MIL-M-38510-504 Microcircuits, Digital, Bipolar Programmable Logic, Monolithic SiliconThis specification covers the detail requirements for monolithic silicon, bipolar, programmable logic microcircuits which employ titanium tungsten TiW resistors as the fusible link or programming element. Two product assurance classes and a choice of case outlines and lead materials and finishes are provided for each type and are reflected in the complete part number. For this product, the requirements of MIL-M-38510 have been superseded by MIL-PRF-38535, see 6.4.

Pages 1 - 2 - 3 - 4 - 5 - 6 - 7 - 8 - 9 - 10 - 11 - 12 - 13 - 14 - 15 - 16 - 17 - 18 - 19 - 20 - 21 - 22 - 23 - 24 - 25 - 26 - 27 - 28 - 29 - 30 - 31 - 32 - 33 - 34 - 35 - 36 - 37 - 38 - 39 - 40 - 41 - 42 - 43 - 44 - 45 - 46 - 47 - 48 - 49 - 50 - 51 - 52 - 53 - 54 - 55 - 56 - 57 - 58 - 59

MIL-M-38510/504B

Symbol	INCHES		MILLIMETERS		NOTES
Symbol	MIN	MAX	MIN	MAX	NOTES
A	.006	.090	.15	2.29
b	.015	.019	3.81	.48	5
c	.003	.006	.08	.15	5
D	.37	.41	9.4	10.41	3
E	.37	.41	9.4	10.41

E2	.130		3.3
E3	.030		.76		9
e	.050 BSC		1.27 BSC		4, 6
k					8
L		.305		7.75
Q	.010	.040	.25	1.02	2

S2	.005		.13		8
α	30	90	30	90	8, 9

NOTES:

1. Index area; a notch or a pin one identification mark shall be located adjacent to pin one and shall be located within the shaded area shown. The manufacturer's identification shall not be used as a pin one identification mark. Alternatively, a tab (dimension k) may be used to identify pin one.

2. Dimension Q shall be measured at the point of exit of the lead from the body. Dimension Q shall be .0085 (.216 mm) minimum when lead finish A is applied.

3. This dimension allows for off center lid, meniscus and glass overrun.

4. The basic pin spacing is .050 (1.25 mm) between centerlines. Each pin centerline shall be located within

.005 (.13 mm) of its exact longitudinal position relative to pins 1 and 20.

5. All leads - Increase maximum limit by .003 (.08 mm) measured at the center of the flat, when lead finish A is applied.

6. Eighteen spaces.

7. Optional, see note 1. If a pin one identification mark is used in addition to this tab, the minimum limit of dimension k does not apply.

8. Applies to leads number 1, 10, 11 and 20.

9. Lead configuration is optional within dimension E except dimensions b and c apply (see MIL-STD-1835)

FIGURE 1. Case outline Y (20 lead, 3/8 " x 3/8" flat pack).