Author Topic: Looking for 4mm PCB mount banana plugs  (Read 4238 times)

0 Members and 1 Guest are viewing this topic.

Offline Mr. ScramTopic starter

  • Super Contributor
  • ***
  • Posts: 9821
  • Country: 00
  • Display aficionado
Looking for 4mm PCB mount banana plugs
« on: January 21, 2019, 07:42:20 pm »
I've spent a couple of evenings looking for 4mm PCB mount banana plugs with specific properties. I've been striking out, so maybe the forum can help. I'm looking for beryllium copper plugs, gold plated, longish and made by a somewhat decent manufacturer. I'd prefer barrel plugs, but other styles are feasible too. The mounting style should be thread, inner thread, rivet or something similar. That's not too critical.

I've been able to find plugs with all the properties minus the gold plating or all the properties minus the beryllium copper or plugs that are too short. I could make do with either of the first two, but I can hardly imagine that specific combination not existing anywhere. However, I'm not finding them.
 

Offline nsrmagazin

  • Regular Contributor
  • *
  • !
  • Posts: 156
  • Country: ru
« Last Edit: January 24, 2019, 06:23:40 am by nsrmagazin »
Hi all!
If you like the post, please press "thanks".
 

Offline Mr. ScramTopic starter

  • Super Contributor
  • ***
  • Posts: 9821
  • Country: 00
  • Display aficionado
Re: Looking for 4mm PCB mount banana plugs
« Reply #2 on: January 22, 2019, 02:36:59 pm »
Thanks! Unfortunately, I'm actually looking for a plug and not a socket. I've added an example picture of a plug. I don't think it's asking for a lot, considering all the various properties are readily available in various combinations. Finding them combined in one is proving to be illusive.

« Last Edit: January 22, 2019, 02:39:02 pm by Mr. Scram »
 

Offline nsrmagazin

  • Regular Contributor
  • *
  • !
  • Posts: 156
  • Country: ru
Re: Looking for 4mm PCB mount banana plugs
« Reply #3 on: January 23, 2019, 12:24:39 am »
Maybe this. But I took it from AliExpress directly and I don't know how good the quality is.
http://s.click.aliexpress.com/e/iuYpsAy
Hi all!
If you like the post, please press "thanks".
 
The following users thanked this post: Mr. Scram

Offline mvs

  • Frequent Contributor
  • **
  • Posts: 370
  • Country: de
Re: Looking for 4mm PCB mount banana plugs
« Reply #4 on: January 23, 2019, 11:02:38 am »
I've been able to find plugs with all the properties minus the gold plating or all the properties minus the beryllium copper or plugs that are too short. I could make do with either of the first two, but I can hardly imagine that specific combination not existing anywhere. However, I'm not finding them.
Do you have some special reason to search for this unicorn? Good quality brass connectors should have barrel springs out of proper spring material like phosphor bronze, beryllium copper, etc.
For wire termination i would recommend you SKS Hirschmann LAS N WS Au, but unfortunately they do not produce comparable banana plugs for PCB mount.
 

Offline beanflying

  • Super Contributor
  • ***
  • Posts: 7375
  • Country: au
  • Toys so very many Toys.
Re: Looking for 4mm PCB mount banana plugs
« Reply #5 on: January 23, 2019, 11:32:55 am »
Coffee, Food, R/C and electronics nerd in no particular order. Also CNC wannabe, 3D printer and Laser Cutter Junkie and just don't mention my TEA addiction....
 
The following users thanked this post: Mr. Scram

Online MiDi

  • Frequent Contributor
  • **
  • Posts: 629
  • Country: ua
Re: Looking for 4mm PCB mount banana plugs
« Reply #6 on: January 23, 2019, 03:57:49 pm »
Probably the STÄUBLI 22.1005 or similar would come close to your desired unicorn.
They could be soldered from both pcb sides easily and should be quite robust, but possibly you can add a custom thread to screw it - if that is main concern.
They can be used as both plugs and jacks.

 
The following users thanked this post: Mr. Scram

Offline Mr. ScramTopic starter

  • Super Contributor
  • ***
  • Posts: 9821
  • Country: 00
  • Display aficionado
Re: Looking for 4mm PCB mount banana plugs
« Reply #7 on: January 23, 2019, 09:47:43 pm »
Do you have some special reason to search for this unicorn? Good quality brass connectors should have barrel springs out of proper spring material like phosphor bronze, beryllium copper, etc.
For wire termination i would recommend you SKS Hirschmann LAS N WS Au, but unfortunately they do not produce comparable banana plugs for PCB mount.
I'm mostly looking for what seems to be the optimal solution from a thermal EMF point of view. Brass connectors with beryllium spring barrels wouldn't be perfect but acceptable, but I haven't found those without them being too short or having nickel plating.
 

Offline Mr. ScramTopic starter

  • Super Contributor
  • ***
  • Posts: 9821
  • Country: 00
  • Display aficionado
Re: Looking for 4mm PCB mount banana plugs
« Reply #8 on: January 23, 2019, 09:49:52 pm »
Probably the STÄUBLI 22.1005 or similar would come close to your desired unicorn.
They could be soldered from both pcb sides easily and should be quite robust, but possibly you can add a custom thread to screw it - if that is main concern.
They can be used as both plugs and jacks.


I had found those plugs as I've scoured the Stäubli catalogue a few times, but hadn't realised the metal part may possibly be ordered separately. That may be just the thing.

