

Overview
The BFS20 is a bipolar made by Nexperia in a SOT-23 package with 3 pins. -65℃~+150℃ 1 NPN 100nA 20V 250mW 25mA 40 450MHz 4V NPN SOT-23 Bipolar (BJT) ROHS.
PCBKit's library has its KiCad symbol (Pinmap_Generic:Q_NPN_1B_2E_3C, from PCBKit's generic symbols) and its footprint (Package_TO_SOT_SMD:SOT-23, from KiCad's library), ready for a KiCad board. 199,347 are in stock at JLCPCB (part C73088). 2 open-source boards in 2 repositories on GitHub use it.
Symbol
Footprint
Parameters
11- Collector - Emitter Voltage VCEO
- 20V
- Configuration
- Standalone
- Current - Collector Cutoff
- 100nA
- Current - Collector(Ic)
- 25mA
- DC Current Gain
- 40
- Emitter-Base Voltage(Vebo)
- 4V
- Number
- 1 NPN
- Operating Temperature
- -65℃~+150℃
- Pd - Power Dissipation
- 250mW
- Transition frequency(fT)
- 450MHz
- type
- NPN
Order codes
2- BFS20,235LCSC C549728
- BFS20,215LCSC C73088
Pinout
3| Pin | Name | Type |
|---|---|---|
| 1 | B | Input |
| 2 | E | Passive |
| 3 | C | Passive |
Open-source boards using it
All 2- 4 layers80 × 40 mm

- 2 layers36 × 49.9 mm

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<iframe src="https://pcbkit.io/embed/parts/nexperia/BFS20" title="BFS20 in PCBKit" width="100%" height="480" style="border:0;border-radius:12px" allow="fullscreen" loading="lazy"></iframe><img src="https://pcbkit.io/embed/parts/nexperia/BFS20.jpg" alt="BFS20" width="1200" height="900">[](https://pcbkit.io/parts/nexperia/BFS20)Questions
Is there a KiCad symbol and footprint for the BFS20?
Yes. The symbol is Pinmap_Generic:Q_NPN_1B_2E_3C and the footprint Package_TO_SOT_SMD:SOT-23, both drawn on this page. PCBKit places them on a board for you when you design with it.
What package is the BFS20?
SOT-23, with 3 pins. Its footprint is drawn on this page.
Where is the BFS20 datasheet?
Nexperia publishes it: the Datasheet link on this page opens it.
Where can I order the BFS20?
JLCPCB lists it as part C73088, with 199,347 in stock; the sellers' links on this page open their listings.
What can replace the BFS20?
Parts like it in the library: the S8050 by hongjiacheng, the SS8050 by hongjiacheng, the MMBT5551 by hongjiacheng and the MMBT5401 by hongjiacheng. Check their datasheets: a part that fits the footprint may still differ in its ratings.
Which open-source boards use the BFS20?
2 boards in 2 repositories on GitHub; the most starred are listed on this page, with their KiCad files.
Parts like it
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