The TE Connectivity 1903302-3 is a Secure Digital (SD) card connector and ejector designed for surface-mount, right-angle mounting with a reverse bottom-mount orientation. This means the card inserts from the bottom side of the PCB, which is a specific layout choice for space-constrained designs where the card slot needs to be on the underside of the board. It accepts standard SD cards and includes an integrated ejector mechanism for push-in, push-out card removal.
Key Features for the Board Layout
The reverse bottom-mount feature is the primary differentiator here — it places the card slot on the solder side of the board, which is less common than a top-mount. A board guide is included to help align the card during insertion, reducing wear on the contacts. The contacts are gold-plated, which is standard for SD connectors to ensure reliable contact over repeated insertion cycles.
Packaging and Sourcing
This part is listed as Active and RoHS Compliant, so it's a current-production item with no end-of-life concerns. The base product number is 1903302.