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SEMI G75.9-069 8 © SEMI 1998 1 SEMI G75.9-0698 TEST ME THOD FOR MEASUREMENT OF TENSILE STRENGTH, ELONGATION, AND TENSILE MODULUS OF LE A D FRAME T A PE 1 Purpo se 1.1 Tensile strength , elongation, a n d tensile modulus …

SEMI G75.8-0698 © SEMI 1998 2

Figure 1

Coefficient of Thermal Expansion (CTE)

6.7.2.2 Extend the lower tangent line above its highest

temperature and the higher tangent line below its lowest

temperature until they intersect. The temperature at the

intersection point is the Glass Transition Temperature.

6 Related Documents

NOTE: As listed or revised, all documents cited shall be the

latest publications of adopted standards.

6.1 SEMI Standard

SEMI G13 — Standard Test Method for Expansion

Characteristics of Molding Compounds

6.2 ASTM Specification

ASTM D 669 — Standard Test Method for Coefficient

of Linear Thermal Expansion of Plastics

6.3 JIS Specification

JIS K 6911 — Testing Methods for Thermosetting of

Plastics

1 American Society of Testing and Materials, 100 Barr Harbor Drive,

West Conshohoken, PA 19428-2959 (all cited standards may be

found in Volume 10.05 of the Annual Book of ASTM Standards)

2 Japanese Standards Association, 1-24, Akasaka 4 Chome, Minato-

ku, Tokyo, Japan

NOTICE: These standards do not purport to address

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responsibility of the user of these standards to establish

appropriate safety and health practices and determine

the applicability of regulatory limitations prior to use.

SEMI makes no warranties or representations as to the

suitability of the standards set forth herein for any

particular application. The determination of the

suitability of the standard is solely the responsibility of

the user. Users are cautioned to refer to manufacturer’s

instructions, product labels, product data sheets, and

other relevant literature respecting any materials

mentioned herein. These standards are subject to

change without notice.

The user’s attention is called to the possibility that

compliance with this standard may require use of

copyrighted material or of an invention covered by

patent rights. By publication of this standard, SEMI

takes no position respecting the validity of any patent

rights or copyrights asserted in connection with any

item mentioned in this standard. Users of this standard

are expressly advised that determination of any such

patent rights or copyrights, and the risk of infringement

of such rights, are entirely their own responsibility.

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SEMI G75.9-0698 © SEMI 19981

SEMI G75.9-0698

TEST METHOD FOR MEASUREMENT OF TENSILE STRENGTH,

ELONGATION, AND TENSILE MODULUS OF LEADFRAME TAPE

1 Purpose

1.1 Tensile strength, elongation, and tensile modulus

of leadframe tape are measured by a tensile pull tester,

which is used to stretch the tape samples to the point of

breakage with a calibrated load cell.

2 Equipment

2.1 Tensile pull tester with 100 kg MAX load cell,

sample clamping chucks, and a chart recorder.

2.2 Micrometer with 0.001 mm accuracy.

2.3 Calipers with 0.02 mm accurac y.

3 Test Condition

3.1 Tensile test measurements shall be carried out at

the following ambient conditions:

Temperature — 23 ± 5°C

Humidity — 50 ± 5% RH

4 Sampling

4.1 The sampling is one sample per one lot. The

vendor has to report the definition of lot, if the

customer requires it.

4.2 The sample width shall be 15.0 ± 0.2 mm, and the

length must be 100 mm minimum.

5 Equipment Setup and Cal ibration

5.1 Refer to the tensile tester manufacturer’s

equipment manual for setup and calibration.

5.2 The pulling rate shall be set to 5 ± 0.5 mm/minute.

5.3 The load shall be recorded in kilograms.

6 Procedure

6.1 Measure the thickness (T) of the sample with the

micrometer and the width (W) with calipers (mm).

6.2 Clamp the tape in the chucks so that the distance

) between the chucks is 50 ± 5 mm.

NOTE: Some equipment may measure this length

automatically or plot Stress versus Strain, (L/L

), directly,

where L is the elongation.

6.3 Start the pulling and record until the sample

breaks.

6.4 Repeat the testing procedures for all the samples.

7 Results

7.1 Read the Break Force A (kg) and Elongation L

(mm) at sample breakage from the chart.

7.2 Draw a tangent line from the origin of the Load-

Elongation curve to the maximum slope of the curve.

(See Figure 1.)

NOTE: B (kg) is the incremental force change required to

produce an elongation, L

, in the elastic region and may be

determined from the tangent line.