Ah, I hadn't noticed they are brass before. Still, decent option.
« Last Edit: January 23, 2019, 10:36:52 pm by Mr. Scram »
 

Offline timgiles

  • Regular Contributor
  • *
  • Posts: 236
  • Country: se
  • Programmer, DB architect
Re: Looking for 4mm PCB mount banana plugs
« Reply #9 on: January 23, 2019, 10:28:37 pm »
I tried the same search a few weeks ago. I ended up with the picture that you posted in reply 2. Ill likely order a set of 4 of those RS ones beanflying posted as well. I was hoping to find some a little longer - but as you state - it seems hard to find options that are far from the norm.
 

Online MiDi

  • Frequent Contributor
  • **
  • Posts: 629
  • Country: ua
Re: Looking for 4mm PCB mount banana plugs
« Reply #10 on: January 24, 2019, 06:20:14 am »
Ah, I hadn't noticed they are brass before. Still, decent option.

They are BeCu, response from Stäubli and they can be used for low thermal emf purpose.
Take a look at https://www.eevblog.com/forum/metrology/a-story-of-one-datron-wavetek-4708-(doktor-pytas-lab)/msg1952110/#msg1952110
« Last Edit: January 24, 2019, 06:27:50 am by MiDi »
 
The following users thanked this post: Mr. Scram

Offline nsrmagazin

  • Regular Contributor
  • *
  • !
  • Posts: 156
  • Country: ru
Re: Looking for 4mm PCB mount banana plugs
« Reply #11 on: January 24, 2019, 06:22:45 am »
I updated the links in post #2 with something else I found, as the previous link in the site was removed.
« Last Edit: January 24, 2019, 06:24:32 am by nsrmagazin »
Hi all!
If you like the post, please press "thanks".
 

Offline Mr. ScramTopic starter

  • Super Contributor
  • ***
  • Posts: 9821
  • Country: 00
  • Display aficionado
Re: Looking for 4mm PCB mount banana plugs
« Reply #12 on: January 24, 2019, 06:34:02 am »
They are BeCu, response from Stäubli and they are used for low thermal emf purpose.
Take a look at https://www.eevblog.com/forum/metrology/a-story-of-one-datron-wavetek-4708-(doktor-pytas-lab)/msg1952110/#msg1952110
You asked Stäubli what the material is? Them having been tested to satisfaction is certainly encouraging.
 

Online MiDi

  • Frequent Contributor
  • **
  • Posts: 629
  • Country: ua
Re: Looking for 4mm PCB mount banana plugs
« Reply #13 on: January 24, 2019, 06:45:28 am »
Yes, I asked Stäubli and user ap confirmed that they are ok thermal emf wise.
 

Offline Mr. ScramTopic starter

  • Super Contributor
  • ***
  • Posts: 9821
  • Country: 00
  • Display aficionado
Re: Looking for 4mm PCB mount banana plugs
« Reply #14 on: January 24, 2019, 08:16:17 am »
Yes, I asked Stäubli and user ap confirmed that they are ok thermal emf wise.
Awesome. Looks like I have an answer. Thank you!
 

Online MiDi

  • Frequent Contributor
  • **
  • Posts: 629
  • Country: ua
Re: Looking for 4mm PCB mount banana plugs
« Reply #15 on: January 24, 2019, 10:01:42 am »
Back in October I made a prototype of a 4-wire short with this kind of plugs.
The plugs are from ebay and without the solder nose, the manufacturer is unknown.
Compared to my standard 4-wire short and a copper wire, I did not recognize any significant difference in offset voltage between them.
 

Offline Mr. ScramTopic starter

  • Super Contributor
  • ***
  • Posts: 9821
  • Country: 00
  • Display aficionado
Re: Looking for 4mm PCB mount banana plugs
« Reply #16 on: January 24, 2019, 11:50:09 am »
Back in October I made a prototype of a 4-wire short with this kind of plugs.
The plugs are from ebay and without the solder nose, the manufacturer is unknown.
Compared to my standard 4-wire short and a copper wire, I did not recognize any significant difference in offset voltage between them.
Most excellent. This is a wealth of useful information. It looks like you soldered the plugs in, right?

Can you tell us more about how you tested and compared the various versions against each other? Did you track both voltage and temperature over time?
 

Online MiDi

  • Frequent Contributor
  • **
  • Posts: 629
  • Country: ua
Re: Looking for 4mm PCB mount banana plugs
« Reply #17 on: January 24, 2019, 02:34:59 pm »
It was just a quick comparison, after >5min settling for each I read the voltage.
All 3 versions had around 1min settling time to final value.
Test was done on a Keithley 196 6,5 DMM, so not a metrology grade comparison.
The conclusion for me was that my standard 4-wire plug was good enough for the intended job.

Edit:
Yes, they are soldered from both sides
« Last Edit: January 24, 2019, 03:54:22 pm by MiDi »
 
The following users thanked this post: Mr. Scram

Offline tooki

  • Super Contributor
  • ***
  • Posts: 13156
  • Country: ch
Re: Looking for 4mm PCB mount banana plugs
« Reply #18 on: January 24, 2019, 05:50:19 pm »
Probably the STÄUBLI 22.1005 or similar would come close to your desired unicorn.
They could be soldered from both pcb sides easily and should be quite robust, but possibly you can add a custom thread to screw it - if that is main concern.
They can be used as both plugs and jacks.


I had found those plugs as I've scoured the Stäubli catalogue a few times, but hadn't realised the metal part may possibly be ordered separately. That may be just the thing.

Ah, I hadn't noticed they are brass before. Still, decent option.
See also Stäubli SA400 series— screw on gold plated brass banana.

Stäubli’s main catalog sucks. Here’s a data sheet: https://www.distrelec.ch/Web/Downloads/_t/ds/SA400_eng_ger_fre_tds.pdf

The Schützinger FK 1210 is almost identical.



 
The following users thanked this post: Mr. Scram


Share me

Digg  Facebook  SlashDot  Delicious  Technorati  Twitter  Google  Yahoo
Smf