Is there a big difference between these 2 diodes?

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  • NeedsMoreFlux
    Senior Member
    • Oct 2017
    • 121
    • California
    #1

    Is there a big difference between these 2 diodes?

    I'm trying to figure out why the axial diode blew out another chip that I still have not been able to identify.

    These are both 1n5819.

    I pulled one like this(which I believe was a 1n5819):

    https://cdn.badcaps-static.com/pdfs/...5718d86211.pdf

    and replaced it with one like this(off ebay):



    I checked and did not find any shorts/bridging from the new solder joints.

    And now I am trying to figure out what this 8 legged, SOIC 8/Sop 8 AN3102 chip is, since that appears to be a chinese number.

    If anyone knows what that AN3102 number means or is replaced with, I will be forever in your debt. And I have a big box of spare parts if you ever need anything.

    Thank You!
    Disclaimer: Don't trust a thing I say-I am frequently wrong!!!

    I have tons of spare parts, some used, some N.O.S. ham transistors and caps. Message me if you need any parts.

    Some of the things I've fixed:
    60" Vizio-bad LED's. iBook G4: Resoldered VCC Plug. Geo Tracker ECU: Swollen / Leaking capacitors. Windows Laptop: Soldered broken LVDS wires. Dryer: Burned contact on temp switch. Oven in R.V.: Bad contacts in relays-Exploded by the looks of them! Samsung Oven: Burned contacts on Relays. MSI Motherboard: BSOD-Swollen capacitors, bad graphics card, Moved SATA Input from SATA 1 to SATA 2 plug
    Tags: None
    • budm
      Badcaps Legend
      • Feb 2010
      • 40746
      • USA
      #2
      Re: Is there a big difference between these 2 diodes?

      5817 is only rate at 20V, 5819 is rated at 40V so you should never go with lower Voltage than the original.
      Never stop learning
      Basic LCD TV and Monitor troubleshooting guides.
      http://www.badcaps.net/forum/showthr...956#post305956

      Voltage Regulator (LDO) testing:
      http://www.badcaps.net/forum/showthr...999#post300999

      Inverter testing using old CFL:
      http://www.badcaps.net/forum/showthr...er+testing+cfl

      Tear down pictures : Hit the ">" Show Albums and stories" on the left side
      http://s807.photobucket.com/user/budm/library/

      TV Factory reset codes listing:
      http://www.badcaps.net/forum/showthread.php?t=24809

        Comment

        • NeedsMoreFlux
          Senior Member
          • Oct 2017
          • 121
          • California
          #3
          Re: Is there a big difference between these 2 diodes?

          Oops, haha. I don't know how that happened. I clicked on a 5819, at least I think I did!

          But yah, thanks. I was reading up on those different diode numbers.

          I did order 5819's off ebay, and after soldering it in-it blew another chip!
          Disclaimer: Don't trust a thing I say-I am frequently wrong!!!

          I have tons of spare parts, some used, some N.O.S. ham transistors and caps. Message me if you need any parts.

          Some of the things I've fixed:
          60" Vizio-bad LED's. iBook G4: Resoldered VCC Plug. Geo Tracker ECU: Swollen / Leaking capacitors. Windows Laptop: Soldered broken LVDS wires. Dryer: Burned contact on temp switch. Oven in R.V.: Bad contacts in relays-Exploded by the looks of them! Samsung Oven: Burned contacts on Relays. MSI Motherboard: BSOD-Swollen capacitors, bad graphics card, Moved SATA Input from SATA 1 to SATA 2 plug

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