The WMZ12A-125LB39RMAU280B3.5-G6B is an through-hole mounted Positive Temperature Coefficient (PTC) thermistor manufactured by Tyohm, which is compliant with lead-free RoHS guidelines. This product has a cylindrical shape and is designed to fit a 12-14 AWG size hole for easy installation in its application. It offers 125 milliohm resistance at 25 degrees Celsius, and has a normal maximum temperature of 380 degrees Celsius. This thermistor is suitable for a wide variety of applications, from monitoring temperature in consumer electronics devices, automotive applications, and industrial equipment. It is also designed to withstand high thermal shock and EMI noise interference, as well as to be reliable through long periods of operation.