The TSM24B is a part of TI’s surge protection device family. The TSM24B robustly shunts up to 20 A of IEC 61000-4-5 fault current to protect systems from high power transients or lightning strikes. The TSM24B is rated to dissipate ESD strikes beyond the maximum level specified in the IEC 61000-4-2 international standard (±30-kV contact, ±30-kV air-gap). The TSM24B clamps during a surge event, keeping system exposure below 33 V (typical) at I PP = 20 A. Additionally, the TSM24B is available in a small leaded SOT-23 (DBZ) package, which is reduced in size by approximately 50 percent compared to the industry standard SMA package. The device is designed to have a minimal effect on the protected line due to extremely low device leakage.