Hi guys do you know part number of right 8 pin chip .it hasn't any number

Community Laser Talk
1

Screenshot_20250101_001758_Google
Screenshot_20250101_001758_Google1812Ă—2060 165 KB

Screenshot_20250101_001755_Google
Screenshot_20250101_001755_Google596Ă—279 81 KB

2

Hi guys do you know part number of right 8 pin chip .it hasn’t any number

3

If you can’t read it, we certainly cant. Perhaps some context for what this board is on would help?

Unless you plan on doing board-level repair, its likely easiest to just acquire a replacement from the manufacturer.

To me it looks like a typical vreg https://canada.newark.com/richtek/rt9068-50gsp/ldo-fixed-5v-0-05a-sop-8/dp/06AC2489 - but we have no way of knowing the specs

1 Like
4

Thanks for answer Colin.this board belong to n30820 neje laser diode

5

The reason it doesn’t have a number is specifically so you can’t get a replacement for it. Some manufacturers go so far as to sand the surface of the package to remove any marks. :frowning_face:

Although it may be a jellybean part, an SOIC-8 like that can be anything:

  • Voltage regulator (as @Colin mentioned)
  • Serial flash memory chip (for calibration / ID data)
  • Digital logic
  • Microcontroller
  • Op amp
  • Specialized analog circuitry

Reverse-engineering the circuit board will give you a netlist. Knowing the obvious chips, you can turn the netlist into a partial schematic. The connections / components around the mystery chip will hint what’s inside, but you can never be sure.

3 Likes
6

Thanks for help.I guessed it would be like that.