« previous next »
Pages: [1]   Go Down

Author Topic: Identify diode part number  (Read 604 times)

0 Members and 1 Guest are viewing this topic.

Offline JohnnyPTopic starter

  • Regular Contributor
  • *
  • Posts: 66
  • Country: us
    • J&S Electronics
Identify diode part number
« on: October 06, 2019, 03:53:43 am »
I'm reverse engineering a circuit and need to know what diode they are using.

It's an SMB size.

In the top row it says R 1 7

In the bottom row it says fpA42
« Last Edit: October 06, 2019, 04:45:46 am by JohnnyP »
Logged
Thinking is hard work
 

Offline jhpadjustable

  • Frequent Contributor
  • **
  • Posts: 295
  • Country: us
  • Salt 'n' pepper beard
Re: Identify diode part number
« Reply #1 on: October 06, 2019, 05:09:59 am »
If you search "smd marking r17" on the web, you may find an SMD marking code book with the answer. Does a 1N4007 seem about right for the circuit?
https://www.onsemi.com/products/discretes-drivers/diodes-rectifiers/rectifiers/mra4007
Logged
"There are more things in heaven and earth, Arduino, than are dreamt of in your philosophy."
 

Offline JohnnyPTopic starter

  • Regular Contributor
  • *
  • Posts: 66
  • Country: us
    • J&S Electronics
Re: Identify diode part number
« Reply #2 on: October 06, 2019, 06:25:17 am »
Just looked it up on Mouser.  I think you've got it.

I used 800v S2K/KA from Diodes Inc thinking they would be better.  Now I have to figure out why they didn't work.
Logged
Thinking is hard work
 

Offline JohnnyPTopic starter

  • Regular Contributor
  • *
  • Posts: 66
  • Country: us
    • J&S Electronics
Re: Identify diode part number
« Reply #3 on: October 06, 2019, 06:30:20 am »
Welp, wasn't the diodes.  I think I know what's going on...
Logged
Thinking is hard work
 
Pages: [1]   Go Up
« previous next »

Share me

Digg  Facebook  SlashDot  Delicious  Technorati  Twitter  Google  Yahoo
Smf

 


EEVblog Main Site EEVblog on Youtube EEVblog on Twitter EEVblog on Facebook EEVblog on Odysee