Part Number Descriptive Datasheet Power Rating Intrinsic Standoff Ratio Min Intrinsic Standoff Ratio Max Interbase Resistance Min Interbase Resistance Max Max Emitter Reverse Current Emitter Reverse Current Voltage Max Peak Point Emitter Current Min Valley Point Current Min Base One Peak Pulse Voltage Package Available Lead Finish Notes
PD η η ΓBB ΓBB IEB20 VB2E IP IV VOB1
mW KΩ KΩ μA VOLTS μA mA VOLTS
2N3980 saved Unijuction Transistor 360 0.68 0.82 4 8 0.01 30 2 1 6 TO-18 Sn/Pb Pb-free
2N4948 saved Unijuction Transistor 360 0.55 0.82 4 12 0.01 30 2 2 3 TO-18 Sn/Pb Pb-free
2N4949 saved Unijuction Transistor 360 0.74 0.86 4 12 0.01 30 1 2 6 TO-18 Sn/Pb Pb-free
2N5431 saved Unijuction Transistor 360 0.72 0.8 6 8.5 0.01 30 0.4 2 1 TO-18 Sn/Pb Pb-free