2N4870

2N4870 Unijunction Transistor (UJT) TO−92 Type Package Description: The 2N4870 is a PN unijunction transistor in a TO−92 type package designed for use in pulse and timing circuits, sensing circuits and thyristor trigger circuits. Absolute Maximum Ratings: (TA = +25C unless other specified) RMS Power Dissipation, PD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 300mW Derate Above 25C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.0mW/C RMS Emitter Current, IE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50mA Peak−Pulse Emitter Current (Note 1), IE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.5A Emitter Reverse Voltage, VB2E . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30V Interbase Voltage (Note 2), VB2B1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35V Operating Junction Temperature Range, TJ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −65 to +125C Storage Temperature Range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −65 to +150C Note 1. Duty cycle  1%, PRR = 10 PPS Note 2. Based upon power dissipation at TA = +25C Electrical Characterist...