The WMZ12A-125L472MSP800B20-E5B is a PTC thermistor manufactured by Tyohm. It is a Through Hole RoHS compliant electronic part. The thermistor features an operating temperature range of -40°C to +105°C, a resistance range of 4.72K, and a tolerance rating of ±20%. It has a power rating of 800 mW and is able to withstand a voltage of up to 80V. This product is suitable for use in temperature sensing, over-current detection, inrush limiting, and self-resetting protection applications.