AC Protection & Motor Control in HVAC Solutions

Littelfuse AC Protection and Motor Control in HVAC Solutions are essential to improve energy efficiency in commercial and industrial buildings. These solutions include fuses, surge protection devices, voltage monitors, transducers, sensors, and time delay relays. Littelfuse AC Protection and Motor Control in HVAC products are designed for control units, rectifiers, inverters, communication interfaces, and user interfaces.

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Qty. RoHS ECAD Model Series
B Parameter
Resistance
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Mounting Style
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Minimum Operating Temperature
Maximum Operating Temperature
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Littelfuse NTC (Negative Temperature Coefficient) Thermistors NTC THERMISTOR 2K OHM 10% MELF
Datasheet
459In Stock
Min.: 1
Mult.: 1

SM 3419 K 2 kOhms 10 % PCB Mount SMD/SMT - 55 C + 220 C MiniMELF-2 0.06 in 0.135 in 0.06 in 0.06 in Bulk
Littelfuse NTC (Negative Temperature Coefficient) Thermistors 1K OHM +/-10%
Datasheet
691In Stock
Min.: 1
Mult.: 1

SM 2941 K 1 kOhms 10 % PCB Mount SMD/SMT - 55 C + 220 C 0.06 in 0.135 in 0.06 in 0.06 in Bulk
Littelfuse NTC (Negative Temperature Coefficient) Thermistors NTC THERMISTOR 30K OHM 2% LUG
Datasheet
6In Stock
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 NTC THERMISTOR 1M OHM 10% MELF
Datasheet
118In Stock
Min.: 1
Mult.: 1

SM 4140 K 1 mOhms 10 % PCB Mount SMD/SMT - 55 C + 220 C MiniMELF-2 0.06 in 0.135 in 0.06 in 0.06 in Bulk
Littelfuse NTC (Negative Temperature Coefficient) Thermistors THERMISTOR, U.S. SENSOR
Datasheet
349In Stock
Min.: 1
Mult.: 1

SM 3892 K 30 kOhms 10 % PCB Mount SMD/SMT - 55 C + 220 C MiniMELF-2 0.06 in 0.135 in 0.06 in 0.06 in
Littelfuse NTC (Negative Temperature Coefficient) Thermistors 10K OHM +/-10%
Datasheet
557In Stock
Min.: 1
Mult.: 1

SM 3892 K 10 kOhms 10 % PCB Mount SMD/SMT - 55 C + 220 C 0.06 in 0.135 in 0.06 in 0.06 in Bulk
Littelfuse NTC (Negative Temperature Coefficient) Thermistors NTC 10K OHM +/-10%
Datasheet
3.610In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 2.500

SM 3892 K 10 kOhms 10 % PCB Mount SMD/SMT - 55 C + 220 C 0.06 in 0.135 in 0.06 in 0.06 in Reel, Cut Tape, MouseReel
Littelfuse NTC (Negative Temperature Coefficient) Thermistors THERMISTOR, U.S. SENSOR
Datasheet
258In Stock
Min.: 1
Mult.: 1

SM 3419 K 5 kOhms 10 % PCB Mount SMD/SMT - 55 C + 220 C 0.06 in 0.135 in 0.06 in 0.06 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 2% RING LUG ASMBLY
Datasheet
101In Stock
Min.: 1
Mult.: 1

USUR1000 3892 K 10 kOhms 20 mW 2 % Ring Lug Wire Lead - 40 C + 125 C 0.215 in 6 in 0.28 in 0.615 in Bulk
Littelfuse NTC (Negative Temperature Coefficient) Thermistors THERMISTOR, U.S. SENSOR
Datasheet
2.309Expected 5/6/2026
Min.: 1
Mult.: 1

