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MKJ Series Connectors

71% weight and 52% size reduction

in an industry leading quick disconnect

Features & Benefits

Cannon MKJ Series: Reduction in weight and

size without loss of reliability

The MKJ family of mini-circular connectors provides similar electrical

and mechanical characteristics as larger and heavier Military Standard

Environmental connectors.

ITT Cannon continues its tradition of innovation with the

MKJ line of miniature circular connectors. MKJ products

tackle your matrix of harsh environment applications.

These connectors offer three coupling methods (threaded,

bayonet and breakaway) in a highly engineered design

with reduced weight by 71% and size by 52% without

sacrificing the environmental performance or reliability.*

Bringing together a unique combination of design,

functionality and flexibility, the MKJ excels in delivering

a product for a broad variety of harsh environment

applications. The MKJ series comes with rear accessory

threads or integral band platform for direct attachment

of cable shield and overmold. MKJ provides unparalleled

functionality for numerous applications across multiple

markets including Industrial, Defense and Aerospace.

Why customers benefit from choosing

ITT Cannon's MKJ connectors:

• Available in rear-release crimp, PC tail or soldercup

contacts

• Shells and jam nuts available in aluminum alloy or

corrosion resistant stainless steel (AMS-QQ-S 763)

• Up to 2000 mating cycles

Technical Overview

For size 23 contact

Max Vibration 200 m/s

(20 g’s) rms

#22 - #28 AWG wire

Max. current 5 Amps / max. voltage 500 VAC

-55°C to +150°C / -67°F to +300°F

Our products do what we say they will do

Contact Availability

Integral Band Platform

Offered in crimp, PC tail and

soldercup contact designs

with proven reliability in harsh

environment conditions.

Contacts meet stanard

MIL-C-39029.

Intergral band platform allows

direct attachment of cable

shield to connector.

MKJ 1 and 5 Robust

Coupling Mechanism

Tooling & Accessory

Options

MKJ’s internal ratchet

mechanism system meets the

robust MIL-DTL-38999 shock

and vibration requirement

and is well suited for harsh

environment applications.

Dust cap and backshells

maintain the rear environmental

sealing, crimp, contact insertion/

extraction and banding tools

are also available.

Multiple Keying Positions

High Density Connector

Master Key and 2 secondary

keys. Multiple clocking

positions available.

Connector uses size 23 contacts

accepting #22 to #28 wire.

Contacts spacing is reduced to

0.076 inches providing a

compact yet robust package.

*When compared to the 38999 layouts with size 22 contacts.

Delivering durable, reliable and lightweight

products for military & commercial aviation

Teflon nickel, black zinc

nickel

and

olive drab

cadmium

plating maintain

robust reliability for 500 hours

of salt spray.

A variety of the series offer

ruggedized computers and

hand held communications

equipment a

2,000 mating

cycle.

MKJ’s

multiple coupling

mechanisms

equip connectivity

for navigation and telemetry

applications.

Plugs and receptacles are

environmentally sealed

meet the harsh environments

Applications

• Sensors

• Satellites

• Instrumentation

• Missile systems

• Avionic systems

• Soldier technology

• Industrial equipment

• UAVs / unmanned systems

• Navigation & telemetry equipment

• Medical test & diagnostic equipment

• Ruggedized computers & hand-held

communication equipment

• Commercial & military aircraft

electronics

Coupling Styles

The wide range of coupling options available for the MKJ Series allows compatible

connectors to meet your demands even in the harshest environments.

