Mini SD card connector saves more space

Edited by the Electronicstalk editorial team Dec 2, 2004

The Hirose DM2B is a push to insert and push to eject Mini SD card connector.

Mini SD is a new memory card format that is smaller than a postage stamp.

This is currently the smallest removable memory format available and has recently been adopted by the SD Card Association as its ultra small form factor card.

SD cards measure 21.5mm long, 20mm wide and 1.4mm thick, occupy a footprint of 430mm2 and have a volume of 602mm3.

Compared with a standard SD card this saves more than 40% PCB area and more than 60% by volume.

If designers of mobile equipment want to take full advantage of these savings, in card space, then selecting the right connector is critical.

The Hirose DM2B is a push to insert and push to eject Mini SD card connector that ejects the card 4mm to allow users easy access on card removal.

When inserted the card is securely held in place but will allow the card to be removed, without damaging the connector, if a force of approximately 4N or more is applied.

The connector is 23.3mm wide, 21.1mm deep and 2.2mm thick.

With the card inserted the total depth is only 23.6mm, making it one of the smallest mini SD connectors available.

The card is securely held in three planes to give maximum security should the device be dropped, the card detect switch is normally open with the card inserted to minimise power consumption, DM2B has been tested for 10,000 mating cycles, is rated for operating at -25 to +85C, with the contacts rated at 0.5A.

DM2B is suitable for automatic placement and is a lead free product.