NTC (Negative Temperature Coefficient) Thermistors

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AT & ET Thermistors

Semitec USA AT and ET Thermistors are available in a variety of resistance values, sizes, and termination styles. These high-precision thermal sensing devices have a maximum operating temperature of 90°C, 105°C, or 110°C. The AT series feature extremely small B-value tolerance and resistance while ensuring accurate temperature detection within ±0.3°C. They require no adjustment between the control circuit and the sensor when used as a temperature gauge. The ET thermistors are a smaller version of the AT series. The ET series is highly reliable and offers a fast response time. These thermistors are ideally suited for medical equipment and thermometers.

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Image	Part #	Mfr.	Description	Datasheet	Availability	Pricing (IDR) 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	Diameter	Length	Width	Height	Packaging
NTC (Negative Temperature Coefficient) Thermistors 100kohm 3% 104ET-1 Semitec 1: Rp22.198,66 170In Stock	Mfr. Part No. 104ET-1 Mouser Part No 954-104ET-1	Semitec	NTC (Negative Temperature Coefficient) Thermistors 100kohm 3% Learn More about Semitec atet	Datasheet	170In Stock	Rp22.198,66 Rp16.731,55 Rp13.374,23 Rp12.585,36 View Rp12.273,47 Rp10.310,45 Rp9.576,61 Rp8.806,08	Min.: 1 Mult.: 1	ET	4132 K	100 kOhms		3 %	PCB Mount	Radial	- 40 C	+ 90 C	1.5 mm	87 mm	1.5 mm	4 mm	Bulk
NTC (Negative Temperature Coefficient) Thermistors 232kohm 3% 234ET-2 Semitec 1: Rp13.759,50 9In Stock	Mfr. Part No. 234ET-2 Mouser Part No 954-234ET-2	Semitec	NTC (Negative Temperature Coefficient) Thermistors 232kohm 3% Learn More about Semitec atet	Datasheet	9In Stock	Rp13.759,50 Rp10.457,22 Rp9.007,89 Rp8.696,00 View Rp7.411,78 Rp7.393,44 Rp6.421,10 Rp5.962,45 Rp5.430,42	Min.: 1 Mult.: 1	ET	4274 K	232 kOhms	3.5 mW	3 %	PCB Mount	Radial	- 40 C	+ 100 C	1.6 mm	45 mm	1.6 mm	4 mm	Bulk
NTC (Negative Temperature Coefficient) Thermistors 20kohm 1% 203AT-2 Semitec 1: Rp9.356,46 3.866In Stock	Mfr. Part No. 203AT-2 Mouser Part No 954-203AT-2	Semitec	NTC (Negative Temperature Coefficient) Thermistors 20kohm 1% Learn More about Semitec atet	Datasheet	3.866In Stock	Rp9.356,46 Rp8.310,74 Rp8.292,39 Rp7.209,98 View Rp6.641,25 Rp6.035,83	Min.: 1 Mult.: 1	AT	4013 K	20 kOhms	10 mW	1 %	PCB Mount	Radial	- 50 C	+ 110 C		17 mm	3.7 mm	2.4 mm	Bulk
NTC (Negative Temperature Coefficient) Thermistors 41kohm 3% 413ET-2 Semitec 1: Rp17.795,62 200In Stock	Mfr. Part No. 413ET-2 Mouser Part No 954-413ET-2	Semitec	NTC (Negative Temperature Coefficient) Thermistors 41kohm 3% Learn More about Semitec atet	Datasheet	200In Stock	Rp17.795,62 Rp13.594,39 Rp11.723,09 Rp11.301,14 View Rp9.631,65 Rp9.613,30 Rp8.365,78 Rp7.375,09 Rp6.751,33	Min.: 1 Mult.: 1	ET		41 kOhms		3 %	PCB Mount	Radial	- 40 C	+ 100 C	1.6 mm	4 mm			Bulk
