
Overview
The BAS21SW is a switching Diode made by Nexperia in a SOT-323 package with 3 pins. 1 Pair Series Connection 1.25V@200mA 100nA@200V 200mW 225mA 250V 50ns 9A SOT-323 Switching Diodes ROHS.
PCBKit's library has its KiCad symbol (Diode:BAS21, from KiCad's library) and its footprint (Package_TO_SOT_SMD:SOT-323_SC-70, from KiCad's library), ready for a KiCad board. JLCPCB lists it (part C91888).
Symbol
Footprint
Parameters
8- Current - Rectified
- 225mA
- Diode Configuration
- 1 Pair Series Connection
- Non-Repetitive Peak Forward Surge Current
- 9A
- Pd - Power Dissipation
- 200mW
- Reverse Leakage Current (Ir)
- 100nA@200V
- Reverse Recovery Time (trr)
- 50ns
- Voltage - DC Reverse(Vr)
- 250V
- Voltage - Forward(Vf@If)
- 1.25V@200mA
Order codes
1- BAS21SW,115LCSC C91888
Pinout
3| Pin | Name | Type |
|---|---|---|
| 1 | A | Passive |
| 2 | NC | Not connected |
| 3 | K | Passive |
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<iframe src="https://pcbkit.io/embed/parts/nexperia/BAS21SW" title="BAS21SW 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/BAS21SW.jpg" alt="BAS21SW" width="1200" height="900">[](https://pcbkit.io/parts/nexperia/BAS21SW)Questions
Is there a KiCad symbol and footprint for the BAS21SW?
Yes. The symbol is Diode:BAS21 and the footprint Package_TO_SOT_SMD:SOT-323_SC-70, both drawn on this page. PCBKit places them on a board for you when you design with it.
What package is the BAS21SW?
SOT-323, with 3 pins. Its footprint is drawn on this page.
Where is the BAS21SW datasheet?
Nexperia publishes it: the Datasheet link on this page opens it.
Where can I order the BAS21SW?
JLCPCB lists it as part C91888, with 0 in stock; the sellers' links on this page open their listings.
What can replace the BAS21SW?
Parts like it in the library: the BAS21AW by Nexperia, the BAS21W by Nexperia, the BAV99W by FOSAN and the BAT54W by Xirun Semiconductor. Check their datasheets: a part that fits the footprint may still differ in its ratings.
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