Nano SIM and SD card connectors with high mating cycle count

Würth Elektronik has introduced four new SMT-mountable card connectors, expanding its range with solutions for the smallest packages. The four Nano SIM and microSD card connectors feature high-quality workmanship with partially gold-plated contacts, and their impressive number of mating cycles ensures a very long service life.

The new card connectors are available in two mechanical versions each. The WR-CRD Nano SIM Card Connector Push-Push features the familiar spring mechanism, whereby the card is pressed deeper into the slot to release the mechanism. It can be actuated at least 3,000 times. The WR-CRD Nano SIM Card Connector Hinge features a mechanism that withstands at least 5,000 mating cycles.

The microSD cards are available in two versions: WR-CRD MicroSD Card Connector Push-Pull and WR-CRD MicroSD Card Connector Push-Push. The Push-Pull version, which holds the card in the connector by friction alone, withstands 5,000 mating cycles. The company’s Push-Push version featuring card detection achieves a durability of 10,000 mating cycles.

Besides telecommunications applications, SIM cards also play a major role in the IoT, as decentralised IoT devices and sensors often utilise mobile networks to connect to the internet. SD cards usually serve as exchangeable local storage media for these devices. To address the demands of industrial applications, the company ensures a robust design for its card connectors. The liquid crystal polymer insulating material conforms with the UL94 V-0 flammability class, and the operating temperature range extends from -25C to +85C – with one version of the WR-CRD MicroSD Card Connector Push-Push even rated for -40C to +85C.