Electronics > Beginners
Connectors and crimping tools. I just want to be "more standard"
Moriambar:
Hey.
I know this message will upset some because "there's no such things as best for all" and such, but please try to understand what I am asking.
During my long ongoing beginner stage, I frequently found myself in need of connecting things. Apart from ribbon cables, I usually use some thin stranded cable, which I crimp with the "proper" connectors at the end, as I think is standard.
Now, this has started for me way back when I was even more a beginner, so I basically used these kits:
- JST-XH (bought on amazon https://goo.gl/zmdCV6) for pcb/soldered connections
- Dupont (bought on amazon https://goo.gl/VZuSWT) for breadboard and other things
while to crimp I use
- PA-09 (https://goo.gl/K69SaB) for the JST
- the Pa-09 and another beast (https://goo.gl/oDytBq) for the dupont
Since I'm running out of stack of the jst-xh 2 pin connectors, I thought of asking here whether those are the "best" choice I can have and also how can I find them (I do not think they're particularly used, so it was difficult to find the 2pin one at an affordable price in nice quantites). Please bear in mind that I do rarely need more than 100mA and a 1A capable cable/connector is more than enough.
So do you think I have better alternatives (which perhaps are more readily found in other places than amazon) than the jst-xh (which was kinda painful to design pcb around too because many times the component was wrong)? If so what do you suggest? Do I need a different crimping tool?
About crimping tools: crimping the Dupont connectors is really really painful with the tools I have, do you have any recommendations (that won't make me go broke?)
If you read all of this, well thanks a lot, I appreciate that.
I hope this all makes sense.
Cheers
alex-sh:
--- Quote from: Moriambar on February 14, 2019, 09:16:40 am ---Hey.
I know this message will upset some because "there's no such things as best for all" and such, but please try to understand what I am asking.
During my long ongoing beginner stage, I frequently found myself in need of connecting things. Apart from ribbon cables, I usually use some thin stranded cable, which I crimp with the "proper" connectors at the end, as I think is standard.
Now, this has started for me way back when I was even more a beginner, so I basically used these kits:
- JST-XH (bought on amazon https://goo.gl/zmdCV6) for pcb/soldered connections
- Dupont (bought on amazon https://goo.gl/VZuSWT) for breadboard and other things
while to crimp I use
- PA-09 (https://goo.gl/K69SaB) for the JST
- the Pa-09 and another beast (https://goo.gl/oDytBq) for the dupont
Since I'm running out of stack of the jst-xh 2 pin connectors, I thought of asking here whether those are the "best" choice I can have and also how can I find them (I do not think they're particularly used, so it was difficult to find the 2pin one at an affordable price in nice quantites). Please bear in mind that I do rarely need more than 100mA and a 1A capable cable/connector is more than enough.
So do you think I have better alternatives (which perhaps are more readily found in other places than amazon) than the jst-xh (which was kinda painful to design pcb around too because many times the component was wrong)? If so what do you suggest? Do I need a different crimping tool?
About crimping tools: crimping the Dupont connectors is really really painful with the tools I have, do you have any recommendations (that won't make me go broke?)
If you read all of this, well thanks a lot, I appreciate that.
I hope this all makes sense.
Cheers
--- End quote ---
The answer is it depends.
You did not give any details - what PCBs, space on your PCB, etc.
Are you happy with 2.54mm JST?
I would start from the following. Find out how much space you have and what it is you need, i.e. how many wires you have to connect.
Your search should start here:
https://www.digikey.co.uk/products/en/connectors-interconnects/rectangular-connectors-headers-male-pins/314?k=JST
For me personally, it does not matter - what to crimp or how to crimp it. The question is what it is you want to achieve and how?
Very often there are space or design limitations. And you do not start building a car by choosing wheels first. 8)
Moriambar:
--- Quote from: alex-sh on February 14, 2019, 12:04:50 pm ---
The answer is it depends.
You did not give any details - what PCBs, space on your PCB, etc.
Are you happy with 2.54mm JST?
I would start from the following. Find out how much space you have and what it is you need, i.e. how many wires you have to connect.
Your search should start here:
https://www.digikey.co.uk/products/en/connectors-interconnects/rectangular-connectors-headers-male-pins/314?k=JST
For me personally, it does not matter - what to crimp or how to crimp it. The question is what it is you want to achieve and how?
Very often there are space or design limitations. And you do not start building a car by choosing wheels first. 8)
--- End quote ---
Hi. I'm kinda happy with the JST 2.54 mm; I just wanted to know what the options are and how to choose. I'm thinking about "general purpose" (or jellybean if you wish: is there a 2n7000 or 2n3904 of connectors?) ones with the loose requirement that it can carry 1A.
I have no space problems or anything like that.
Also crimping tools, in my experience, are a pain: perhaps I've got the wrong ones.
As per your "what do I want to achieve" -> I want to be able to connect my boards! Mostly I use up to 4 wires (if more I use a ribbon) how? In an efficient way (meaning affordable, with standard connectors easy to find and crimp).
But thank you for your link and answer.
Cheers
mariush:
You could look at what's stocked in the biggest quantities at various distributors.
For example, for board headers,
JST PH ,2mm pitch , 430k in stock : https://www.digikey.com/product-detail/en/jst-sales-america-inc/B2B-PH-K-S-LF-SN/455-1704-ND/926611
JST PA , 2mm pitch , 340k in stock : https://www.digikey.com/product-detail/en/jst-sales-america-inc/B02B-PASK-1-LF-SN/455-1832-ND/926738
JST XH 2.5mm pitch is also in 300k+ quantities : https://www.digikey.com/product-detail/en/jst-sales-america-inc/B2B-XH-A-LF-SN/455-2247-ND/1651045
You also have Molex micro-fit with 3mm pitch , te micro mate-n-lok etc
graeme.c.payne:
First, I have no opinion on the actual connectors - that is a design decision for you.
For the crimping tool, though, I do have a suggestion based on experience in military and the aerospace industry.
Always use a ratcheting type crimping tool. This will always give you a more REPEATABLE connection, and a connection that is STRONGER mechanically.
I know ratcheting crimping tools can be painful to use. My solution for that has always been to place the fixed handle on the work surface and press down on the moving handle, using body weight to help as needed.
In the places I have worked, the use of ratcheting crimping tools is required. Non-ratcheting ones were not allowed in work areas.
In some places the tools have also required periodic examination and verification, to be sure that the crimp meets mechanical strength requirements. But that is not needed at the hobbyist level. I use a moderate pull on the wire to be sure it is secure.
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