NTC (Negative Temperature Coefficient) Thermistors 83kohm 3% 833ET-2 Semitec 1: Rp13.759,50 317In Stock	Mfr. Part No. 833ET-2 Mouser Part No 954-833ET-2	Semitec	NTC (Negative Temperature Coefficient) Thermistors 83kohm 3% Learn More about Semitec atet	Datasheet	317In Stock	Rp13.759,50 Rp10.457,22 Rp9.007,89 Rp8.696,00 View Rp7.411,78 Rp7.393,44 Rp6.421,10 Rp5.962,45 Rp5.430,42	Min.: 1 Mult.: 1	ET	4013 K	83 kOhms		3 %	PCB Mount	Radial	- 40 C	+ 100 C	1.6 mm	45 mm	1.6 mm	4 mm	Bulk
NTC (Negative Temperature Coefficient) Thermistors 10kohm 1% 103AT-2 Semitec 1: Rp10.640,68 133.443In Stock 128.200Expected 11/12/2026	Mfr. Part No. 103AT-2 Mouser Part No 954-103AT-2	Semitec	NTC (Negative Temperature Coefficient) Thermistors 10kohm 1% Learn More about Semitec atet	Datasheet	133.443In Stock 128.200Expected 11/12/2026	Rp10.640,68 Rp9.998,57 Rp9.338,11 Rp8.897,81 View Rp8.475,85 Rp7.631,94 Rp7.338,40 Rp6.714,64	Min.: 1 Mult.: 1	AT	3435 K	10 kOhms		1 %	PCB Mount	Radial	- 50 C	+ 110 C		17 mm	3.7 mm	2.4 mm	Bulk
NTC (Negative Temperature Coefficient) Thermistors 10kohm 1% 103AT-11 Semitec 1: Rp42.195,80 3.678In Stock 8.000Expected 08/01/2027	Mfr. Part No. 103AT-11 Mouser Part No 954-103AT-11	Semitec	NTC (Negative Temperature Coefficient) Thermistors 10kohm 1% Learn More about Semitec atet	Datasheet	3.678In Stock 8.000Expected 08/01/2027	Rp42.195,80 Rp40.361,20 Rp37.976,22 Rp36.508,54 View Rp34.857,40 Rp31.371,66 Rp30.270,90 Rp29.537,06	Min.: 1 Mult.: 1	AT	3435 K	10 kOhms		1 %	Off-Board	Wire Lead	- 50 C	+ 105 C		600 mm	6 mm	5 mm	Bulk
NTC (Negative Temperature Coefficient) Thermistors 10kohm 1% Shape 1 30 AWG 150mm 103AT-4-10228 Semitec 1: Rp13.576,04 7.393In Stock	Mfr. Part No. 103AT-4-10228 Mouser Part No 954-103AT-4-10228	Semitec	NTC (Negative Temperature Coefficient) Thermistors 10kohm 1% Shape 1 30 AWG 150mm Learn More about Semitec atet	Datasheet	7.393In Stock	Rp13.576,04 Rp12.768,82 Rp12.383,55 Rp12.071,67 View Rp11.796,48 Rp10.145,34 Rp9.650,00 Rp8.861,12	Min.: 1 Mult.: 1	AT	3435 K	10 kOhms		1 %	Off-Board	Wire Lead	- 50 C	+ 90 C	2.5 mm	150 mm	2.5 mm	8 mm	Bulk
NTC (Negative Temperature Coefficient) Thermistors 10kohm 1% Shape 1 30 AWG 100mm 103AT-4-70261 Semitec 1: Rp12.842,20 29.453In Stock	Mfr. Part No. 103AT-4-70261 Mouser Part No 954-103AT-4-70261	Semitec	NTC (Negative Temperature Coefficient) Thermistors 10kohm 1% Shape 1 30 AWG 100mm Learn More about Semitec atet	Datasheet	29.453In Stock	Rp12.842,20 Rp12.126,71 Rp11.337,83 Rp10.805,79 View Rp10.310,45 Rp9.319,77 Rp8.952,85 Rp8.402,47	Min.: 1 Mult.: 1	AT	3435 K	10 kOhms		1 %	Off-Board	Wire Lead	- 50 C	+ 90 C	2.5 mm	100 mm	2.5 mm	8 mm	Bulk
NTC (Negative Temperature Coefficient) Thermistors 10kohm 1% Shape 1 30 AWG 175mm 103AT-4-70316 Semitec 1: Rp13.942,96 7.430In Stock 27.000On Order	Mfr. Part No. 103AT-4-70316 Mouser Part No 954-103AT-4-70316	Semitec	NTC (Negative Temperature Coefficient) Thermistors 10kohm 1% Shape 1 30 AWG 175mm Learn More about Semitec atet	Datasheet	7.430In Stock 27.000On Order On Order Ship Dates Mfr. No: 103AT-4-70316 Stock: 7.430 Can Dispatch Immediately On Order: 8.200 Expected 13/11/2026 18.800 Expected 11/12/2026 Factory Lead Time: 17 Weeks	Rp13.942,96 Rp13.209,12 Rp12.365,20 Rp11.778,13 View Rp11.246,10 Rp10.163,68 Rp9.778,42 Rp8.989,54	Min.: 1 Mult.: 1	AT	3435 K	10 kOhms		1 %	Off-Board	Wire Lead	- 50 C	+ 90 C	2.5 mm	175 mm	2.5 mm	8 mm	Bulk
