Announcement

Collapse
No announcement yet.

decrypting cap datecodes

Collapse
X
Collapse
 
  • Page of 1
  • Filter
  • Time
  • Show
Clear All
new posts
Previous template Next
    #1

    decrypting cap datecodes

    someone (i think it was kc8) posted how to decrypt the panasonic datecodes.
    however.. i cant seem to find that thread/post..

    so... any idea how to decrypt those?

    i just recently got a shitload of mixed, "new" (unused) pannys (mostly FJ 6,3V 2200uF 10x20mm, but some others too).. and i just wanted to know how old they really are..

    oh.. and while we're at it..

    Nippon ChemiCon datecodes?
    Sanyo datecodes?

    i guess this could get a general "cap datecode decrypting thread".. *lol*
    (later maybe even sticky...?)
    Tags: None
    #2
    Re: decrypting cap datecodes

    I don't remember the details, but I think I have it in a datasheet somewhere.

    The most important point though is the first digit (on Panasonic) is the year.
    You have to be able to assume what decade they're from, it doesn't tell.

    They're very hard to read, the dark red color must be somebody's idea of a joke.

    Comment

      #3
      Re: decrypting cap datecodes

      would be nice if there's someone volunteering for gathering all infos...
      days are so short when you actually do something..

      Comment

        #4
        Re: decrypting cap datecodes

        Panasonic


        3 different formats are listed in the PDF I have:

        Code:
        (A)(B)(C)(C):
         A=last number of year
         B=month (1-9, O=Oct, N=Nov, D=Dec)
         C=line code in alphabet (A to Z)
        Code:
        (A)(B)(C)(D):
         A=last number of year
         B=month (1-9, O/N/D)
         C=line code (A-Z)
         D=production date (A-Z:1st-26th, 1=27th, 2=28th, etc)
        Code:
        (A)(B)(C)(D)(D)
         A=last number of year
         B=month (1-9, O/N/D)
         C=week (Greek number: I for 1st week, II for 2nd wk)
         D=line code (A-Z)
        I have no idea how one is expected to tell the difference between the first 2 formats. And I don't know why they use greek in the 3rd format. Or why the year is only 1 digit. Or why it's printed in dark red. Or how hard Panasonic tried to come up with a system that sucks this much. Sorry.

        PDF attached. I probably won't be doing any others as I don't think I have documentation for them.
        Attached Files

        Comment

          #5
          Re: decrypting cap datecodes

          My guess for chemicon from looking at them on mobos [that I know how old they are] is that chemicon use a 2 digit code and the first digit is the year.
          For example:
          A 2001 vintage board has Chemicons marked 1 (2)
          A 2004 vintage board has Chemicons marked 4 (7)
          A 2007 vintage board has Chemicons marked 7 (7)
          - I haven't found any where the first digit doesnt make sense for the year.

          At first I thought the character in the ( ) was for the month but I've seen a 'k' used there so I'm not sure about that. If it is for the month then I have no idea what the code is.
          .
          Mann-Made Global Warming.
          - We should be more concerned about the Intellectual Climate.
          -
          Be who you are and say what you feel, because those who mind don't matter and those who matter don't mind.
          - Dr Seuss
          -
          You can teach a man to fish and feed him for life, but if he can't handle sushi you must also teach him to cook.
          -

          Comment

            #6
            Re: decrypting cap datecodes

            My guess for chemicon from looking at them on mobos [that I know how old they are] is that chemicon use a 2 digit code and the first digit is the year.
            i assume it like that too..
            days are so short when you actually do something..

            Comment

              #7
              Re: decrypting cap datecodes

              Sorry to revive this thread. I have a question.

              I was given a microphone where the date codes appear to be late-80s.

              One looks like 87 and on what looks like a transformer, 88.

              But, wondered about the tiny Nichicon cap, looks like a tiny electrolytic cap and says "N8x" Where "x" is a number.
              It's a different format than on early 2000s motherboards.
              ASRock B550 PG Velocita

              Ryzen 9 "Vermeer" 5900X

              32 GB G.Skill RipJaws V F4-3200C16D-32GVR

              Arc A770 16 GB

              eVGA Supernova G3 750W

              Western Digital Black SN850 1TB NVMe SSD

              Alienware AW3423DWF OLED




              "¡Me encanta "Me Encanta o Enlistarlo con Hilary Farr!" -Mí mismo

              "There's nothing more unattractive than a chick smoking a cigarette" -Topcat

              "Today's lesson in pissivity comes in the form of a ziplock baggie full of GPU extension brackets & hardware that for the last ~3 years have been on my bench, always in my way, getting moved around constantly....and yesterday I found myself in need of them....and the bastards are now nowhere to be found! Motherfracker!!" -Topcat

              "did I see a chair fly? I think I did! Time for popcorn!" -ratdude747

              Comment

                #8
                Re: decrypting cap datecodes

                Usually Nichicon has a standard 4-digit date code like (letter prefix) 0123. With the tiny caps (e.g. 5mm height), the 8 probably means 1988, 'x' being the month. I have a few tiny caps pulled from a 1989 Sony camcorder PCB dated between N945 and N950.

                Comment

                Previous template Next
                Working...
                X