AIRBORN RM322-059-221-2900
- 47-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
- Through-hole board mount with straight orientation
In aerospace and defense systems, reliable electrical connections are critical for ensuring uninterrupted operation in extreme environments. The AIRBORN RM322-059-221-2900 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 RM322-059-221-2900 is a MIL-DTL-55302 qualified rugged rectangular receptacle (female, straight) from the R Series — 59 contacts, 3 rows, 0.075″ (1.91mm) pitch, plated through-hole termination, PPS housing, −65°C to +125°C. It is the 59-contact straight receptacle complement to the RM372-059-321-5900 right-angle plug and the smaller sibling to the RM322-071-221-2900 71-contact variant. Flight-proven on Space Shuttle and Mars Rover programs, the R Series four-point contact system delivers reliable connectivity in high-vibration and high-shock aerospace and defense environments.
RM322 Contact Count Comparison
| Part Number | Contacts | Rows | Orientation | Gender | Termination |
|---|---|---|---|---|---|
| RM322-059-221-2900 | 59 | 3 | Straight (vertical) | Receptacle (female) | PTH |
| RM322-071-221-2900 | 71 | 3 | Straight (vertical) | Receptacle (female) | PTH |
| RM372-059-321-5900 | 59 | 3 | Right Angle | Plug (male) | PTH |
The 59-contact count positions the RM322-059-221-2900 for mid-density signal routing in VMEbus daughtercards, SBC edge connectors, and avionics payload interface boards where 71-contact density is excessive but higher than a 47-contact arrangement. The PPS (polyphenylene sulfide) housing withstands soldering temperatures, MIL-spec cleaning solvents, and the full −65°C to +125°C military temperature range. Beryllium copper contacts with gold plating deliver 5 GΩ insulation resistance and a 3A current rating per contact, with the four-point wiping contact design maintaining consistent contact resistance through vibration and thermal cycling. Available from AirBorn authorized distributors (now Molex) with standard 6–8 week lead time; in-stock inventory ships same day through distributor channels.
FAQ
What does each field in RM322-059-221-2900 mean?
RM3 = R Series, 3 rows; 22 = receptacle, straight, with mounting ears, PPS housing; 059 = 59 contacts; 221 = PTH socket, straight; 2900 = hardware/finish configuration code.
What is the contact pitch and how does it compare to other AirBorn series?
0.075″ (1.91mm) — the same as all RM3xx R Series connectors. AirBorn’s W Series uses 0.100″ (2.54mm) pitch; the R Series 0.075″ pitch enables higher contact density per unit board area for space-constrained avionics designs.
What is the mating plug for the RM322-059-221-2900?
The RM372-059-321-5900 (right-angle plug, 59 contacts) or equivalent RM352-059 (straight plug) in the same contact count. All R Series plugs and receptacles of matching contact count are mechanically and electrically compatible.
What temperature range and current rating does this connector support?
−65°C to +125°C operating temperature per MIL-DTL-55302; 3A per contact with beryllium copper, gold-plated contacts; 5 GΩ insulation resistance minimum.
Is the RM322-059-221-2900 MIL-DTL-55302 qualified?
Yes. The entire AirBorn R Series is approved to MIL-DTL-55302 (formerly MIL-C-55302) and is interchangeable with other MIL-DTL-55302-compliant connectors from other qualified manufacturers.
What is the typical lead time and minimum order quantity?
Standard lead time is 6–8 weeks from AirBorn authorized distributors. In-stock items ship same day with no minimum order quantity. Out-of-stock items may carry a minimum order quantity — confirm with distributor at time of order.
