Leaded Thermistors Glass Encapsulated Thermistor DO-41 Standard Series Glass Encapsulated Thermistors Description Littelfuse low cost glass encapsulated thermistors are manufactured using super stable NTC chips which are hermetically sealed in a glass (DO-41 diode style) package. The result is a device which exhibits excellent long term reliability and stability even when subjected to severe environmental or thermal conditions. Their uniform dimensions and axial lead configuration make them especially suitable for use with automatic insertion equipment. Options Non-standard Tape and Reel resistance values Packaging and tolerances Point matched at specified temperatures Dimensions Features GLASS BODY High temperature Excellent long-term A capability to +300C stability Hermetically sealed Tinned CSS Lead B glass package Wires are Solderable or Weldable Low cost C High voltage insulation Dimensions shown in inches. Part Numbering System A B C A B C 0.0256 0.003 Diam 0.110 0.170 10 1 B H 1 K 22 AWG TINNED CCS MAX MAX 0.02560.003 Dia 1.0 LONG MIN 0.110 0.170 22 AWG Tinned CCS Resistance 25C Max Max Resistance Tolerance 1.0 Long Min Base Value K = 10% GLASS ENCAPSULATED THERMISTORS Multiplier, power of 10 No Significance 1 Ex. 101 = 10 x 10 = 100 DO-41 Glass Package GLASS BODY R-T Curve 22 AWG (0.0256 0.003 DIA) TINNED CCS, 1.0 LONG MIN Note: Not all combinations of Part Number codes are available. Contact Littelfuse for details. 0.110 MAX 0.170 MAX 2021 Littelfuse, Inc. Revised: March 23, 2021 1 littelfuse.com Specifications are subject to change without notice. Leaded Thermistors Glass Encapsulated Thermistor DO-41 Standard Series Glass Encapsulated Thermistors Specifications Thermal Thermal Dissipation Time Time Resistance *Resistance Temperature Temperature Part R-T Beta (K) Constant, Constant, Constant, Ohms Tol. % Coefficient Rating Max. - Max. - Well Number Curve 0-50C Nominal 25C 25C (% / C) 25C (C) Still Air Stirred Oil (mW/C) (seconds) (seconds) 101BH1K 100 10 B -3.31 2941 3 8 2 -55 to +220 501FH1K 500 10 F -3.86 3419 3 8 2 -55 to +300 102FH1K 1000 10 F -3.86 3419 3 8 2 -55 to +300 202JH1K 2000 10 J -4.4 3892 3 8 2 -55 to +300 222JH1K 2252 10 J -4.4 3892 3 8 2 -55 to +300 302JH1K 3000 10 J -4.4 3892 3 8 2 -55 to +300 502JH1K 5000 10 J -4.4 3890 3 8 2 -55 to +300 203RH1K 20000 10 R -4.68 4140 3 8 2 -55 to +300 333RH1K 33000 10 R -4.68 4140 3 8 2 -55 to +300 *Resistance tolerances of 1%, 2%, and 5% are available upon request Packaging Packaging Option Packaging Code Standard Quantity Standard Tape and Reel -TR 5000 EIA-296 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.