2N2221A, L, UA, UB &
2N2222A, L, UA, UB
Radiation Hardened NPN Silicon Switching Transistors
Rev. V1
Features
Qualified to MIL-PRF-19500/255
Levels
JANSM-3K Rads (Si) JAN
JANSD-10K Rads (Si) JANTX
JANSP-30K Rads (Si) JANTXV
JANSL-50K Rads (Si) JAN
JANSR-100K Rads (Si)
TO-18 (TO-206AA), Surface mount UA & UB
Packages
Applications
Switching and Linear Applications
DC and VHF Amplifier Applications
Electrical Specifications @ TA = 25°C
Parameter
Test Conditions
Symbol Units Minimum Maximum
Off Characteristics:
Collector - Emitter Breakdown
IC = 10 mAdc
V(BR)CEO Vdc
50
—
VCB = 75 Vdc
VCB = 60 Vdc
ICBO1
ICBO2
µAdc
nAdc
10
10
Collector - Base Cutoff Current
Emitter - Base Cutoff Current
—
VEB = 6.0 Vdc
VEB = 4.0 Vdc
IEBO1
IEBO2
µAdc
nAdc
10
10
—
—
Collector - Emitter Cutoff Current
VCE = 50 Vdc
ICES
nAdc
50
On Characteristics1:
2N2221A, L, UA, UB
IC = 0.1 mAdc, VCE = 10 Vdc
IC = 1.0 mAdc, VCE = 10 Vdc
IC = 10.0 mAdc, VCE = 10 Vdc
IC = 150.0 mAdc, VCE = 10 Vdc
IC = 500.0 mAdc, VCE = 10 Vdc
30
35
40
40
20
—
150
—
120
—
Forward Current Transfer Ratio
hFE
2N2222A, L, UA, UB
IC = 0.1 mAdc, VCE = 10 Vdc
IC = 1.0 mAdc, VCE = 10 Vdc
IC = 10.0 mAdc, VCE = 10 Vdc
IC = 150.0 mAdc, VCE = 10 Vdc
IC = 500.0 mAdc, VCE = 10 Vdc
50
75
100
100
30
—
325
11
120
—
IC = 150 mAdc, IB = 15 mAdc
IC = 500 mAdc, IB = 50 mAdc
0.3
1.0
Collector - Base Cutoff Current
Base - Emitter Saturation Voltage
VCE(sat)
VBE(sat)
Vdc
Vdc
—
IC = 150 mAdc, IB = 15 mAdc
IC = 500 mAdc, IB = 50 mAdc
0.6
—
1.2
2.0
1. Pulse Test: Pulse Width = 300 ms, Duty Cycle < 2%.
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1
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