Heat Pumps

Littelfuse provides a broad portfolio of components for heat pumps, including fuses, TVS diodes, gate drivers, and more. The heat pump market is growing quickly, driven by government initiatives to reduce greenhouse gas emissions and rising energy costs. With inverter-driven motors improving system efficiencies, heat pumps can now be used in a wide range of climates. Learn how Littelfuse technologies make heat pumps safer, more reliable, and more energy efficient. Heat pumps can be used in a wide range of climates due to the inverter-driven motors improving system efficiencies. These components are suitable for various applications such as energy management, security systems, HVAC systems, smoke detectors, and IoT-controlled appliances. Littelfuse offers protect, control, and sense technologies to improve buildings' reliability, safety, and energy efficiency.

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Qty. RoHS ECAD Model Series
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Littelfuse NTC (Negative Temperature Coefficient) Thermistors 2.2K OHM .1% DEG C PROBE ASMB
Datasheet
1,797In Stock
Min.: 1
Mult.: 1

USP 3892 K 2.252 kOhms 0.1 C Off-Board Wire Lead - 55 C + 105 C 0.225 in 12.58 in 0.225 in 0.58 in Bulk
Littelfuse NTC (Negative Temperature Coefficient) Thermistors NTC THERMISTOR 30K OHM 2% LUG
Datasheet
6In Stock
50Expected 29/05/2026
Min.: 1
Mult.: 1
USUR 3892 K 30 kOhms 20 mW 2 % Ring Lug Wire Lead - 40 C + 125 C 0.28 in 0.615 in Bulk
Littelfuse NTC (Negative Temperature Coefficient) Thermistors NTC THERMISTOR 20K OHM 2% LUG
Datasheet
48In Stock
Min.: 1
Mult.: 1

USUR 3892 K 20 kOhms 20 mW 2 % Ring Lug Wire Lead - 40 C + 125 C 0.28 in 6 in 0.28 in 0.615 in Bulk
Littelfuse NTC (Negative Temperature Coefficient) Thermistors 5K OHM 2% LUG
Datasheet
1In Stock
Min.: 1
Mult.: 1

USUR 3892 K 5 kOhms 20 mW 2 % Ring Lug Wire Lead - 40 C + 125 C 0.28 in 6 in 0.28 in 0.615 in Bulk

Littelfuse NTC (Negative Temperature Coefficient) Thermistors NTC THERMISTOR 1K OHM 2% LUG
Datasheet
55In Stock
Min.: 1
Mult.: 1

USUR 3892 K 1 kOhms 20 mW 2 % Ring Lug Wire Lead - 40 C + 125 C 0.28 in 0.615 in Bulk
Littelfuse NTC (Negative Temperature Coefficient) Thermistors THERMISTOR, US SENSOR
Datasheet
775In Stock
Min.: 1
Mult.: 1

USP 3892 K 10 kOhms 5 % Off-Board Wire Lead - 55 C + 125 C 0.25 in 3.625 in 0.25 in 0.375 in Bulk
Littelfuse NTC (Negative Temperature Coefficient) Thermistors 10K OHM 1% PROBE ASSEMBLY
Datasheet
3,414In Stock
Min.: 1
Mult.: 1

USP 3892 K 10 kOhms 1 % Off-Board Wire Lead - 55 C + 125 C 0.1 in 6 in 0.1 in 0.215 in Bulk
Littelfuse NTC (Negative Temperature Coefficient) Thermistors 10K OHM 1% PROBE ASSEMBLY
Datasheet
1,021In Stock
Min.: 1
Mult.: 1

USP 3892 K 10 kOhms 1 % Off-Board Wire Lead - 55 C + 105 C 0.164 in 50.75 in 0.164 in 0.787 in Bulk
Littelfuse NTC (Negative Temperature Coefficient) Thermistors 10K OHM 1% PROBE ASSEMBLY
Datasheet
1,971In Stock
Min.: 1
Mult.: 1

USP 3892 K 10 kOhms 1 % Off-Board Wire Lead - 55 C + 150 C 0.145 in 6 in 0.281 in 0.62 in Bulk
Littelfuse NTC (Negative Temperature Coefficient) Thermistors THERMISTOR, US SENSOR
Datasheet
128In Stock
Min.: 1
Mult.: 1

USP 3977 K 10 kOhms 1 % Off-Board Wire Lead - 55 C + 105 C 0.1772 in 9.1811 in 0.1772 in 1.1811 in Bulk
Littelfuse NTC (Negative Temperature Coefficient) Thermistors 10K OHM 1% PROBE ASSEMBLY
Datasheet
220In Stock
Min.: 1
Mult.: 1

USP 3892 K 10 kOhms 1 % Clip Mount Wire Lead - 55 C + 105 C 0.164 in 36.787 in 0.787 in 0.787 in Bulk
Littelfuse NTC (Negative Temperature Coefficient) Thermistors 10K OHM 1% PROBE TO220
Datasheet
774In Stock
Min.: 1
Mult.: 1

