13 Sep
2013
13 Sep
'13
12:17 a.m.
On Sun, 8 Sep 2013, Tony Duell wrote:
On Sat, 7 Sep 2013, Tothwolf wrote:
Right, there would be no outer two contacts to deform in a 6P4C or 6P2C
jack as there would be in a 6P6C (or in the case of a 6PxC plug plugged
into an 8P8C jack).
On the other hand, the physical fit of the 4P4C plug in a 6P4C jack would
be loose because the 4P4C plugs have a narrower width body, and moving the
cord/plug could cause the contacts to move and introduce noise. This
wouldn't likely be a major issue for a telephone application (although I
can see no reason to ever use a 4P4C for a telephone line or mounting
cord) but this could be an issue where modular connectors are being used
for digital signals such as serial connections. As common as 6P6C plugs
are, I really can't see a reason to ever use a 4P4C in a 6PxC jack.
On Fri, 6 Sep 2013, David Riley wrote:
Waht Mouse is saying (and I had to think about it for a few seconds) is
that a 6p4c or 6p2c socket (jack) do not have the 'outside' contact
springs. Therefore, if you put the narrower 4p4c plug into it, there is
nothing that doesn't line up with a contact on that plug, there are no
contact wires that get distorted (unlike the case of the 6p6c socket,
where pins 1 and 6 are strained by being forced against the 4p4c plug
body which has no grooves for them).
Other than the fact that it will eb a right pain to plug in, I ssee no
reason not to sue a 4p4c plug in a 6p4c socket. On Sep 6, 2013, at 5:44 PM, Mouse wrote:
It would be fine to plug a 6P2C, 6P4C, or 6P6C plug into a 6PxC jack,
but not a narrower 4P4C plug (commonly used for telephone handset cords
and >> No, generally one should not use a
smaller modular plug in a larger
>> modular jack. Most plugs do not have relief slots next to the
>> outermost contacts and the polycarbonate plug body will permanently
>> deform the outer contacts in the modular jack.
This would be a reason to avoid using (eg) a 4p4c plug in a 6p6c
jack. But I don't see it as a reason to avoid using, eg, a 4p4c plug
in a 6p4c or 6p2c jack. Is there something else I'm missing?
As long as one is actually using 6pNc appropriately, no. If you're
talking about plugging, say, a 4p4c plug into a 6p6c jack (which was
one of the original situations mentioned, in particular when you have
to come up with an MMJ cable in a pinch without the actual plug), then
you risk damaging pins. Plugging a 4p4c into a 6p4c jack should be
just fine.