Connector contact size(Urgent)

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Connector contact size(Urgent)

Postby Jeju » 14 Oct 2011, 04:24

What is the difference between 22 and 22D(or 22M) for connector contact size?

What does suffix D and M mean?
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Re: Connector contact size(Urgent)

Postby sjap » 14 Oct 2011, 09:13

http://www.pinsandsockets.nl/

maybe you find it here?
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Re: Connector contact size(Urgent)

Postby Jeju » 14 Oct 2011, 17:58

Dear Sjap,

Thanks for you reply.
Unfortunately, I could not find anything related to my question at the web site.

I need your help.

Regards,
Jeju
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Re: Connector contact size(Urgent)

Postby maro12 » 14 Oct 2011, 21:06

Suffix usually tells about contact finish (e.g. Gold / Localized Gold / Rhodium - standard Boeing pins) - identification used in p/n depends on supplier. Contact size is described usually by: engaging end size + crimping barrel size (e.g. 22 22). Therefore no difference in contact size. What kind of connector is it - 22 size contact on 737 - ARINC EE rack tray connector? Have You got contact full p/n?

Regards.
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Re: Connector contact size(Urgent)

Postby Jeju » 15 Oct 2011, 02:10

Dear maro12,

There are some contacts which have suffix D and M.

For example, mating end size of M39029/58-360 is 22 but wire barel size is 22D.



Regards,
Jeju
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Re: Connector contact size(Urgent)

Postby maro12 » 15 Oct 2011, 11:23

Got You, sorry I was writing from top of my head.

22D - barrel diameter = 0.0345 +/-0.01 (inch) Tested for wire gauge up to 22 (5 A), 24 (3 A), 26 (2 A), 28 (1.5 A)

22M - barrel diameter = 0.0280 +/-0.01 (inch) Tested for wire gauge up to 24 (3 A), 26 (2 A), 28 (1.5 A)

22 - barrel diameter = 0.0365 +/-0.01 (inch) Tested for wire gauge up to 22 (5 A), 24 (3 A), 26 (2 A)

So I wouldn't use 22M in the circuit which will be rated for more than 3A, if rating is below it is ok to use 22M contact with 22 gauge wire if it will psyhically fit. Dependent on conductor type - single core would fit, stranded do not think so.

For more details see: http://www.amphenol.co.uk/pdf/amphenol% ... %201-8.pdf

Hope this helps,
Regards.
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Re: Connector contact size(Urgent)

Postby Jeju » 17 Oct 2011, 15:02

Dear mora12,

It is very informative for me. Thanks

Regards,
Jeju
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Re: Connector contact size(Urgent)

Postby uberthin » 07 Feb 2012, 21:15

Alternate forum confirms everything said here: http://www.pprune.org/engineers-technic ... -size.html

The link to the Amphenol pdf file referenced in this forum is down, but google has a cached copy here: https://docs.google.com/viewer?a=v&q=ca ... dEu_FUq-Ew

Standard Density D-Subminiature connectors use size 20 contacts, the "High Density" versions use 22D contacts. See MIL-DTL-24308 (a US military specification) available here: https://assist.daps.dla.mil/quicksearch/ See section 1.3.3 The commercial standards (IEC 60807-3 / DIN 41652) probably say the same thing, but since they cost money I don't have access to them.

I found this site through google. Thanks for posting useful information.
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