MIL-PRF-19500/253L
B-version
Die size:
.018 x .018 inch (0.4572 x 0.4572 mm).
.008 ±.0016 inch (0.2032 ±0.04064 mm).
Die thickness:
Base pad:
.0025 inch (0.0635 mm) diameter.
Emitter pad:
.003 inch (0.0762 mm) diameter.
Gold, 6,500 ±1,950 Å.
Back metal:
Aluminum, 19,500 ±2,500 Å.
Top metal:
Back side:
Collector.
SiO2, 7,500 ±1,500 Å.
Glassivation:
FIGURE 4. Physical dimensions, JANHCB and JANKCB die.
6
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