KW203J2 Littelfuse

Leaded Thermistors Interchangeable Thermistor KW Series 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 High accuracy Epoxy encapsulated Fast thermal response High stability Low cost Long life EPOXY B COATING KYNAR Small size R/T Curve-matched A INSULATED WIRE C Part Numbering System D KW 1 0 2 J 2 Series No Significance Dimensions shown in inches. A B C D R-T Curve Resistance 25C A B C D Base Value 0.250 30 AWG 0.095 1.5 ( ) 0.010 NOM MAX 0.250 0.250 30 AWG 0.095 1.5 Multiplier, power of 10 2 Nom 0.010 Max 0.250 Ex. 102 = 10 x 10 = 1,000 Note: Not all combinations of Part Number codes are available. Contact Littelfuse for details. KW SERIES EPOXY COATING 0.250 ( ) 28 AWG 0.013 KYNAR NOM INSULATED WIRE 0.095 MAX 1.5 0.250 2021 Littelfuse, Inc. Revised: March 23, 2021 1 littelfuse.com Specifications are subject to change without notice. Leaded Thermistors Interchangeable Thermistor KW Series Precision Interchangeable Thermistors Specifications Thermal Thermal Storage & Temperature Dissipation Time Time Resistance Accuracy Temperature Operation Part R-T Coefficient Beta (K) Constant, Constant, Constant, Ohms (C) Rating Temp for Best Number Curve (% / C) 0-50C Nominal Max. - Still Max. - Well 25C 0-70C L/T Stability (C) 25C (mW/C) Air Stirred Oil (C) (seconds) (seconds) KW102J2 1000 0.5C J -4.4 3892 1 10 1 -80 to +135 -80 to +120 KW222J2 2252 0.5C J -4.4 3892 1 10 1 -80 to +135 -80 to +120 KW302J2 3000 0.5C J -4.4 3892 1 10 1 -80 to +135 -80 to +120 KW502J2 5000 0.5C J -4.4 3892 1 10 1 -80 to +135 -80 to +120 KW602J2 6000 0.5C J -4.4 3892 1 10 1 -80 to +135 -80 to +120 KW103G2 10000 0.5C G -4.04 3575 1 10 1 -80 to +135 -80 to +120 KW103J2 10000 0.5C J -4.4 3892 1 10 1 -80 to +135 -80 to +120 KW203J2 20000 0.5C J -4.4 3892 1 10 1 -80 to +135 -80 to +120 KW303J2 30000 0.5C J -4.4 3892 1 10 1 -80 to +135 -80 to +120 KW503J2 50000 0.5C J -4.4 3892 1 10 1 -80 to +135 -80 to +120 KW503R2 50000 0.5C R -4.68 4140 1 10 1 -80 to +135 -80 to +120 KW104R2 100000 0.5C R -4.68 4140 1 10 1 -80 to +135 -80 to +120 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 2021 Littelfuse, Inc. Revised: March 23, 2021 2 littelfuse.com Specifications are subject to change without notice.