Data connector JT - 38999

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Overview
The JT - 38999 Series II connectors are MIL-DTL-38999 Series II qualified, bayonet-coupling low-profile circular connectors designed for military and aerospace avionics. They combine low weight and compact dimensions with a wide range of contact arrangements to meet space- and weight-sensitive installations.

Key features

• Low-profile design for reduced envelope and weight savings
• 9 shell sizes (08 to 24)
• More than 50–60 contact arrangements available
• Multiple materials and platings, including RoHS & REACH compliant options

Applications

• Military avionics
• Commercial avionics
• Military vehicles
• C5ISR and battlefield communications

Product benefits

• Multiple receptacle styles: square flange, jam nut, in-line
• Quick bayonet coupling: full mating in a 1/4 turn of the coupling nut

Materials & platings

• Aluminum shells with finish options: olive drab cadmium, electroless nickel, black zinc nickel
• Composite shell variants available; RoHS & REACH compliant finishes offered

Contacts types & terminations

• Over 50 contact arrangements (up to 60+ referenced)
• Contact sizes from 22D to 12 (examples: sizes 12, 16, 20, 22D)
• Signal and power contact options
• Termination: crimp or PCB (PC tail)

Environmental characteristics

• Rated for 500 mating cycles
• Operating temperature range: -65°C to 175°C or 200°C depending on material and plating
• Corrosion/salt spray resistance: 48 to 500 hours depending on material/plating

Electrical characteristics

• Insulation resistance at ambient: 10^5 MΩ (as referenced)

Additional product details
The JT series is offered in metallic and composite shells to maximize weight and space savings. Optional grounding fingers on the plug shell provide EMI/RFI protection. Improved interfacial seals ensure reliable sealing around individual contacts. The series supports extensive customization to meet specific application requirements.

Technical specifications

• Standard: MIL-DTL-38999 Series II qualified
• Series / Model designation: JT - 38999 Series II
• Shell sizes: 08 to 24 (9 sizes)
• Contact arrangements: more than 50 (up to 60+ referenced)
• Contact sizes: range from 22D to 12 (examples: 12, 16, 20, 22D)
• Termination types: crimp, PCB (PC tail)
• Materials: aluminum shells; composite variants available
• Platings: olive drab cadmium, electroless nickel, black zinc nickel; RoHS & REACH options
• Coupling: bayonet (low-profile), quick coupling (1/4 turn)
• Receptacle styles: square flange, jam nut, in-line
• Mating cycles: 500
• Temperature rating: -65°C to 175°C or 200°C (depending on material/plating)
• Corrosion resistance (hours): 48 to 500 (depending on material/plating)
• Optional features: EMI grounding fingers on plugs, improved interfacial sealing