Skip to the content
PCBKitNew board
BC556 on a board, in 3D

BC556

onsemi

1 PNP 100mA 110 150MHz 15nA 500mW 5V 650mV 65V PNP Standalone TO-92-3 Bipolar (BJT) ROHS

Extended
DatasheetJLCPCBLCSConsemi/BC556
Category
Bipolar (BJT)
Package
TO-92-3
Pins
5

Overview

The BC556 is a bipolar made by onsemi in a TO-92-3 package with 3 pins. 1 PNP 100mA 110 150MHz 15nA 500mW 5V 650mV 65V PNP Standalone TO-92-3 Bipolar (BJT) ROHS.

PCBKit's library has its KiCad symbol (Transistor_BJT:BC556, from KiCad's library) and its footprint (Package_TO_SOT_THT:TO-92_Inline, from KiCad's library), ready for a KiCad board. JLCPCB lists it (part C3201994).

Symbol

123
Transistor_BJT:BC556From KiCad's library

Footprint

123
Package_TO_SOT_THT:TO-92_InlineFrom KiCad's library

Parameters

11
Collector - Emitter Voltage VCEO
65V
Configuration
Standalone
Current - Collector Cutoff
15nA
Current - Collector(Ic)
100mA
DC Current Gain
110
Emitter-Base Voltage(Vebo)
5V
Number
1 PNP
Pd - Power Dissipation
500mW
Transition frequency(fT)
150MHz
Vce Saturation(VCE(sat))
650mV
type
PNP

Order codes

1

Pinout

3
The pins of the BC556
PinNameType
1CPassive
2BInput
3EPassive

Show this part on your page

A live frame, for any web page
<iframe src="https://pcbkit.io/embed/parts/onsemi/BC556" title="BC556 in PCBKit" width="100%" height="480" style="border:0;border-radius:12px" allow="fullscreen" loading="lazy"></iframe>
A picture
<img src="https://pcbkit.io/embed/parts/onsemi/BC556.jpg" alt="BC556" width="1200" height="900">
A picture that opens the part, for a README
[![BC556](https://pcbkit.io/embed/parts/onsemi/BC556.jpg?size=s)](https://pcbkit.io/parts/onsemi/BC556)

Questions

Is there a KiCad symbol and footprint for the BC556?

Yes. The symbol is Transistor_BJT:BC556 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 BC556?

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

Where is the BC556 datasheet?

onsemi publishes it: the Datasheet link on this page opens it.

Where can I order the BC556?

JLCPCB lists it as part C3201994, with 0 in stock; the sellers' links on this page open their listings.

What can replace the BC556?

Parts like it in the library: the 2N3904 by JSMSEMI, the 2N3904BU by onsemi, the PN2222ABU by onsemi and the BC547B by LGE. Check their datasheets: a part that fits the footprint may still differ in its ratings.

Parts like it

8