Surface-Mount Thermistors

Littelfuse Surface-Mount Thermistors offer a 0.7Ω to 500,000Ω resistance range and a maximum operating range of -55°C to +220°C. This Littelfuse portfolio includes end-banded chip thermistors, leadless top- and bottom-terminated chip thermistors, inrush current limiters (power thermistors), and more. These surface-mount modules are ideal for a wide variety of applications.

Results: 37
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Description Datasheet Availability Pricing (CHF) Filter the results in the table by unit price based on your quantity.
Qty. RoHS ECAD Model Series
B Parameter
Resistance
Power Rating
Tolerance
Mounting Style
Termination Style
Minimum Operating Temperature
Maximum Operating Temperature
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Diameter
Length
Width
Height
Packaging
Littelfuse NTC (Negative Temperature Coefficient) Thermistors NTC THERMISTOR 100K OHM 0.5C MELF
Datasheet
5’274In Stock
Min.: 1
Mult.: 1

HM 3892 K 100 kOhms 0.5 % PCB Mount SMD/SMT - 55 C + 220 C MiniMELF-2 0.0603 in 0.135 in 0.0603 in 0.0603 in Bulk
Littelfuse NTC (Negative Temperature Coefficient) Thermistors THERMISTOR, US SENSOR
Datasheet
1’302In Stock
1’500Expected 8/12/2026
Min.: 1
Mult.: 1

WM 3892 K 10 kOhms 1 C 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 5K OHM 5% 0805 SMT
Datasheet
3’500In Stock
Min.: 1
Mult.: 1

KR 3550 K 5 kOhms 300 mW 5 % PCB Mount SMD/SMT - 40 C + 125 C 0805 (2012 metric) 0.0787 in 0.0492 in 0.05 in Bulk
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 C THERMISTOR 10K OHM 5% 0603 SMT
Datasheet
3’845In Stock
Min.: 1
Mult.: 1
3976 K 10 kOhms 5 % PCB Mount SMD/SMT - 40 C + 125 C 0603 (1608 metric) 0.063 in 0.0315 in 0.0395 in Bulk
Littelfuse NTC (Negative Temperature Coefficient) Thermistors NTC 10K OHM +/-1%
Datasheet
6’012In Stock
Min.: 1
Mult.: 1

MM 3892 K 10 kOhms 1 % PCB Mount SMD/SMT - 55 C + 220 C 0.053 in 0.075 in 0.053 in 0.049 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 NTC 100K OHM +/-1%
Datasheet
10In Stock
1’000Expected 8/19/2026
Min.: 1
Mult.: 1

MM 3892 K 100 kOhms 1 % PCB Mount SMD/SMT - 55 C + 220 C 0.053 in 0.075 in 0.053 in 0.049 in Bulk
Littelfuse NTC (Negative Temperature Coefficient) Thermistors NTC 20K OHM +/-1%
Datasheet
255In Stock
Min.: 1
Mult.: 1
MM 3892 K 20 kOhms 1 % PCB Mount SMD/SMT - 55 C + 220 C MicroMELF-2 0.053 in 0.075 in Bulk
Littelfuse NTC (Negative Temperature Coefficient) Thermistors NTC 10K OHM +/-10%
Datasheet
2’642In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 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
58In 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 NTC THRM CHIP 3750 10K 5% TR
Datasheet
3’219In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 3’500

Reel, Cut Tape, MouseReel
Littelfuse NTC (Negative Temperature Coefficient) Thermistors THERMISTOR US SENSOR
Datasheet
172In Stock
Min.: 1
Mult.: 1

BC 3892 K 10 kOhms 10 % PCB Mount SMD/SMT - 55 C + 150 C 0.04 in 0.04 in 0.015 in Bulk
Littelfuse NTC (Negative Temperature Coefficient) Thermistors THERMISTOR, U.S. SENSOR
Datasheet
5’000Expected 8/11/2026
MouseReel Available
Min.: 1
Mult.: 1
: 2’500

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 Reel, Cut Tape, MouseReel
Littelfuse NTC (Negative Temperature Coefficient) Thermistors NTC THERMISTOR 10K OHM 5% 0603 SMT
Datasheet
240Expected 9/10/2026
Min.: 1
Mult.: 1

RB 3435 K 10 kOhms 150 mW 5 % PCB Mount SMD/SMT - 40 C + 125 C 0603 (1608 metric) 0.063 in 0.0315 in 0.0395 in Bulk
Littelfuse NTC (Negative Temperature Coefficient) Thermistors THERMISTOR, US SENSO
Datasheet
3’493Expected 10/7/2026
Min.: 1
Mult.: 1

KR 4250 K 100 kOhms 300 mW 5 % PCB Mount SMD/SMT - 40 C + 125 C 0805 (2012 metric) 0.0787 in 0.0492 in 0.05 in
Littelfuse NTC (Negative Temperature Coefficient) Thermistors NTC THERMISTOR 1K OHM 5% 1206 SMT
Datasheet
250Expected 8/12/2026
Min.: 1
Mult.: 1

LR 3250 K 1 kOhms 400 mW 5 % PCB Mount SMD/SMT - 40 C + 125 C 1206 (3216 metric) 0.126 in 0.063 in 0.05 in Bulk
Littelfuse NTC (Negative Temperature Coefficient) Thermistors NTC THERMISTOR 10K O HM 0.5C MELF
Datasheet
Non-Stocked Lead-Time 12 Weeks
Min.: 2’500
Mult.: 2’500

HM 3892 K 10 kOhms 0.5 % PCB Mount SMD/SMT - 55 C + 220 C MiniMELF-2 0.0603 in 0.135 in Bulk
Littelfuse NTC (Negative Temperature Coefficient) Thermistors NTC THERMISTOR 10K OHM 10% MELF
Datasheet
Non-Stocked Lead-Time 12 Weeks
Min.: 1
Mult.: 1

MM 3892 K 10 kOhms 10 % PCB Mount SMD/SMT - 55 C + 220 C MicroMELF-2 0.053 in 0.075 in 0.053 in 0.049 in Bulk
Littelfuse NTC (Negative Temperature Coefficient) Thermistors THERMISTOR
Datasheet
Non-Stocked Lead-Time 12 Weeks
Min.: 10’000
Mult.: 10’000
: 10’000
RA 3900 K 10 kOhms 1 % PCB Mount SMD/SMT - 40 C + 125 C 0.0394 in 0.0197 in 0.028 in Reel
Littelfuse NTC (Negative Temperature Coefficient) Thermistors NTC THERMISTOR 10K OHM 5% 0603 SMT
Datasheet
Non-Stocked Lead-Time 12 Weeks
Min.: 4’000
Mult.: 4’000

RB 4000 K 10 kOhms 150 mW 5 % PCB Mount SMD/SMT - 40 C + 125 C 0603 (1608 metric) 0.063 in 0.0315 in 0.0395 in Bulk
Littelfuse NTC (Negative Temperature Coefficient) Thermistors NTC THERMISTOR
Datasheet
Non-Stocked Lead-Time 12 Weeks
Min.: 1
Mult.: 1

SB 3419 K 1 kOhms 10 % PCB Mount SMD/SMT - 55 C + 220 C MELF-2 0.096 in 0.135 in 0.06 in 0.096 in Bulk
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