Cant find jumpers for more than 2 pins... - Page 1
Forum section: electronics / projects

author: Pete66
author_rank: Regular Contributor
timestamp: April 02, 2019, 05:34:38 am
content: HelloYou've all seen these 2 pin jumpers.I have a CPLD development board that I designed and I need some 3 pin jumpers.Anyone know if they make this type of jumper in a 3 pin design?Thanks

author: Psi
author_rank: Super Contributor
timestamp: April 02, 2019, 06:23:38 am
content: Even if they do, one of them is likely going to cost you more than 2x 2pin jumpers and 2x 2pin headers combined.They will be rare and so will be expensive.I've never seen a 3 in a row, but i have seen 2x2 jumper blocks

author: digsys
author_rank: Unknown
timestamp: April 02, 2019, 06:48:32 am
content: I've used / have 5.08mm jumpers (for HV stuff), and when needed, jammed a extra pin down the center. A bit ugly but works :-)I did find these -https://www.conrad.com/p/shorting-jumper-contact-spacing-254-mm-508-mm-pins-per-row2-tru-components-tc-05305-101-10-00-content-1-pcs-1560877Look for 5.08mm ones

author: Pete66
author_rank: Regular Contributor
timestamp: April 02, 2019, 06:53:35 am
content: There are 5 pins. I need to jump 3 in a row.pins 1,2 and 3 or pins 3,4, and 5.I cant believe nobody makes these. Ill have to use a dupont connector and put wires in it to connect all 3. Its gonna look ugly.

author: screwbreaker
author_rank: Regular Contributor
timestamp: April 02, 2019, 07:37:16 am
content: Quote from: Pete66 on April 02, 2019, 06:53:35 amFrom this seems that pins 1,2 and 4,5 are always connected together. You just need to jumper pin 2,3 or 3,4.What I'm missing?

author: TERRA Operative
author_rank: Super Contributor
timestamp: April 02, 2019, 07:56:53 am
content: If pins 1,2,3 are connected with the jumper, pins 4, 5 aren't connected together and vice-versa.

author: bson
author_rank: Unknown
timestamp: April 03, 2019, 01:13:15 am
content: Quote from: Pete66 on April 02, 2019, 06:53:35 amLike this?

author: Pete66
author_rank: Regular Contributor
timestamp: April 03, 2019, 05:00:58 am
content: No actually I just need a jumper that can jump 3 pins in a row.I have redesigned the board to use multiple 2 pin jumpers but I have a few boards printed with the original design so I was just trying to find a 3 pin jumper and I don't think they even exist.I have made one for now using a dupont connector and some wires but it just looks bad.

author: digsys
author_rank: Unknown
timestamp: April 03, 2019, 05:18:31 am
content: The less messiest approach I've used, and you can make as many way as you like - is a female SIL header. Just snap it off to the number of pins you want,then solder a neat bridge along the exposed pins. You can even clean it up a bit. Much more flexible and friendlier !

author: reboots
author_rank: Regular Contributor
timestamp: April 03, 2019, 04:28:22 pm
content: Adam Tech P/N MSE-G appears to be what you want. However, I can't find a stocking distributor. I recommend contacting Digi-Key for their lead-time.https://www.digikey.com/product-detail/en/adam-tech/MSE-G/2057-MSE-G-ND/9830574You could also try contacting the manufacturer directly, although they might not be interested in orders below a standard pack of 1,000 pcs.http://www.adam-tech.com/result.php?keyword=+%09MSE-G

author: Neomys Sapiens
author_rank: Super Contributor
timestamp: April 03, 2019, 06:58:23 pm
content: Quote from: reboots on April 03, 2019, 04:28:22 pmInteresting part. I'll try to get some just in case.

author: OM222O
author_rank: Frequent Contributor
timestamp: April 04, 2019, 12:28:32 am
content: pro tip:1)buy a strip of through hole female headers2) cut as many pins as you want (3 in your case, but you can do as many as you want)3) bridge the gap between the pins with some wire and solder (if you are able to bend the pins on top of each other without breaking them, you don't even need extra wire)I have used this simple trick and it has worked fine for many projectscheap and not too difficult to make in one off quantities. if you need this kind of thing for your final project, just get a 3P2T switch.

author: DaJMasta
author_rank: Super Contributor
timestamp: April 04, 2019, 12:51:10 am
content: Quote from: Pete66 on April 02, 2019, 06:53:35 amIf you get a PCB mount female socket with 3 pins, joining them together is less work.

author: T3sl4co1l
author_rank: Super Contributor
timestamp: April 04, 2019, 01:04:45 am
content: Quote from: Psi on April 02, 2019, 06:23:38 am-- Mind, the alternative right now, appears to be not more headers, but an entire board spin as well!This is, however, a valuable lesson, to design based on parts available, not what you guess may be available.If in doubt... go shopping!Shopping? Yes, it's a pain. And yes, the pros spend literal hours doing it, too. (Heck, you can make a career out of it; that's a crude description of half of what a VAVE service does!)DaJMasta's tip about shorted female headers is pretty good. They will never be out of stock (in some form or another), and the modification is easily made.Tim