General > General Technical Chat
Pin header crimps that match SN-28B ?
ElektroQuark:
FWIW here it is how I use my cheap SN-28B with cheap Chinese terminals: CLICK!
It's a very short blog entry with clear images. Short text in Spanish but easily translatable.
Hope this helps.
tooki:
--- Quote from: ElektroQuark on July 25, 2021, 06:09:05 am ---FWIW here it is how I use my cheap SN-28B with cheap Chinese terminals: CLICK!
--- End quote ---
Those aren’t DuPont terminals, they’re KF2510 (Molex KK 254 clone), which are MUCH more flexible about the crimp tool used. (Though a -28B is still nowhere near ideal for them, the jaws are too thick.)
--- Quote from: ElektroQuark on July 25, 2021, 06:09:05 am ---It's a very short blog entry with clear images.
--- End quote ---
You don’t show any image of the top of the crimped terminal.
741:
Nice crisp images!
The crimps I have are "not great", shown here for comparison.
jpanhalt:
The one in the foreground is too fuzzy to tell. The triangle style leaves for insulation support are most difficult to get right, in my experience. For them, I start the proper alignment and bend over manually before putting in the crimper; otherwise, they tend to go askew.
jpanhalt:
I just pulled apart a couple of connector on my bench. Probably made about 5 years ago. All crimps were done with the green handled crimper I showed earlier.
1) I categorize the "Berg" type, which is what you show and is sometimes called DuPont type, as being "indent" or "barb" retention. The Berg type is in my mind a female "pin" with a cantilevered contact. The company is now owned by Amphenol, I think. The indent retention is a cantilever on the housing that pops into the crimped side. The barb type has a barb on the non-crimped side of contact that pops into a hole on the housing. I prefer the indent type. They are easier to remove without any damage to the contact.
2) The first photo shows a barb type retention, non-Berg contact at top. The barb was pressed into the contact to get it released. The bottom contact is a Berg type with indent retention. It also has the pointed leaves as discussed earlier. Notice, I clipped the very tips of the leaves off to facilitate crimping and insertion into the housing.
3) The second photo is a close up of the Berg-type connector.
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