Hello TI team
I use several kind of TI's linear regulators from long time and had never issues with them. Recently I've bought ICs from a new source and around 5% of them just don't work. I suspect ICs may be counterfeits, because they look slighty different than those i had been buying before (font size, shape of metal substrate).
Before making further steps I want to be sure provenance of the components.
Here some data:
LM1941CS - they are marked JM11RD LM1941CS P+
I don't possess reel anymore, but wrote down LOT: EMAC2520C019, D/C 1106
LM1117SX-ADJ - these are functioning correctly, but also look suspiciously, marked JM13RC LM1117S-ADJ P+
I have 1500pcs in stock, reel and carton package seem to be original, LOT: EMAC7820C019, D/C 1118
I'll be appreciated if you could confirm whether components are original or not. I can deliver some photos if necessary.
Thanks, best regards
Tomasz Karwat