Posted on Sunday, 26th February 2012 by Auw Jimmy

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I never ever think what is circular connector before – and what it’s all about. But when it comes upon a time when I decide to split my power supply from my preamp, then I start to think how to connect them.

Well, we have several options, but the most common one is by using a connector which commonly called circular or cylindrical connector. I would rather say it’s similar like a DIN connector, but with a lot of option in the size and pin counts.

Before, I plan to go with Amphenol Military Grade one (with extra protection in the harsh environment). But it’s quite difficult to find as my needs is minimum 4 pins @ 2 mm diameter at least. Almost a lot of online store doesn’t have any stock – even if they have, the price is quite high.

So eventually I find this one, Nanaboshi circular, at quite reasonable price and could fill up my requirements.

It has 6 pins, each about 2 mm size. I will use mostly for high voltage up to 300 VDC (but low current) and also for lower voltage but higher current (3-5 A). If if you know me well, I like oversize spec. The connector material should be Copper Alloy with Silver Plated. It looks strong and very good feeling when plugging in them together (if you have played with a lot of this kind of ‘toys’, you can feel whether this is seriously build stuff or not).

The backside of the connector. Need some clean up, but they are ready to rumble within a very short time.

I will use them to connect my power supply for my preamp, as I build them in a separate boxes. The wire shall be 2 mm UP-OCC 6N Copper wire from Neotech, specifically treated based on my personal experience so far… Well, you don’t have to believe me on this ;)



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Posted in Collectible Stuff, DIY Audio | Comments (9)

9 Responses to “Nanaboshi Circular Connector”

  1. Agus Says:
    February 28th, 2012 at 16:39

    Sore Ko,

    Apa gak bahaya kalau HV dan heater dijadikan satu konektor? bisa2 HV masuk ke filamen kalau ad short.

    Salam :)



  2. Auw Jimmy Says:
    February 28th, 2012 at 18:40

    Hi Bro Agus,
    Makanya jangan sampai short donk he he he :)
    Thanks.



  3. Daniel Says:
    March 8th, 2012 at 02:08

    Hi Jimmy! I have very good experiences with ITT connectors: http://www.ittcannon.com/product.aspx?id=1102



  4. Auw Jimmy Says:
    March 10th, 2012 at 19:20

    Hi Daniel,
    Yes, many good options around, but not all of them could be bought locally.
    Thanks.



  5. Howard Says:
    March 16th, 2012 at 19:07

    So where can I buy one. Im in NZ I need the female Nanaboshi 6 pin as in your photo about 12mm dia I have the male mounting one okay
    Howard NZ
    ZL1BXA



  6. Auw Jimmy Says:
    March 16th, 2012 at 21:14

    Hi Howard,
    Sorry, that was the last pair that I got…
    Thanks.



  7. Paul Says:
    March 27th, 2012 at 20:42

    Where can i purchase a single Nanaboshi 2-pin connector in the U.S., style number NJW-202-PF. The pins broke off on one I need to replace.



  8. Eric Says:
    April 8th, 2012 at 20:26

    Yes, where can these be purchase from if your in the USA? I’m looking for 4 pin.



  9. Auw Jimmy Says:
    April 9th, 2012 at 11:22

    Hi Eric,
    I’m not situated on USA, and I got this from a local vintage shop.
    If you are in USA, I believe it’s easier to find this kind of connector. I would suggest to get JAE or Amphenol Military Grade type.
    Thanks.



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