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Page Title:
Table II. Group B inspection cont'd |
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|  MIL-S-19500/37E
* TABLE II. Group B inspection - Continued.
Limits
Inspection
MIL-STD-750
Symbol
Min
Max
Unit
Method
Details
Subgroup 4
Terminal strength (lead fatigue)
2036
Test condition E
-7
End points:
1071
Test conditions G or H for the
atm
1X10
Hermetic seal
fine leaks; test conditions A, C,
cc/sec
D, or F for gross leaks.
Subgroup 5
Alt atmosphere (corrosion)
1041
Subgroup 6
High temperature life
1032
Time = 340 hours
(nonoperating)
(see 4.3.4)
Ttg = +175C
2N333, 2N335, 2N336, T2, LT2
2N333A, 2N335A, 2N336A, T2, LT2
Ttg = +200C
End points:
A dc
Collector to base cutoff
1.0
3036
Bias condition D;
ICBO
current
VCB = 30 V dc
40
V dc
Breakdown voltage,
3001
Bias condition D;
BVCBO
IC = 50 A dc
collector to base
25
ĆhFE
Percent
Forward-current transfer
3076
VCE = 5 V dc;
change
ratio
IC = 10 mA dc
from
initial
recorded
value
Small-signal short-circuit forward-
3206
hfe
VCB = 5 V dc;
current transfer ratio
IE = -1 mA dc
2n333, 2N333A, T2, LT2
15
2N335 2N335A, T2, LT2
30
2N336, 2N336A, T2, LT2
60
Subgroup 7
TA = +125C; VCB = 20 V dc;
Steady-state operation life
1027
(2N333, 2N335, 2N336, T2, LT2)
P = 50 mW; time = 340 hours
(see 4.3.4)
End points:
(Same as subgroup 6)
TA = +25C; VCB = 30 V dc;
Steady-state operation life
1027
(2N333A, 2N335A, 2N336A, T2,
P = 500 mW; time = 340 hours
LT2)
(see 4.3.4)
End points:
(Same as subgroup 6)
11
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