Need help to identify part

[AdiMacG]

Hello,
I can't identify this MOSFET component part BA5 NI OS JMD3909, who is the manufacturer? to find the datasheet and find an equivalent replacement. Thanks for your help !!

 

[ZipZapOuch]

The 3909 is likely the date code (39th week of 2009).
The Mosfets is likely a Chinese-made part with the 5N10 being the critical parameters
5Amp
N-channel
100V

 

[AdiMacG]

Thanks for your insight on this.

 

[aliarifat794]

You can check this datasheet. https://www.panjit.com.tw/upload/datasheet/PJMD390N65EC.pdf
After searching JMD3909 at alldatasheet, I got this suggestion.

 

[ZipZapOuch]

You can check this datasheet. https://www.panjit.com.tw/upload/datasheet/PJMD390N65EC.pdf
After searching JMD3909 at alldatasheet, I got this suggestion.

Unlikely

 

[ZipZapOuch]

Here it is...

 

[sagor1]

Part number is likely closer to BA5N10S

 

[ZipZapOuch]

Part number is likely closer to BA5N10S

Or EMBA5N10AS according to the datasheet and on page 5 it's dropping the A (I assume for space).

https://web.excelliancemos.com/datasheet/MOS/EMBA5N10AS.pdf

 

[AdiMacG]

Thanks a million for finding that !!

 

[ZipZapOuch]

Thanks a million for finding that !!

I'll send you my PayPal account info.

 

[AdiMacG]

Unfortunately replacing the MOSFET didn't solve the issue, the PCB fault is elsewhere, back to zero

 

[AdiMacG]

I'm wondering if the SMD bridge rectifier TMBF310 can be reliably tested in circuit or do you really have to desolder it to be sure?
Diode test was correct in circuit.
Then tested voltage with power on, that there was input voltage AC 230V and on the output + and - for DC voltage measurement my multimeter gives a 110V but then quickly dropped to zero and beeped like a continuity test. Strange or normal?