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XC bayonet circular plug and receptacle with hyperboloid contacts
Representative image
XCG waterproof bayonet plug and receptacleCXCH-01 heavy-wall bayonet connectors

XC Bayonet Circular Connectors with Hyperboloid Contacts

GJB 2889 bayonet · hyperboloid sockets · 1–62 contacts · 5–40 A

XC is a family of bayonet circular connectors built to GJB 2889. Hyperboloid wire-spring sockets give smooth mating and low contact resistance, and the same 32 layouts in shells 14 to 39 are offered with crimp (XC), solder (XCH, CXCH), PCB (XCB), glass-sealed and through-bulkhead contacts. CXCH-01 adds a heavier shell wall, and XCG is a waterproof version that mates with XC.

Coupling
Bayonet, five keys
Contacts
1 to 62
Current
5 / 10 / 20 / 40 A
Rated voltage
500 V (1500 V test)
Temperature
−55 to +150 °C
Mating cycles
500

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Key features

  • Hyperboloid wire-spring sockets for low insertion force and low contact resistance
  • Bayonet coupling with five key positions (N, W, X, Y, Z) and blind-mating guidance
  • 32 standard layouts in shell sizes 14 to 39 with Ø1, Ø1.5, Ø2 and Ø3 mm contacts
  • Crimp (XC), solder (XCH, CXCH) and PCB (XCB) terminations
  • Glass-sealed square-flange receptacles and through-bulkhead receptacles
  • CXCH-01 heavy-wall version for ships, telecom equipment and machine tools
  • XCG waterproof version, sealed against 0.3 atm (35.5 kPa), mates with XC
  • Straight and 90° cable clamps and shielded backshells
  • Marine-environment version: see XCA

Specifications

Electrical
ParameterValueCondition
Rated voltage / withstanding voltage500 V / 1500 VNormal atmosphere
Rated voltage / withstanding voltage, damp heat500 V / 750 V (sealed), 500 V / 1125 V (unsealed)
Rated voltage / withstanding voltage, 1 kPa150 V / 300 V (sealed), 250 V / 300 V (unsealed)
Insulation resistance≥ 5000 MΩ / ≥ 100 MΩNormal / damp heat
Shell-to-shell conductivity≤ 0.012 Ω (nickel, zinc iridescent), ≤ 0.15 Ω (zinc olive-drab)
Mechanical
ParameterValueCondition
CouplingBayonet
Durability500 mating cycles
Vibration10–2000 Hz, 20 g
Shock100 g peak
Acceleration100 g
Environmental
ParameterValueCondition
Operating temperature−55 to +150 °C
Relative humidityUp to 95 % at 40 °C
Altitude30,000 m
Leak rate, through-bulkhead receptacle≤ 46 Pa·cm³/s50.7 kPa differential
Leak rate, glass-sealed receptacle≤ 0.1 Pa·cm³/s152 kPa differential
XCG water sealing0.3 atm (35.5 kPa)
Materials
ParameterValueCondition
ShellHigh-strength aluminum alloy; steel for glass-sealed receptacles
InsulatorThermoset plastic; glass for glass-sealed receptacles
Grommet and sealsSilicone rubber
ContactsCopper alloy, silver or gold plated; crimp contacts rear-release

GJB 2889 — Chinese specification to which the XC family is built.

Values not listed above — for example vibration level, leak rate or other environmental tests — can be tested to your requirements, including third-party testing. Specifications are subject to change; contact us for the current datasheet.

Crimp contacts and wire sizes

ContactCrimp typeColour bandCrimp barrel ID (mm)Wire (mm²)AWG
Ø1ARed1.00.20 / 0.35 / 0.5022–20
Ø1BBlue1.30.7520–18
Ø1.5ARed1.40.75 / 1.0018
Ø1.5BBlue1.81.20 / 1.5016–14
Ø2ARed2.12.0014
Ø2BBlue2.52.50 / 3.0012
Ø3ARed3.24.0012
Ø3BBlue3.45.0010

Versions

Series codeVersionNotes
XCCrimp contacts
XCHSolder contacts
XCBPCB solder receptacles
XC-F-MGlass-sealed square-flange receptacle
XC-S0, S, S1, S2-MThrough-bulkhead sealed receptaclesPins on one side, sockets on the other
CXCHSolder version derived from XCSame performance as XCH
CXCH-01Heavy-wall solder versionShells 18 to 42; for ships, telecom and machine tools
XCGWaterproof solder versionSealed to 0.3 atm; mates with XC; Ø4.5 mm 65 A contact available

Contact sizes and current ratings

Contact sizeEngaging diameterContact resistanceContact resistance (hermetic)Current ratingWire size
Ø11.0 mm≤ 4.5 mΩ≤ 9 mΩ (potted) / ≤ 13.5 mΩ (glass-sealed)5 A0.20–0.75 mm² (AWG 22–18)
Ø1.51.5 mm≤ 2.5 mΩ≤ 5 mΩ / ≤ 7.5 mΩ10 A0.75–1.50 mm² (AWG 18–14)
Ø22.0 mm≤ 1.25 mΩ≤ 2.5 mΩ / ≤ 3.75 mΩ20 A2.00–3.00 mm² (AWG 14–12)
Ø33.0 mm≤ 0.75 mΩ≤ 1.5 mΩ / ≤ 2.25 mΩ40 A4.00–5.00 mm² (AWG 12–10)

