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MJE340 ST Bipolar (BJT)

The MJE340 is an NPN bipolar transistor from STMicroelectronics in TO-225 (SOT-82) through-hole package, featuring high breakdown voltage and medium current capability. For selection, verify collector-emitter voltage (VCEO) of up to 300V, continuous collector current of 500mA, DC current gain (hFE) characteristics, collector-emitter saturation voltage for conduction losses, and operating junction temperature from -65°C to +150°C. Features include high voltage capability for demanding circuits, TO-225 package for through-hole mounting, and complementary PNP type MJE350. Ideal for high-voltage audio amplifier drivers and output stages, switching power supplies, industrial control circuits, DC-DC converters, and any high-voltage low-to-medium current switching or linear amplification application. In stock at HL Electronics – request a quote for fast delivery.

MJE340 - ST - main product image
Part No.:MJE340
Brand:ST
Date Code:
Stock:3,000
SPQ:0
MOQ:1+
Delivery Time:In Stock

Pricing (USD)

QuantityUnit Price
1+ $ 0.26
50+ $ 0.20
1000+ $ 0.18
20000+ $ 0.18
30000+ $ 0.18

Technical Specifications

  • Part No.MJE340
  • Model MJE340
  • Category Discrete Semiconductor Products > Transistors > Bipolar (BJT)
  • Manufacturer STMicroelectronics
  • Packaging Tube
  • Part Status Active
  • Transistor Type NPN
  • Current - Collector (Ic) (Max) 500 mA
  • Voltage - Collector Emitter Breakdown (Max) 300 V
  • Vce Saturation (Max) @ Ib, Ic 1V @ 30mA, 300mA
  • Current - Collector Cutoff (Max) 100 µA
  • DC Current Gain (hFE) (Min) @ Ic, Vce 30 @ 50mA, 10V
  • Power - Max 20.8 W
  • Frequency - Transition 20 MHz
  • Operating Temperature -65°C ~ 150°C (TJ)
  • Mounting Type Through Hole
  • Supplier Device Package SOT-32-3 (TO-126)
  • Base Product Number MJE340
  • RoHS ROHS3 Compliant
  • Standard Package 1000
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