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Amphenol SJT Series Connectors (MIL-DTL-38999 Type 1.5)

Amphenol SJT Series Connectors (MIL-DTL-38999 Type 1.5)

MINIATURE CONNECTOR QUALIFIED TO JAN1003

Amphenol’s SJT series of miniature MIL-DTL-38999 Type 1.5 circular connectors offer high-density contact arrangements. They are environmentally-sealed and have a wide operating temperature range. These connectors meet the requirements of VG96912, are qualified to JAN1003 and are NATO-standard. They are commonly called 38999 series 1.5. See our full list of specifications for Amphenol SJT series connectors in the table below.

Get shopping! Part numbers begin JN.

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Amphenol

FEATURES

AMPHENOL SJT SERIES FEATURES

  • Quick-Mating
    A three-point bayonet coupling system not only makes SJT’s quick-mating, but also provides an audible and tactile ‘’click’’ along with a visual verification of mating.

  • Shielded Interconnect
    The SJT range can be supplied with 360-degree EMI/RFI-shielding spring protection. These springs ground the barrel of the plug to the inside wall of the receptacle with a wiping action that offers effective protection from reception or transmission of electrical noise.

  • Many Contact Layouts and Styles
    SJT connectors come in a wide variety of contact sizes and layouts up to 128 contacts. Printed circuit board, fibre optic, thermocouple and coax style contacts are available for special applications.

  • Utilizes High-Quality Military Contacts
    The SJT range of connectors use the same crimp-style military contacts as the MIL-DTL-38999 connectors to provide reliable performance under rigorous conditions.

  • Corrosion-Resistant
    SJT’s are available with cadmium-over-nickel plating that passed 500-hour military salt spray corrosion tests.

MATERIALS & FINISHES

AMPHENOL SJT SERIES MATERIALS & FINISHES
Shell
Aluminum alloy
Bayonet Pins
Passivated stainless steel per QQ-S-763
Shell Plating
(Default) - Clear chromate over cadmium over electroless nickel per QQ-P-416
014 - Olive drab chromate over cadmium over electroless nickel per QQ-P-416
023 - Electroless nickel per QQ-N-290
005 - Hard, anodic, non-conductive in accordance with MIL-A-862
W52 - Olive drab zinc cobalt
Contacts
Copper alloy
Contact Plating
Gold-plated, 50 microinches per MIL-G-45204 type II, grade C, class I
Insulator
Hard dielectric wafer which contains metal retention tines for high-reliability retention of crimp contacts
Grommet & Seals
Silicone-based elastomer
Grounding Springs
Beryllium copper

ELECTRICAL DATA

AMPHENOL SJT SERIES ELECTRICAL DATA
Operating Voltage & 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 & Wire Accommodation (Test Amps)

Wire Size

22D

22MQ

22Q

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

Max. Millivolt Drop

22D

73

22M*

45

22*

73

20

55

16

49

12

42


* Inactive for new designs

MECHANICAL

AMPHENOL SJT SERIES MECHANICAL
Operating Temperature
(Default) Plating -65°C to 150°C (-85°F to 302°F)
014 Plating -65°C to 175°C (-85°F to 347°F)
023 Plating -65°C to 200°C (-85°F to 392°F)
005 Anodic (non-conductive) -65°C to 200°C (-85°F to 392°F)
W52 Plating -65°C to 175°C (-85°F to 347°F)
Sealing
Against sand, dust per MIL-STD-202 & ice resistance


Wire Sealing Range

Contact Size

Min. Inches

Max. Inches

Min. MM

Max. MM

22D

0.030

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

10

0.135

0.162

3.42

4.12

8 (Coax)

0.135

0.155

3.43

3.94

8 (Twinax)

0.124

0.134

3.15

3.40



Insulation Strip Length

Contact Size

Strip Length

22*, 22D or 22M*

.125 (3.18)

20

.188 (4.77)

16

.188 (4.77)

12

.188 (4.77)


All dimensions in inches (millimeters in parentheses)

Mating Life
500 cycles minimum
Salt Spray
Finish (default): 48-hour per MIL-STD-1344A method 1001 condition B
Finish 014: 500-hour per MIL-STD-1344A method 1001 condition C
Finish 023: 48-hour per MIL-STD-1344A method 1001 condition B
Finish 005: 500-hour per MIL-STD-1344A method 1001 condition C
Finish W52: 48-hour
Heat
Finish (default): 150°C (302°F)
Finish 014: 175°C (347°F)
Finish 023: 200°C (392°F)
Finish 005: 150°C (302°F)
Finish W52: 175°C (347°F)
Chemical Resistance
Lubricating oils, hydraulic fluids, coolants, deicing fluids per MIL-STD-1344A Method 1016 condition A-1
Sine Vibration
30g at ambient temperature with simulated accessory load
Random Vibration
49.5 grms at ambient temperatures
Shock
300g ±15% half-sine wave magnitude for 3 ±1 milliseconds
EMI-Shielding Effectiveness
100 MHz to 10 GHz - minimum attenuation of 50dB
Contact Type
Crimp, fibre optic, coax, twinax, or printed circuit
Number of Circuits
2 to 128
Contact Insertion
Rear-insertion/rear-extraction with simple plastic or high-quality metal hand tools.
Contact Retention
Per MIL-DTL-38999K tested to MIL-STD-1344A method 2007


Contact

Axial Load Newtons ±10%

Axial Load Pounds ±10%

22*, 22D, 22M*

44

10

20

67

15

16

111

25

12

111

25

Polarization
Three-point bayonet coupling, five keyways with optional master keyway rotations, note insert and four fixed minor keyways.
Approvals
In accordance with JAN1003 and VG96912


* Inactive for new designs
 
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