Hirose has introduced a connector series for use with secure digital (SD) cards. These connectors have a profile of only 2,9 mm and are fully compliant with the requirements of SD, SDIO and MMC card interfaces.
The DM1 series offers standard or reverse options, both with push-to-insert and push-to-eject mechanisms. Standard features include write protection, card detect switches, and all are shielded with card ground contacts for use with SDIO cards.
A 'soft lock' retention feature allows the card to be accidentally removed without using the ejection mechanism, but avoids damage to the card or connector. This soft lock system will retain the card in place up to a force of approximately 4 Newtons. Four PCB retention tabs secure the connector on the PCB for additional strength as well as providing a grounding point. The connectors are designed for 10 000 mating cycles, with a contact resistance of 80 mΩ.
To simplify production line requirements, the connectors are supplied with location pegs and in tape and reel packaging ready for automatic surface mount placement.
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