The S172D-12, S172D Series surface mount Centigrid® relay is an ultra miniature, hermetically sealed, armature relay for commercial applications. Its low profile height (0.47) and 0.1" grid spaced terminals make it an ideal choice where extreme packaging density and⁄or close PC board spacing are required. The specially formed leads are pre-tinned to make the relays ideal for all types of surface mount solder reflow processes. The S172D relay has an internal discrete silicon diode for coil transient suppression.