J30J Metal-Shell Micro-D Connectors
1.27 mm pitch · 5 to 144 contacts · twist-pin contacts
J7245 Nano-D Connectors, 0.635 mm Pitch
0.635 mm pitch · 9 to 69 contacts · metal shell
J7245 is our Nano-D connector: gold-plated micro twist-pin contacts on a 0.635 mm grid in a metal shell with threaded locking. It is built for the tightest spaces on boards and in harnesses.
- Pitch
- 0.635 mm
- Contacts
- 9 to 69
- Current rating
- 1 A
- Temperature
- −55 to +125 °C
- Mating cycles
- 200
Key features
- Gold-plated micro twist-pin contacts
- Built to GJB 7245-2011, which corresponds to MIL-DTL-32139
- J7245: 0-80 UNF locking threads; J7245A: metric M1.6 threads
- Crimp, PCB, surface-mount and straddle-mount terminations
- Marine-environment versions (J70A / J70) with nickel-plated copper-alloy shells
Specifications
| Parameter | Value | Condition |
|---|---|---|
| Current rating | 1 A | |
| Dielectric withstanding voltage | 250 V | Room temperature |
| Dielectric withstanding voltage | 100 V | Damp heat |
| Insulation resistance | ≥ 5000 MΩ | Room temperature, 100 VDC |
| Contact resistance | ≤ 21 mΩ |
| Parameter | Value | Condition |
|---|---|---|
| Contact pitch | 0.635 mm | |
| Durability | 200 mating cycles | |
| Operating temperature | −55 to +125 °C | |
| Vibration | 10–2000 Hz, 196 m/s² | |
| Shock | 980 m/s², 6 ms | |
| Wire size (crimp) | 0.035 mm² |
GJB 7245-2011 — Chinese specification for ultra-miniature rectangular connectors, corresponding to MIL-DTL-32139.
Values not listed above — for example vibration level, leak rate or other environmental tests — can be tested to your requirements, including third-party testing. Specifications are subject to change; contact us for the current datasheet.
Versions
| Series code | Version | Notes |
|---|---|---|
| J7245 / J7245A | Nano-D connectors, 0.635 mm pitch | |
| J70A / J70 | Marine-environment versions of J7245A / J7245 | Nickel-plated copper-alloy shell |
How to order
J70A-[rows][type] M 9-[contacts]-[termination][plating]-[hardware]
Example: J70A-21M9-009-161-TH — Double-row crimp plug, marine environment, nickel-plated copper-alloy shell, 9 contacts, crimp pins, gold-plated contacts, threaded insert
| Code segment | Options |
|---|---|
| Series | |
| Rows | |
| Type | |
| Class and shell | |
| Contacts | |
| Termination | |
| Contact plating | |
| Hardware |
The pin contacts are on the plug (free end, with locking screws); the socket contacts are on the receptacle (fixed end, with threaded inserts).
Mate a jackscrew (JC) end with a threaded-insert (TH) end: Nano-D connectors are too small to feel full mating, so screw coupling makes sure the connector is fully seated.
Send us the contact count, termination and thread type, and we will return the full part number with a drawing.
Contact counts and terminations
Standard contact counts
- 9
- 15
- 21
- 25
- 31
- 37
- 51
- 65
- 69
Terminations
- Crimp (pre-wired)
- Straight PCB
- Right-angle PCB
- Horizontal surface mount
- Vertical surface mount
- Straddle mount
Typical applications
- Miniature sensors and camera modules
- Portable and wearable instruments
- High-density board-to-cable links
Frequently asked questions
What is the difference between J7245 and J7245A?
Only the locking thread: J7245 uses imperial 0-80 UNF threads, J7245A uses metric M1.6 threads.
How much current can a Nano-D contact carry?
1 A per contact. For higher current, consider our Micro-D connectors (3 A per contact).
Can J7245 replace the Nano-D connector I use now?
J7245 is built to GJB 7245-2011, which corresponds to MIL-DTL-32139, with the same 0.635 mm pitch and 0-80 UNF locking threads. Send us the Nano-D part number or drawing you use today. We will propose the matching configuration and can supply samples for your own mating test.
Selection guides
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.
Related series
HJ30J High-Speed Micro-D Connectors
100 Ω differential pairs · up to 3.125 Gbps board-to-board