Maker Pro
Maker Pro

IC trying to identify from ST

marcusmacman

May 15, 2015
6
Joined
May 15, 2015
Messages
6
hi all,

I'm trying to identify a component on a small AC/DC power module. It's an 8 pin surface mount IC made by STMicoelectronic and it has two identification markings

1) ST E 9615 (the E doesn't look like a capitol E, it almost looks like a £ symbol?)

2) 33428 (the second digit 3 could be an 8)

If you have an help on where i can look or better still if you recognize this component would you let me know.
kind regards
Marcus
 

davenn

Moderator
Sep 5, 2009
14,296
Joined
Sep 5, 2009
Messages
14,296
hi Marcus
welcome :)

show us a sharp well lit photo of the circuit board
 

shrtrnd

Jan 15, 2010
3,876
Joined
Jan 15, 2010
Messages
3,876
Did you check the STMicroelectronics website?
Manufacturers usually have a page in their data search functions with a break-down of their chip identification methods/codes.
 

marcusmacman

May 15, 2015
6
Joined
May 15, 2015
Messages
6
Hi there, thanks for your replies. It's quite exciting getting back into electronics from a gap of 15 years and with forums like these. Appreciate any feedback.
Attached should be the IC I'm trying to check. There is a resistor or something burnt out too but I thought if I can look to see what the chip is doing and I may be able to determine what the component is and its value.
Thanks for your help and I'll check out the ST website.
Kind regards
Marcus
 

Attachments

  • image.jpg
    image.jpg
    130.2 KB · Views: 75
  • image.jpg
    image.jpg
    219.3 KB · Views: 111

marcusmacman

May 15, 2015
6
Joined
May 15, 2015
Messages
6
thanks Dave, i think you are right. The component just above the chip is completely burnt out. I was hoping to determine what it could be and it's value based off the LM334 but i will need to do more studying :) attached is the component in question.
thanks again for your help
Marcus
 

Attachments

  • resistor.png
    resistor.png
    409.4 KB · Views: 130

davenn

Moderator
Sep 5, 2009
14,296
Joined
Sep 5, 2009
Messages
14,296
ahhh that resistor .... wast really visible in your first pic

and that 3 pin chip at the top is also toast ... its got a huge hole in it where it's gone bang
 

marcusmacman

May 15, 2015
6
Joined
May 15, 2015
Messages
6
That's right, Big Bang !! My plan is to replace what I think didn't make it after the bang then start with a very high resistor and work down until it works. The module is an AC to DC converter with 4 DC outputs. I'll try and map the circuit and post it on here. That'll keep me busy for a while.
Thanks
Marcus
 
Top