JAE Releases MX81 Series of Compact Connectors for Automotive Applications

MX81 Series Unsealed Miniature Connector for Automotive

November 21, 2023

JAE has released the MX81 Series of non-waterproof compact connectors for connecting in-vehicle electronic devices such as ECUs and sensors. This series employs the same socket terminals as the currently available MX80 Series of waterproof connectors, allowing the same terminals and crimp tools to be used for a broad range of waterproof and non-waterproof areas of the vehicle.

Due to the increase in user experience features, the spread of ADAS, and electrification, the number of ECUs and electronic devices mounted in the interiors of vehicles is increasing. This is driving the need for a larger amount of compact devices and connectors to fit in the limited space. At the same time, the use in automotive applications require these connectors to have high contact reliability and robustness to ensure safe and long term use.

In light of this situation, JAE has developed the MX81 Series of connectors, which use standard automotive terminal designs (terminal tab size of 0.64 mm and contact pitch of 2.54 mm), but are more compact, at approximately 60% of the size of existing JAE products.
This product has been evaluated for automotive applications according to the USCAR-2* standard and has been confirmed to have high contact reliability and robustness. The socket connector has a simple one-piece design with a hinged retainer that allows detection of half inserted terminals. There is also a clear audible click to help confirm complete mating. These functions prevent incomplete assembly and contribute to improving customer workability.

We plan to continue to expand the MX81 and MX80 Series by increasing the number of pin count options, adding cable in-line connectors, and other variations, in order to meet the diverse needs of our customers.

*USCAR:United States Council for Automotive Research


  • 0.64 mm tab size which is standardized by ISO/JASO/EWCAP/VDA
  • Employs the same socket terminals as the waterproof MX80 Series
  • Socket housing is one-piece, using a hinged retainer structure
  • Pin headers are compatible with through-hole reflow soldering
  • UL94 V-0 materials are used in the housings for pin headers
  • Tested to USCAR-2 standard
  • Terminal pitch is 2.54 mm, allowing connection with standard pin contacts
  • Different mating key codes are available

Applicable Markets

Various ECUs, sensors, lighting, and other in-vehicle applications

General Specifications

Number of Contacts 2,4 positions
Contact Pitch 2.54mm
Operating −40°C to 125°C
Applicable Wires 0.13 to 1.0 mm2 (wire examples: FLRY-A/B, AESSX)
Rated Current
(for 80°C ambient
Wire size: 0.13 mm2: 4.5 A for 2 positions, 4.1 A for 4 positions
Wire size: 0.35 mm2: 6.7 A for 2 positions, 5.5 A for 4 positions
Wire size: 1.0 mm2: 9.7 A for 2 positions, 8.5 A for 4 positions
Dielectric AC 500 V (one minute)


Socket Connector

Component Material/Finish
Contact Copper alloy/Tin plating
Housing PBT

Angle Pin Header

Component Material/Finish
Contact Copper alloy/Tin plating
Housing PPS
Socket Connector Angle Pin Header Pin In-line Connector
(In Development)
MX81Series image
MX81Series image
MX81Series image

Information and details given here are as of the date of publication. Please note that the details may be changed.