Radiation Hardened NPN Silicon Switching Transistors

Rev. V1

2N2221A, L, UA, UB &

2N2222A, L, UA, UB

2

2

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2

Parameter

Test Conditions

Symbol Units Minimum Maximum

Dynamic Characteristics:

Small-Signal Short-Circuit

Forward Current Transfer Ratio

2N2221A, L, UA, UB

2N2222A, L, UA, UB

hfe

30

50

—

Magnitude of Small-Signal Short-Circuit,

Forward Current Transfer Ratio

| hfe |

2.5

—

Output Capacitance

pF

—

8

25

Switching Characteristics:

Turn-On Time

(See figure 17 of MIL-PRF-19500/255)

ns

—

35

Turn-Off Time

(See Figure 18 of MIL-PRF-19500/255)

ns

—

300

Parameter

Absolute Maximum

50 Vdc

75 Vdc

6.0 Vdc

800 mAdc

0.5 W

325 ºC/W

Operating Temperature

-65°C to +200°C

Storage Temperature

-65°C to +200°C