AERO MS27508E20F16S
- 16-position female receptacle connector with jam nut mount configuration
- Complies with MIL-DTL-38999 Series II military specifications
- Hermetically sealed construction for harsh environment operation
- Crimp termination for reliable wire connections
- Shell size 20-16 with quick-disconnect bayonet coupling
In aerospace and defense applications, reliable electrical connections are mission-critical. The AERO MS27508E20F16S connector is engineered to meet this challenge, providing robust signal and power transmission in the most demanding environments. Built to the rigorous standards of MIL-DTL-38999 Series II, this connector delivers consistent performance where vibration, temperature extremes, and moisture are constant threats.
This 16-position receptacle features a jam nut mount design that simplifies integration into avionics systems, satellite platforms, and ground defense equipment. Its hermetic sealing ensures protection against dust, moisture, and other contaminants, making it suitable for both airborne and spaceborne applications. The crimp termination method provides excellent electrical continuity while allowing for efficient installation and maintenance operations.
Related Products For Your Business
The AERO MS27508E20F16S is a Shell Size 20, MIL-DTL-38999 Series II rear panel box mount receptacle with insert 20-16, 16 size #20 crimp socket contacts, and normal polarizing position F. It is the socket-contact variant of the MS27508E20F16 family — specified when the mating plug cable assembly carries pin contacts, requiring the fixed enclosure-side receptacle to present socket cavities. Like all MS27508-family connectors, the rear low-profile design omits backshell accessory threads entirely, delivering the minimum achievable axial depth behind the panel face and making it the correct choice for equipment bays where PCBs, heat sinks, or structural frames occupy the space immediately inside the enclosure wall.
MS27508S vs. MS27508P — When to Specify Each
Contact gender assignment in circular connector pairs is a system-level decision driven by safety, maintenance practice, and harness design convention. In most defense and aerospace programs, the plug (cable side) carries socket contacts to protect field-handlers from exposed conductors when the cable is disconnected, while the receptacle (panel side) carries pin contacts — the conventional arrangement used in the MS27508E20F16PB. The MS27508E20F16S reverses this: socket contacts in the receptacle, pin contacts in the plug. This reversed arrangement is specified when the program’s cable assemblies are standardized with pin-loaded plugs, when hermetic receptacle design constrains the contact type to sockets, or when the interface control document (ICD) explicitly calls for socket-side receptacles for connector saver or test adapter compatibility reasons.
Technical Specifications and Supply Chain
The MS27508E20F16S carries identical environmental and electrical performance to the pin-contact variant: Class E (bright cadmium over electroless nickel) with 500-hour salt spray resistance, −65°C to +175°C operating range, IP67 sealing, 45dB EMI attenuation at 100MHz–10GHz, and 500 mating cycles per SAE-AS39029. Manufactured by Aero-Electric (Conesys) under AS9100:2016 and ISO 9001:2015 certification, the part is cross-sourceable from Amphenol Aerospace, TE Connectivity Deutsch, Souriau, ITT Cannon, and Glenair. All shipments include certificates of conformance, lot traveler records, and incoming inspection documentation per AS6081 anti-counterfeit requirements.
FAQ
What is the difference between MS27508E20F16S and MS27508E20F16PB?
Two differences: contact type (S = socket vs. P = pin) and keying (no suffix = normal F position vs. B = sub-variant B). The socket variant accepts pin-contact plugs; the pin variant accepts socket-contact plugs. The normal keying mates with any standard F-keyed plug without sub-variant restriction.
Why would a receptacle carry socket contacts instead of pin contacts?
Socket contacts in the receptacle are specified when the mating cable plug is pre-loaded with pin contacts — often because the program’s harness standard, test adapter interface, or ICD requires pin-side plugs. Reversed contact gender is less common but fully valid per MIL-DTL-38999 and used in specific aerospace and satellite programs where system-level interface documents mandate it.
What does “normal polarizing position F” mean — is there a keying sub-variant?
Normal (N) means the insert is in the standard F angular position with no additional master key rotation. No suffix letter is added to the part number. The normal position mates with any other normal-keyed receptacle or plug of the same shell size and insert, without the mis-mate protection afforded by sub-variants A through D. Specify a keying sub-variant when multiple connectors of the same footprint occupy the same panel zone.
Does the MS27508E20F16S accept a backshell?
No. The MS27508 rear low-profile design has no accessory threads on the rear. This is intentional — it provides the minimum axial depth behind the panel. A protective dust cap is recommended when unmated.
Which plugs mate with the MS27508E20F16S?
Any MIL-DTL-38999 Series II plug in Shell Size 20, insert 16, normal polarizing position F, loaded with pin contacts — including MS27473T20F16PN (standard plug) and MS27484T20F16PN (RFI grounding plug) from any QPL-qualified manufacturer.
Is this part interoperable across QPL-qualified manufacturers?
Yes. The MS27508E20F16S is fully interoperable with equivalent parts from Amphenol Aerospace, TE Connectivity Deutsch, Souriau, Glenair, and ITT Cannon. Dimensional and functional interchangeability is mandated by MIL-DTL-38999, ensuring cross-source compatibility across program production lots.
