MIL-DTL-28840 · Receptacle (21) with straight EMI/RFI backshell · Shell C · Arrangement 1 · Contact P (pin) · Key 1
MIL-DTL-28840 (MIL-C-28840)
M28840/21
Receptacle with straight EMI/RFI backshell
C
1
P (pin)
1 (of 6)
AWG 20
AWG 20 to AWG 28
Crimp, rear insert / front release
Threaded, scoop-proof
Cadmium, zinc-nickel, tin-zinc
Grommet and seal, IP67 unmated
RFI / EMI shielded
Box / equipment-case mount
Shipboard equipment enclosures and C4ISR racks
QPL
The /21 slash sheet covers the box-mount version of the EMI/RFI-backshelled receptacle. Box mounting fixes the connector to the wall of an equipment case rather than through a bulkhead, which is the normal arrangement when the connector is the interface of a sealed electronics enclosure rather than a cable passage. The same shell size, insert arrangement and keying matrix as the wall-mount /20 applies, so an enclosure redesign between the two mounting styles does not change the mating cable assembly.
Interchangeable with any qualified M28840 connector. Mating interface identical to the wall-mount /20 with the same shell size and arrangement.
| Airoadcon | Equivalent source 1 | Equivalent source 2 | Equivalent source 3 |
|---|---|---|---|
| Airoadcon | M28840/21CG1P1 | ||
| Amphenol | M28840/21CG1P1 | ||
| Glenair | M28840/21CG1P1 | ||
| TE / Deutsch | M28840/21CG1P1 |
Box-mount receptacles are specified when the connector belongs to the equipment rather than to the ship's structure. That distinction matters at refit: an enclosure can be swapped without disturbing the bulkhead penetration, and the EMI backshell travels with the box. Airoadcon supplies the M28840 range with wall-mount, box-mount, jam-nut, in-line and plug styles.
Need M28840/21CG1P1?
Cross-brand compatible. Free samples available. 4-week lead time on standard configurations.
Email: info@airoadcon.com | Phone: +86-189-9192-7716
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