MKJ4A1F9-19P Datasheet, PDF (31/66 Pages) ITT Industries – Selector Guide

MKJ Series Connectors
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Technical overview
The Trinity MKJ family of mini circular connectors provides approximate electrical and mechanical characteristics of larger and heavier
Military Standard Environmental connectors while reducing weight up to 71% and size up to 52%. All MKJ series connector’s shells
and jam nuts are available in high quality aluminum alloy or corrosion resistant steel per AMS-QQ-S 763. The MKJ series comes with
rear accessory thread or integral band platform for direct attachment of cable shield and overmold. The MKJ series of connectors come
with a variety of coupling mechanisms: threaded, breakaway, and bayonet. In addition, a Pogo Pin technology utilizing ITT’s unique
spring probe pin/touch pad contact system is available. The MKJ series receptacle comes with a variety of mounting options for both
crimp and PCB contacts including in-line, jam nut, front mount, and square flange mount, and flange mount. The MKJ0, MKJ1, MKJ3,
MKJ4, and MKJ5 feature a master key and 2 secondary keys for positive mating with 4 clocking positions available. The MKJ0 connec-
tor is ideal for everyday operations where size and weight are at a premium. The MJK1 connector uses a double start thread coupling
with 1/1/2 turns for a full mate and is ideal for harsh shock and vibration environments. The MKJ3 connector can be fully mated in a
1/4 turn. The MKJ4 connector provides a quick push to mate / pull to unmate disconnect mechanism for fast breakaway connections.
The MKJ5 connector utilizes a triple start thread and is fully mated in 1 turn, and is an ideal connector for harsh shock and vibration
environments and offers an internal coupling ratchet mechanism along with an EMI grounding spring.
Product Features
• High contact density: size 23 contacts accommodate
#22 - #28 wire and allowing 0.076 inch contact spacing
• Available with 3-85 rear release crimp or PCB contacts
• Master key with 2 secondary keys. 4 clocking positions available
• Significant weight and size reduction compared to traditional
Mil Standard environmental connectors
• Available in jam nut, in-line, and square flange rear crimp
receptacle versions. Jam nut and square flange PCB receptacle
versions
• Rear accessory thread or integral band platform for direct
attachment of cable shield or overmold
• Wire seal grommet for rear environmental sealing.
Pin fluorosilicone interfacial seal provides interface sealing
• Available with double start threads allowing full mating in
1.5 turns
• Available with quick push/pull breakaway mechanism utilizing
canted retention spring for quicker mating and demating
• Available with bayonet 1/4 turn locking mechanism
• Available with Pogo Pin technology utilizing ITT’s unique spring
probe pin/pad contact system
Applications
• Medical equipment: test and diagnostic
• Industrial equipment
• Commecial and militray aircraft electronics
• Unmanned aerial vehicles
• Missile systems
• Avionic systems
• Satellites
• Sensors
• Instrumentation
• Interconnections for helmets, weapons, battery packs,
night vision goggles, aircraft headsets, etc.
• Navigation and Telemetry equipment
• Ruggedized computers and hand held communications equipment
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