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From: Lasse Langwadt <llc@fonz.dk>
Newsgroups: sci.electronics.design
Subject: Re: high curent PCB connector
Date: Wed, 26 Feb 2025 01:23:53 +0100
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On 2/23/25 21:09, john larkin wrote:
> On Sun, 23 Feb 2025 21:00:21 +0100, Lasse Langwadt <llc@fonz.dk>
> wrote:
> 
>> On 2/23/25 20:25, john larkin wrote:
>>> On Sun, 23 Feb 2025 20:03:46 +0100, Lasse Langwadt <llc@fonz.dk>
>>> wrote:
>>>
>>>> On 2/23/25 16:45, john larkin wrote:
>>>>> On Sun, 23 Feb 2025 14:02:30 +0100, Lasse Langwadt <llc@fonz.dk>
>>>>> wrote:
>>>>>
>>>>>> On 2/14/25 17:37, john larkin wrote:
>>>>>>> Does anyone have a favorite high-current PCB connector?
>>>>>>>
>>>>>>> I'd like to get 20 wires into a pluggable connector, to go on a module
>>>>>>> like this:
>>>>>>>
>>>>>>> https://highlandtechnology.com/Product/P948
>>>>>>>
>>>>>>> We need at least 7 amps per contact.
>>>>>>>
>>>>>>> That litle green Phoenix connector is cool. Wires screw into it
>>>>>>> without tooling, and it's easy to mate and unmate. But it's only 5
>>>>>>> pins.
>>>>>>>
>>>>>>> I was planning to use four of them, with two on a baby board, but that
>>>>>>> idea wasn't popular.
>>>>>>>
>>>>>>
>>>>>> https://www.mouser.ca/ProductDetail/Phoenix-Contact/1842979?qs=aYsvlkyO7qM1vWO95kklEQ%3D%3D
>>>>>
>>>>> The problem with those connectorfs, and the Weidmuller equivalents, is
>>>>> that humans aren't strong enough to un-mate them. And the spring-push
>>>>> wire clamps are flakey. And that they have no no opinions about pin
>>>>> numbering.
>>>>>
>>>>
>>>> We've used a lot of those plugable connectors, never seemed like a
>>>> problem to unmate them
>>>
>>> We used a similar part, and it was very hard to un-mate. We use the
>>> version with the cam now, but only a few of their connectors have the
>>> un-mate cam.
>>>
>>> https://www.digikey.com/en/products/detail/phoenix-contact/1808912/3439844
>>>
>>>>
>>>> doesn't have to be spring clamps,
>>>> https://www.digikey.dk/da/products/detail/phoenix-contact/1803633/260535
>>>>
>>>> if there no number you decide what to call the pins
>>>
>>> And since the connectors are unmarked, we have to explain the pin
>>> numbering to our customers, with pictures in manuals.
>>>
>>
>> if it had numbers you'd still need to explain what goes to what number,
>> or just have the names/numbers on the box next to each pin
>>
>>
> 
> Imagine if D25 or USB connectors had random pin numbers on various
> products.
> 

might as well have names instead of numbers, DB25 is used for all kinds 
of things, the numbers doesn't tell you anything