MIL-PRF-19500-312 Semiconductor Device, Transistor, Npn, Silicon, Switching Type 2N708, Jan, Jantx, And JanhcThis specification covers the detail requirements for NPN silicon switching transistors. Two levels of product assurance are provided for the device type as specified in MIL-PRF-19500. One level of product assurance is provided for die.

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MIL-PRF-19500/312E

NOTES:

20 x 20 mils, � 2 mils.

1. Chip size:

10 mils, � 1.5 mils nominal.

2. Chip thickness:

3. Top metal:

Aluminum 10,000 � min, 12,000 � nominal.

4. Back metal:

a. Al/Ti/Ni/Ag 12 k�/ 3 k�/ 7 k�/ 7 k� min., 15 k�/ 5 k�/ 10 k�/ 10 k�.

b. Gold 2,500 � minimum, 3,000 � nominal.

c. Eutectic mount - no gold.

5. Backside:

Collector.

6. Chip size:

B = 4 X 4.5 mils, E = 4.5 X 5 mils.

FIGURE 2. JANHC (A-version) die dimensions.