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Amphenol M28840521SB circular connectors with six keying options and multiple termination methods

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Amphenol M28840521SB circular connectors with six keying options and multiple termination methods

Description : Backshells and Cable Clamps RoHS

Mfr. Part # : M28840/521SB

Model Number : M28840/521SB

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Product Overview

Amphenol PCD now offers a complete line of M28840 Circular Connectors according to MIL-DTL-28840. These precision-machined, highly reliable shipboard application connectors are designed to meet superior mechanical shock performance and withstand extreme environmental conditions and demanding applications. Amphenol also provides a full range of backshells to support this connector series. Applications include US Navy shipboard, surface craft and submarines, mission-critical combat and communications systems, mobile tactical shelters, electronic battlefield networks, and mobile emergency telecommunications (MET) stations.

Product Attributes

Brand: Amphenol PCD
Standard: MIL-DTL-28840
Plating Options: Cadmium, Zinc Nickel & Tin Zinc (Commercial only)
Keying Options: Six keying options (1, 2, 3, 4, 5, 6)
Contact Termination: Crimp termination, rear insert and front release
Backshell Types: Straight, 90, and 45
Material (Shells, Coupling Nuts, Jam Nuts): Aluminum Alloy per ASTM B211, or Stainless Steel per AMS-QQ-S-763
Material (Contacts): Copper Alloy, 50 microinches Gold plated per ASTM B488 Type 3, Code C Class 1 over nickel underplate per QQ-N-290 Class 2
Material (Socket contact hood): Stainless Steel passivated
Material (Insulators): High Grade Engineering Plastic
Material (Contact Retention Clip): Beryllium Copper
Material (Grommet Seal): Blended Elastomer

Technical Specifications

Specification	Details
Current Rating (Size #20 contact)	7.5A (20AWG), 5.0A (22AWG), 1.5A (28AWG), 1.0A (30AWG)
Test Voltage	1000 VAC RMS at sea level
Insulation Resistance	5000 megohms min. (at ambient temp)
Contact Resistance	Per SAE-AS39029
Operating Temperature	-55C to +200C
Shock	In accordance with MIL-S-901 grade A
Vibration	In accordance with EIA-364-28
Magnetic Permeability	Less than 2.0 (Aluminum)
Shell Sizes	11, 13, 15, 17, 19, 23, 25, 29 & 33
Pin Counts	7, 12, 21, 31, 42, 64, 92, 121 and 155
Contact Size	20
Wire Accommodation	AWG 20 to AWG 28
Contact Type (Military P/N)	M39029/83-508 (Pin), M39029/84-509 (Socket)
Contact Type (Military P/N)	M39029/83-450 (Pin), M39029/84-452 (Socket)
Contact Type (Military P/N)	M39029/83-451 (Pin), M39029/84-453 (Socket)
Durability	500 cycles (Meets SAE-AS39029, paragraph 3.5.9)
Contact Retention	Max. axial displacement 0.012 inch (0.30 mm) (Meets MIL-DTL-38999, paragraph 3.23)
Permeability	No greater than 2.0 (Meets SAE-AS39029, paragraph 3.5.1)
Vibration	No electrical discontinuity of 1 microsecond or greater (Meets SAE-AS39029, paragraph 3.5.10)
Salt Spray (Corrosion)	Withstand 48 hours without defects (Meets SAE-AS39029, paragraph 3.5.12)
Temperature Life	1,000 hours without defects (Meets SAE-AS39029, paragraph 3.5.13)
Dielectric Withstanding Voltage	No evidence of breakdown or flashover (Meets SAE-AS39029, paragraph 3.5.19)
Workmanship	Uniform quality, free from foreign material, burrs, or sharp edges (Meets SAE-AS39029, paragraph 3.7)

2411041626_Amphenol-M28840-521SB_C20055632.pdf

Amphenol M28840521SB circular connectors with six keying options and multiple termination methods Images

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