Coupling

Markets &

Segments

Hardware

EMI Shielding

Effectiveness

Mating Cycles

RoHS

Compliant

MKJ0

UN Thread

MKJ 1

Double Start

MKJ 3

Bayonet

MKJ 4

Breakaway

MKJ 5

Triple Start

Defense, Aerospace, Medical, Industrial, Commercial

Aluminum/

Stainless Steel

Aluminum/

Stainless Steel

Aluminum/

Stainless Steel

Aluminum/

Stainless Steel

Aluminum/

Stainless Steel

40db attentuation, 100Mhz to 1000Mhz

2000

250 Aluminum

2000 Stainless

Steel

Available

Shells - Aluminum Alloy or Stainless Steel

Insultators - Thermoplastic

Seals - Fluorosilicone

Contacts - Copper Alloy with gold over nickel plating

2000

500

Materials

Product Performance

MKJ Series Performance

Contact Size

Spacing

Contact Type

Current Rating

Wire Accommodation

DWV Voltage (VAC)

Insultation Resistance

Operating Temperature

Contact Resistance

Shock/Vibration

Clocking Position

Housing Materials

Receptacle Mounting

5 Amps

#22 - 28 AWG

750 VAC

#23

.076”

#20

.106”

7.5 Amps

#20 - 24 AWG

1000 VAC

-55°C to +150°C

8 Milliohms

300g / 37g

Master Key and 2 Secondary Keys. 6 Clocking Positions

Aluminum and Stainless Steel

Jam Nut, Square Flange, In-Line

#16

.170”

13 Amps

#16 - #20 AWG

1800 VAC

#12

.230”

23 Amps

#12 - #14 AWG

1800 VAC

Rear Crimp, Solder Cup, PCB Mount

5000 Megohms RMS Sea

How to Order Guide

Configurator

MKJ1

Series

Class

Shell Style

Material/

Plating

9-19

Shell Size

Contact

Arrangement

Contact

Style

Shell

Clocking

Modifications

SERIES

MKJ0 - Threaded Coupling, UN Thread

MKJ1 - Threaded Coupling, Double Start ACME Thread

MKJ3 - Bayonet Coupling

MKJ4 - Breakaway/Quick Disconnect

MKJ5 - Threaded Coupling, Triple Start ACME Thread

CLASS

A - Environmental Plug & Receptacle with Banding/Overmolding Attachment

B - Environmental Plug & Receptacle with Threaded Accessory Attachment

C - Back-Potted Plug/Receptacle - PC/Flex/Solder

D - C Filtered Receptacle - Fixed Contacts

E-

F-

G-

H-

L Filtered Receptacle - Fixed Contacts

Pi Filtered Receptacle - Fixed Contacts

Space

Hermetically Sealed Receptacle - Fixed Contacts

Jam Nut Receptacle - Front Panel Mount (MKJ4 series only)

Jam Nut Plug - Rear Panel Mount (MKJ4 series only)

Jam Nut Plug - Front Panel Mount (MKJ4 series only)

Straight Plug with Self-Locking Coupling Nut (MKJ0 series only)

Straight Plug with Self-Ratchet Coupling Nut (MKJ1 series only)

SHELL STYLE

1 - In-Line Receptacle

2 - Box Mount Receptacle (Square Flange)

3 - Receptacle, Round, Solder Mount

4 - Box Mount Plug (Flange)

