Fair and Honest Corporate Activities
Harmony with the Environment
Management of Intellectual Properties and Information
Management Policies
Financial Results

UHS-II Compatible microSD™ Card Connector ST50 Series Has Been Launched

UHS-II compatible microSD card connector ST50 Series has Been Launched by JAE electronics

JAE has developed the "ST50 Series" UHS-II compatible push-push type microSD card connector for compact devices that require removable storage medium such as smartphones, cameras, tablets and notebook PCs.

Background / Product Outline

MicroSD cards are widely used as an external storage medium for compact devices. However, recently high-speed reading and writing requirements are increasing to allow storage of large images and 4K video files, and also to install and run apps (applications) on smartphones.

Due to the increasing user demand, microSD cards compatible with the memory card standard UHS-II with maximum data writing speed up to 312MB/s, are becoming widespread.

The ST50 Series UHS-II microSD card connector is also backwards compatible with UHS-I microSD cards, and other existing microSD cards.

This product has a structure that helps to dissipate heat while also being slim and compact which contributes to flexibility of design.

Furthermore, it features good operability with long card eject length.

JAE will continue card connector development pursuing improvement in customer value.

* microSDTM is a trademark of SD Association.


  • Compact slim design, 16.3mm depth, 13.7mm width, 1.35mm height
  • Compatible with microSD card Ultra High Speed data transfer standard UHS-II.
    (Backwards compatible with UHS-I microSD card and other existing microSD cards)
  • Push-push type card eject method.
  • Includes card detection switch (normally-closed types)
  • Maintaining good operability with the long card eject length (3.0mm min.)
  • 8-point hold downs for heat-emission.

Applicable Markets

Smartphones, tablets, notebook PCs, video cameras and other compact portable devices.

General Specifications

No. of Contacts 17 pos.
Operating Temperature -25°C ~ + 85°C
Contact Resistance 100mΩ max. (initial)
Durability 5,000 times
Rated Current 0.5A
Rated Voltage 10V
Insulation Resistance 1000MΩ min. (initial)
Dielectric Withstanding Voltage AC500Vr.m.s for 1 minute

Materials and Finishes

Component Material / Finish
Contact Copper alloy / Au plating
Housing Heat-resistant plastic
Cover Frame Stainless steel
Detection Switch Copper alloy / Au plating
VDD2 Switch Copper alloy / Au plating
Eject Bar Heat-resistant plastic
Lock Stainless steel
Spring Stainless steel
Cam Follower Stainless steel

ST50 Series (For more details) >

ST50 Series image


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