The P6SMBJ120CA-AQ Diode TVS (Transient Voltage Suppressor) with 600W of power, a peak pulse power of 600W, a breakdown voltage of 133-148V, a current of 3.1A, a bidirectional polarity, a tolerance of ±5%, an SMB or Surface Mount package, and a reel,tape manufactured by Diotec Semiconductor is a component designed to protect sensitive electronic components and circuitry from voltage spikes or “transients.” It can be used in a wide range of applications, including power supplies, input protection, ESD protection, and surge protection.