Electronics > Projects, Designs, and Technical Stuff

MOLEX crimp headers

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daedalus:
Hi,

I use picoblade and duo-clasp molex headers in my current projects, but as a hobbyist i cant afford £200 each to get the right tools. Does anyone know of any 3rd party crimping tools that work on these series, and are more affordable?

KJ6EAD:
This hand tool works well for open barrel crimps. It's sold by most large electronics suppliers for about $35.
http://www.molex.com/molex/products/datasheet.jsp?part=active/0638111000_APPLICATION_TOOLIN.xml&channel=Products

ashley.hughes:
I also use a similar tool to the one linked above it works most of the time. I have found as my tool only has two sizes, don't crimp down to hard and if it is a cable that I am going to unplug a lot I like to apply a bit of solder where the wire is crimped to just add a bit more grip and durability.

I mainly use the Molex KK connecters though

alm:
Note that soldering wires is not allowed in many high-reliability environments because the solder is wicked into the wire, and stiffens this part. Metal fatigue is likely to occur in the area just past the solder. A good crimp is superior to soldering for wires. Not sure about bad crimp vs solder.

daedalus:
Hi everyone,

Thanks for the advice, it turns out I have managed to convince work to buy me a crimp tool for the duo-clasp pins, as its a tool I would be unlikely to ever use again.

I have also ordered a cheapie ebay job for the picoblade pins, as have found people online recommending it. Its japanese, PA 09 Crimp tool.

I looked at 63811-1000, but its smallest size seems to be 1.4mm, which is too big for both the series I am using. The problem with both types is that at 1mm they are really fiddly to crimp correctly, and all the other molex crimpers I have don't fit well enough to do the job reliably.

I have around 300-400 wires to crimp, so need something that has a high success rate or else I will be here forever. The other issue is not having extractor tools for these series, failed crimps cannot easily be removed, so will be a lot of rework if anything fails.

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