4 layers100 × 80 mm
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Overview
The BAV21W is a switching Diode made by Diodes Incorporated in a SOD-123 package with 2 pins. -65℃~+150℃@(Tj) 1.25V@200mA 100nA 200V 200mA 250mW 50ns Standalone SOD-123 Switching Diodes ROHS.
PCBKit's library has its KiCad symbol (Diode:BAV21, from KiCad's library) and its footprint (Diode_THT:D_DO-35_SOD27_P7.62mm_Horizontal, from KiCad's library), ready for a KiCad board. 36,565 are in stock at JLCPCB (part C155214). 5 open-source boards in 5 repositories on GitHub use it.
Symbol
Footprint
From the datasheet
6- Reverse voltage, most
- 200 V · working peak reverse voltage, max · p. 2
- Forward current, most
- 400 mA · continuous, max; terminals kept at ambient temperature · p. 2
- Forward voltage
- 1 V · IF = 100mA, max · p. 2
- Forward voltage
- 1.25 V · IF = 200mA, max · p. 2
- Junction, hottest
- 150 °C · operating junction temperature, max · p. 2
- Junction to air (SOD123)
- 500 K/W · junction to ambient air, FR-4 board with minimum recommended pad layout · p. 2
Parameters
11- Current - Rectified
- 400mA
- Diode Configuration
- Standalone
- Junction Temperature(Max)
- 150℃
- Operating Junction Temperature Range
- -65℃~+150℃
- Pd - Power Dissipation
- 250mW
- Reverse Leakage Current (Ir)
- 100nA
- Reverse Recovery Time (trr)
- 50ns
- Thermal Resistance(Junction to Ambient)
- 500℃/W
- Voltage - DC Reverse(Vr)
- 200V
- Voltage - Forward(Vf)
- 1V
- Voltage - Forward(Vf@If)
- 1.25V@200mA
Order codes
1- BAV21W-7-FLCSC C155214
Pinout
2| Pin | Name | Type |
|---|---|---|
| 1 | K | Passive |
| 2 | A | Passive |
Open-source boards using it
All 5- 6 layers73 × 100 mm
- 4 layers65 × 69.5 mm
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- 6 layers56.6 × 33.7 mm
Battery
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Show this part on your page
<iframe src="https://pcbkit.io/embed/parts/diodes/BAV21W" title="BAV21W in PCBKit" width="100%" height="480" style="border:0;border-radius:12px" allow="fullscreen" loading="lazy"></iframe><img src="https://pcbkit.io/embed/parts/diodes/BAV21W.jpg" alt="BAV21W" width="1200" height="900">[](https://pcbkit.io/parts/diodes/BAV21W)Questions
Is there a KiCad symbol and footprint for the BAV21W?
Yes. The symbol is Diode:BAV21 and the footprint Diode_THT:D_DO-35_SOD27_P7.62mm_Horizontal, both drawn on this page. PCBKit places them on a board for you when you design with it.
What package is the BAV21W?
SOD-123, with 2 pins. Its footprint is drawn on this page.
Where is the BAV21W datasheet?
Diodes Incorporated publishes it: the Datasheet link on this page opens it.
Where can I order the BAV21W?
JLCPCB lists it as part C155214, with 36,565 in stock; the sellers' links on this page open their listings.
What can replace the BAV21W?
Parts like it in the library: the BAV21WQ by Diodes Incorporated, the 1N4148M9 by YONGYUTAI, the 1N4148D3 by TECH PUBLIC and the BAV21W by HANGYU MICROELECTRONICS. Check their datasheets: a part that fits the footprint may still differ in its ratings.
Which open-source boards use the BAV21W?
5 boards in 5 repositories on GitHub; the most starred are listed on this page, with their KiCad files.
Parts like it
8
BAV21WQ
SOD-123-55℃~+150℃ 1 Independent 1.25V@200mA 100nA 200V 250mW 50ns SOD-123 Switching Diodes ROHSDiodes IncorporatedSwitching Diodes1N4148M9
SOD-923SOD-923 Switching Diodes ROHSYONGYUTAISwitching Diodes1N4148D3
DFN0603-2DFN0603-2 Switching Diodes ROHSTECH PUBLICSwitching DiodesBAV21W
SOD-123SOD-123 Switching Diodes ROHSHANGYU MICROELECTRONICSSwitching Diodes1N914BWS(ES)
SOD-323SOD-323 Switching Diodes ROHSElecSuperSwitching Diodes1N4448HWS
SOD-323SOD-323 Switching Diodes ROHSTECH PUBLICSwitching DiodesBAV21W-HF
SOD-123SOD-123 Switching Diodes ROHSComchipSwitching Diodes1N4148WTR
SOD-123SOD-123 Switching Diodes ROHSSMCSwitching Diodes