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7 SEMI G70-0996 © SEMI 1996, 2004 Figure 19 Leadframe Fi xture — Type 4 Figure 20 Leadframe Fi xture — Type 5 6 Measurement 6.1 Leadfram e fixtures and measurement equipment for each measurem ent ite m are shown in Table…
SEMI G70-0996 © SEMI 1996, 2004 6
Figure 16
Leadframe Fixture — Type 1
Figure 17
Leadframe Fixture — Type 2
Figure 18
Leadframe Fixture — Type 3
7 SEMI G70-0996 © SEMI 1996, 2004
Figure 19
Leadframe Fixture — Type 4
Figure 20
Leadframe Fixture — Type 5
6 Measurement
6.1 Leadframe fixtures and measurement equipment for each measurement item are shown in Tables 3 and 4.
Table 3 Leadframe Fixtures and Measurement Equipment (Independent of Package Type)
Items Leadframe Fixture Equipment
Burr height 1. 2. 3. 4. 5. A. B. D.
Coil set 5 A. B. C.
Coined depth 1. 2. 3. 4. 5. A. B.
Die pad dimple depth 1. 2. 3. 4. 5. A. B.
Lead lock groove depth 1. 2. 3. 4. 5. A. B.
Half-etch depth 1. 2. 3. 4. 5. A. B.
Leadframe twist 1. 2. 3. 4. 5 A. B.
SEMI G70-0996 © SEMI 1996, 2004 8
Table 4 Leadframe Fixtures and Measurement Equipment (Dependent on Package Type)
Items Group I Group II
Leadframe Fixture Equipment Leadframe Fixture Equipment
Crossbow 1. A. B. 1. 3. A.
Die pad flatness 1. 3. A. B. D 3. 4. A. D.
Die pad location 1. 3 A. B 4 A.
Die pad tilt 1. 3. A. B 3. 4 A.
Downset depth 1. 3. A. B 4 A.
Lead planarity 1. 3. A. B 4 A.
Lead coplanarity 1. 3. A. B 4 A.
Lead tilt 1. 3. A. B 3. 4 A.
7 Related Documents
7.1 SEMI Standard
SEMI G10 — Standard Method for Mechanical Measurement for Plastic Package Leadframes
NOTICE: SEMI makes no warranties or representations as to the suitability of the standard 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 or equipment mentioned herein. These standards are subject to change without
notice.
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asserted in connection with any item mentioned in this standard. Users of this standard are expressly advised that
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own responsibility.
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