PCB tabs/terminals 2.0 x 0.8 mm. Do they exist? - Page 1
Forum section: electronics / general

author: Benta
author_rank: Super Contributor
timestamp: September 18, 2022, 08:24:05 pm
content: I've been searching high and low for PCB terminals like these;https://www.farnell.com/datasheets/65712.pdfBut with a width of 2.0...2.2 mm.Types with a slot are also OK.I find nothing, though. Do they even exist? I've rummaged through Vogt, Tyco et al, but found nothingThanks for any input/suggestion.

author: langwadt
author_rank: Super Contributor
timestamp: September 18, 2022, 08:32:27 pm
content: I think the standard size is 2.8mm wide

author: wraper
author_rank: Unknown
timestamp: September 18, 2022, 08:46:08 pm
content: Yes, 2.79/2.8mm is as small as this type gets. 0.81mm is max thickness for them but there are also 0.51mm thick which are the most common and some others. Keywords for search are faston and quick disconnect terminal.

author: Benta
author_rank: Super Contributor
timestamp: September 18, 2022, 08:57:53 pm
content: Thank You, but I'm fully aware of 6.3, 4.8 and 2.8 mm types. That was not my question.

author: Nominal Animal
author_rank: Super Contributor
timestamp: September 18, 2022, 09:32:47 pm
content: If you cannot find a source, then:How many do you need? As I understand, these are tinned brass, and brass sheets of various thicknesses from 0.20mm to 1.00mm are easily available (at hobbyist stores here at least; a 200mm by 200mm sheet of 0.8mm thickness costs about 14€ here).It seems to me that having someone machine a die and punch set could be an option. You'd punch the shapes out of the sheet, clean them, and dunk in a tin pot.If you don't want to do this kind of stuff yourself, it does open up an approach of getting someone to do it for you. I expect making the die and punch would be the main cost, as usual. I wonder if there is anyone in themachining subforumthat could help? (I would, if I had access to a metal shop. Currently, I do not.)

author: Benta
author_rank: Super Contributor
timestamp: September 18, 2022, 10:00:08 pm
content: Unfortunately, this is a very limited run, we're talking about 500...1000 pcs. so investing in a punch/die isn't in there. Laser/water cut sheet could be an option, I'm investigating that. But I doubt that it'll be viable.If the 2.0 x 0.8 mm tabs really don't exist, I see a (non-optimum) possibility using round or square 0.8...1.0 mm PCB pins instead. The type with a "ring" for settling on the PCB.But I haven't found those either. My Google-Fu sucks.Thanks.

author: Nominal Animal
author_rank: Super Contributor
timestamp: September 19, 2022, 01:59:33 am
content: A quick look at Ponoko suggests that a 7.1"×7.1" of 0.03"-0.04" (180mm × 180mm, 0.76mm-1.0mm), lasercut into a single mesh (so you'd use side cutters to trim the "pin" and a support tab), would cost about $200 in brass, $250 in copper. The kerf width on the laser is 0.01" (0.25mm), and minimum feature size 0.04" (1.0mm). You can certainly fit 1000 of them into one sheet, so that would be the price of the untinned blanks. Cutting them off and inspecting each (at least the pin) and tinning them would also take time, so it would not be cheap nor easy!Could you use connector pins (crimp terminals) instead? For example, Molex 5421 series (SPOX,3D PDF) has a 0.65mm square pin, with the lower crimp section just under 2.0mm wide when uncrimped, and are available in strips of 100 (for about ten euros per strip at Mouser). TE 170376-1 has a 0.64mm×0.7mm pin, with a narrower body. Lots of options, and since they are intended for a similar purpose (just used in a housing, instead of soldered to a board), they're well spec'd.

author: Someone
author_rank: Super Contributor
timestamp: September 19, 2022, 03:43:28 am
content: Lolhttps://www.keyelco.com/userAssets/file/M65p57.pdf

author: srb1954
author_rank: Super Contributor
timestamp: September 19, 2022, 03:45:10 am
content: Quote from: Nominal Animal on September 18, 2022, 09:32:47 pmChemical milling would be an option and possibly cheaper than laser cutting. Check with your local PCB manufacturer - they could also do the tin plating afterwards.The tooling cost is minimal since it can be produced as a standard PCB artwork and Gerber file. A slight disadvantage is that chemical milling leaves a rougher surface finish on the etched edges than laser cutting.

author: wraper
author_rank: Unknown
timestamp: September 19, 2022, 09:08:33 am
content: Why do you need exactly this size?

author: wraper
author_rank: Unknown
timestamp: September 19, 2022, 09:40:18 am
content: Apparently 2.2mm terminals do exist as China special. Though I only found female counterpart and thickness is not clearhttps://www.aliexpress.com/item/2251832431725582.html

author: wraper
author_rank: Unknown
timestamp: September 19, 2022, 09:48:14 am
content: Sumitomo makes similar terminals but they are wire to wire only and intended to be used in housing. Also tab thickness is 0.64mm.https://prd.sws.co.jp/components/series/pdf/en/hws.pdf

author: tooki
author_rank: Super Contributor
timestamp: September 19, 2022, 10:07:21 am
content: I’d take a look at some male headers for wire-to-board connectors to see if anything uses pins with those dimensions, then see if single pins are available.