
Tolerance Per Unit Length of Any
values for any dimension shall be cause for rejection.
Specified Width, in. (mm)
96-in. (2.44-m) Length, in. (mm)
6.2 Thickness—The thickness tolerances shall be those
1 1
Up to 1 ⁄2 (38.1), incl ⁄2 (12.7)
1 1
Over 1 ⁄2 (38.1) ⁄4 (6.3)
shown in Table 1.
6.3 Width—The width of material shall conform to toler-
ances shown in Table 2.
6.4 Length—The length tolerances shall be those shown in
6.7.2 Test Me
...


This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation: F375 − 89 (Reapproved 2010) F375 − 89 (Reapproved 2015)
Standard Specification for
Integrated Circuit Lead Frame Material
This standard is issued under the fixed designation F375; the number immediately following the designation indicates the year of original
adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A superscript
epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope
1.1 This specification covers the special requirements for metal strip to be used to fabricate integrated-circuit lead frames by
stamping or photochemical milling.
1.2 The metals that are applicable to these parts include copper and copper alloys, ferrous alloys usually containing nickel or
cobalt or chromium, nickel and nickel alloys, and other metallic materials.
1.3 The general chemical, physical, and mechanical property requirements of these materials are covered by other ASTM
specifications (specifically Specifications B103/B103M, B122/B122M, B152/B152M, B162, B465, F15, F30, F31, F49 and F68),
and these should be consulted for properties and tempers that are different for the different metals. For metals for which no ASTM
specification is available, other specifications should be adopted by agreement of the parties concerned.
1.4 TTheThe values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical
conversions to SI units that are provided for information only and are not considered standard.
2. Referenced Documents
2.1 ASTM Standards:
B103/B103M Specification for Phosphor Bronze Plate, Sheet, Strip, and Rolled Bar
B122/B122M Specification for Copper-Nickel-Tin Alloy, Copper-Nickel-Zinc Alloy (Nickel Silver), and Copper-Nickel Alloy
Plate, Sheet, Strip, and Rolled Bar
B152/B152M Specification for Copper Sheet, Strip, Plate, and Rolled Bar
B162 Specification for Nickel Plate, Sheet, and Strip
B465 Specification for Copper-Iron Alloy Plate, Sheet, Strip, and Rolled Bar
E112 Test Methods for Determining Average Grain Size
F15 Specification for Iron-Nickel-Cobalt Sealing Alloy
F30 Specification for Iron-Nickel Sealing Alloys
F31 Specification for Nickel-Chromium-Iron Sealing Alloys
F49 Specification for Molybdenum Strip for Electron Tubes (Withdrawn 1978)
F68 Specification for Oxygen-Free Copper in Wrought Forms for Electron Devices
3. Ordering Information
3.1 Orders for material under this specification shall include the following information:
3.1.1 Quantity of each size,
3.1.2 Material and specification number appropriate to the material (see 2.1),
3.1.3 Temper or mechanical properties (see 4.1),
3.1.4 Dimensions: thickness, width, length if applicable (see 6.2 – 6.4),
3.1.5 How furnished: coils and coil size or lengths (see 10.1),
3.1.6 ASTM designation, referencing this specification number, and the fabricating process to be used,
3.1.7 Certification or test report requirements (see 11.1), and
This specification is under the jurisdiction of ASTM Committee F01 on Electronics and is the direct responsibility of Subcommittee F01.03 on Metallic
MaterialsMaterials, Wire Bonding, and Flip Chip.
Current edition approved Oct. 1, 2010July 1, 2015. Published November 2010October 2015. Originally approved in 1973 as F375 – 73 T. Last previous edition approved
in 20052010 as F375 – 89 (2005).(2010). DOI: 10.1520/F0375-89R10.10.1520/F0375-89R15.
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
The last approved version of this historical standard is referenced in www.astm.org.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
F375 − 89 (2015)
3.1.8 Packing and marking requirements (see 12.1 and 12.2).
4. Materials and Manufacture
4.1 The materials covered by this specification shall conform to the chemical, physical, and mechanical property requirements
prescribed in the material specification covering the metal or alloy and the temper (see 2.1).
4.2 The material shall conform to the requirements for lead frames as prescribed in this specification and shall be
characteristically suitable for fabrication into lead frames by the fabricating process to be specified. Any special requirements
relating to the material properties or the fabricating process, to be specified by the user, shall be agreed upon between the supplier
and purchaser.
5. Chemical Composition
5.1 The material shall conform to the requirements as to chemical composition specified for flat products in the ASTM
specification for the metal or alloy specified, unless otherwise agreed upon between supplier and purchaser.
6. Dimensions and Tolerances
6.1 General—For the purposes of determining conformance with the dimensional requirements prescribed in this specification,
any measured value outside the specified limiting values for any dimension shall be cause for rejection.
6.2 Thickness—The thickness tolerances shall be those shown in Table 1.
6.3 Width—The width of material shall conform to tolerances shown in Table 2.
6.4 Length—The length tolerances shall be those shown in the appropriate table for flat products in the ASTM specification
covering the metal or alloy.
6.5 Straightness—The maximum edgewise curvature (camber) in any 96-in. (2.44-m) length shall be that shown in Table 3.
6.5.1 Test Method—Cut a length greater than 96 in. (2.44 m), representative of the material, and lay it on a flat surface. Place
an 8-ft long straightedge a
...

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