SMC SM15TY 1500W Transil™ STMicroelectronics SMC SM15TY 1500W Transil™ series protects sensitive automotive circuits against surges defined in ISO 7637-2 and against electrostatic discharges according to ISO 10605. The Planar technology makes it compatible with high-end circuits where low leakage current and high junction temperature are required to provide reliability and stability over time. STMicroelectronics SM15TY are packaged in SMC (SMC footprint per IPC 7531 standard).