NTC (Negative Temperature Coefficient) Thermistors

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Thermistor Probes & Assemblies

Littelfuse Thermistor Probes and Assemblies offer various housings, including stainless steel, vinyl, plastic, and polyimide tubing. The Littelfuse portfolio features different types of probes and assemblies: straight/cylindrical, flanged, plastic, microprobes, laboratory-grade, surface temperature sensing, and threaded.

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Image	Part #	Mfr.	Description	Datasheet	Availability	Pricing (EUR) Filter the results in the table by unit price based on your quantity.	Qty.	Series	B Parameter	Resistance	Power Rating	Tolerance	Mounting Style	Termination Style	Minimum Operating Temperature	Maximum Operating Temperature	Package/Case	Diameter	Length	Width	Height	Packaging
NTC (Negative Temperature Coefficient) Thermistors 10K OHM 1% PROBE ASSEMBLY USP10975 Littelfuse 1: € 8,97 3 210In Stock	Mfr. Part No. USP10975 Mouser Part No 803-USP10975	Littelfuse	NTC (Negative Temperature Coefficient) Thermistors 10K OHM 1% PROBE ASSEMBLY Learn More about Littelfuse thermistor probes assemblies	Datasheet	3 210In Stock	€ 8,97 € 8,23 € 7,61 € 7,40 View € 7,16 € 7,02 € 6,82	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
NTC (Negative Temperature Coefficient) Thermistors 2.2K OHM .1% DEG C PROBE ASMB USP11493 Littelfuse 1: € 9,38 1 745In Stock	Mfr. Part No. USP11493 Mouser Part No 803-USP11493	Littelfuse	NTC (Negative Temperature Coefficient) Thermistors 2.2K OHM .1% DEG C PROBE ASMB Learn More about Littelfuse thermistor probes assemblies	Datasheet	1 745In Stock	€ 9,38 € 8,51 € 8,18 € 7,78 View € 7,03 € 6,49 € 6,48 € 6,17 € 6,07	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
NTC (Negative Temperature Coefficient) Thermistors NTC THERMISTOR 20K OHM 2% LUG USUR1000-203G-06 Littelfuse 1: € 11,46 28In Stock	Mfr. Part No. USUR1000-203G-06 Mouser Part No 576-USUR1000-203G-06	Littelfuse	NTC (Negative Temperature Coefficient) Thermistors NTC THERMISTOR 20K OHM 2% LUG Learn More about Littelfuse thermistor probes assemblies	Datasheet	28In Stock	€ 11,46 € 10,13 € 9,08 € 8,60 View € 8,20 € 7,72 € 7,28 € 7,16	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
NTC (Negative Temperature Coefficient) Thermistors NTC THERMISTOR 30K OHM 2% LUG USUR1000-303G-06 Littelfuse 1: € 8,59 1In Stock 50Expected 11/11/2026	Mfr. Part No. USUR1000-303G-06 Mouser Part No 576-USUR1000-303G-06	Littelfuse	NTC (Negative Temperature Coefficient) Thermistors NTC THERMISTOR 30K OHM 2% LUG Learn More about Littelfuse thermistor probes assemblies	Datasheet	1In Stock 50Expected 11/11/2026	€ 8,59	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
NTC (Negative Temperature Coefficient) Thermistors 10K OHM 1% PROBE ASSEMBLY USP10973 Littelfuse 1: € 3,92 1 595In Stock 50On Order	Mfr. Part No. USP10973 Mouser Part No 803-USP10973	Littelfuse	NTC (Negative Temperature Coefficient) Thermistors 10K OHM 1% PROBE ASSEMBLY Learn More about Littelfuse thermistor probes assemblies	Datasheet	1 595In Stock 50On Order	€ 3,92 € 3,52 € 3,36 € 3,18 View € 3,05 € 2,95 € 2,73 € 2,72	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
