
Overview
The MJE340 is a bipolar made by DDF in a TO-126 package with 3 pins. TO-126 Bipolar (BJT) ROHS.
PCBKit's library has its KiCad symbol (Transistors:NPN E1 C2 B3, from CERN's library) and its footprint (ICs And Semiconductors THD:SOT-32_H, from CERN's library), ready for a KiCad board. 80 are in stock at JLCPCB (part C50229546).
Symbol
Footprint
Parameters
9- Collector - Emitter Voltage VCEO
- 300V
- Current - Collector Cutoff
- 100uA
- Current - Collector(Ic)
- 500mA
- DC Current Gain
- 240
- Emitter-Base Voltage(Vebo)
- 5V
- Number
- 1 PNP
- Pd - Power Dissipation
- 1.25W
- Vce Saturation(VCE(sat))
- 1V
- type
- NPN
Order codes
1- MJE340LCSC C50229546
Pinout
3| Pin | Name | Type |
|---|---|---|
| 1 | E | Passive |
| 2 | C | Passive |
| 3 | B | Passive |
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<iframe src="https://pcbkit.io/embed/parts/ddf/MJE340" title="MJE340 in PCBKit" width="100%" height="480" style="border:0;border-radius:12px" allow="fullscreen" loading="lazy"></iframe><img src="https://pcbkit.io/embed/parts/ddf/MJE340.jpg" alt="MJE340" width="1200" height="900">[](https://pcbkit.io/parts/ddf/MJE340)Questions
Is there a KiCad symbol and footprint for the MJE340?
Yes. The symbol is Transistors:NPN E1 C2 B3 and the footprint ICs And Semiconductors THD:SOT-32_H, both drawn on this page. PCBKit places them on a board for you when you design with it.
What package is the MJE340?
TO-126, with 3 pins. Its footprint is drawn on this page.
Where is the MJE340 datasheet?
DDF publishes it: the Datasheet link on this page opens it.
Where can I order the MJE340?
JLCPCB lists it as part C50229546, with 80 in stock; the sellers' links on this page open their listings.
What can replace the MJE340?
Parts like it in the library: the MJE340 by onsemi, the MJE350 by onsemi, the MJE340 by STMicroelectronics and the MJE350 by DDF. Check their datasheets: a part that fits the footprint may still differ in its ratings.
Parts like it
7MJE340
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TO-225-3-65℃~+150℃ 1 PNP 100uA 20W 30 300V 500mA 5V PNP TO-225-3 Bipolar (BJT) ROHSonsemiBipolar (BJT)MJE340
SOT-32-31 NPN 100uA 20.8W 30 300V 3V 500mA 500mV NPN SOT-32-3 Bipolar (BJT) ROHSSTMicroelectronicsBipolar (BJT)MJE350
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SOT-32-31 PNP 100uA 20.8W 30 300V 3V 500mA 500mV PNP SOT-32-3 Bipolar (BJT) ROHSSTMicroelectronicsBipolar (BJT)MJE340
TO-126TO-126 Bipolar (BJT) ROHSISCBipolar (BJT)MJE350
TO-126TO-126 Bipolar (BJT) ROHSISCBipolar (BJT)