# BC557 (Component) ## Description Bipolar Transistors - BJT BC557 TO-92-3_L4.9-W3.7-P1.27-L LCSC Part Number: C180418 JLCPCB Part Class: Extended Part Manufactured by CJ(江苏长电/长晶) ## Component Details - **Owner:** lcsc - **Created:** 10/30/2024 - **Last Updated:** 4/29/2025 - **Visibility:** Public - **JLCPCB Part Class:** Extended Part - **Manufacturer Name:** CJ(江苏长电/长晶) - **Package or Case Code:** TO-92-3_L4.9-W3.7-P1.27-L - **Product Info Url:** https://lcsc.com/product-detail/Transistors-NPN-PNP_BC557-C-420-800_C180418.html - **LCSC Part Number:** C180418 - **Part Type:** Bipolar Transistors - BJT - **Datasheet URL:** https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/1809291527_Jiangsu-Changjing-Electronics-Technology-Co---Ltd--BC557-RANGE-420-800_C180418.pdf - **Manufacturer Part Number:** BC557 - **Used in:** 3 projects ## Distributor Pricing (qty 1) *Pricing shown for quantity 1. For price breaks and other quantities, open in Flux.* | Distributor | Unit Price (qty 1) | Stock | |------------|--------------------|-------| | [Digi-Key](https://www.digikey.com/en/products/detail/onsemi/BC557/976392) | N/A | N/A | | [LCSC](https://www.lcsc.com/product-detail/C50229578.html) | N/A | N/A | | [Mouser](https://www.mouser.com/ProductDetail/onsemi/BC557?qs=UMEuL5FsraDV3YjHnEYU%2Fw%3D%3D) | N/A | N/A | - **Part Type:** Transistors - **Sub-Type:** BJT - **Manufacturer:** CJ Electronics - **MPN:** BC557 - **Mount Type:** PCB - **Package / Case Code:** 92-TO - **Pin Count:** 3 ## Pins | Pin | Name | Type | |-----|------|------| | 1 | C | | | 2 | B | | | 3 | E | | --- *Generated from [https://www.flux.ai/lcsc/bc557](https://www.flux.ai/lcsc/bc557)*