# BAS21 (Component)

## Description

250V, 0\.4A, High\-speed Switching Diode, SOT\-23
diode
SOT?23\* 

## Component Details

- **Owner:** kicad\-part\-library
- **Created:** 10/28/2026
- **Last Updated:** 10/28/2026
- **Visibility:** Public
- **Package or Case Code:** SOT\-23
- **Manufacturer Name:** Diodes
- **Part Type:** Diode
- **Datasheet URL:** https://storage\.googleapis\.com/graviton\-electric\-symbols/document\_assets/user\-uploaded/bc60e6e1a25310809f12eb22694cdcc50030182bb58c75dc94d302d9eee78c7f\.pdf
- **Manufacturer Part Number:** BAS21

## Distributor Pricing (qty 1)

*Pricing shown for quantity 1. For price breaks and other quantities, open in Flux.*

| Distributor | Unit Price (qty 1) | Stock |
|------------|--------------------|-------|
| [Arrow](https://www.arrow.com/en/products/bas21/diotec-semiconductor-ag.html?utm_currency=USD&region=asia) | $0\.0198 | 0 |
| [Digi\-Key](https://www.digikey.com/en/products/detail/diotec-semiconductor/BAS21/13163945) | N/A | N/A |
| [HQonline](https://www.hqonline.com/product-detail/switching-diodes-on-bas21-1019908184) | $0\.00855 | 880 |
| [LCSC](https://www.lcsc.com/product-detail/C5204712.html) | N/A | N/A |
| [Mouser](https://www.mouser.com/en/ProductDetail/Diotec-Semiconductor/BAS21?qs=OlC7AqGiEDnzVzFrWKHzQA%253D%253D) | $0\.12 | 60K |
| [TME](https://www.tme.com/us/en-us/katalog/?queryPhrase=BAS21-DIO) | N/A | N/A |
| [Verical](https://www.verical.com/pd/diotec-semiconductor-ag-rectifier-BAS21-1829896?utm_currency=USD) | N/A | N/A |

- **Part Type:** Diodes
- **Sub-Type:** Other
- **Manufacturer:** Diodes
- **MPN:** BAS21
- **Package / Case Code:** SOT\-23
- **Pin Count:** 3
- **Reverse Voltage:** 250V
## Pins

| Pin | Name | Type |
|-----|------|------|
| 1 | A | Passive |
| 2 | NC | Not Connected |
| 3 | K | Passive |

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*Generated from [https://flux\.ai/kicad\-part\-library/bas21\~cbt](https://flux.ai/kicad-part-library/bas21~cbt)*