MIL-PRF-19500/441K
TABLE I. Group A inspection - Continued.
Inspection 1/
MIL-STD-750
Symbol
Limits
Unit
Method
Conditions
Min
Max
Subgroup 4 - Continued.
Pulse response
Turn-on time
400
ns
IC = 1 A dc; IB1 = 0.1 A dc
ton
(see figure 8)
µs
Turn-off time
1
IC = 1 A dc; IB1 = IB2 = 0.1 A dc
toff
(see figure 8)
Subgroup 5
TC = +25°C; power application
3051
SOA (continuous dc)
time = 1 s; 1 cycle (see figure 9)
Test 1
VCE = 6.25 V dc; IC = 4 A dc
Test 2
VCE = 20 V dc; IC = 1.25 A dc
Test 3
IC = 150 mA dc
2N3740, 2N3740U4
VCE = 50 V dc
2N3741, 2N3741U4
VCE = 65 V dc
TA = +25°C; VCC = 15 V dc; duty
SOA (clamped switching)
cycle ≤ 5 percent, tp = 1.5 ms
(vary to obtain IC), IC = 4 A dc
(see figures 10 and 11)
2N3740
Clamp voltage = 60 V dc
2N3741
Clamp voltage = 80 V dc
End-point electrical
See table I, subgroup 2 herein
measurements
SOA (switching)
3053
Load condition C (unclamped
inductive) (see figure 12); TA = +25°C;
duty cycle ≤ 5 percent, RS = 0.1 Ω;
tr = tf ≤ 500 ns; RBB1 = 50 Ω;
VBB1 = 10 V dc; RBB2 = ∞;
VBB2 = 0; VCC ≥ 20 V dc
tp = 375 µs (vary to obtain IC);
Test 1
IC = 1 A dc; L = 5 mH (min) at 1 A
with maximum dc resistance of
0.5 Ω. For reference only:
2 ESSEX Stancor C-2688
(in parallel), or equivalent
See footnotes at end of table.
13
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