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NPN transistor, 300 V (MJE340, TO-126)

USB & power interfaces · MJE340

MJE340 · TO-126 · 300 V · 0.5 A · about 1.25 W in free air (20 W on a heatsink) · β 30–240

NPN transistor, 300 V (MJE340, TO-126) on the simulator's bench

Try it on the benchThe lab drops it on an empty bench and opens its datasheet card.

Pins

E
B
C

Lessons and builds that use it

65 W USB-C PD charger from scratch: mains flyback (UC3844, 800 V MOSFET, PQ2625 transformer), TL431 + PC817 feedback, PD controller (build)
Real device: phone charger, 220 V AC wall to 5 V USB (build)
Real device: laptop charger, 220 V AC wall to 20 V with PFC (build)

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