Datasheet and component replacement for AMCC Q20025-0080B

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  • Spork Schivago
    Badcaps Legend
    • Mar 2012
    • 4734
    • United States of America
    #1

    Datasheet and component replacement for AMCC Q20025-0080B

    Hello folks,

    I've been seeking help on another forum while BadCaps was down but didn't have much luck so far. I have an HP 16534A 500 MHz bandwidth oscilloscope module for my HP 16702B logic analyzer. When I bought the module, the guy told me the triggering wasn't working correctly. I found two missing SMD caps on the circuit for this U509 component. I believe they're 10 nF SMD caps. I'm thinking maybe MLCC. The caps don't have any markings or anything on them and it's impossible to find a schematic.

    I had a couple questions. Does anyone know how I can figure out what voltage my SMD replacement caps need to be?

    I tore off the heatsink for U509 and I found a metal screw under there, on the leads for the chip. The head of the screw was broken off and it looked like someone was trying to drill it out. My guess is the screw ended up flying in the air and got stuck under this heatsink and when someone went to try the module out, it shorted out the chip and made those two caps explode off the board.

    The U509 chip says stuff on it:
    AMCC 9816

    Q20025-0080B
    309245Z


    I believe it's made by AMCC and the part number is Q20025-0080B. I haven't been able to find any, anywhere on the net. I've tried Alibaba. They list people as having them. But every time I go to start an order, it sends the seller a message and changes the part number to some stupid LED thing. I'm guessing they just don't have any. I think this component is a Logic Array, whatever that is. Any help would be greatly appreciated!

    Thank you!
    -- Law of Expanding Memory: Applications Will Also Expand Until RAM Is Full
    Tags: None
    • stj
      Great Sage 齊天大聖
      • Dec 2009
      • 31138
      • Albion
      #2
      Re: Datasheet and component replacement for AMCC Q20025-0080B

      HP schems should be around.
      that chip number is bs - obviously a HP part number.

      when the attachements work, post good foto's of the area.

        Comment

        • Spork Schivago
          Badcaps Legend
          • Mar 2012
          • 4734
          • United States of America
          #3
          Re: Datasheet and component replacement for AMCC Q20025-0080B

          Originally posted by stj
          HP schems should be around.
          that chip number is bs - obviously a HP part number.

          when the attachements work, post good foto's of the area.
          Will do! I've searched high and low for the schematics. I could find the service manual, but no schematics. I've contacted KeySight, who know owns the rights and they said they've been long since destroyed. I've also contacted AMCC. Found a datasheet for the AMCC Q20000 series. It lists a 100-pin Q20025 in there. Some sort of Logic Array / Gate Array. Found a PDF saying AMCC sold information to Rochester Electronics back in 2011 so they could start recreating the Q20000 series chips and it said they already recreated the hardest of all of them. But when I go to their site, they list AMCC parts, but no Q20025 or anything like that. I've sent them an e-mail as well and I'm waiting for a response.

          It'd be great if I could find a replacement part Stj! Thanks for trying to help! I'll post a pic when they start working again.
          -- Law of Expanding Memory: Applications Will Also Expand Until RAM Is Full

            Comment

            • Spork Schivago
              Badcaps Legend
              • Mar 2012
              • 4734
              • United States of America
              #4
              Re: Datasheet and component replacement for AMCC Q20025-0080B

              A guy on AliExpress says they have the Q20025-0080B made by AMCC. They just got back to me. They said they're 40$ a pop. Sounds a bit high, doesn't it? Can people on that site normally be trusted you think? I've bought stuff from there before, but never anything where I had to contact the seller first, like with this product...
              -- Law of Expanding Memory: Applications Will Also Expand Until RAM Is Full

                Comment

                • Spork Schivago
                  Badcaps Legend
                  • Mar 2012
                  • 4734
                  • United States of America
                  #5
                  Re: Datasheet and component replacement for AMCC Q20025-0080B

                  Wow, seems like everyone replied all at once! Another company has them, Q20025-0080B 2pcs AMCC QFP $37.5/pcs in stock New and original...

                  Southern Electronics says unit price is 26$. Does that mean a piece or for both I wonder...they accept PayPal.

                  32$ a pop from HK RUIK COMPANY LIMITED.

                  BHT International wants 32$ a pop too.
                  -- Law of Expanding Memory: Applications Will Also Expand Until RAM Is Full

                    Comment

                    • Spork Schivago
                      Badcaps Legend
                      • Mar 2012
                      • 4734
                      • United States of America
                      #6
                      Re: Datasheet and component replacement for AMCC Q20025-0080B

                      Wow, one of these sites seemed to of sent my request off to multiple people out in China / Hong Kong. I got six more replies from people offering to sell me them. They all quoted my original message to SeekIC.com. Crazy.
                      -- Law of Expanding Memory: Applications Will Also Expand Until RAM Is Full

                        Comment

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