Author Topic: Low Thermal E.M.F. Binding Post TBP3 (Read 12859 times)

branadic · « **on:** December 29, 2022, 09:25:26 pm »

Hi everyone,

I intentionally wanted to post this as a xmas surprise, but it took me a little longer to complete and approve the datasheet.
After my failed attempt to get PK4T binding post re-manufactured by MC Stäubli, I'm now happy to announce that there are new low thermal e.m.f. binding posts available.
I'm organizing the EU group order, so only one person has to deal with customs. Please find attached the datasheet for the posts. You can choose between bare copper or Ni/Au plating, between black and gray body and between different colors for the insert.

TBP3-A-B-XX

A = 0, CuTe
A = 1, CuTe with Ni/Au plating
B = 0, Black Insulation
B = 1, Gray Insulation
XX = 00, Black insert
XX = 01, White insert
XX = 02, Red insert
XX = 03, Blue insert
XX = 04, Green insert

The prices are as followed:

TBP3-0-x-xx	$18,50
TBP3-1-x-xx	$20,00

Please add to that customs, VAT and shipping costs.
You want to get your hands on posts? Then send me a PM with a valid name, nickname, mail address and which posts you want in what quantity. Here an example:

name: Dave Example
nickname: DaveExample
mail address: dave@example.com

2x TBP3-0-0-02 (pure copper, black body, red insert)
2x TBP3-0-1-00 (pure copper, grey body, black insert)
2x TBP3-1-0-02 (gold plated, black body, red insert)
2x TBP3-1-1-00 (gold plated, grey body, black insert)

-branadic-

sahko123 · « **Reply #1 on:** December 30, 2022, 12:00:24 am »

finally the binding posts of my ~~wet~~ dreams.

do you have a link to the supplier?

laichh · « **Reply #2 on:** December 30, 2022, 03:02:39 am »

The pitch between adjacent binding post must be as little as 0.75" (19.05 mm) in order to "comply" with the Multimeter/Calibrator tradition.

Villain · « **Reply #3 on:** December 30, 2022, 04:31:02 am »

Hi branadic,

Thanks a lot for organizing. PM sent.

branadic · « **Reply #4 on:** December 30, 2022, 09:27:23 am »

The binding posts were designed by an eevblog forum member located in Asia and are manufactured there too, so there is no supplier link.
I'm just organizing the group order, will import the posts to EU with VAT and customs and will send them from here to everyone located in EU.

A pitch of 19.05 mm is no problem, I received this neat little demoboard showing a pitch of 19.05 mm with the backlight turned on.

-branadic-

jaromir · « **Reply #5 on:** December 30, 2022, 01:18:16 pm »

Hello, I'm considering joining this group buy. I have a few questions:
1, when is deadline for joining?
2, is this one time deal, or is there optiom for future orders?

Echo88 · « **Reply #6 on:** December 30, 2022, 02:36:34 pm »

Backlit posts, were joining fancy Fluke 5730A territory.

Thanks for organizing the groupbuy.
Now, how many should i get...

branadic · « **Reply #7 on:** December 30, 2022, 02:58:18 pm »

1. Let's say deadline is the end of January 2023.
2. There is the option to re-order them in the future, but assume a one buy order organized by me for the moment. If everything moves straight and smooth I'm tempted to organize future orders too, but don't quote me on that for now.

-branadic-

mendip_discovery · « **Reply #8 on:** December 31, 2022, 10:15:56 pm »

Are you ok with posting to evil Brits in the UK?

branadic · « **Reply #9 on:** January 01, 2023, 10:05:45 am »

In principle yes, but take additional customs + VAT into account. If more members from UK are joining it is possible to send the UK order to a single person who organizes the shipping within UK.

-branadic-

sahko123 · « **Reply #10 on:** January 07, 2023, 07:45:46 pm »

Are there expected to be price breaks once all the orders are in?

branadic · « **Reply #11 on:** January 08, 2023, 11:59:57 am »

Don't expect dozens of forum members ordering huge quantities in total. For the moment I only received four messages from people ordering one or the other post. However, if the quantities vastely increase and I get a discount I will include it to the final costs, sure.

