Connectors and crimpers

john61ct

Adventurer
I'm a big fan of the Tyco CPC connectors. I've got them in a few places on the truck, ham radio equipment, etc. They are designed to be mechanically robust, for repeated mate cycles and staying sealed. I'd think the 1/4 turn bayonet style Miniature CPC would be perfect for a situation like this.

https://www.te.com/usa-en/products/connectors/intersection/circular-plastic-connectors.html
I couldn't find a crimper for their pins under $200

While knockoffs for the Deutsch DT pins are easily found for ~$40

If you could link to a decent substitute, I'd like to give them a try, the DTs don't go past 12-way at higher amps.
 

DaveInDenver

Middle Income Semi-Redneck
I couldn't find a crimper for their pins under $200
Molex 63811-1000 crimper work on the terminals, they are standard Type III+ crimps. So basically any tool you currently use for AMP, TE, Molex or similar will work acceptably for the non MIL-SPEC CPCs. Their approved tool (The TE Pro-Crimper III) is of course expensive but as you know what you need to pass an industry acceptance isn't quite the same as what you can make work personally. That's no different for the DT-series, Metri-Pack or really any of the terminals any of us recommend.
 

john61ct

Adventurer
Sounds good. Still true at the contactor sizes required for say 15A plus?

I'll keep using my Deutsch for the small stuff, very happy with DTP too but have use cases for both higher currents and more pins.

I do mil-spec pull tests btw.
 

Photobug

Well-known member
I use non-watertight Anderson SB50s for everything. Easy, works. Water is not an issue for low-voltage under most circumstances for things you are deploying when required.

A.


If you use SB50s do you need an equivalent wire? Which wire goes with an SB50?
 

DaveInDenver

Middle Income Semi-Redneck
Sounds good. Still true at the contactor sizes required for say 15A plus?

I'll keep using my Deutsch for the small stuff, very happy with DTP too but have use cases for both higher currents and more pins.

I do mil-spec pull tests btw.
If you do MIL-SPEC then you really can't do CPC. They would have to be proper MIL-C-5015 or MIL-DTL-38999 and the correct crimpers to pass dimension, visual and pull test.

If all you're doing is a 50 mm/min rate and AWG-dependent force check and don't care that's not an absolutely perfect looking or sized then you should be fine. Any commercial grade crimper should meet it functionally with standard grade CPC.

ETA: Just thought of this, if you're using Deutsch DT for military (I wasn't aware they were available in MIL-SPEC to be honest) then you could just get dies for the tool to match CPC. They're both TE lines so if the dies themselves aren't compatible then surely the tool frames must be.
 
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Photobug

Well-known member
I'm a big fan of the Tyco CPC connectors. I've got them in a few places on the truck, ham radio equipment, etc. They are designed to be mechanically robust, for repeated mate cycles and staying sealed. I'd think the 1/4 turn bayonet style Miniature CPC would be perfect for a situation like this.

https://www.te.com/usa-en/products/connectors/intersection/circular-plastic-connectors.html

These seem more oriented to signal than power. Using your link I was looking for something compatible in a 13A rating and it did not exist.
 

DaveInDenver

Middle Income Semi-Redneck
These seem more oriented to signal than power. Using your link I was looking for something compatible in a 13A rating and it did not exist.
The Series 1, size 16 contacts are rated 13 amps. The Series 2, size 20 contacts are rated 7.5 amps. Series 3 power connector terminals are rated 25 amps and the Series 5 Powerband are rated 45 amps.

I would suggest Series 5, would look similar to this. The largest pin and socket accept 8 AWG wire.

525164
 
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Photobug

Well-known member
Sorry I wasn't more clear, I don't go that far.

Just meant I regularly confirm my connection integrity by doing MIL-T-7928G type tensile strength pull tests.

ABYC E-11 isn't worth a hill of beans, UL-486A marginal.

I got to ask: How many of you are engineers? If not does your work require to understand the difference between
MIL-T-7928G, ABYC E-11 and UL-486A?
 

john61ct

Adventurer
I am more OCD than most, but just knowing the best-practice standards doesn't have to mean always following them.

When customers want me to cut corners, knowing the logic behind the rules lets me do so without compromising (much) on safety and reliability.

And also let's me know when that's a customer worth firing, do not want my name associated with shoddy work.

And it really isn't rocket science anyway. . .

Plenty of EE types not specialising in DC electrickery get screwed up focussing on the theoretical, not realizing how clueless they are about the nuts & bolts.
 

DaveInDenver

Middle Income Semi-Redneck
I got to ask: How many of you are engineers? If not does your work require to understand the difference between
MIL-T-7928G, ABYC E-11 and UL-486A?
Spent the first 15 years out of engineering school designing analog and mixed signal printed circuit assemblies for satellites, worked and tested to MIL and NASA standards. Since leaving Denver a few years ago worked contracts that required UL consumer, SAE heavy truck, IEC/NEC, API design codes. I've never had to work to ABYC, just heard mention of it related to vehicles and RVs, mostly here.
 

Photobug

Well-known member
I am more OCD than most, but just knowing the best-practice standards doesn't have to mean always following them.

That is key, understanding the standards so you know how to meet your own needs, while not building to Nasa standards.

I am glad someone here is willing to read up and know these standards, so I don't have to.
 

shade

Well-known member

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