MIL-PRF-19500/323N
* TABLE I. Group A inspection - Continued.
Inspection 1/
MIL-STD-750
Symbol
Limit
Unit
Method
Conditions
Min
Max
Subgroup 3
TA = +150°C
High-temperature
operation:
µA dc
Collector - emitter
3041
Bias condition A;
20
ICEX2
cutoff current
VCE = 40 V dc; VBE = 3.0 V dc
TA = -55°C
Low-temperature
operation:
Forward-current
3076
VCE = 1.0 V dc; IC = 1.0 mA dc
hFE5
transfer ratio
2N3250A,
20
2N3250AUB
2N3251A,
40
2N3251AUB
Subgroup 4
Small-signal short-circuit
3206
hfe
VCE = 10 V dc; IC = 1 mA dc;
forward-current transfer
f = 1 kHz
ratio
2N3250A,
50
200
2N3250AUB,
50
200
2N3251A,
100
400
2N3251AUB
100
400
Magnitude of common
3306
VCE = 20 V dc; IC = 10 mA dc;
| hfe |
emitter small-signal
f = 100 MHz
short-circuit forward-
current transfer ratio
2N3250A,
2.5
9.0
2N3250AUB
2N3251A,
3.0
9.0
2N3251AUB
Open circuit output
3236
6
pF
VCB = 10 V dc; IE = 0;
Cobo
capacitance
100 kHz ≤ f ≤ 1 MHz
Input capacitance
3240
8
pF
VEB = 1.0 V dc; IC = 0;
Cibo
(output open-circuited)
100 kHz ≤ f ≤ 1 MHz
Collector-base time
5
250
ps
VCE = 20 V dc; IC = 10 mA dc;
rb'Cc
constant
f = 31.8 MHz; (see 4.5.2 and
figure 10)
VCE = 5.0 V dc; IC = 100 µA dc;
Noise figure
3246
NF
6
dB
Rg = 1 kΩ; f = 100 Hz
See footnotes at end of table.
13
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