As I checked the transistor, it works fine up to 15 as VCC, but after that, the transistor gets turned on, and it starts burning at 22V. My transistor starts burning after turning on the power supply.

3(1) Are your 2N2222 actually 2N2222A, from eBay or DigiKey? (2) Why Rb connected to ground? (3) Do you have any project/testing spec? – tlfong01 Nov 3 at 11:35.

3Immediately fail, or fail after a specific period or number of operations? Is that a switch on the transistor base? – HandyHowie Nov 3 at 11:09.

I just assembled them on the breadboard, and the power supply is a variable linear 0-30 volt 3A power supply(MEGATEK-MP-3003). – John Jin Nov 3 at 10:19

2You need to provide more details like PCB layout, full schematic, photographs, power supply type and surge resilience, anti-static precautions in place and used etc. – Andy aka Nov 3 at 9:49.

I just connected the RBRB to the ground to ensure that the transistor is off. I bought my transistor from markets in Shenzhen. As I checked the transistor, it works fine up to 15 V15 V as VCC, but after that, the transistor gets turned on, and it starts burning at 22 V22 V. However, in the lab, I’ve seen different 2N2222s fail (get turned on) and burn with the below circuit.

( Leave a comment ) 2N2222 burning out in the lab at 22 VĪccording to the datasheet, a 2N2222 can handle VCE(max)VCE(max) up to 40 V40 V.

Free download 2n2222 pinout