J7245 Nano-D Connectors, 0.635 mm Pitch
0.635 mm pitch · 9 to 69 contacts · metal shell
Nano-D Connectors
0.635 mm pitch ultra-miniature connectors with twist-pin contacts, for the tightest spaces on boards and in harnesses.
Nano-D connectors halve the contact spacing of Micro-D to 0.635 mm, so a 69-contact connector fits where a much smaller Micro-D would. They use gold-plated micro twist pins and a metal shell with threaded locking hardware.
Our J7245 series is built to GJB 7245-2011, which corresponds to MIL-DTL-32139. It is available with metric (M1.6) or imperial (0-80 UNF) locking threads and with crimp, PCB and surface-mount terminations.
Compare series
| Series | Pitch | Contacts | Current rating | Temperature | Mating cycles |
|---|---|---|---|---|---|
| J7245 / J7245A | 0.635 mm | 9 to 69 | 1 A | −55 to +125 °C | 200 |
How to choose
Replacing an existing Nano-D
Send us the MIL-DTL-32139 or manufacturer part number you use today. We match it to a J7245 configuration and can supply samples for your mating test.
Contact count
Nine standard sizes: 9, 15, 21, 25, 31, 37, 51, 65 and 69 contacts, all in two rows.
Locking thread
J7245 uses 0-80 UNF threads; J7245A uses metric M1.6 threads.
Termination
Crimp to wire, straight or right-angle PCB, horizontal or vertical surface mount, or straddle mount.
Wire size
Crimp versions are terminated to 0.035 mm² wire.
Options beyond the standard connector
Pre-wired Nano-D assemblies
Terminated to your cable, length and pin-out.
Micro-D (1.27 mm pitch)
Higher current and larger wire where space allows.
Frequently asked questions
What is the difference between Nano-D and Micro-D?
Nano-D uses 0.635 mm contact spacing, half of Micro-D's 1.27 mm. It saves space and weight but carries less current per contact (1 A versus 3 A for our Micro-D).
Which locking thread should I choose?
Choose J7245 (0-80 UNF) when the mating half or panel uses imperial hardware, and J7245A (M1.6) for metric designs.
Can you supply Nano-D connectors pre-wired?
Yes. Send the pin-out, wire type and length with your inquiry.
From sample to production
Send your requirement
Part number, drawing, pin-out or a short description of your application.
Configuration and quote
Our engineers match the configuration and reply with a drawing and quotation.
Samples
Samples are made to your order. Third-party testing to your specification is available on request.
Your approval
You test the samples in your own equipment and approve them.
Series production
Production follows the approved sample configuration.
Need a quote or a drawing?
Send your part number, pin-out or drawing. An engineer will reply by email.