
Overview
The 2N3904 is a bipolar made by onsemi in a TO-92-3 package with 3 pins. -55℃~+150℃ 1 NPN 1.5W 100 200mA 300MHz 300mV 40V 50nA 6V NPN TO-92-3 Bipolar (BJT) ROHS.
PCBKit's library has its KiCad symbol (Transistor_BJT:2N3904, from KiCad's library) and its footprint (Package_TO_SOT_THT:TO-92_Inline, from KiCad's library), ready for a KiCad board. JLCPCB lists it (part C3201969).
Symbol
Footprint
Parameters
7- Collector-Emitter Breakdown Voltage (Vceo)
- 40V
- Current - Collector Cutoff
- 50nA
- Current - Collector(Ic)
- 200mA
- DC Current Gain (hFE@Ic,Vce)
- 100@10mA,1V
- Operating Temperature
- -55℃~+150℃@(Tj)
- Transition frequency(fT)
- 300MHz
- Vce Saturation(VCE(sat))
- 300mV@50mA,5mA
Order codes
1- 2N3904LCSC C3201969
Pinout
3| Pin | Name | Type |
|---|---|---|
| 1 | E | Passive |
| 2 | B | Input |
| 3 | C | Passive |
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<iframe src="https://pcbkit.io/embed/parts/onsemi/2N3904" title="2N3904 in PCBKit" width="100%" height="480" style="border:0;border-radius:12px" allow="fullscreen" loading="lazy"></iframe><img src="https://pcbkit.io/embed/parts/onsemi/2N3904.jpg" alt="2N3904" width="1200" height="900">[](https://pcbkit.io/parts/onsemi/2N3904)Questions
Is there a KiCad symbol and footprint for the 2N3904?
Yes. The symbol is Transistor_BJT:2N3904 and the footprint Package_TO_SOT_THT:TO-92_Inline, both drawn on this page. PCBKit places them on a board for you when you design with it.
What package is the 2N3904?
TO-92-3, with 3 pins. Its footprint is drawn on this page.
Where is the 2N3904 datasheet?
onsemi publishes it: the Datasheet link on this page opens it.
Where can I order the 2N3904?
JLCPCB lists it as part C3201969, with 0 in stock; the sellers' links on this page open their listings.
What can replace the 2N3904?
Parts like it in the library: the S8050 by JSMSEMI, the S8550 by JSMSEMI, the 2N3904 by JSMSEMI and the 2N3904BU by onsemi. Check their datasheets: a part that fits the footprint may still differ in its ratings.
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