NTC (Negative Temperature Coefficient) Thermistors 10K OHM 1% PROBE ASSEMBLY USP10976 Littelfuse 1: € 4,39 913In Stock 2 000Expected 05/01/2027	Mfr. Part No. USP10976 Mouser Part No 803-USP10976	Littelfuse	NTC (Negative Temperature Coefficient) Thermistors 10K OHM 1% PROBE ASSEMBLY Learn More about Littelfuse thermistor probes assemblies	Datasheet	913In Stock 2 000Expected 05/01/2027	€ 4,39 € 3,95 € 3,71 € 3,55 View € 3,37 € 3,26 € 3,25 € 3,06 € 2,98	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
NTC (Negative Temperature Coefficient) Thermistors 10K OHM 1% PROBE ASSEMBLY USP7766 Littelfuse 1: € 10,35 185In Stock 350Expected 30/11/2026	Mfr. Part No. USP7766 Mouser Part No 803-USP7766	Littelfuse	NTC (Negative Temperature Coefficient) Thermistors 10K OHM 1% PROBE ASSEMBLY Learn More about Littelfuse thermistor probes assemblies	Datasheet	185In Stock 350Expected 30/11/2026	€ 10,35 € 9,06 € 8,56 € 8,26 View € 7,94 € 7,65 € 7,47 € 7,34	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
NTC (Negative Temperature Coefficient) Thermistors 10K OHM 5% PROBE TO220 TO103J2K Littelfuse 1: € 1,19 3 295In Stock	Mfr. Part No. TO103J2K Mouser Part No 803-TO103J2K	Littelfuse	NTC (Negative Temperature Coefficient) Thermistors 10K OHM 5% PROBE TO220 Learn More about Littelfuse thermistor probes assemblies	Datasheet	3 295In Stock	€ 1,19 € 1,14 € 1,07 € 1,01 View € 0,972 € 0,86	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
NTC (Negative Temperature Coefficient) Thermistors NTC Thermistor Probe USP10979 Littelfuse 1: € 10,25 178In Stock	Mfr. Part No. USP10979 Mouser Part No 803-USP10979	Littelfuse	NTC (Negative Temperature Coefficient) Thermistors NTC Thermistor Probe Learn More about Littelfuse thermistor probes assemblies	Datasheet	178In Stock	€ 10,25 € 9,31 € 8,76 € 8,52 View € 8,22 € 8,12 € 7,58 € 7,21 € 7,18	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
NTC (Negative Temperature Coefficient) Thermistors THERMISTOR, US SENSOR USP12837 Littelfuse 1: € 17,46 203In Stock	Mfr. Part No. USP12837 Mouser Part No 803-USP12837	Littelfuse	NTC (Negative Temperature Coefficient) Thermistors THERMISTOR, US SENSOR Learn More about Littelfuse thermistor probes assemblies	Datasheet	203In Stock	€ 17,46 € 15,93 € 15,36 € 14,42 View € 14,08 € 14,06 € 13,78 € 12,98	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
NTC (Negative Temperature Coefficient) Thermistors THERMISTOR, US SENSOR USP12840 Littelfuse 1: € 27,00 260In Stock	Mfr. Part No. USP12840 Mouser Part No 803-USP12840	Littelfuse	NTC (Negative Temperature Coefficient) Thermistors THERMISTOR, US SENSOR Learn More about Littelfuse thermistor probes assemblies	Datasheet	260In Stock	€ 27,00 € 24,76 € 23,93 € 22,92 View € 22,23 € 21,30	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
NTC (Negative Temperature Coefficient) Thermistors 10K OHM 1% PROBE ASSEMBLY USP7765 Littelfuse 1: € 6,70 1 593In Stock 674On Order	Mfr. Part No. USP7765 Mouser Part No 803-USP7765	Littelfuse	NTC (Negative Temperature Coefficient) Thermistors 10K OHM 1% PROBE ASSEMBLY Learn More about Littelfuse thermistor probes assemblies	Datasheet	1 593In Stock 674On Order On Order Ship Dates Mfr. No: USP7765 Stock: 1 593 Can Dispatch Immediately On Order: 636 Expected 11/11/2026 38 TBD Factory Lead Time: 21 Weeks	€ 6,70 € 6,05 € 5,81 € 5,51 View € 5,19 € 5,13 € 4,76	Min.: 1 Mult.: 1	USP	3892 K	10 kOhms		1 %	Ring Lug	Wire Lead	- 55 C	+ 105 C		0.16 in	13.3 in	0.4 in	1.3 in	Bulk
