MIL-C 26482 Series I & II

MIL-DTL-26482 (originally MIL-C-26482) Connector

MIL-DTL-26482 (originally MIL-C-26482) Medium Density multi-pin, bayonet locking, miniature military circular connector ~ rugged construction with minimum weight.

Description

Description

The MIL-DTL-26482 specification covers the general requirements for two series of environment resisting, bayonet quick disconnect, MIL-C-26482 miniature, circular electrical connectors with 5 keyways. An Aluminium Alloy shell and hardware create a rugged connector with minimal weight. Each series can include ‘hermetic’ receptacles. The two series of connectors are intermateable when using power contacts and are not intermateable when using shielded contacts. Bayonet fixing ensures rapid positive mating and unmating of the connector.

Historically much used in commercial, military and aerospace environments as well as robotics, communications, medical equipment, automation and sensors. The versatility of these connectors is proven by the fulfilment of requirements ranging from general purpose to space environmental.

Complete moisture sealing can be achieved in the Environmental versions by means of seals at shell, peripheral, interfacial and wire. A resilient synthetic rubber insulator and integrated wire can guarantee a liquid tight assembly. Solder contacts in Series I are permanently bonded to the insulator.

Key Features

Key Features

  • Conform to MIL-DTL-26482 (originally MIL-C-26482)
  • BS9522 F0017 (solder) with key/keyway orientation (optional rotational polarisation).
  • Quick disconnect bayonet coupling for positive mating
  • 9 shell sizes, 8 through 24
  • Various rugged shell styles
  • Solder or crimp contact versions
  • Up to 61 contacts (20 AWG).
  • Environmental and hermetic versions available.
  • Amphenol 62GB range is a good example of this connector family, other part numbers include 62GB / 602GB / ITT PT / ITT PTSE / ITT KPT / ITT KPTSE / AB ABO5
  • Backshells must be ordered separately for these connectors. There is a wide variety of backshell types available in the Mil-C-M85049 range. These include simple strain reliefs, heat shrink boot adaptors, gland seals and EMI/RFI backshells.
  • Plastic lightweight versions available. Souriau UTS Hi-seal waterproof bayonet connectors. Dynamic IP68/IP69K mated or unmated. Design based on MIL-DTL-26482, so fully intermateable and interchangeable with identical planforms in metal 26482 solutions and equivalents such as BS 9522 F0017, NFC93422, HE301B, VG 95328. Connectors supplied with fitted solder contacts as standard. 250 mating cycles, overmouldable and RoHS compliant.
Specifications

Specifications

Materials

  • Shell
    Normal – Aluminium alloy, plated olive drab chromate, electroless nickel or RoHS compliant Black over zinc
    Hermetic – Steel, stainless steel & passivate
    Sizes – 08, 10, 12, 14, 16, 18, 20, 22, 24
  • Insulator – Neoprene/Polychloroprene rubber
  • Contacts – Gold or gold/tin lead over copper alloy or nickel
    Sizes – 08, 10, 12, 14, 16, 20, 24
    Solder / PC tail ~ 2 to 61 Male or Female

Electrical

  • Current
    Size 20 : 7.5A
    Size 16 : 13A
    Size 12 : 23A
  • Voltage
    500V rms (size 20 contacts)
    300V rms (size 16 contacts
  • Contact Resistance
    Normal – 4 mOhm Sign (size 20) 3 mOhm Sign (size 16)
    Hermetic – 30 mOhm Sign (size 20) 14 mOhm Sign (size 16)
  • Shielding
    70 dB to 5 MHz
    40 dB to 100MHz

Mechanical

  • Contact to insulator holding force
    20 AWG > 68 N
    16 AWG > 113 N
  • Mechanical operations – 500 Min
  • Vibration – to NFC 20-616.

Environmental

  • Working temperature : -55 to +125 degrees C.
  • Resistance to salt spray – 48 hours at environmental temp
  • Damp heat – > 21 days
  • Sealing
    Crimp = < 8cm3/hr at 1 bar diff. pressure
    Solder = < 16cm3/hr at 2 bar diff. pressure
  • Hermetic – < 2.8mm3/hr at 1 bar diff. Pressure

Types

  • Series 1 solder
    MS 3110 – Wall mount receptacle
    MS 3111 – In-line receptacle
    MS 3112 – Box mount receptacle
    MS 3113H – Hermetic sealed solder receptacle
    MS 3114 – Jam nut receptacle
    MS 3116 – Straight plug
    MS 3119E – Through bulkhead receptacle
    MS 3120 – Wall mount receptacle
    MS 3121 – In-line receptacle
    MS 3122E – Box mount receptacle
    MS 3124 – Jam nut receptacle
    MS 3126 – Straight plug
    MS 3127E – Large flange box mount receptacle
    MS 3128 – Large flange wall mount receptacle
  • Series 2 crimp
    MS 3440H – Hermetic sealed box mount receptacle
    MS 3442H – Wide flange, hermetic sealed box mount receptacle
    MS 3443H – Hermetic sealed solder receptacle
    MS 3449H – Hermetic sealed jam nut receptacle
    MS 3470 – Wall mount receptacle
    MS 3471 – In-line receptacle
    MS 3472 – Wide flange wall mount receptacle
    MS 3473N – Hermetic sealed solder receptacle
    with crimp retention
    MS 3474 – Jam nut receptacle
    MS 3475 – Straight plug with RFI grounding
    MS 3477N – Hermetic sealed box mount receptacle
    with crimp retention
    MS 3479N – Hermetic sealed jam nut receptacle
    with crimp termination
Applications

Applications

MIL-DTL-26482 Series I Connector, bayonet coupling, solder or front release crimp removable (125ºC). Hermetic sockets are also available.

MIL-DTL-26482 Series II Connector, bayonet coupling, rear release crimp removable contacts (200ºC), (classes H, N, and W, 175°C). Series 2, hermetic connectors are available with non-removable solder type contacts.

Series II connectors are intermateable and interchangeable with both solder and front-release crimp Series 1. They are also identical to the inactivated MIL-DTL-83723 Series I connectors.

Environmentally sealed, the shell seal is achieved when the plug shell pushes against the sealing ring in the receptacle as the connectors are mated. A peripheral seal around the edge of the pin insulator is designed so that mating the connector puts tension on the seal and greatly reduces compression set. An interfacial seal is achieved by the insulator faces meeting when the plug and receptacle are mated. A wire seal is accomplished by a multiple ripple design.