3892 K 10 kOhms 1 % PCB Mount SMD/SMT - 55 C + 220 C MiniMELF-2 0.06 in 0.135 in 0.06 in 0.06 in
Littelfuse NTC (Negative Temperature Coefficient) Thermistors CUSTOM TEMPERATURE SENSOR
Datasheet
Non-Stocked Lead-Time 12 Weeks
Min.: 1
Mult.: 1
3892 K 100 kOhms 1 % PCB Mount SMD/SMT - 55 C + 220 C MiniMELF-2 0.06 in 0.135 in
Littelfuse NTC (Negative Temperature Coefficient) Thermistors NTC THERMISTOR 4.7K OHM 10%
Datasheet
Non-Stocked Lead-Time 12 Weeks
Min.: 1.000
Mult.: 1.000

SM 3419 K 4.7 kOhms 10 % PCB Mount SMD/SMT - 55 C + 220 C MiniMELF-2 0.06 in 0.135 in 0.06 in 0.06 in Bulk
Littelfuse NTC (Negative Temperature Coefficient) Thermistors NTC THERMISTOR 50K OHM 5% LUG
Datasheet
Non-Stocked Lead-Time 3 Weeks
Min.: 1
Mult.: 1
USUR 3892 K 50 kOhms 20 mW 5 % Ring Lug Wire Lead - 40 C + 125 C 0.28 in 0.615 in Bulk
Littelfuse NTC (Negative Temperature Coefficient) Thermistors 500 OHM +/-10%
Datasheet
Non-Stocked Lead-Time 12 Weeks
Min.: 500
Mult.: 500

SM 2941 K 500 Ohms 10 % PCB Mount SMD/SMT - 55 C + 220 C 0.06 in 0.135 in 0.06 in 0.06 in Bulk
Littelfuse NTC (Negative Temperature Coefficient) Thermistors NTC THERMISTOR 1K OHM 10% MELF
Datasheet
Non-Stocked
Min.: 1
Mult.: 1

SM 3263 K 1 kOhms 10 % PCB Mount SMD/SMT - 55 C + 220 C MiniMELF-2 0.06 in 0.135 in Bulk
Littelfuse NTC (Negative Temperature Coefficient) Thermistors NTC THERMISTOR 10K OHM 10% MELF
Datasheet
Non-Stocked
Min.: 1
Mult.: 1

SM 3575 K 10 kOhms 10 % PCB Mount SMD/SMT - 55 C + 220 C MiniMELF-2 0.06 in 0.135 in Bulk
Littelfuse NTC (Negative Temperature Coefficient) Thermistors NTC THERMISTOR 100K OHM 0.5C MELF
Datasheet
Non-Stocked
Min.: 5.000
Mult.: 1
SM 3892 K 100 kOhms 0.5 C PCB Mount SMD/SMT - 55 C + 220 C 0.06 in 0.135 in
Littelfuse NTC (Negative Temperature Coefficient) Thermistors NTC THERMISTOR 100K OHM 10% MELF
Datasheet
Non-Stocked
Min.: 1
Mult.: 1

SM 4140 K 100 kOhms 10 % PCB Mount SMD/SMT - 55 C + 220 C MiniMELF-2 0.06 in 0.135 in Bulk
Littelfuse NTC (Negative Temperature Coefficient) Thermistors NTC THERMISTOR 2.186K OHM MELF
Datasheet
Non-Stocked
Min.: 1
Mult.: 1

SM 3320 K 2.186 kOhms 10 % PCB Mount SMD/SMT - 55 C + 220 C MiniMELF-2 0.06 in 0.135 in Bulk
Littelfuse NTC (Negative Temperature Coefficient) Thermistors NTC THERMISTOR 2.5K OHM 10%
Datasheet
Non-Stocked
Min.: 1
Mult.: 1

SM 2941 K 2.5 kOhms 10 % PCB Mount SMD/SMT - 55 C + 220 C MiniMELF-2 0.06 in 0.135 in Bulk
Littelfuse NTC (Negative Temperature Coefficient) Thermistors NTC THERMISTOR 250K OHM 10% MELF
Datasheet
Non-Stocked
Min.: 1
Mult.: 1

SM 4140 K 250 kOhms 10 % PCB Mount SMD/SMT - 55 C + 220 C MiniMELF-2 0.06 in 0.135 in Bulk