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  • Rectifier diodes

    Will these work in place of a 1N4007? near as I can gather they should but I just want to check with those who know better. Heres the specs


    Temp range -85 to 320 F
    peak inverse voltage-1000v
    foward current -1.5A
    peak surge current(8.3ms) --50 A
    foward voltage drop(VF)at (lf)- 1.1V
    peak reverse leakage current at(77* F)-5.0uA
    typical total capacitance 20pF
    typical thermal resistance junction to lead-77*F/W
    typical thermal resistance junction to ambient- 131* F/W




    Thanks Bob
    "Reality is an illusion albeit a very persistant one " Albert Einstein

  • #2
    I don't see any red flags. Same reverse voltage and slightly higher current ratings. Out of curiosity, what is the part number?
    -Mike

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    • #3
      Originally posted by defaced View Post
      I don't see any red flags. Same reverse voltage and slightly higher current ratings. Out of curiosity, what is the part number?
      Not sure. Radio Shack had lower voltage ratings 1N4003,1N4005 but this one is just listed as 1.5A/1000V rectifier diode. Bob
      "Reality is an illusion albeit a very persistant one " Albert Einstein

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      • #4
        Radio Shack also has a grab bag of rectifier diodes. You've got to kinda fiddle with the bag to see what's in there, but I was able to get 8 1n4007s from it. Good for when you're in a pinch.
        Rectifier Diodes (25-Pack) - RadioShack.com
        -Mike

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        • #5
          Thanks. I was trying to blindly figure out why my Crate VC50 was humming with the volume down.After replacing the diodes with no luck it occured to me what Enzo said about measuring the tube bias. Well I didnt have any means of doing so and (no probe or 1 ohm resistors) so I grabbed a bunch of old EL84's. After trying a few different "sets" the hum was gone. I can only figure I had a very unbalanced set in it or even one wasnt working- Well I need a probe or at least resistors around to check the simple stuff first!
          Well lessons learned the hard way are easily forgotten so theres a positive! Plus I got some more practice at desoldering and soldering on a PCB. Bob
          "Reality is an illusion albeit a very persistant one " Albert Einstein

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          • #6
            BTW- The diodes seem to be working just fine. Never had an amp as sensitive to power tubes as this one-either that or I just had bad luck and put together two sets that were very out of balance. Its time for some way to measure the bias in my EL84 amps-be it resistors or a probe. Thanks guys. I'd delete this thread if I could. Bob
            "Reality is an illusion albeit a very persistant one " Albert Einstein

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            • #7
              Originally posted by rockon1 View Post
              Thanks guys. I'd delete this thread if I could. Bob
              Yeah - I'd delete many of my own dang threads here if I could too. c'est la vie
              Building a better world (one tube amp at a time)

              "I have never had to invoke a formula to fight oscillation in a guitar amp."- Enzo

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