1SMB75CAT3

The 1SMB75CAT3 is a bidirectional transient voltage suppressor (TVS) diode from On Semiconductor, designed to protect voltage-sensitive components from high-voltage, high-energy transients. It features a working peak reverse voltage of 75 V, a maximum clamping voltage of 121 V at a peak pulse current of 4.9 A, and a peak power dissipation of 600 W (1 ms pulse). The device has a typical capacitance of 125 pF at 1 MHz and a fast response time of less than 1 ns. It is rated for ESD protection up to Class 3 (>16 kV) per Human Body Model and is UL 497B compliant for isolated loop circuit protection.

This TVS diode is suitable for general purpose applications, including communication systems, automotive electronics, numerical controls, process controls, medical equipment, business machines, and power supplies. It is packaged in a surface mount SMB (DO-214AA) case with a modified L-bend lead style, offering a compact footprint with good solderability. The operating temperature range is -65°C to 150°C, with a maximum DC power dissipation of 3.0 W at lead temperature 75°C (zero lead length) and 0.55 W at ambient temperature 25°C on FR-4 board.

The device is bidirectional, making it suitable for AC line protection, and it does not include power line protection. Compliance data indicates RoHS3 compliance, MSL level 1, and REACH unaffected, though these are unverified and should be confirmed with the manufacturer. The breakdown voltage range is not specified in the available data.