o Part Numbering PTC Thermistors (POSISTORr) for Overcurrent Protection / for Overheat Sensing Lead Type (Part Number) PT GL 07 AR 220 M q w e r t y 3P51 A0 u i tResistance qProduct ID Product ID PT PTC Thermistors wSeries Expressed by three-digit alphanumerics. The unit is ohm (). The first and second figures are significant digits, and the third figure expresses the number of zeros which follow the two figures. If there is a decimal point, it is expressed by the capital letter "R." In this case, all figures are significant digits. Ex. Code Series Code Resistance FL for Overheat Sensing Lead Type R22 0.22 FM for Overheat Sensing with Lug-terminal 2R2 2.2 GL for Current Control (Over Current Protection * Inrush Current Suppression) Lead Type 220 22 yResistance Tolerance eDimensions Code Resistance Tolerance H 25% Nominal Body Diameter 4mm Series K 10% Nominal Body Diameter 5mm Series M 20% 07 Nominal Body Diameter 7mm Series N 30% 09 Nominal Body Diameter 9mm Series Q Special Tolerance 10 Nominal Body Diameter 10mm Series 12 Nominal Body Diameter 12mm Series uIndividual Specifications 13 Nominal Body Diameter 13mm Series Ex. 14 Nominal Body Diameter 14mm Series 16 Nominal Body Diameter 16mm Series 18 Nominal Body Diameter 18mm Series 20 Nominal Body Diameter 20mm Series Code Dimensions 04 05 rTemperature Characteristics Code Temperature Characteristics AR Curie Point 120C AS Curie Point 130C BA Curie Point 110C BB Curie Point 100C BC Curie Point 90C BD Curie Point 80C BE Curie Point 70C BF Curie Point 60C BG Curie Point 50C BH Curie Point 40C Code Individual Specifications 3P51 Lead Type, others iPackaging Code Packaging A* Ammo Pack B* Bulk