How to order

XC [shell][type][contacts][contact type][finish and backshell][key]

Example: XC14F4KD — XC square-flange receptacle, shell 14, 4 socket contacts, shielded, zinc iridescent, key N

Code segmentOptions
Series
  • XC Crimp
  • XCH Solder
  • XCB PCB solder
Shell
  • 14–39 14, 18, 22, 24, 27, 30, 33, 36, 39
Type
  • T Plug
  • Y Round-flange receptacle
  • F Square-flange receptacle
  • S0, S, S1, S2 Through-bulkhead receptacle
Contacts
  • 1–62 See insert arrangements
Contact type
  • Z / Z1 Pin, silver / gold
  • K / K1 Socket, silver / gold
  • M / M1 Sealed-receptacle contact, nickel / gold
Finish and backshell
  • (none) Anodized black, no rear thread, no backshell
  • D / D1 / D2 / D3 / D4 / D40 No rear thread: zinc iridescent, electroless nickel, iridescent cadmium, zinc olive-drab, olive-drab cadmium, stainless steel
  • P / P1 / P2 / P3 / P4 / P40 Rear thread for backshell, same finish order as D
  • E Rear thread, anodized
  • H / HQ … Straight cable clamp fitted
  • HP … Straight shielded backshell fitted
  • W / WP … 90° cable clamp or shielded 90° backshell fitted
Key
  • (none) N
  • W, X, Y, Z Alternate keys

A mated pair is written as receptacle/plug, for example XC14F4KD/P.

Add (B) for B-type crimp contacts for larger wire, for example XC30F30ZD(B).

Cadmium finishes are not RoHS compliant and are supplied on request.

Insert arrangements

32 standard layouts, viewed from the mating face of the pin insert. The arrangement number is written as shell size – layout (for example 25-35).

32 layouts

ArrangementContactsContact sizes
14-111 × Ø3
14-222 × Ø1.5
14-332 × Ø1, 1 × Ø1.5
14-444 × Ø1
18-442 × Ø1, 2 × Ø3
18-555 × Ø1.5
18-777 × Ø1
22-10106 × Ø1, 4 × Ø1.5
22-141414 × Ø1
24-555 × Ø3
24-121212 × Ø1.5
24-191919 × Ø1
27-12124 × Ø1, 8 × Ø2
27-191914 × Ø1, 5 × Ø1.5
27-242424 × Ø1
30-151513 × Ø1.5, 2 × Ø2
30-191910 × Ø1, 4 × Ø1.5, 3 × Ø2, 2 × Ø3
30-222210 × Ø1, 6 × Ø1.5, 6 × Ø2
30-303030 × Ø1
33-222218 × Ø1.5, 4 × Ø2
33-272717 × Ø1, 4 × Ø1.5, 2 × Ø2, 4 × Ø3
33-414141 × Ø1
36-404034 × Ø1, 4 × Ø1.5, 2 × Ø2
36-414131 × Ø1, 10 × Ø1.5
36-555555 × Ø1
39-161616 × Ø3
39-353516 × Ø1, 13 × Ø1.5, 2 × Ø2, 4 × Ø3
39-363618 × Ø1, 6 × Ø1.5, 12 × Ø2
39-464630 × Ø1, 12 × Ø1.5, 4 × Ø2
39-474739 × Ø1, 4 × Ø1.5, 2 × Ø2, 2 × Ø3
39-515143 × Ø1, 8 × Ø1.5
39-626262 × Ø1

Contact counts and terminations

Standard contact counts

  • 1
  • 2
  • 3
  • 4
  • 5
  • 7
  • 10
  • 12
  • 14
  • 15
  • 16
  • 19
  • 22
  • 24
  • 27
  • 30
  • 35
  • 36
  • 40
  • 41
  • 46
  • 47
  • 51
  • 55
  • 62

Terminations

  • Crimp
  • Solder
  • PCB
  • Glass-sealed
  • Through-bulkhead

Typical applications

  • Telecom and computing equipment
  • Instrumentation and test equipment
  • Machine tools
  • Shipboard equipment
  • Industrial control cabinets

Frequently asked questions

What is the difference between XC and XCA?

They share the same layouts and contacts. XCA is the marine-environment version with stainless-steel options and 240 h acid salt spray testing; XC is the standard family with crimp, solder, PCB and hermetic versions.

Does XCG mate with XC?

Yes — XCG is the waterproof version and mates with XC plugs and receptacles of the same shell and layout.

From sample to production

  1. Send your requirement

    Part number, drawing, pin-out or a short description of your application.

  2. Configuration and quote

    Our engineers match the configuration and reply with a drawing and quotation.

  3. Samples

    Samples are made to your order. Third-party testing to your specification is available on request.

  4. Your approval

    You test the samples in your own equipment and approve them.

  5. Series production

    Production follows the approved sample configuration.

Need a quote or a drawing?

Send your part number, pin-out or drawing. An engineer will reply by email.

Request a quote

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