Identifying Semiconductor manufactures

Collapse
X
Collapse
 
  • Page of 1
  • Time
  • Show
Clear All
new posts
Previous template Next
  • Harvey
    Badcaps Veteran
    • Apr 2007
    • 264
    #1

    Identifying Semiconductor manufactures

    Its a pain isn't it!

    I've just spend the last few hours trying to find some details about some Mosfets I need to replace. The only numbers on them are

    D463 BX6D22

    and

    4408 BD5K35

    With a logo that looks like a uppercase A in a circle (slanted backwards slightly)

    Lots of websites like http://www.chipdocs.com/logos/logotypes.html and http://freespace.virgin.net/matt.wai...ogos/index.htm, but, typically none of them have the logo I'm looking for.

    Anyone with any ideas? The D463 mosfets are from a Foxconn 6150K8MD mobo and the 4408's are in a Elonex CL50/51 (I think) Laptop.

    I'm fairly sure that the BX.. and BD.. are datecodes, but other than that I'm lost.
    Tags: None
    • kikkoman
      Badcaps Veteran
      • Jul 2007
      • 691
      #2
      Re: Identifying Semiconductor manufactures

      packages?

      there's a Si4408DY 20V N-channel FET in a So8 package.
      "Every normal man must be tempted at times to spit on his hands, hoist the black flag, and begin slitting throats." - H.L. Mencken

        Comment

        • Bobdee
          Badcaps Veteran
          • Jun 2008
          • 461
          #3
          Re: Identifying Semiconductor manufactures

          AO= alpha omega
          https://cdn.badcaps-static.com/pdfs/...8809cc4d0b.pdf
          Are you sure thats a D on the other one

            Comment

            • Harvey
              Badcaps Veteran
              • Apr 2007
              • 264
              #4
              Re: Identifying Semiconductor manufactures

              Originally posted by Bobdee
              AO= alpha omega
              https://cdn.badcaps-static.com/pdfs/...8809cc4d0b.pdf
              Are you sure thats a D on the other one
              Yea, that looks like the logo. I'm pretty sure its a D436 - I've attached a few pictures, but its a sod to get the lighting right. The others in the board are D438 and they are fine. The mess on the board is just flux.
              Attached Files
              Last edited by Harvey; 11-29-2009, 10:25 AM.

                Comment

                • Bobdee
                  Badcaps Veteran
                  • Jun 2008
                  • 461
                  #5
                  Re: Identifying Semiconductor manufactures

                  Your first post said D463 when it was D436 lol
                  http://pdf1.alldatasheet.com/datashe...MD/AOD436.html
                  should do you

                    Comment

                    • Harvey
                      Badcaps Veteran
                      • Apr 2007
                      • 264
                      #6
                      Re: Identifying Semiconductor manufactures

                      Thats the one. It does help when you haven't got a dyslexic keyboard...

                      I'll have a dig around later and see what I have, they don't seem to be anything special so I think it'll be worth a risk with some equivalents, at least for a test. I'll no doubt need recapping as its the potentially bad KZJ caps, but as yet I don't even know if it works at all.

                        Comment

                        • Harvey
                          Badcaps Veteran
                          • Apr 2007
                          • 264
                          #7
                          Re: Identifying Semiconductor manufactures

                          Ah well, I tried some replacement mosfets in the Foxconn 6150K8MD but the VRM just creeps up to about 0.8V when powered on, so it looks like the control chip (ISL6566) has been fried when the original mosfets shorted.

                          Another one to strip for bits

                            Comment

                            Previous template Next

                            Related Topics

                            Collapse
                            • BlackScreen_22
                              Harman Kardon sub TS11 (ds15 amplifer) blows fuse and mosfets
                              by BlackScreen_22
                              Hi, I'll start by saying that I'm not an expert and I've reached a point where I don't know what to try/do anymore...
                              Starting from the beginning: I opened this subwoofer for the first time with a very strong smell of burnt electrical components, I realize that on the amplifier board there is a hole between V+ OUT and GND about the size of a finger, the damaged components were the shorted mosfets, two damaged zener diodes and two capacitors. I bought everything, I fixed the hole by cutting the pcb and putting a piece of a perforated board.
                              I had no problems connecting mosfets and capacitors,...
                              08-27-2024, 12:46 PM
                            • kotel studios
                              Intel D865PERL - no Vcore after replacing MOSFETs and MOSFET drivers
                              by kotel studios
                              Hi,

                              Finally got time to fix this board up.
                              At first it didn't give any POST codes. Turns out it was an unsupported Celeron D cpu. After dropping in an Celery 2.6gHz the CPU came out of reset with clock signal, but still no post codes. For a while it did work when I applied pressure to the ADP3168 chip, but on next reboot the MOSFETs started to burn. Then I left it as is for months.

                              Now I came back prepared. Replaced the bad MOSFETs and the ADPxx18k drivers. Now I don't get any MOSFETs blowing up issues anymore. But sadly, the Vcore is missing. The whole VRM isn't...
                              04-22-2025, 05:08 AM
                            • flerre
                              Gainward Phantom GTX 980 - mosfets w/ integrated driver NCP5369
                              by flerre
                              Hi!

                              Managed to get a Gainward Phantom GTX 980 in an auction for a bin with components.
                              No video out so I started fault finding and found a blown fuse for 3 mosfets. Started checking for shorts and found what I think is a short through all of those 3 mosfets; 0.1 ohms between "VIN" input and "VSWH" output. All mosfets in this gpu are the same ones (NCP5369) with integrated drivers and when I tried measuring the other ones through these ports they were somewhere in the kilo-ohms range.

                              So, could I safely assume all of these 3 mosfets are...
                              03-13-2022, 12:14 PM
                            • NanoTesting
                              Lenovo Ideapad 15IIL05, turns on and off with charger BUT works by injecting 20v after main mosfets
                              by NanoTesting
                              I got a 15-IIL05 that failed to turn on BUT IT DID TRY TO TURN ON and then turned off after 30+- seconds, i disassembled it and found a screw loose inside the case.
                              With charger it turns on, fan spins but gives no image.
                              Tested main mosfets no short, tested 3.3v,5v,DRAM, CPU etc and they were present.
                              Reflashed BIOS, same problem.
                              Replaced both main mosfets.
                              Checked main mosfets again and i noticed that they closed once the laptop shut down, so i decided to bypass them and used a bench PSU to check how much power the laptop was drawing while trying to turn on, 20v@3A,...
                              10-30-2024, 10:48 PM
                            • debruina
                              Pioneer VSX-859RDS with all mosfets gone
                              by debruina
                              Hi,

                              I am working on a pioneer VSX-859. It started with only one problem but i ended up with a lot more. Probably caused by me

                              Anyway it started with a DSP NG message on the display. That one was easy and was caused by a bad 5v rail. Replaced the capacitors and the message was gone. Everything seems to be working except for a blob sound every time i switched from source. Eventually i tracked that down to a leaking battery on the analog board. Repaired some via's and lines and everything worked ok. That same circuit also caused a not working DCdetect protection. ...
                              08-29-2023, 11:54 AM
                            • Loading...
                            • No more items.
                            Working...