NTC (Negative Temperature Coefficient) Thermistors 10kohm 1% Shape 1 30 AWG 50mm 103AT-4-70374 Semitec 1: Rp13.209,12 25.818In Stock 32.800Expected 17/02/2027	Mfr. Part No. 103AT-4-70374 Mouser Part No 954-103AT-4-70374	Semitec	NTC (Negative Temperature Coefficient) Thermistors 10kohm 1% Shape 1 30 AWG 50mm Learn More about Semitec atet	Datasheet	25.818In Stock 32.800Expected 17/02/2027	Rp13.209,12 Rp12.420,24 Rp11.631,36 Rp11.062,64 View Rp10.567,30 Rp10.548,95 Rp9.411,50 Rp8.989,54 Rp8.237,35	Min.: 1 Mult.: 1	AT	3435 K	10 kOhms		1 %	Off-Board	Wire Lead	- 50 C	+ 90 C	2.5 mm	50 mm	2.5 mm	8 mm	Bulk
NTC (Negative Temperature Coefficient) Thermistors 10kohm 1% Shape 1 30 AWG 120mm 103AT-4-70378 Semitec 1: Rp12.475,28 5.062In Stock	Mfr. Part No. 103AT-4-70378 Mouser Part No 954-103AT-4-70378	Semitec	NTC (Negative Temperature Coefficient) Thermistors 10kohm 1% Shape 1 30 AWG 120mm Learn More about Semitec atet	Datasheet	5.062In Stock	Rp12.475,28 Rp11.814,82 Rp11.044,29 Rp10.530,60 View Rp10.053,61 Rp9.429,84 Rp9.062,92 Rp8.696,00 Rp7.980,51	Min.: 1 Mult.: 1	AT	3435 K	10 kOhms		1 %	Off-Board	Wire Lead	- 50 C	+ 90 C	2.5 mm	120 mm	2.5 mm	8 mm	Bulk
NTC (Negative Temperature Coefficient) Thermistors 1kohm 1% 102AT-2 Semitec 1: Rp12.842,20 22In Stock 400On Order	Mfr. Part No. 102AT-2 Mouser Part No 954-102AT-2	Semitec	NTC (Negative Temperature Coefficient) Thermistors 1kohm 1% Learn More about Semitec atet	Datasheet	22In Stock 400On Order On Order Ship Dates Mfr. No: 102AT-2 Stock: 22 Can Dispatch Immediately On Order: 200 Expected 25/01/2027 200 Expected 15/02/2027 Factory Lead Time: 18 Weeks	Rp12.842,20 Rp12.108,36 Rp11.337,83 Rp10.787,45 View Rp10.310,45 Rp9.301,42 Rp8.934,50 Rp8.200,66	Min.: 1 Mult.: 1	AT	3100 K	1 kOhms		1 %	PCB Mount	Radial	- 50 C	+ 90 C		17 mm	3.7 mm	2.4 mm	Bulk
NTC (Negative Temperature Coefficient) Thermistors 10kohm 3% 103ET-1 Semitec 1: Rp16.511,40 215In Stock	Mfr. Part No. 103ET-1 Mouser Part No 954-103ET-1	Semitec	NTC (Negative Temperature Coefficient) Thermistors 10kohm 3% Learn More about Semitec atet	Datasheet	215In Stock	Rp16.511,40 Rp15.557,41 Rp13.374,23 Rp12.585,36 View Rp12.273,47 Rp11.961,59 Rp9.961,88 Rp9.576,61 Rp8.806,08	Min.: 1 Mult.: 1	ET	3250 K	10 kOhms	3.5 mW	3 %	Off-Board	Wire Lead	- 40 C	+ 90 C	1.5 mm	87 mm	1.5 mm	4 mm	Bulk
NTC (Negative Temperature Coefficient) Thermistors 10kohm 3% 103ET-2 Semitec 1: Rp17.612,16 163In Stock	Mfr. Part No. 103ET-2 Mouser Part No 954-103ET-2	Semitec	NTC (Negative Temperature Coefficient) Thermistors 10kohm 3% Learn More about Semitec atet	Datasheet	163In Stock	Rp17.612,16 Rp13.576,04 Rp11.704,75 Rp11.282,79 View Rp9.613,30 Rp8.365,78 Rp7.375,09 Rp6.751,33	Min.: 1 Mult.: 1	ET	3250 K	10 kOhms	3.5 mW	3 %	Off-Board	Wire Lead	- 40 C	+ 90 C	1.6 mm	45 mm	1.6 mm	4 mm	Bulk
NTC (Negative Temperature Coefficient) Thermistors 10kohm 2% 103ETB Semitec 1: Rp12.842,20 400In Stock	Mfr. Part No. 103ETB Mouser Part No 954-103ETB	Semitec	NTC (Negative Temperature Coefficient) