The SMAJ170A with 275V 189V 170V SMA TVS ROHS is a surface-mount transil diode manufactured by SMC Diode. It is designed to protect sensitive equipment against the damaging effects of transients, surges, or electrostatic discharges. The SMAJ170A offers excellent clamping capability, low dynamic resistance, and a fast response time for this type of diode. It has a long service life and is RoHS compliant. It is rated at a maximum of 275V and is designed to protect equipment operating from 189V to 170V.