Skip to the content
PCBKitNew board
MMBTA42 on a board, in 3D

MMBTA42

STMicroelectronics

-55℃~+150℃ 1 NPN 100nA 300V 350mW 500mA 500mV 50MHz 6V 80 NPN TO-236 Bipolar (BJT) ROHS

Extended
DatasheetJLCPCBLCSCst/MMBTA42
Category
Bipolar (BJT)
Package
TO-236
Pins
3

Overview

The MMBTA42 is a bipolar made by STMicroelectronics in a TO-236 package with 3 pins. -55℃~+150℃ 1 NPN 100nA 300V 350mW 500mA 500mV 50MHz 6V 80 NPN TO-236 Bipolar (BJT) ROHS.

PCBKit's library has its KiCad symbol (Transistor_BJT:MMBTA42, from KiCad's library) and its footprint (Package_TO_SOT_SMD:SOT-23, from KiCad's library), ready for a KiCad board. 14,338 are in stock at JLCPCB (part C118745).

Symbol

123
Transistor_BJT:MMBTA42From KiCad's library

Footprint

123
Package_TO_SOT_SMD:SOT-23From KiCad's library

Parameters

11
Collector - Emitter Voltage VCEO
300V
Current - Collector Cutoff
100nA
Current - Collector(Ic)
500mA
DC Current Gain
80
Emitter-Base Voltage(Vebo)
6V
Number
1 NPN
Operating Temperature
-55℃~+150℃
Pd - Power Dissipation
350mW
Transition frequency(fT)
50MHz
Vce Saturation(VCE(sat))
500mV
type
NPN

Order codes

1

Pinout

3
The pins of the MMBTA42
PinNameType
1BInput
2EPassive
3CPassive

Show this part on your page

A live frame, for any web page
<iframe src="https://pcbkit.io/embed/parts/st/MMBTA42" title="MMBTA42 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/st/MMBTA42.jpg" alt="MMBTA42" width="1200" height="900">
A picture that opens the part, for a README
[![MMBTA42](https://pcbkit.io/embed/parts/st/MMBTA42.jpg?size=s)](https://pcbkit.io/parts/st/MMBTA42)

Questions

Is there a KiCad symbol and footprint for the MMBTA42?

Yes. The symbol is Transistor_BJT:MMBTA42 and the footprint Package_TO_SOT_SMD:SOT-23, both drawn on this page. PCBKit places them on a board for you when you design with it.

What package is the MMBTA42?

TO-236, with 3 pins. Its footprint is drawn on this page.

Where is the MMBTA42 datasheet?

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

Where can I order the MMBTA42?

JLCPCB lists it as part C118745, with 14,338 in stock; the sellers' links on this page open their listings.

What can replace the MMBTA42?

Parts like it in the library: the S8050 by YONGYUTAI, the MMBTA92 by hongjiacheng, the MMBTA42 by hongjiacheng and the MMBT2907ALT1G by onsemi. Check their datasheets: a part that fits the footprint may still differ in its ratings.

Parts like it

8