Overview
The BC549B is a bipolar made by onsemi in a TO-92-3 package with 3 pins. 1 NPN 100mA 15nA 200 300MHz 30V 500mW 600mV 6V NPN TO-92-3 Bipolar (BJT) ROHS.
PCBKit's library has its KiCad symbol (LibrePCB_Base:BC549, from Librepcb) and its footprint (LibrePCB_Base:TO-92-WIDE_default, from Librepcb), ready for a KiCad board. JLCPCB lists it (part C3201797).
Symbol
Footprint
Parameters
10- Collector - Emitter Voltage VCEO
- 30V
- Current - Collector Cutoff
- 15nA
- Current - Collector(Ic)
- 100mA
- DC Current Gain
- 200
- Emitter-Base Voltage(Vebo)
- 6V
- Number
- 1 NPN
- Pd - Power Dissipation
- 500mW
- Transition frequency(fT)
- 300MHz
- Vce Saturation(VCE(sat))
- 600mV
- type
- NPN
Order codes
1- BC549BLCSC C3201797
Pinout
3| Pin | Name | Type |
|---|---|---|
| 1 | C | Passive |
| 2 | B | Passive |
| 3 | E | Passive |
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<iframe src="https://pcbkit.io/embed/parts/onsemi/BC549B" title="BC549B in PCBKit" width="100%" height="480" style="border:0;border-radius:12px" allow="fullscreen" loading="lazy"></iframe><img src="https://pcbkit.io/embed/parts/onsemi/BC549B.jpg" alt="BC549B" width="1200" height="900">[](https://pcbkit.io/parts/onsemi/BC549B)Questions
Is there a KiCad symbol and footprint for the BC549B?
Yes. The symbol is LibrePCB_Base:BC549 and the footprint LibrePCB_Base:TO-92-WIDE_default, both drawn on this page. PCBKit places them on a board for you when you design with it.
What package is the BC549B?
TO-92-3, with 3 pins. Its footprint is drawn on this page.
Where is the BC549B datasheet?
onsemi publishes it: the Datasheet link on this page opens it.
Where can I order the BC549B?
JLCPCB lists it as part C3201797, with 0 in stock; the sellers' links on this page open their listings.
What can replace the BC549B?
Parts like it in the library: the BC546B by onsemi, the BC547A by onsemi, the BC556A by DIOTEC and the BC557C by DIOTEC. Check their datasheets: a part that fits the footprint may still differ in its ratings.
