AIRBORN RM372-059-321-5900
- 59-position 3-row rectangular connector configuration
- Gold-plated beryllium copper contacts for reliable connectivity
- 3A current rating per contact with 750V voltage rating
- MIL-DTL-55302 qualified for aerospace applications
- Solder cup termination with straight orientation
In aerospace and defense systems, reliable electrical connections are critical for ensuring uninterrupted operation in extreme environments. The AIRBORN RM372-059-321-5900 is a MIL-SPEC rectangular connector designed to meet the rigorous demands of avionics systems, satellite platforms, and space applications. This connector features gold-plated beryllium copper contacts that provide excellent corrosion resistance and low contact resistance, ensuring reliable signal transmission even after thousands of mating cycles. Its robust PPS housing material offers exceptional mechanical strength and resistance to harsh chemicals, making it suitable for use in both on-board and ground support aerospace systems.
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The AirBorn RM372-059-321-5900 is a MIL-DTL-55302 qualified rugged rectangular plug (male, right angle) from the R Series — 59 contacts, 3 rows, 0.075″ (1.91mm) pitch, plated through-hole right-angle termination, PPS housing, −65°C to +125°C. It is the right-angle plug counterpart to the straight receptacle RM322-059-221-2900, forming the standard mating pair for PCB-to-PCB perpendicular board interfaces. The RM372 right-angle orientation exits the PCB horizontally, reducing the vertical height above the board versus a straight plug and enabling card-cage and backplane designs where axial clearance is the constraining dimension.
RM372 vs. RM322: Plug/Receptacle Mating Pair
| Parameter | RM322-059-221-2900 | RM372-059-321-5900 |
|---|---|---|
| Function | Receptacle (female) | Plug (male) |
| Orientation | Straight (vertical) | Right Angle (horizontal) |
| Contacts | 59 | 59 |
| Termination | PTH socket | PTH pin, right angle |
| Housing | PPS | PPS |
| MIL Spec | MIL-DTL-55302 | MIL-DTL-55302 |
| Current Rating | 3A/contact | 3A/contact |
| Temp Range | −65°C to +125°C | −65°C to +125°C |
| Typical Mount | Motherboard/backplane | Daughtercard |
The RM372-059-321-5900 is the standard daughtercard-side connector in VMEbus, CompactPCI, and custom avionics backplane architectures where the daughtercard plugs into a motherboard receptacle at a 90° angle. The right-angle PTH termination solders flat against the PCB edge, enabling card insertion from the front panel of a card cage without requiring vertical clearance above the connector body. With proven flight heritage on Space Shuttle and Mars Rover programs and approval to MIL-DTL-55302, it delivers the qualification pedigree required for defense and space program procurement.
FAQ
What is the difference between RM372 and RM322 in the AirBorn R Series?
RM322 = straight (vertical) receptacle, female contacts. RM372 = right-angle plug, male contacts. They form the standard mating pair for perpendicular board-to-board interfaces in backplane and card-cage architectures.
What does the “321” termination code mean in RM372-059-321-5900?
321 designates PTH (plated through-hole) pin contacts in a right-angle (horizontal) orientation — the plug-side equivalent of the 221 (PTH socket, straight) code used in the RM322 receptacle family.
Which receptacle mates with the RM372-059-321-5900?
The RM322-059-221-2900 (straight receptacle, 59 contacts) is the standard mating receptacle. Any MIL-DTL-55302-qualified 59-contact R Series receptacle from a compliant manufacturer is also interchangeable.
Why specify a right-angle plug instead of a straight plug?
The right-angle orientation reduces the connector’s vertical profile above the PCB, enabling card insertion into front-panel card cages without exceeding the card’s height envelope. Straight plugs are used where vertical clearance is available and the interface is accessed from above rather than from the card edge.
What is the current rating and contact material?
3A per contact; beryllium copper contacts with gold plating; 5 GΩ insulation resistance minimum. The four-point contact wiping system maintains these ratings through high-shock (100g) and vibration environments per MIL-DTL-55302.
Is the RM372-059-321-5900 approved for space applications?
Yes. The AirBorn R Series has demonstrated flight heritage on Space Shuttle and Mars Rover programs. For programs requiring specific radiation characterization or outgassing documentation per NASA ASTM E595, consult Molex (AirBorn) directly for space-grade lot documentation.
