NTC Leadless Chips Thermometrics Thermistors Features NTC Type HM NTC Type NDU • Low cost, solid state temperature sensor • Designed for accurate temperature measurement, control and compensation • Point matched at 77°F (25°C) to ±5% or ±10% • Tight tolerances on resistance and B value • Suitable for use over range of -112°F to 302°F (–80°C to 150°C) • Operation up to 311°F (155°C) with excellent stability High sensitivity greater than –4%/°C at 77°F (25°C) • Small body size • Fast response • Suitable for automotive, HVAC and white goods • • Suitable for temperature measurement, control and compensation • Palladium Silver contacts suitable for soldering or conductive epoxy bonding • Sizes from 0.025 in x 0.025 in to 0.085 in x 0.085 in (0.63 mm x 0.63 mm to 2.15 mm x 2.15 mm) available • Not suitable for immersion in fluids or high humidity Amphenol Advanced Sensors Type HM Specifications Leadless chip thermistor Description T Top and bottom electrode, uncoated chip thermistors without leads. L W NTC Type HM dimensions Options Data Consult Thermometrics for availability of options • Other resistance values in the range of 100 Ω to 100 kΩ • Other tolerances • Other reference temperature • Gold electrodes suitable for wire bonding • Other sizes Thermal and Electrical Properties • • • Dissipation constant: (still air) 7 to 15 mW/K Thermal time constant: (still air) 10 to 45 seconds The thermal time constant and dissipation constant values are dependent upon the method of mounting. The above values represent the range of smallest to largest HM thermistor chips when soldering to an aluminum substrate 0.025 in (0.635 mm) thick using 2% silver solder.W Select appropriate part number below for resistance and temperature tolerance desired. R25°C Material System Width “W” in (mm) 2252 F 0.070 (1.778) 0.070 (1.778) 2252 F 0.085 (2.159) 3000 F 3000 Length “L” in (mm) Thick “T” in (mm) R25° ± 5% R25° ± 10% 0.010 (0.254) HM70NF232J HM70NF232K 0.085 (2.159) 0.015 (0.380) HM85NF232J HM85NF232K 0.060 (1.523) 0.060 (1.523) 0.010 (0.254) HM60NF302J HM60NF302K F 0.075 (1.904) 0.075 (1.904) 0.015 (0.380) HM75NF302J HM75NF302K 5000 F 0.050 (1.27) 0.050 (1.27) 0.010 (0.254) HM50NF502J HM50NF502K 5000 F 0.060 (1.523) 0.060 (1.523) 0.015 (0.380) HM60NF502J HM60NF502K 10000 F 0.035 (0.889) 0.035 (0.889) 0.010 (0.254) HM35NF103J HM35NF103K 10000 F 0.040 (1.016) 0.045 (1.1429) 0.015 (0.380) HM40NF103J HM40NF103K 10000 Y 0.045 (1.1429) 0.045 (1.1429) 0.010 (0.254) HM45NY103J HM45NY103K 10000 Y 0.055 (1.397) 0.055 (1.397) 0.015 (0.380) HM55NY103J HM55NY103K 30000 H 0.025 (0.635) 0.025 (0.635) 0.010 (0.254) HM25NH303J HM25NH303K 30000 H 0.030 (0.7619) 0.035 (0.889) 0.015 (0.380) HM30NH303J HM30NH303K 100000 Y 0.030 (0.7619) 0.030 (0.7619) 0.010 (0.254) HM30NY104J HM30NY104K 100000 Y 0.035 (0.889) 0.035 (0.889) 0.015 (0.380) HM35NY104J HM35NY104K Type NDU Specifications 0.5 in (12.7 mm) maximum Leadless chip thermistor 0.078 in (2 mm) maximum Description A range of leadless chip thermistors. 0.039 in (1 mm) maximum NTC Type NDU dimensions Options Data Other resistance values in the range shown; e.g., code NDU152C2R1 for 1500 W ±1% at 77°F (25°C) • Reference temperature in the range of 32°F (0°C) up to the maximum operating temperature • Resistance value outside the ranges shown with modified dimensions • • • • • Minimum operating temperature: -40°F (-40°C) Maximum operating temperature: See table below Resistance tolerance: ±3% or greater Electrode: Thick film silver Packaging/MOQ: 1000/box R25 Ω Material System B 25/85 K Maximum temp. °F (°C) Code R25 ± 3% Code R25 ± 5% Code R25 ± 10% 1000 2 3540 ± 1% 257 (125) NDU102C2R3 NDU102C2R5 NDU102C2R10 2000 2 3540 ± 1% 257 (125) NDU202C2R3 NDU202C2R5 NDU202C2R10 5000 2 3540 ± 1% 257 (125) NDU502C2R3 NDU502C2R5 NDU502C2R10 1000 2A 3627 ± 1% 257 (125) NDU102C2AR3 NDU102C2AR5 NDU102C2AR10 2000 2A 3627 ± 1% 257 (125) NDU202C2AR3 NDU202C2AR5 NDU202C2AR10 5000 2A 3627 ± 1% 257 (125) NDU502C2AR3 NDU502C2AR5 NDU502C2AR10 2700 1 3977± 0.75% 311 (155) NDU272C1R3 NDU272C1R5 NDU272C1R10 5000 1 3977± 0.75% 311 (155) NDU502C1R3 NDU502C1R5 NDU502C1R10 10000 1 3977± 0.75% 311 (155) NDU103C1R3 NDU103C1R5 NDU103C1R10 30000 1 3977± 0.75% 311 (155) NDU303C1R3 NDU303C1R5 NDU303C1R10 50000 1 3977± 0.75% 311 (155) NDU503C1R3 NDU503C1R5 NDU503C1R10 2700 3 3960± 1% 311 (155) NDU272C3R3 NDU272C3R5 NDU272C3R10 5000 3 3960± 1% 311 (155) NDU502C3R3 NDU502C3R5 NDU502C3R10 10000 3 3960± 1% 311 (155) NDU103C3R3 NDU103C3R5 NDU103C3R10 30000 3 3960± 1% 311 (155) NDU303C3R3 NDU303C3R5 NDU303C3R10 50000 3 3960± 1% 311 (155) NDU503C3R3 NDU503C3R5 NDU503C3R10 10000 4 3435 ± 1% 230 (110) NDU103C4R3 NDU103C4R5 NDU103C4R10 30000 4 3435 ± 1% 230 (110) NDU303C4R3 NDU303C4R5 NDU303C4R10 50000 4 3435 ± 1% 230 (110) NDU503C4R3 NDU503C4R5 NDU503C4R10 Amphenol Advanced Sensors www.amphenol-sensors.com © 2014 Amphenol Corporation. All Rights Reserved. Specifications are subject to change without notice. Other company names and product names used in this document are the registered trademarks or trademarks of their respective owners. AAS-920-323B-03/2014