Leaded Thermistors Interchangeable Thermistor KT Series Standard Precision Interchangeable Thermistors Description Littelfuse precision interchangeable thermistors are low cost, highly accurate, stable devices designed specifically for temperature sensing and control applications. They are particularly suited for uses where their precision interchangeability eliminates the necessity for costly individual circuit calibration. Options * Non-standard * Special encapsulants or probe housings resistance values and tolerances * Special lead materials and lengths Features Dimensions EPOXY COATING B A * * * * KYNAR INSULATED WIRE C High accuracy Fast thermal response Low cost Small size * * * * Epoxy encapsulated High stability Long life R/T Curve-matched Part Numbering System D KT 10 2 J 2 Dimensions shown in inches. A A 0.250" Nom B 0.250" NOM B C 30 AWG (0.010") 0.095" MAX 30 AWG 0.010" Series D C 1.5" 0.250" 0.095" Max Resistance @ 25C Base Value D 1.5" 0.250" No Significance R-T Curve Multiplier, power of 10 Ex. 102 = 10 x 102 = 1,000 "KS" & "KT" SERIES 0.250" NOM 30 AWG (0.010") KYNAR INSULATED WIRE Note: Not all combinations of Part Number codes are available. Contact Littelfuse for details. EPOXY COATING 0.095" MAX 1.5" .250" (c) 2018 Littelfuse, Inc. Revised: February 26, 2018 Specifications are subject to change without notice. 1 littelfuse.com Leaded Thermistors Interchangeable Thermistor KT Series Standard Precision Interchangeable Thermistors Specifications Part Number Resistance Accuracy Ohms (C) @25C 0-70C Temperature R-T Coefficient Curve (% / C) @ 25C Beta (K) 0-50C Max. Power Rating (mW) Thermal Dissipation Time Constant, Constant, Nominal Max. - Still (mW/C) Air (seconds) Thermal Time Temperature Constant, Range Max. - Well (C) Stirred Oil (seconds) Storage & Operation Temp for Best L/T Stability (C) KT102J2 1000 0.2C J -4.4 3892 30 1 10 1 -80 to +150 -80 to +75 KT222J2 2252 0.2C J -4.4 3892 30 1 10 1 -80 to +150 -80 to +75 KT302J2 3000 0.2C J -4.4 3892 30 1 10 1 -80 to +150 -80 to +75 KT502J2 5000 0.2C J -4.4 3892 30 1 10 1 -80 to +150 -80 to +75 KT602J2 6000 0.2C J -4.4 4140 30 1 10 1 -80 to +150 -80 to +75 KT602J2 6000 0.1C J -4.4 3892 30 1 10 1 -80 to +150 -80 to +75 KT103G2 10000 0.2C G -4.04 3575 30 1 10 1 -80 to +150 -80 to +75 KT103J2 10000 0.2C J -4.4 3892 30 1 10 1 -80 to +150 -80 to +75 KT203J2 20000 0.2C J -4.4 4140 30 1 10 1 -80 to +150 -80 to +75 KT303J2 30000 0.2C J -4.4 3892 30 1 10 1 -80 to +150 -80 to +75 KT503J2 50000 0.2C J -4.4 3892 30 1 10 1 -80 to +150 -80 to +75 KT503R2 50000 0.2C R -4.68 3892 30 1 10 1 -80 to +150 -80 to +75 KT104R2 100000 0.2C R -4.68 3892 30 1 10 1 -80 to +150 -80 to +75 Disclaimer Notice - Information furnished is believed to be accurate and reliable. However, users should independently evaluate the suitability of and test each product selected for their own applications. Littelfuse products are not designed for, and may not be used in, all applications. Read complete Disclaimer Notice at: www.littelfuse.com/disclaimer-electronics (c) 2018 Littelfuse, Inc. Revised: February 26, 2018 Specifications are subject to change without notice. 2 littelfuse.com