NTC (Negative Temperature Coefficient) Thermistors 10K OHM 1% PROBE ASSEMBLY USP10982 Littelfuse 1: € 2,47 821In Stock	Mfr. Part No. USP10982 Mouser Part No 803-USP10982	Littelfuse	NTC (Negative Temperature Coefficient) Thermistors 10K OHM 1% PROBE ASSEMBLY Learn More about Littelfuse thermistor probes assemblies	Datasheet	821In Stock	€ 2,47 € 2,25 € 2,05 € 2,00 View € 1,88 € 1,61 € 1,57 € 1,54	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
NTC (Negative Temperature Coefficient) Thermistors THERMISTOR, US SENSOR USP12836 Littelfuse 1: € 13,85 76In Stock 200Expected 09/12/2026	Mfr. Part No. USP12836 Mouser Part No 803-USP12836	Littelfuse	NTC (Negative Temperature Coefficient) Thermistors THERMISTOR, US SENSOR Learn More about Littelfuse thermistor probes assemblies	Datasheet	76In Stock 200Expected 09/12/2026	€ 13,85 € 12,60 € 12,13 € 11,58 View € 11,20 € 10,83 € 10,82 € 9,93	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
NTC (Negative Temperature Coefficient) Thermistors NTC THERMISTOR USP16673 Littelfuse 1: € 1,51 229In Stock 500Expected 16/11/2026	Mfr. Part No. USP16673 Mouser Part No 803-USP16673	Littelfuse	NTC (Negative Temperature Coefficient) Thermistors NTC THERMISTOR Learn More about Littelfuse thermistor probes assemblies	Datasheet	229In Stock 500Expected 16/11/2026	€ 1,51 € 1,44 € 1,34 € 1,26 View € 1,22 € 1,17 € 1,10	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
NTC (Negative Temperature Coefficient) Thermistors 100K OHM 2% RING LUG ASMBLY USUR1000-104G-06 Littelfuse 1: € 11,46 20In Stock	Mfr. Part No. USUR1000-104G-06 Mouser Part No 576-USUR1000-104G-06	Littelfuse	NTC (Negative Temperature Coefficient) Thermistors 100K OHM 2% RING LUG ASMBLY Learn More about Littelfuse thermistor probes assemblies	Datasheet	20In Stock	€ 11,46 € 10,12 € 9,07 € 8,59 View € 7,96 € 7,40 € 6,92 € 6,71	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
NTC (Negative Temperature Coefficient) Thermistors 10K OHM 1% PROBE TO220 TO103J2F Littelfuse 1: € 4,27 109In Stock 1 500Expected 02/11/2026	Mfr. Part No. TO103J2F Mouser Part No 803-TO103J2F	Littelfuse	NTC (Negative Temperature Coefficient) Thermistors 10K OHM 1% PROBE TO220 Learn More about Littelfuse thermistor probes assemblies	Datasheet	109In Stock 1 500Expected 02/11/2026	€ 4,27 € 3,83 € 3,66 € 3,40 View € 3,25 € 3,15 € 2,75 € 2,67	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
NTC (Negative Temperature Coefficient) Thermistors THERMISTOR, US SENSOR TO502J2J Littelfuse 1: € 1,62 539In Stock	Mfr. Part No. TO502J2J Mouser Part No 803-TO502J2J	Littelfuse	NTC (Negative Temperature Coefficient) Thermistors THERMISTOR, US SENSOR Learn More about Littelfuse thermistor probes assemblies	Datasheet	539In Stock	€ 1,62 € 1,54 € 1,45 € 1,41 View € 1,39 € 1,27 € 1,17 € 1,08	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
NTC (Negative Temperature Coefficient) Thermistors 10K OHM 1% PROBE ASSEMBLY USP10972 Littelfuse 1: € 5,43 161In Stock 650On Order	Mfr. Part No. USP10972 Mouser Part No 803-USP10972	Littelfuse	NTC (Negative Temperature Coefficient) Thermistors 10K OHM 1% PROBE ASSEMBLY Learn More about Littelfuse thermistor probes assemblies	Datasheet	161In Stock 650On Order On Order Ship Dates Mfr. No: USP10972 Stock: 161 Can Dispatch Immediately On Order: 150 Expected 11/11/2026 500 Expected 22/12/2026 Factory Lead Time: 14 Weeks	€ 5,43 € 4,88 € 4,69 € 4,45 View € 4,28 € 4,12 € 3,83 € 3,72	Min.: 1 Mult.: 1	USP	3892 K	10 kOhms		1 %	Off-Board	Wire Lead	- 55 C	+ 105 C		0.25 in	51.5 in	0.25 in	2 in	Bulk
