MIL-PRF-19500/413F
* TABLE I. Group A inspection - Continued.
Unit
Symbol
Inspection 1/
MIL-STD-750
Limits
Min
Max
Method
Conditions
Subgroup 6 - Continued
Load condition B, TC = +25°C,
Safe operating area
3053
duty cycle < 10%, RS = 0.1Ω,
(clamped inductive)
(destructive)
(see figure 4).
RBB1 = 2Ω, VBB1 < 14 V dc,
Test 1 (2N3771 only)
RBB2 = 100Ω, VBB2 = 1.5 V dc,
IC = 30 A dc, VCC = 50 +0,-5
V dc, RL = 1.67Ω, L = 5 mH,
0.01Ω (Signal Transformer
Co. CH-30 or equivalent),
CR = 1N1186A, clamp
voltage = 50 +0, -5 V dc.
RBB1 = 2Ω, VBB1 < 10 V dc,
Test 2 (2N3772 only)
RBB2 = 100Ω, VBB2 = 1.5 V dc
IC = 20 A dc, VCC = 90 +0,-5
V dc, RL = 4.5Ω, L = 5 mH,
0.01Ω (Signal Transformer
Co. CH-30 or equivalent),
CR = 1N1186A, clamp
voltage = 90 +0, -5 V dc.
Electrical measurements
See table I, subgroup 2
1/
For sampling plan, see MIL-PRF-19500.
2/
This test required for the following end-point measurements only:
Group B, subgroups 2 and 3 (JAN, JANTX, and JANTXV).
Group C, subgroup 2 and 6.
Group E, subgroup 1.
TABLE II. Groups B, C, and E delta measurements. 1/ 2/ 3/
Step
Inspection
MIL-STD-750
Symbol
Limit
Unit
Method
Conditions
Min
Max
ΔhFE2 4/
VCE = 4 V dc,
1.
Forward-current
±25% change
3076
pulsed (see 4.5.1)
transfer ratio
from previously
measured value
IC = 15 A dc
2N3771
IC = 10 A dc
2N3772
1/
The delta measurements for table E-IX of MIL-PRF-19500 are subgroups 1 and 2.
2/
The delta measurements for table E-VIB, (JAN, JANTX and JANTXV) of MIL-PRF-19500 are
subgroups 3 and 6.
3/
The delta measurements for table E-VII of MIL-PRF-19500 are subgroups 2 and 6.
4/
Devices which exceed the group A limits for this test shall not be acceptable.
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