I need ask about this part"STC04DE170HV" if it is valid part number or not as this is found in mouser database as ST number

What is that part supposed to be ?

I think not a STM32 microcontroller.

The number code "170HV" sounds suspiciously like that adjustable 1.5 .. 30V voltage regulator, with HV for horizontal-mount TO220 casing.

also this part

STI7105-SDK11ZB

These are obsolete parts.

Why would you need to know about them?

JW

waclawek.jan

what's the proof of that ?

is there PCN or any link shows obsolete parts ??

I need to know about them that there is customer request data about them

> what's the proof of that ?

Casual googling yields hints that the former is an unusual power transistor which appears to never took off, the latter being a video decoder chip, both more than a decade old.

This is a primarily user-driven forum and you're unlikely to get better answer here. You or your customer may want to contact ST directly.

JW

> You or your customer may want to contact ST directly.

Or one of ST's official distributors in your area.