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MIL-PRF-19500-514 Semiconductor Device, Transistor, Npn, Silicon, Power, Types 2N6274 And 2N6277, Jan, Jantx, And JantxvThis specification covers the performance requirements for NPN silicon, power transistors. Three levels of product assurance are provided for each encapsulated device type as specified in MIL-PRF-19500.

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MIL-PRF-19500/514D
NOTES:
1. Either a clamping circuit or clamping diode may be used.
2. The coil used shall provide a minimum inductance of 370 µH at 50 A with a maximum dc resistance of .15 Ω.
For reference only: Miller type 7827; or equivalent.
3. RS ≤ .1 ohm, 12 W, 1 percent tolerance maximum, (noninductive).
Procedure:
1. With switch S1 closed, set the specified test conditions.
2. Open S1. Device fails if clamp voltage not reached and maintained until the current returns to zero.
3. Perform specified endpoint tests.
FIGURE 5. Clamped inductive sweep test circuit.
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