NTC (Negative Temperature Coefficient) Thermistors 10K OHM 5% PROBE ASSEMBLY USP10997 Littelfuse 1: € 13,41 25In Stock	Mfr. Part No. USP10997 Mouser Part No 803-USP10997	Littelfuse	NTC (Negative Temperature Coefficient) Thermistors 10K OHM 5% PROBE ASSEMBLY Learn More about Littelfuse thermistor probes assemblies	Datasheet	25In Stock	€ 13,41 € 11,84 € 10,61 € 10,05 View € 9,31 € 8,66 € 8,10 € 7,59	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
NTC (Negative Temperature Coefficient) Thermistors THERMISTOR, U.S. SENS USP11491 Littelfuse 1: € 14,42 86In Stock	Mfr. Part No. USP11491 Mouser Part No 803-USP11491	Littelfuse	NTC (Negative Temperature Coefficient) Thermistors THERMISTOR, U.S. SENS Learn More about Littelfuse thermistor probes assemblies	Datasheet	86In Stock	€ 14,42 € 13,12 € 12,64 € 12,07 View € 11,62 € 11,01 € 10,00	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
NTC (Negative Temperature Coefficient) Thermistors 10K OHM 10% PROBE TO220 TO103J2J Littelfuse 1: € 1,62 13 635On Order	Mfr. Part No. TO103J2J Mouser Part No 803-TO103J2J	Littelfuse	NTC (Negative Temperature Coefficient) Thermistors 10K OHM 10% PROBE TO220 Learn More about Littelfuse thermistor probes assemblies	Datasheet	13 635On Order On Order Ship Dates Mfr. No: TO103J2J Stock: 0 On Order: 1 135 Expected 08/12/2026 6 500 Expected 01/03/2027 6 000 Expected 11/03/2027 Factory Lead Time: 20 Weeks	€ 1,62 € 1,54 € 1,45 € 1,39 View € 1,33 € 1,17 € 1,09 € 1,08	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
NTC (Negative Temperature Coefficient) Thermistors 10K OHM 1% PROBE ASSEMBLY USP10981 Littelfuse 1: € 21,59 550On Order	Mfr. Part No. USP10981 Mouser Part No 803-USP10981	Littelfuse	NTC (Negative Temperature Coefficient) Thermistors 10K OHM 1% PROBE ASSEMBLY Learn More about Littelfuse thermistor probes assemblies	Datasheet	550On Order On Order Ship Dates Mfr. No: USP10981 Stock: 0 On Order: 100 Expected 01/12/2026 100 Expected 09/12/2026 350 Expected 04/01/2027 Factory Lead Time: 13 Weeks	€ 21,59 € 19,91 € 18,97 € 18,38 View € 17,81 € 17,29 € 16,23	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
NTC (Negative Temperature Coefficient) Thermistors 10K OHM 2% RING LUG ASMBLY USUR1000-103G-06 Littelfuse 1: € 10,61 700On Order	Mfr. Part No. USUR1000-103G-06 Mouser Part No 803-USUR1000-103G-06	Littelfuse	NTC (Negative Temperature Coefficient) Thermistors 10K OHM 2% RING LUG ASMBLY Learn More about Littelfuse thermistor probes assemblies	Datasheet	700On Order On Order Ship Dates Mfr. No: USUR1000-103G-06 Stock: 0 On Order: 300 Expected 01/02/2027 150 Expected 15/02/2027 250 Expected 17/02/2027 Factory Lead Time: 16 Weeks	€ 10,61 € 9,55 € 8,60 € 8,49 View € 7,06 € 6,83 € 6,36 € 6,18	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
NTC (Negative Temperature Coefficient) Thermistors 10K OHM 1% PROBE ASSEMBLY USP10978 Littelfuse 1: € 22,18 256On Order	Mfr. Part No. USP10978 Mouser Part No 803-USP10978	Littelfuse	NTC (Negative Temperature Coefficient) Thermistors 10K OHM 1% PROBE ASSEMBLY Learn More about Littelfuse thermistor probes assemblies	Datasheet	256On Order On Order Ship Dates Mfr. No: USP10978 Stock: 0 On Order: 6 Expected 04/01/2027 50 Expected 15/02/2027 50 Expected 18/02/2027 150 Expected 09/03/2027 Factory Lead Time: 23 Weeks	€ 22,18 € 20,30 € 19,01 € 17,42 View € 17,23 € 16,93 € 16,92 € 15,80 Quote	Min.: 1 Mult.: 1	USP	3892 K	10 kOhms		1 %	Off-Board	Wire Lead	- 55 C	+ 105 C		0.25 in	24 in	0.562 in	0.88 in	Bulk