I have a question about the JST XH footprints. In the library and in footprint search engines I found several footprints for the standard “JST XH” plugs. They have the size 2.50mm in their name, eg Connector_JST:JST_XH_B3B-XH-A_1x03_P2.50mm_Vertical. The connectors I bought are called eg. JST 2.54mm XH-3A.
Question: is the 2.5mm compatible, although it is 2.54mm?
I hope, this question is not too stupid. I build some PCBs already, with standard 2.54 thru hole PINs (Connector_PinSocket_2.54mm:PinSocket_1x03_P2.54mm_Vertical), which worked. But I wanted to use the right footprint for the JST XH for a new PCB now.
I don’t believe there is such a thing as as 2.54 pitch jst-xh connector, they are all 2.50mm. Some vendors include explanations like this “The manufacturer has provided specifications for these connectors with a pin pitch of 2.54mm. Official JST XH series connectors use a 2.5mm pitch however for 4 or fewer pins either pitch will work interchangeably.” https://core-electronics.com.au/jst-connector-kit-2-54mm.html. In my experience you should only start having problems once there are more than about 6 pins in the connector.
There are however, NON JST connectors that look very much like the JST but have a 2.54 mm pitch
Are you sure, did you measure? Don’t trust the description of cheap clones. I have a box bought online, unknown manufacturer, labeled “460 Pcs JST-XH Connector Kit”, where it states on the box “2.54mm Pitch”. I was suspicious, so I’ve measured and they are in fact 2.5 mm. I don’t know why they do this.
Thank you very much for your explanation. Maybe it is really just because 2.54 sells better due to the breadboards. I will try it and if it is not working the easy solution would be to buy other plugs.
Just know these no name connectors are not the same quality as any JST connector. If I had to make something that would live in a less than inside environment I would purchase the Real JST connectors.