-branadic-

Ole · « **Reply #12 on:** January 09, 2023, 05:57:43 am »

Is there any information on the current rating of the binding posts?
I couldn´t seem to find it in the datasheet.

Cheers
Ole

branadic · « **Reply #13 on:** January 10, 2023, 08:32:59 am »

Wasn't yet measured, hence why it is not specified, but similar performance like Fluke or Low Thermal 2758 is to be expected, which have no specification either

-branadic-

laichh · « **Reply #14 on:** January 11, 2023, 02:04:04 am »

IET Labs BP-1000 is rated for 30 A.

https://www.ietlabs.com/pdf/Datasheets/BP-1000.pdf

branadic · « **Reply #15 on:** January 11, 2023, 05:29:31 pm »

Similar values can be found for a few other binding posts such as Stäubli PK4-T(S). Not sure if that was ever measured or if that is a real limit, it's at least what is guaranteed.

-branadic-

MegaVolt · « **Reply #16 on:** January 12, 2023, 01:52:37 pm »

Quote from: branadic on December 30, 2022, 09:27:23 am

The binding posts were designed by an eevblog forum member located in Asia and are manufactured there too, so there is no supplier link.
I'm just organizing the group order, will import the posts to EU with VAT and customs and will send them from here to everyone located in EU.

A pitch of 19.05 mm is no problem, I received this neat little demoboard showing a pitch of 19.05 mm with the backlight turned on.

-branadic-

How is the backlight set up? Do you have detailed photos?

mendip_discovery · « **Reply #17 on:** January 12, 2023, 06:24:52 pm »

Quote from: MegaVolt on January 12, 2023, 01:52:37 pm

How is the backlight set up? Do you have detailed photos?

There are a few pics in the pdf uploaded including some drawings. Branadic had a little test thing so he might get some nicer pics of them.

branadic · « **Reply #18 on:** January 12, 2023, 07:01:04 pm »

Attached is an image of how it's realized compared to the drawing in the datasheet.

-branadic-

bastl_r · « **Reply #19 on:** January 12, 2023, 07:43:01 pm »

Hi
What kind of solder is recomned for the bindingposts?
Or is it better to connect them with copper spade lugs?

Regards bastl_r

branadic · « **Reply #20 on:** January 16, 2023, 09:23:47 pm »

You can either use a solder of your choice or o-ring lugs.

-branadic-

JK21 · « **Reply #21 on:** January 21, 2023, 03:14:24 pm »

The first binding posts have arrived.

Below the screw connection, I filed something down at the intended soldering point. It really does appear to be the material described in the spec sheet and has a copper shimmer.
The plastic also makes a good and stable, not so brittle impression.
Anyway, they look good!

I also ordered some cable lugs. With these, too, there is a discrepancy between the opening width at the front and the wire diameter required for our measuring cables. Please consider the strange numbering in the AWG system - smaller numbers mean larger diameters! I ordered T3.5-6 14-12 and should have taken 22-16

When I build the first cable I'll have to see how it works. The only thing left here is soldering, not crimping.

Sprock · « **Reply #22 on:** January 21, 2023, 05:17:18 pm »

Have the LowThermal E.M.F. Binding Post TBP 3 also received in the meantime.
To my surprise, they turned out very well and were packaged well.
A big thank you to Branadic for offering these parts to the community.

regards Sprock

DavidKo · « **Reply #23 on:** January 25, 2023, 11:27:34 am »

Mine had also come, but I need to check them in detail. I have noticed that there are accessories later when reading the datasheet (after the order

). If everything will go like I want I will make some comparison to Pomona 3770.

branadic There is also the possibility to order the accessories mentioned in datasheet?

branadic · « **Reply #24 on:** January 25, 2023, 05:04:30 pm »

The ordering numbers for the accessories are given in the datasheet and can be ordered, yes.

-branadic-


EEVblog Main Site	EEVblog on Youtube	EEVblog on Twitter	EEVblog on Facebook	EEVblog on Odysee

Author Topic: Low Thermal E.M.F. Binding Post TBP3 (Read 12859 times)

Share me