Need HELP identifying parts

Collapse
X
Collapse
 
  • Page of 1
  • Time
  • Show
Clear All
new posts
Previous template Next
  • tech2014
    Badcaps Veteran
    • Aug 2014
    • 807
    • Canada
    #1

    Need HELP identifying parts

    They are SMD diodes. One is a zener. I can identify the marking on the one on the right,T4, which I think is a IN4148, the other I can't tell if its an 82, or B2. Can anyone identify these parts? thanks

    Attached Files

    if you find these attachements useful please consider making a small donation to the site

    Tags: None
    • mu2
      Badcaps Veteran
      • Oct 2009
      • 217
      #2
      Re: Need HELP identifying parts

      Hi,

      I think it's an 82 and that would be a 4.3 volt zener.
      Take a look at this link that identifies smd parts.
      http://www.marsport.org.uk/smd/mainframe.htm

      Mike

        Comment

        Previous template Next

        Related Topics

        Collapse
        • caspian
          What Zener Diodes on a Linear Power Supply
          by caspian
          Dear members,

          I have a linear variable power supply with unknown brand name that I used for voltage injection.
          Then it failed. I discovered that its transistors (Q1 and Q2) are shorted.
          In addition, I discovered that its zener diodes are defective.
          I can replace the burned transistors.
          But I do not know the model of the zener diodes. the model number is not marked on the zener diodes.
          Therefore, I cannot replace the zener diodes.
          I do not want to test the zener diodes in a test circuit to discover their model or value.
          no schematics are available...
          05-26-2025, 12:38 PM
        • Dvsr
          On M-Audio AV40 active studio speaker's two zener diodes get really hot.
          by Dvsr
          Hi. I need help from wiser guys. I am amateur in electronics and can't figure this out by myself.
          I bought faulty speakers, M-Audio AV40's. Other speaker has all the electronics in it and the other speaker is just passive one powered by the other speaker's amp. Original problem with the speakers was loud buzzing. I figured out that there is something wrong with the capacitors. I went ahead and replaced every electrolytic capacitor on the PCB. The caps are good quality and have the same values as the original ones.
          After replacing the caps I started testing out the speaker. It seemed...
          4 Photos
          09-10-2025, 10:20 AM
        • hobostove
          Corsair RM1000e - Help identify 5VSB Zener diode
          by hobostove
          Hey there guys. I've got a Corsair power supply that's come across my bench dead. I usually don't mess with power supplies, but it's a slow week so I'm giving it a whirl.

          Taking it apart I heard a screw rattling around inside, and when I got it apart I found a couple blown components near what I think is the 5VSB area.

          There's a 22ohm resistor that's melted and open, but it still has the bands.

          The other part is a zener diode and it's top went to jesus, so I can't read the marking.

          It looks like the diode connects the source and drain of a TNY284...
          03-27-2025, 02:25 PM
        • UL161
          Need Help Identifying Parts on a crossover and a few other newbie questions
          by UL161
          Hi I am trying to refurbish this crossover with some higher quality poly-caps/parts... The speaker is a in-wall Polk 65-RT... Key questions I have are:

          1) What in the world is the yellow part on the board (label is MET 1.0J 100V)?... Should I even consider replacing it?
          2) The 470uF cap.... Does anyone know have a suggestion as to where I can find a reasonable audio quality polycap near that value? (or at least 3 160s or the like?) { I don't want to spend $70 just to replace this one if I can) (maybe even someone looking at this circuit could even tell if this cap is important...
          09-29-2024, 03:17 PM
        • NConstantinou
          Lenovo Yoga370 CIZS3 LA-E292P Identify parts
          by NConstantinou
          please someone help to identify part PQ512 . IT IS A SMALL mosfet and is burned out
          thanks
          04-27-2024, 12:11 AM
        • Loading...
        • No more items.
        Working...