SR4220SM

The SR4220SM board-mount receptacle mates with all Datakey SlimLine™, Extended SlimLine, and RUGGEDrive™ memory tokens (see token datasheets for more details). The SR4220SM receptacle features a right-angle, board-edge design with surface-mount contacts. The receptacles can be pick-and-placed from their tray and are suitable for use in a reflow oven process.

All Datakey SlimLine receptacles feature “gold dome” contacts that perform reliably over a wear life of at least 50,000 insertion/removal cycles and employ a wiping mechanism to remove debris or build-up on the token’s contacts each time a token is inserted or removed. Also, SR4220SM receptacles include a detent mechanism that contributes to token retention and gives users tactile and audible confirmation when an inserted token is fully engaged. The token/receptacle system provides a Last-On/First-Off (LOFO) contact that is used by system designers to detect when a memory token has been inserted or removed (contact ATEK Access Technologies for token detection details for RUGGEDrive memory tokens).

The SR4220SM receptacle replaces the SR4220SMT receptacle. Both receptacles share the same PCB footprint; however, the SR4220SM receptacle contact tails are now roughly coplanar with the bottom of the receptacle body, whereas the SR4220SMT contact tails had an intentional toe-down angle.