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BC557

Jiangsu Changjing Electronics Technology (CJ)

TO-92 Bipolar (BJT) ROHS

Extended
JLCPCBLCSCcj/BC557
Category
Bipolar (BJT)
Package
TO-92
Pins
5

Overview

The BC557 is a bipolar made by Jiangsu Changjing Electronics Technology (CJ) in a TO-92 package with 3 pins. TO-92 Bipolar (BJT) ROHS.

PCBKit's library has its KiCad symbol (Transistor_BJT:BC557, from KiCad's library) and its footprint (Package_TO_SOT_THT:TO-92_Inline, from KiCad's library), ready for a KiCad board. 619 are in stock at JLCPCB (part C47089430).

Symbol

123
Transistor_BJT:BC557From KiCad's library

Footprint

123
Package_TO_SOT_THT:TO-92_InlineFrom KiCad's library

Order codes

1

Pinout

3
The pins of the BC557
PinNameType
1CPassive
2BInput
3EPassive

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A live frame, for any web page
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A picture
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A picture that opens the part, for a README
[![BC557](https://pcbkit.io/embed/parts/cj/BC557.jpg?size=s)](https://pcbkit.io/parts/cj/BC557)

Questions

Is there a KiCad symbol and footprint for the BC557?

Yes. The symbol is Transistor_BJT:BC557 and the footprint Package_TO_SOT_THT:TO-92_Inline, both drawn on this page. PCBKit places them on a board for you when you design with it.

What package is the BC557?

TO-92, with 3 pins. Its footprint is drawn on this page.

Where can I order the BC557?

JLCPCB lists it as part C47089430, with 619 in stock; the sellers' links on this page open their listings.

What can replace the BC557?

Parts like it in the library: the S8050 by JSMSEMI, the S8550 by JSMSEMI, the 2N3904 by JSMSEMI and the 2N3904BU by onsemi. Check their datasheets: a part that fits the footprint may still differ in its ratings.

Parts like it

8