TO 3892 K 10 kOhms 1 % PCB Mount Radial - 55 C + 150 C TO-220-2 0.595 in 0.4 in 0.165 in Tube
Littelfuse NTC (Negative Temperature Coefficient) Thermistors 10K OHM 5% PROBE TO220
Datasheet
4,853In Stock
Min.: 1
Mult.: 1

TO 3892 K 10 kOhms 10 % PCB Mount Radial - 55 C + 150 C TO-220-2 0.595 in 0.4 in 0.165 in Tube
Littelfuse NTC (Negative Temperature Coefficient) Thermistors NTC Thermistor Probe
Datasheet
244In Stock
Min.: 1
Mult.: 1

USP 3892 K 10 kOhms 1 % Off-Board Wire Lead - 55 C + 105 C 0.25 in 14.25 in 0.314 in 2.25 in Bulk
Littelfuse NTC (Negative Temperature Coefficient) Thermistors 10K OHM 1% PROBE ASSEMBLY
Datasheet
348In Stock
Min.: 1
Mult.: 1

USP 3892 K 10 kOhms 1 % Off-Board Wire Lead - 55 C + 105 C 0.25 in 25.25 in 0.25 in 1.25 in Bulk
Littelfuse NTC (Negative Temperature Coefficient) Thermistors THERMISTOR, US SENSOR
Datasheet
495In Stock
Min.: 1
Mult.: 1

USP 3892 K 10 kOhms 1 % Threaded Wire Lead - 55 C + 125 C 0.3125 in 3.25 in 0.3125 in 0.25 in Bulk
Littelfuse NTC (Negative Temperature Coefficient) Thermistors 10K OHM 1% PROBE ASSEMBLY
Datasheet
909In Stock
Min.: 1
Mult.: 1

USP 3892 K 10 kOhms 1 % Off-Board Wire Lead - 55 C + 80 C 0.23 in 37.35 in 0.23 in 1.35 in Bulk
Littelfuse NTC (Negative Temperature Coefficient) Thermistors NTC THERMISTOR
Datasheet
76In Stock
250Expected 07/05/2026
Min.: 1
Mult.: 1

USP 3435 K 10 kOhms 1 % PCB Mount Radial - 30 C + 90 C 1.26 in 0.197 in 0.04 in Bulk
Littelfuse NTC (Negative Temperature Coefficient) Thermistors 100K OHM 2% RING LUG ASMBLY
Datasheet
105In Stock
Min.: 1
Mult.: 1

USUR1000 3892 K 100 kOhms 20 mW 2 % Ring Lug Wire Lead - 40 C + 125 C 15.621 mm 7.112 mm Bulk
Littelfuse NTC (Negative Temperature Coefficient) Thermistors 10K OHM 10% PROBE TO220
Datasheet
529In Stock
1,500Expected 02/07/2026
Min.: 1
Mult.: 1

TO 3892 K 10 kOhms 5 % PCB Mount Radial - 55 C + 150 C TO-220-2 0.595 in 0.4 in 0.165 in Tube
Littelfuse NTC (Negative Temperature Coefficient) Thermistors THERMISTOR, US SENSOR
Datasheet
597In Stock
Min.: 1
Mult.: 1

TO 3892 K 5 kOhms 5 % PCB Mount Radial - 55 C + 150 C TO-220-2 0.595 in 0.4 in 0.165 in Tube
Littelfuse NTC (Negative Temperature Coefficient) Thermistors 10K OHM 5% PROBE ASSEMBLY
Datasheet
36In Stock
Min.: 1
Mult.: 1

USP 3892 K 10 kOhms 5 % Off-Board Wire Lead - 55 C + 105 C 0.4375 in 6.56 in 0.4375 in 0.56 in Bulk
Littelfuse NTC (Negative Temperature Coefficient) Thermistors THERMISTOR, U.S. SENS
Datasheet
15In Stock
50Expected 23/02/2026
Min.: 1
Mult.: 1

USP 3892 K 10 kOhms 0.2 C Off-Board Wire Lead - 55 C + 150 C 0.125 in 26.5 in 0.125 in 2.5 in Bulk
Littelfuse NTC (Negative Temperature Coefficient) Thermistors 10K OHM .2% DEG C PROBE ASMB
Datasheet
37In Stock
350Expected 26/05/2026
Min.: 1
Mult.: 1

USP 3892 K 10 kOhms 0.2 C Off-Board Wire Lead - 55 C + 150 C 0.188 in 13.5 in 0.188 in 1.5 in Bulk
Littelfuse NTC (Negative Temperature Coefficient) Thermistors THERMISTOR, US SENSOR
Datasheet
81In Stock
200On Order
Min.: 1
Mult.: 1

USP 3892 K 10 kOhms 1 % Off-Board Wire Lead - 55 C + 125 C 0.02 in 12.15 in 0.02 in 0.15 in Bulk