MIL-PRF-19500/198E
TABLE I. Group A inspection.
MIL-STD-750
Limits
Inspection 1/
Symbol
Unit
Method
Conditions
Min
Max
Subgroup 1
2071
Visual and mechanical
examination
Subgroup 2
μA dc
10
IFBX
DC method, bias condition B;
4206
Forward blocking
R2 = 1,000 Ω, .25 watt
current
2N1870A
VFBX = 30
2N1871A
VFBX = 60
2N1872A
VFBX = 100
2N1874A
VFBX = 200
Reverse blocking
4211
DC method, bias condition B;
R2 = 1,000 Ω, .25 watt
μA dc
current
IRBX
10
2N1870A
VFBX = 30
2N1871A
VFBX = 60
2N1872A
VFBX = 100
2N1874A
VFBX = 200
μA dc
Gate trigger current
4221
V2 = VFBX = 5 V dc
IGT
200
Re = 1,000 Ω;
RL = 100 Ω;
V2 = VFBX = 5 V dc
Gate trigger voltage
4221
VGT
0.4
0.8
V dc
Re = 1,000 Ω
RL = 100 Ω;
Vf
2.5
V dc
Forward "on" voltage
4226
IFM = 2 a(pk) (pulse);
pulse width = 8.5 ms; maximum;
duty cycle = 2 percent maximum
4231
Bias condition B; repetition rate =
Exponential rate of
VFBX
60 pps; 50 Ω ≤ RL ≤ 400 Ω;
voltage rise
C = .001 μF min; test duration =
15 sec; R3 = 1,000 Ω
dv/dt = 100 V/μs; VAA = 30 V dc
2N1870A
25
dv/dt = 60 V/μs; VAA = 60 V dc
2N1871A
55
dv/dt = 40 V/μs; VAA = 100 V dc
2N1872A
95
dv/dt = 30 V/μs; VAA = 200 V dc
2N1874A
190
See footnote at end of table.
6
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