The WMZ12A-75S200-350SU017B28-E5B with PTC Thermistors Through Hole RoHS is a positive temperature coefficient (PTC) thermistor manufactured by Tyohm. It is a through-hole, RoHS-compliant, thermal resistive device that has a resistance of 200 ohms (at 25°C), a maximum operating temperature of 350°C, and a positive temperature coefficient. It is a surface mountable thermistor that has an operating temperature range of -55°C to +150°C, and provides a resistance of 12.75 ohms at 125°C. The device can be used to measure and control temperature in a variety of applications, including HVAC systems, safety systems, and computer and industrial control systems.