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whats in side this

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    notnock started this thread.
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    whats in side this

    just started trying to figure out whats inside this capacitor, i think it looks like a quarter of a tank killer uranium bolt, it's somethig metal, zink, nickle, be nice if silver oxide it's a MOTOROLA 17500MFD 20VDC
    (23D83093G27) 235-7710Y 85 degree C (U.S. PAT. NO. 35118499.) any help would be great

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    Quote Originally Posted by notnock View Post
    just started trying to figure out whats inside this capacitor, i think it looks like a quarter of a tank killer uranium bolt, it's somethig metal, zink, nickle, be nice if silver oxide it's a MOTOROLA 17500MFD 20VDC
    (23D83093G27) 235-7710Y 85 degree C (U.S. PAT. NO. 35118499.) any help would be great
    Silver capacitor would have some weight to it.


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    Motorola like most manufactures have their own and unique part numbering methods. They usually only agree on engineer specification methods and then only because that's what governmental agencies require(they want Gov. contracts so they comply with engineering standards). Motorola uses a prefix system for the most part. I'll give some "simplistic" fictitious part numbers, just for the demonstration of Motorola's prefix methodology. It would bore the crap out of me and all others to give a complete list, so I'll give a few prefix examples.

    1-XXXXXX
    Miscellaneous Assemblies (Motorola supplied, Contracted or Customer Supplied)
    6-XXXXX Resistors,
    Carbon and all other composition types
    15-XXXXX Housing, Cases and Covers (formed)
    17-XXXXX Resistors, wire wound (Fixed and adjustable)
    21-XXXXX Capacitors (fixed)
    23-XXXXX Capacitors (Electrolytic)
    33-XXXXX Nameplates and Decals
    44-XXXXX Gears
    66-XXXXX Tools (service and installation)

    There are many, many more Motorola part number prefix codes. (9 different ones between 23 and 33, going into hundreds of prefix codes (am I boring you yet). In notnock and Alloys examples, 23 would identify both to be electrolytic capacitor (there are different types of electrolytic capacitors). Some do have Silver cases, most do not, for cost reasons mostly Aluminum case are all that is needed.

    NOTE: VERY IMPORTANT (
    EXTREMELY IMPORTANT). That all other digits and letters (prefix, body, and suffix) be included when researching parts. A part number lacking either prefix or suffix or with the omission of any digit or letters, makes identifying much harder!

    I prefer to work with engineering data sheets, this requires measuring and weighing individual components and devices (minus attachments like hardware).

    When measuring or weighing: Statement like "About 4" long and 1/2" in diameter" or "weighs just about a half ounce". Is not how it's done if one really wants to know "what is this made of"?

    Pictures really help, but a measurement like the capacitor measured 1.062" L x 0.375" D and weighed 13.9 g, usually leads to: a Silver case with 100% nickel leads worth $50 a pound

    I'll keep working on positive ID, but recheck those case numbers, and if you can add measurements and weights as accurately as possible. Maybe silver values will rise with gold prices. (They will if politicians and banks keep sticking it to us).
    Last edited by bigburtchino; 01-15-2016 at 10:36 PM.

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    notnock started this thread.
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    71.2 grams 1.375" diameter x 2.500" length with MOTOROLA
    TYPE FP
    3600MFD 35VDC
    23D83093G23
    235-7618Y 85 degree C
    U.S. PAT. NO.3518499




    03. half my family worked at radio collins, and a uncle was a white shirt, nobody knows boo, i hear ya about being heavy, not the case here paper and a grayish black metal foil, dry, no electrolite, some of the boards say 1976, droped small chunk in acid and keyboard films, didn't act like aluminum, i'll try it again by itself, thanks you have alot of insight, i was told starting out in my trade not to specialize at one thing, "oh i was a fool", thanks again for your insight

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