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Old 24th April 2010, 10:20 PM   #1
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Default Tube Sockets for oddball miniatures

I'm trying to come up with PCB mount tube socket for a Russian IV-12 VFD tube.
It's a 10-pin miniature, in the same circle as a 9-pin miniature (12mm pin dia.) but with closer pin spacing (32.7 degrees vs 36 degrees)

I tried some Mill-Max PCB pin receptacles. Best is 0312 but non-stocked and $0.89 per pin = $8.90 a socket. The 0314 is great but the collar shorts to adjacent pins. Not sure who else makes receptacles.
Someone else ripped pins out of cheapo plastic 9 pin sockets and used them.

Any ideas?
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Old 25th April 2010, 12:01 AM   #2
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Old 25th April 2010, 06:28 AM   #3
mobyd is offline mobyd  New Zealand
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Quote:
Originally Posted by prairiemystic View Post
I'm trying to come up with PCB mount tube socket for a Russian IV-12 VFD tube.
It's a 10-pin miniature, in the same circle as a 9-pin miniature (12mm pin dia.) but with closer pin spacing (32.7 degrees vs 36 degrees)

I tried some Mill-Max PCB pin receptacles. Best is 0312 but non-stocked and $0.89 per pin = $8.90 a socket. The 0314 is great but the collar shorts to adjacent pins. Not sure who else makes receptacles.
Someone else ripped pins out of cheapo plastic 9 pin sockets and used them.

Any ideas?
I use the sockets out of D25 female connectors and use this :
Valve & Nixie Socket Calculator
to calculate the positions of the PCB pads when I make a Protel footprint
for the component.
M
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Old 25th April 2010, 06:34 AM   #4
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Thanks, I checked again and I had the wrong dimensions in my original post.
No luck finding PCB mount 10-pin miniature sockets. There are at least three Euro types: B10A, B10B, B10C, 10C12 bases, so it is confusing.

The Decal B10C base - 10 pin, 1.02mm (0.040") dia. pins, 11.9mm (0.469"), 34 pin spacing, gap 54 - matches the IV-12, 6X9, ECF200, PCF200 etc. It's similar to Russian РШ23 (RSH23) or the B9A 9-pin base.

There are some ceramic solder lug ones from China on Ebay, but no PCB mount.

I found Euro tube socket info here:
Pentodensockel - Pentode Bases
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Old 25th April 2010, 07:45 AM   #5
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Quote:
Originally Posted by mobyd View Post
I use the sockets out of D25 female connectors and use this :
Valve & Nixie Socket Calculator
to calculate the positions of the PCB pads when I make a Protel footprint
for the component.
M
That's a great idea! I'd thought D-sub pins are smaller than tube pins (1mm/0.040") but looking again, I find they're the same size. What part are you using? I found solder-cup ends which I assume you press thru your PC board. HDP-20 series AMPLIMITE D-Sub Connectors (AMP 66569-3) looked okay with about 0.075" PCB holes.

Otherwise, it's the (expensive) machined contact pins Mill-Max 0314 or Keystone micro-jack #1414 would work for tube sockets.
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Old 25th April 2010, 11:09 AM   #6
mobyd is offline mobyd  New Zealand
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Quote:
Originally Posted by prairiemystic View Post
What part are you using? I found solder-cup ends which I assume you press thru your PC board.
Yep, they are just regular solder bucket cheapies, sorry don't have a specific part number - 25 pin sockets for around a buck seems a good deal!.
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