Home ITT Cannon MIL-DTL-38999 Connectors KJ Series MIL-DTL-38999 Series II Connectors

ITT Cannon KJ Series MIL-DTL-38999 Series II Connectors

ITT Cannon KJ MIL-DTL-38999 Series II Connectors



INTERMATEABLE WITH SOURIAU CONNECTORS AND ALL
MIL-DTL-38999 SERIES II

ITT Cannon KJ series MIL-DTL-38999 series II connectors offer high-density contact arrangements in a light-weight miniature circular connector. ITT Cannon KJ series connectors have a quick-mating three-point bayonet coupling, are environmentally-sealed and operate across a wide temperature range. ITT Cannon KJ series mil spec connectors were originally designed for military vehicles and are now industry standard aerospace and military connectors. ITT Cannon’s KJ series is intermateable with Souriau connectors and all MIL-DTL-38999 connectors. Mil spec part number prefixes include: MS27472, MS27473, MS27474, MS27484, MS27497, MS27499, MS27500, MS27508, and MS27513. For full product details on the KJ series MIL-DTL-38999 series II, please see the specifications below.
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FEATURES

ITT CANNON KJ SERIES FEATURES

  • High Reliability
    MIL-DTL-38999 Series II - KJ style connectors are used in performance aircraft that demand reliable connections in some of the most rigorous environments. The connectors must perform flawlessly under wide temperature ranges, high vibrations, and be resistant to a vast array of contaminants.

  • Low-Profile Connector Design
    KJs require a fraction of the space needed to mate than most of the other high performance connectors.

  • Light Weight
    Today’s aircraft designs require connectors that are very light weight. Saving weight on connector systems allows the aircraft to carry more fuel, maximizing its range or payload carrying capacity.

  • Operates At Extreme Temperatures
    For standard applications, KJs come with crimp-style military contacts designed to resist bending and provide reliable performance under the most rigorous conditions.

  • High Density Connectors
    KJ connectors offer up to 128 contacts per connector. Ideally suited for the demands of today’s digital electronics that are used on aircraft, advanced robotics, and critical industrial equipment.

  • Quick-Mating Coupling Systems
    Three-point bayonet coupling nuts provide fast, one-third-of-a-turn connector mating. Mating is easily verified with an audible and tactile “click” and a bayonet pin sighting hole located in the coupling nut.

  • Broad Range Of Military and Commercial Accessories
    Many military standard endbells to MIL-C-85049 specifications and a wide array of cable termination style are available. Straight, 45 and 90 degree endbells come in many styles from standard clamp to shielded environmentally-sealed and everything inbetween.

  • Contact Retention Clips
    KJs utilize all metal contact retention tines which assure the highest level of serviceability and unparalleled contact retention.

  • MIL-DTL-38999 Approved
    KJs are fully intermatable and intermountable with all other MIL-DTL-38999 Series II connectors.



MATERIALS & FINISHES

ITT CANNON KJ SERIES MATERIALS & FINISHES
Shell
Aluminum alloy
Plating
W - Olive drab chromate over cadmium over electroless nickel per QQ-P-416
F - (N) electroless nickel per QQ-N-290
Contacts
Copper alloy
Platings
Gold plate, 50 microinches per MIL-G-45204 type II, grade C, class 1
Insulator
Hard plastic wafer which contains metal retention tines for high reliability retention of crimp contacts
Grommet & Seals
Silicone-based elastomer
Grommet & Springs
Beryllium copper (grounded plug only)


ELECTRICAL DATA

ITT CANNON KJ SERIES ELECTRICAL DATA
Contact Sizes
22D, 22M*, 22*, 16, 10 and 12
Operating Voltage
(Vac rms) & Test Voltage (Unmated Condition)

Service Rating

Test Voltages

N

M

I

II

Sea Level

1000

1300

1800

2300

100,000 feet

200

200

200

200



Current Rating by contact size and wire accomodations (Test Amps)

Wire Size

22D

22M*

22*

20

16

12

28

1.5

1.5

-

-

-

-

26

2.0

2.0

2.0

-

-

-

24

3.0

3.0

3.0

3.0

-

-

22

5.0

-

5.0

5.0

-

-

20

-

-

-

7.5

7.5

-

18

-

-

-

-

10.0

-

16

-

-

-

-

13.0

-

14

-

-

-

-

-

17.0

12

-

-

-

-

-

23.0



Contact Resistance of mated contacts end-to-end

Contact Size/Wire Size

Maximum Millivolt Drop

22D

73

22M*

45

22*

73

20

55

16

49

12

42


*Inactive for new designs

MECHANICAL

ITT CANNON KJ SERIES MECHANICAL
Operating Temperature
A Plating -65°C to 150°C (-85°F to 302°F)
B Plating -65°C to 175°C (-85°F to 347°F)
F (N) Plating -65°C to 200°C (-85°F to 392°F)
Sealing
Against sand, dust per MIL-STD-202 & ice

Wire Sealing Range

Contact Size

Minimum (Inches)

Maximum (Inches)

Minimum (mm)

Maximum (mm)

22D

0.0300

0.054

0.76

1.37

22M*

0.030

0.050

0.76

1.27

22*

0.034

0.060

0.86

1.52

20

0.040

0.083

1.02

2.11

16

0.065

0.109

1.65

2.77

12

0.097

0.142

2.46

3.61

8

0.135

0.155

3.43

3.74



Insulation Strip Length

Contact Size

Strip Length Inches (mm)

22*, 22D or 22M*

.125 (3.18)

20

.188 (4.77)

16

.188 (4.77)

12

.188 (4.77)


Mating Life
500 cycles minimum: 250 for plug with grounding fingers (KJG6)
Salt Spray
Finish A: 48 hour per MIL-STD-1344A method 1001 condition B
Finish B: 500 hour per MIL-STD 1344A method 1001 condition C
Finish F: 48 hour per MIL-STD-1344A method 1001 condition B
Heat
Finish A: 150°C (302°F)
Finish B: 175°C (347°F)
Finish F: 200°C (392°F) 1000 hours to MIL-STD-1344 method 1005
Chemical Resistance
Lubricating oils, hydraulic fluids, coolants, deicing fluids per MIL-STD-1344A Method 1016 condition a-1
Sine Vibration
Not applicable
Random Vibration
43.7 grms at ambient temperatures
Shock
300 grms ± 15% for 3 ±1 milliseconds per MIL-DTL-38999J 4.7.23
EMI Shielding Effectiveness
100 MHz to 10 GHz - minimum attenuation of 45 dB
Contact Type
Crimp, fiber optic, coax, twinax, or printed circuit
Number of Circuits
3 to 128
Contact Insertion
Insertion from rear of connector with simple plastic or high-quality metal hand tool. Extraction from rear with simple plastic or high-quality metal hand tools
Contact Retention
Per MIL-DTL-38999 tested to MIL-STD-1344A method 2007

Contact

Axial Load Newtons +/-10%

Axial Load Pounds +/-10%

22*, 22D or 22M*

44

10

20

67

15

16

112

25

12

111

25



Polarization
Three-point bayonet coupling, five keyways with optional master keyway rotations.
(Note: Insert and four minor keyways remain fixed.)
Approvals/Specifications
MIL-DTL-38999
* Inactive for new designs

CROSS SECTION

ITT CANNON KJ SERIES CROSS SECTION

 
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