The P4SMAJ51A_R1_00001 is a bidirectional Transient Voltage Suppressor (TVS) Diode manufactured by Panjit. It has a dual SMA (DO-214AC) package and is RoHS compliant. The part has an operating voltage of 82.4V, a clamping voltage of 56.7V, and a peak pulse power rating of 51V. It is used for protecting sensitive electronics from transients caused by lightning, electrostatic discharges, inductive switching, and power supply cross-regulation. The diode is suitable for use in a wide variety of applications including telecommunications, automotive, industrial control, and consumer electronics.