What are the most common connectors (JST) - Page 1
Forum section: electronics / beginners

author: T_guttata
author_rank: Regular Contributor
timestamp: August 15, 2021, 01:17:29 pm
content: HiI'm struggling to find some standard PCB connectors. After searching I found that JST seems to be quite a standard, the problem is just, that there are soo many different ones^^I ordered some JST SH connectors with 1mm pin spacing. I wanted something small, but now I realized they are tiny and you can hardly pull them apart. There are hundreds of different ones on digikey, many are not in stock.Therefore I just wanted to ask: What type of PCB connectors do you use and why?

author: jpanhalt
author_rank: Super Contributor
timestamp: August 15, 2021, 02:05:37 pm
content: JST is common. so are Molex, TE, Harwin, Samtec and several others. Just go to Digikey.com and search on connectors. You will see a long list, including those just mentioned.Why do you want to standardize on a particular connector?I can see maybe staying close to a reputable manufacturer, like JST, but think about the advantages of using different connectors on the same board. That reduces the likelihood of connecting something wrong. Secondly, you will need different connectors for 2 mm pitch, 0.1" , FFC cables, and so forth.

author: T_guttata
author_rank: Regular Contributor
timestamp: August 15, 2021, 02:55:50 pm
content: Because I literally spend more time on finding components than actually designing the circuit. For every type you also have to find the counterparts and the PCB footprints...So I would like to find a general purpose type of connector which I can use in the future.

author: mariush
author_rank: Super Contributor
timestamp: August 15, 2021, 03:40:59 pm
content: also look at "Cable assemblies" , where you'll fine wires with the connectors and so on... sort by quantity available and maybe that would give you a clue about what's more popular.For example seehttps://www.digikey.com/en/products/filter/rectangular-cable-assemblies/450?s=N4IgbCBcoJYCZRAWgIwAYBMIA0IAOALojiAQJ54CmicAzgMYgC%2BTQAThere's JST KR there at 2.0 mm pitch, there's micro-fit at 3.00 mm (maleorfemale) , there's3.96mm...Also look for the connectors used with lithium batteries, I think JST PH are very common at 2 mm pitch :https://www.lithium-polymer-battery.net/select-battery-connector/

author: jpanhalt
author_rank: Super Contributor
timestamp: August 15, 2021, 04:17:50 pm
content: Quote from: T_guttata on August 15, 2021, 02:55:50 pmSo, you want a particular connector series that will go from just 1-pole to some large number, nano-amps to 100A, and a similarly large voltage range. Then there is a specification for insertion cycles. Some are spec'd for about 10; others for 10,000 (e.g., USB connectors). Keying and shrouding are other factors. IDC, crimp, of solder? Through hole or SMD? No one connector or connector series can meet all those specifications. nor can just a very few. That is not a realistic expectation.We have all spent time looking for connectors. That time is considerably shortened when you know what you want. Then you go to familiar brands and find it. JST is a good brand. You seem familiar with it, so start there.

author: Renate
author_rank: Super Contributor
timestamp: August 15, 2021, 05:08:27 pm
content: JST XH 2.5mm are quite common.That's my default choice for not too many conductors, size not too critical.