Overview
The BC857B is a bipolar made by DIOTEC in a SOT-23-3(TO-236-3) package with 3 pins. -55℃~+150℃ 100MHz 100mA 15nA 220 250mW 45V 5V 650mV PNP SOT-23-3(TO-236-3) Bipolar (BJT) ROHS.
PCBKit's library has its KiCad symbol (Transistors:PNP B1 E2 C3, from CERN's library) and its footprint (Package_TO_SOT_SMD:SOT-23-3, from KiCad's library), ready for a KiCad board. JLCPCB lists it (part C3200196).
Symbol
Footprint
Order codes
1- BC857BLCSC C3200196
Pinout
3| Pin | Name | Type |
|---|---|---|
| 1 | B | Passive |
| 2 | E | Passive |
| 3 | C | Passive |
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Is there a KiCad symbol and footprint for the BC857B?
Yes. The symbol is Transistors:PNP B1 E2 C3 and the footprint Package_TO_SOT_SMD:SOT-23-3, both drawn on this page. PCBKit places them on a board for you when you design with it.
What package is the BC857B?
SOT-23-3(TO-236-3), with 3 pins. Its footprint is drawn on this page.
Where is the BC857B datasheet?
DIOTEC publishes it: the Datasheet link on this page opens it.
Where can I order the BC857B?
JLCPCB lists it as part C3200196, with 0 in stock; the sellers' links on this page open their listings.
What can replace the BC857B?
Parts like it in the library: the BC817-40 by UMW, the MMBT3904Q by Diodes Incorporated, the MMBT4401 by MDD and the MMBT3904 1AM -TD(0.3) by TDSEMIC. Check their datasheets: a part that fits the footprint may still differ in its ratings.
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