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Tel : 82-32-817-4325 Resistors And Fax : 82-32-817-4329 Resistive Applications Website : http://www.raraohm.com Email : sg@raraohm.com PTC Heater PTC or “Positive Temperature Coeffici ent of Resistance” heaters are safe and reliable thermistors made of functional semiconductor materials. As the temperature increases beyond the Tc point, the resistance goes down and the temperature falls below Tc point. Then the resistance increases again. This kind of effect is called the “PTC domino effect”. ■ GENERAL SPECIFICATIONS Model Wattage Rating Resistance Max Current Surface Temperature YB80- 240/150/021 1 220V 3.7W (220V, 0.017A) 500~2KΩ (at 25°C) 220V not more than 2A 85±10°C ■ CHARACTERISTICS Insulation Resistance DC500V, 20MΩ Minimum Withstanding Voltage AC 3750V for 2min.; Max. leakage current : 1mA Life cycle test ±10% performance change Apply 220V for 2000min ■ DIMENSIONS *Lead wire pipe : Plastic Ø1.5, Length 25±2mm *Power lead wire : UL1332 Black color, 22AWG *Lead wire strength : 1.5kgf for 1min ■ SURFACE TEMPERATURE Increase versus voltage Increase versus time at Rated Voltage