ST51 Series microSD™ EXPRESS Card Connector

The JAE Electronics ST51 series high-speed microSD EXPRESS connector offers enhanced EMC and thermal performance

Image of JAE Electronics ST51 Series microSD™ EXPRESS Card ConnectorThe JAE Electronics ST51 series microSD EXPRESS-compatible card connector is designed to support the increasing need for faster data transfer and higher-performance memory interfaces in advanced ICT devices. Leveraging the PCIe®/NVMe® interface, the connector offers significantly faster read/write speeds than UHS-I and UHS-II cards and connectors.

Backward compatibility with all previous microSD cards is supported, though performance is limited to UHS-I speeds and signaling. The ST51 incorporates a robust push-push eject mechanism with large eject stroke from improved usability. It also features enhanced EMC countermeasures and an optimized structure for heat dissipation to ensure stable operation under high-speed conditions. Additional elements include a card detection switch, strong mechanical locking for vibration and shock resistance, and a durable multi-point hold-down structure. These attributes make the ST51 an excellent fit for next-generation devices requiring compact, high-speed removable memory.

Features
  • microSD EXPRESS-compatible connector
  • High‑speed PCIe/NVMe interface performance
  • Push-push card eject mechanism with large eject stroke
  • Card detection switch
  • Strong mechanical lock structure for vibration/shock resistance
  • Enhanced EMC performance and heat dissipation design
  • Multi-point hold-down structure
  • Misinsertion
  • Backward compatibility with UHS-I/UHS-II microSD cards

Applications

  • Expandable storage devices, such as game consoles, action cameras, drive recorders, drones, PCs, and more

microSDTM is a trademark of SD-3C LLC, PCIe® is a registered trademark of PCI-SIG. NVME® is a registered trademark of NVM Express, Inc.

ST51 Series microSD™ EXPRESS Card Connector

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Published: 2026-01-27