CONTACTUMConnectors / demo

DEMO — fictional range. Local brief only, NOT SENT. No personal data is collected or transmitted.

BUYING

What a quotation needs in order to be a quotation.

Most connector enquiries stall because the buyer has a part number and no joint. This is the list worth completing before the first message.

Both halves
Because a connector is specified as a pair, not as a part
The current and voltage
Per contact, and how many contacts carry current at once
The ambient temperature
Inside the enclosure, not the room
The wire
Size and insulation, because both decide the crimp and the entry
The environment
Vibration, moisture and any corrosive atmosphere
Mating cycles
Because that decides the plating thickness
The keying
Because two similar connectors on one panel will be mated wrongly
The standard
Which approval the joint has to meet, and who confirms it
Why both halves come first.

Because the joint is the product. Specifying one half and sourcing the other elsewhere produces a pair that has never been tested together, and the rating on the datasheet belongs to neither.

The most useful sentence in an enquiry.

"All contacts carry current at once, the enclosure runs at 60 degrees, and the harness is mated about fifty times." It tells the supplier which derating applies, and it is the sentence most enquiries leave out.

Why written beats verbal.

The expensive conversations in a programme are the ones about what was agreed. A brief that exists only in a meeting leaves every disputed detail open.