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Electronics => Repair => Topic started by: ElectricGuy on February 02, 2016, 03:12:29 pm

Title: SMD component identification
Post by: ElectricGuy on February 02, 2016, 03:12:29 pm

Hi;

Can somebody help me confirm that the component on the red circle of the image is a SN74LVC1G3157.
The component is marked 3157 and is placed in a TFT display board.
IT gets really hot, over 160º measured with a "special edition" Flir E4, and if i freeze it with freeze spray the display board works.
Also, is the package SC-70?

Thank you.

Title: Re: SMD component identification
Post by: pmichel on February 03, 2016, 12:40:57 am

The part might be SGM3157 (datasheet shows 3157 as the marking instead of C5 on the other P/N), but comparing the two datasheets they look similar enough to probably be interchangeable.

http://en.sg-micro.com/index.php?m=default.products_show&id=188 (http://en.sg-micro.com/index.php?m=default.products_show&id=188)

Title: Re: SMD component identification
Post by: pmichel on February 03, 2016, 12:44:36 am

That would also match the SC-70 package too.

Title: Re: SMD component identification
Post by: ElectricGuy on February 03, 2016, 11:08:42 am

Thanks

Title: Re: SMD component identification
Post by: PA0PBZ on February 03, 2016, 11:47:36 am

Quote from: ElectricGuy on February 02, 2016, 03:12:29 pm

IT gets really hot, over 160º measured with a "special edition" Flir E4, and if i freeze it with freeze spray the display board works.

So probably the part is not broken but heavily overloaded?

Title: Re: SMD component identification
Post by: ElectricGuy on February 13, 2016, 11:19:35 pm

Just an uptdate.!

Changed the part and it works great now!