# TIP121 (Component)

## Description

5A Ic, 80V Vce, Silicon Darlington Power NPN Transistor, TO\-220
Darlington Power NPN Transistor
TO?220\* 

## Component Details

- **Owner:** kicad\-part\-library
- **Created:** 10/28/2026
- **Last Updated:** 10/28/2026
- **Visibility:** Public
- **Manufacturer Name:** ON Semiconductor
- **Part Type:** Transistor
- **Package or Case Code:** TO\-220\-3\_Vertical
- **Datasheet URL:** https://storage\.googleapis\.com/graviton\-electric\-symbols/document\_assets/user\-uploaded/e064b7ab232c7a3a55054d1e37e52f9c5943dfd384f8ccc389f4753b493fd365\.pdf
- **Manufacturer Part Number:** TIP121

## 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/tip121/stmicroelectronics.html?utm_currency=USD&region=europe) | $0\.1911 | 26K |
| [Digi\-Key](https://www.digikey.com/en/products/detail/nte-electronics-inc/TIP121/11656116) | $1\.90 | 1\.8K |
| [LCSC](https://www.lcsc.com/product-detail/C4366031.html) | $0\.5555 | 0 |
| [Mouser](https://www.mouser.com/en/ProductDetail/STMicroelectronics/TIP121?qs=ljbEvF4DwOPnYIfr1ThkRg%253D%253D) | $1\.08 | 15K |
| [TME](https://www.tme.com/us/en-us/katalog/?queryPhrase=TIP121) | $1\.50 | 1\.1K |
| [Verical](https://www.verical.com/pd/stmicroelectronics-bjt---darlington-TIP121-30778?utm_currency=USD) | N/A | N/A |

- **Part Type:** Transistors
- **Sub-Type:** NPN
- **Manufacturer:** ON Semiconductor
- **MPN:** TIP121
- **Package / Case Code:** 220\-TO
- **Pin Count:** 3
- **Drain To Source Voltage:** 80V
- **Continuous Drain Current:** 5A
## Pins

| Pin | Name | Type |
|-----|------|------|
| 1 | B | Input |
| 2 | C | Passive |
| 3 | E | Passive |

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*Generated from [https://flux\.ai/kicad\-part\-library/tip121\~8vl](https://flux.ai/kicad-part-library/tip121~8vl)*