(Topic ID: 257461)

Bally display 140v zener (1n5275a substitution)?

By Drewscruis

4 years ago


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  • 19 posts
  • 5 Pinsiders participating
  • Latest reply 3 years ago by Quench
  • Topic is favorited by 1 Pinsider

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    #1 4 years ago

    Just curious if this would be a good sub for the original 1n5275a since it's obsolete. I know it has a higher wattage but this seem's like a potential sub

    https://www.mouser.com/ProductDetail/625-Z4KE140A-E3

    #3 4 years ago
    Quoted from Quench:

    Yes, those Z4KE140A zeners are what I use.
    BTW, you can still get 1N5275B (tighter tolerance) but they are expensive.

    Yeah, I saw those. But I think the cheapest was $5 or $7. These were .36 cents each.

    5 months later
    #8 3 years ago

    Figured I'd post a pic of the Z4KE140A installed on a driver board. No modifications were needed.

    20200519_142148 (resized).jpg20200519_142148 (resized).jpg
    #13 3 years ago
    Quoted from Quench:

    I like that you've used red and black wires for the C23 electrolytic capacitor - that's what I always do.
    BTW, what's the voltage rating on those two replacement green polyester capacitors at C27 and C28?

    This was a kit I got from big daddy enterprise, said they are supposed the be rated for 630v on th kit, but now I'm doubting that.

    #16 3 years ago

    I'll have to look when I get home from work.

    #17 3 years ago

    Here is a pic from the other kit I have. Same part I have installed. It has H2J103J on it

    20200520_194918 (resized).jpg20200520_194918 (resized).jpg

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