Unijunction Transistors

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Intrinsic Standoff Ratio Min









Intrinsic Standoff Ratio Max








Interbase Resistance Min
(KOHMS)




Interbase Resistance Max
(KOHMS)





Min Valley Point Current
(mA)





Package



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Part
Number
Descriptive Datasheet
Power Rating
PD
mW
Intrinsic Standoff Ratio Min
η
 
Intrinsic Standoff Ratio Max
η
 
Interbase Resistance Min
ΓBB
KOHMS
Interbase Resistance Max
ΓBB
KOHMS
Max Emitter Reverse Current
IEB20
μA
Emitter Reverse Current Voltage
VB2E
VOLTS
Max Peak Point Emitter Current
IP
μA
Min Valley Point Current
IV
mA
Min Base One Peak Pulse Voltage
VOB1
VOLTS
Package Available
Lead
Finish
Notes
2N2422
Unijuction Transistor 300 0.62 0.75 6.2 9.1 2 60 12 8 n/a TO-18
Sn/Pb Pb-free
Notes
2N2422A
Unijuction Transistor 300 0.62 0.75 6.2 9.1 2 60 12 8 3 TO-18
Sn/Pb Pb-free
Notes
2N2422B
Unijuction Transistor 300 0.62 0.75 6.2 9.1 0.2 30 6 8 3 TO-18
Sn/Pb Pb-free
Notes
2N2646
Unijuction Transistor 300 0.56 0.75 4.7 9.1 12 30 5 4 3 TO-18
Sn/Pb Pb-free
Notes
2N2647
Unijuction Transistor 300 0.68 0.82 4.7 9.1 0.2 30 2 8 6 TO-18
Sn/Pb Pb-free
Notes
2N3980
Unijuction Transistor 360 0.68 0.82 4 8 0.01 30 2 1 6 TO-18
Sn/Pb Pb-free
Notes
2N4851
Unijuction Transistor 300 0.56 0.75 4.7 9.1 0.1 30 2 2 3 TO-18
Sn/Pb Pb-free
Notes
2N4852
Unijuction Transistor 300 0.7 0.85 4.7 9.1 0.1 30 2 4 5 TO-18
Sn/Pb Pb-free
Notes
2N4853
Unijuction Transistor 300 0.7 0.85 4.7 9.1 0.05 30 0.4 6 6 TO-18
Sn/Pb Pb-free
Notes
2N4870
Unijuction Transistor 300 0.56 0.75 4 9.1 1 30 5 2 3 TO-92
Sn/Pb Pb-free
Notes
2N4871
Unijuction Transistor 300 0.7 0.85 4 9.1 1 30 5 4 5 TO-92
Sn/Pb Pb-free
Notes
2N4948
Unijuction Transistor 360 0.55 0.82 4 12 0.01 30 2 2 3 TO-18
Sn/Pb Pb-free
Notes
2N4949
Unijuction Transistor 360 0.74 0.86 4 12 0.01 30 1 2 6 TO-18
Sn/Pb Pb-free
Notes
2N5431
Unijuction Transistor 360 0.72 0.8 6 8.5 0.01 30 0.4 2 1 TO-18
Sn/Pb Pb-free
Notes
MU2646
Unijuction Transistor 300 0.56 0.75 4.7 9.1 0.01 30 5 1 3 TO-92
Sn/Pb Pb-free
Notes
MU2647
Unijuction Transistor 300 0.56 0.75 4.7 9.1 0.01 30 5 1 3 TO-92
Sn/Pb Pb-free
Notes
MU4891
Unijuction Transistor 300 0.55 0.82 4 9.1 0.01 30 5 2 3 TO-92
Sn/Pb Pb-free
Notes
MU4892
Unijuction Transistor 300 0.51 0.69 4 9.1 0.01 30 2 2 3 TO-92
Sn/Pb Pb-free
Notes
MU4893
Unijuction Transistor 300 0.55 0.82 4 12 0.01 30 2 2 3 TO-92
Sn/Pb Pb-free
Notes
MU4894
Unijuction Transistor 300 0.74 0.86 4 12 0.01 30 1 2 6 TO-92
Sn/Pb Pb-free
Notes