6 - Straight Plug

7 - Jam Nut Receptacle - Rear Panel Mount

8 -

9 -

10 -

16 -

26 -

MATERIAL/PLATING

C - Aluminum/Anodize, Black

F - Aluminum/Electroless Nickel

K - Stainless Steel/Passivated

T - Aluminum/Teflon Nickel

W - Aluminum/OD Cad

Y - Stainless Steel/Electroless Nickel, Black

Z - Aluminum/Zinc Nickel, Black

N - Stainless Steel/Electroless Nickel

Series MKJ0, MKJ1, MKJ3, MKJ4

Series MKJ5

Series MKJ0, MKJ1, MKJ3, MKJ4

Series MKJ5

Series MKJ0, MKJ1, MKJ3, MKJ4

Series MKJ5

Series MKJ0, MKJ1, MKJ3, MKJ4

Series MKJ5

Series MKJ0, MKJ1, MKJ3, MKJ4

Series MKJ5

Series MKJ0, MKJ1, MKJ3, MKJ4

Series MKJ5

Series MKJ0, MKJ1, MKJ3, MKJ4

Series MKJ5

Series MKJ0, MKJ1, MKJ3, MKJ4

Series MKJ5

Series MKJ0, MKJ1, MKJ3, MKJ4

Series MKJ5

Series MKJ0, MKJ3, MKJ4, MKJ5

Series MKJ0, MKJ3, MKJ4

Series MKJ5

Series MKJ0, MKJ3, MKJ4

SHELL SIZE & CONTACT ARRANGEMENT

5-3

6-1

6-4

6-6

6-7

6-23

7-1

7-10

7-25

8-1

8-2

8-4

8-6

8-7

8-13

8-23

8-28

9-1

9-4

9-10

9-19

9-25

9-210

10-2

10-5

10-13

10-26

10-28

11-4

11-19

11-210

12-2

12-3

12-5

12-7

Size

Contacts

12-26

12-37

12-220

13-2

13-3

13-7

13-37

13-220

14-5

14-12

14-55

14-235

15-2

15-3

15-7

15-37

15-55

15-220

15-241

16-5

16-12

16-55

16-235

17-7

17-14

17-85

17-241

18-5

18-12

18-55

18-235

19-7

19-14

19-85

19-241

26 Size

37 Size

20 Size

2 Size

3 Size

7 Size

37 Size

20 Size

5 Size

12 Size

55 Size

35 Size

2 Size

3 Size

7 Size

37 Size

55 Size

20 Size

41 Size

5 Size

12 Size

55 Size

35 Size

7 Size

14 Size

85 Size

41 Size

5 Size

12 Size

55 Size

35 Size

7 Size

14 Size

85 Size

41 Size

Contacts

Series MKJ5

Series MKJ0, MKJ3, MKJ4

Series MKJ1

Series MKJ3, MKJ4

Series MKJ5

Series MKJ0, MKJ3, MKJ4

Series MKJ5

Series MKJ3, MKJ4

Series MKJ1

Series MKJ5

CONTACT STYLE

P - Pin, Crimp, Removale (For Class A & B only)

S - Socket, Crimp, Removable (For Class A & B only)

A - Pin, PC Tail, .062 Extension (For Class C through G only)

B - Pin, PC Tail, .109 Extension (For Class C through G only)

C - Socket, PC Tail, .062 Extension (For Class C through G only)

D - Socket, PC Tail, .109 Extension (For Class C through G only)

E - Pin, Solder Cup (For Class C through G only)

F - Socket, Solder Cup (For Class C through G only)

MKJ4 Series

Omit for Single Key/Keyway

A - Normal

B - Clocking Position B

C - Clocking Position C

D - Clocking Position D

E - Clocking Position E

F - Clocking Position F

A - Normal

B - Clocking Position B

C - Clocking Position C

D - Clocking Position D

E - Clocking Position E

F - Clocking Position F

SHELL CLOCKING (POSITION)

MKJ0 Series

N - Normal

X - Clocking Position X

Y - Clocking Position Y

Z - Clocking Position Z

A - Normal

B - Clocking Position B

C - Clocking Position C

D - Clocking Position D

E - Clocking Position E

F - Clocking Position F

N - Normal

X - Clocking Position X

Y - Clocking Position Y

Z - Clocking Position Z

150° -

75° -

95° -

140° -

75° -

95° -

150° -

75° -

95° -

140° -

75° -

95° -

210°

230°

275°

210°

230°

275°

210°

MKJ1 Series

MKJ3 Series

150° -

75° -

95° -

140° -

75° -

95° -

150° -

75° -

95° -

140° -

210°

230°

275°

210°

230°

275°

MKJ5 Series

MODIFICATION CODE

F0 - Less Contacts (“F0” not stamped on the connector, but must

be included on the P.O.)

Capacitance Codes (pF)

A - 19,000 - 28,000

D - 4,000 - 6,000

F - 400 - 650

B - 16,000 - 22,500

E - 1,650 - 2,500

G - 200 - 300

C - 9,000 - 16,500

518 - Class “C” PC style back potted receptacle connectors

with water immersion testing.

Consult factory for other modification codes