ASTM F375-89(1999)

Standard Specification for Integrated Circuit Lead Frame Material

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, 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 the standard. The values given in parentheses are for information only.

General Information

• Status: Historical
• Publication Date: 31-Dec-1998
• ICS: 31.240 - Mechanical structures for electronic equipment
• Technical Committee: F01 - Electronics
• Drafting Committee: F01.03 - Metallic Materials, Wire Bonding, and Flip Chip

Relations

• Replaced By: ASTM F375-89(2005) - Standard Specification for Integrated Circuit Lead Frame Material
• Effective Date: 01-Jan-2005

Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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: F 375 – 89 (Reapproved 1999)
Standard Specification for
Integrated Circuit Lead Frame Material
This standard is issued under the fixed designation F 375; 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 (e) indicates an editorial change since the last revision or reapproval.
1. Scope F 15 Specification for Iron-Nickel-Cobalt Sealing Alloy
F 30 Specification for Iron-Nickel Sealing Alloys
1.1 This specification covers the special requirements for
F 31 Specification for 42 Percent Nickel-6 Percent
metalstriptobeusedtofabricateintegrated-circuitleadframes
Chromium-Iron Sealing Alloy
by stamping or photochemical milling.
F 49 Specification for Molybdenum Strip for Electron
1.2 The metals that are applicable to these parts include
Tubes
copper and copper alloys, ferrous alloys usually containing
F 68 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 B 103/B
the following information:
103M, B 122/B 122M, B 152, B 162, B 465, F 15, F 30, F 31,
3.1.1 Quantity of each size,
F 49 and F 68), and these should be consulted for properties
3.1.2 Material and specification number appropriate to the
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 the standard. The values given in parentheses are for
10.1),
information only.
3.1.6 ASTM designation, referencing this specification
2. Referenced Documents number, and the fabricating process to be used,
3.1.7 Certificationortestreportrequirements(see11.1),and
2.1 ASTM Standards:
3.1.8 Packing and marking requirements (see 12.1 and
B 103/B 103M Specification for Phosphor Bronze Plate,
12.2).
Sheet, Strip, and Rolled Bar
B 122/B 122M Specification for Copper-Nickel-Tin Alloy,
4. Materials and Manufacture
Copper-Nickel-Zinc Alloy (Nickel Silver), and Copper-
2 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
B 152 Specification for Copper Sheet, Strip, Plate, and
2 requirements prescribed in the material specification covering
Rolled Bar
3 the metal or alloy and the temper (see 2.1).
B 162 Specification for Nickel Plate, Sheet, and Strip
4.2 The material shall conform to the requirements for lead
B 465 Specification for Copper-Iron Alloy Plate, Sheet,
2 frames as prescribed in this specification and shall be charac-
Strip, and Rolled Bar
teristically suitable for fabrication into lead frames by the
E 112 Test Methods for Determining the Average Grain
4 fabricating process to be specified. Any special requirements
Size
relating to the material properties or the fabricating process, to
be specified by the user, shall be agreed upon between the
This specification is under the jurisdiction of ASTM Committee F-1 on supplier and purchaser.
Electronics and is the direct responsibility of Subcommittee F01.03 on Metallic
Materials.
Current edition approved March 1, 1989. Published May 1989. Originally
published as F 375 – 73 T. Last previous edition F 375 – 77 (1989).
Annual Book of ASTM Standards, Vol 02.01.
3 5
Annual Book of ASTM Standards, Vol 02.04. Annual Book of ASTM Standards, Vol 10.04.
4 6
Annual Book of ASTM Standards, Vol 03.01. Discontinued—See 1977 Annual Book of ASTM Standards, Part 43.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
F 375
TABLE 2 Width Tolerances
5. Chemical Composition
Width tolerances, 6, 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
agreed upon between supplier and purchaser.
2.000 (50.80) and under 0.003 (0.07)
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—Forthepurposesofdeterminingconformance
with the dimensional requirements prescribed in this specifi-
TABLE 3 Straightness (Camber) Tolerances
cation, any measured value outside the specified limiting
values for any dimension shall be cause for rejection. Tolerance Per Unit Length of Any
Specified Width, in. (mm)
96-in. (2.44-m) Length, in. (mm)
6.2 Thickness—The thickness tolerances shall be those
Upto11 2 (38.1), incl 1 2 (12.7)
/ /
shown in Table 1.
Over 1 1 2 (38.1) 1 4 (6.3)
/ /
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
bet
...