Tda2050 chip doubts

Status
This old topic is closed. If you want to reopen this topic, contact a moderator using the "Report Post" button.
Hi everyone!!

I'm here again for the same reason, that's my Love for audio amp chips :)
I love making chip amps as they get ready so simply and easily and also with low budget. So, I bought a couple of tda2050 chips from my local market in India just to make cool amp for my computer. I knew that ST has discontinued it long back in 2013 but still out of love for them I bought it and before assembly I tested it with my multimeter. And to my disappointment I found that one of the tda2050 failed the test. On seeing the chip thoroughly I found a white burn mark on the chip which looks like it bursted already!
On testing the other tda2050, I found them ok except with a trimmed pin on another chip. So I came to conclusion that these tda2050 although available still around $2 bugs or so is original one but it's recovered from old or rejected gadgets or maybe some damaged TVs or home theaters and that's why there are chances of getting damaged chips or even working chips with trimmed legs coz they're extracted from boards and then resold
 

Attachments

  • 15757143311711126536428.jpg
    15757143311711126536428.jpg
    957 KB · Views: 135
  • 15757144711591824353723.jpg
    15757144711591824353723.jpg
    456.5 KB · Views: 133
Status
This old topic is closed. If you want to reopen this topic, contact a moderator using the "Report Post" button.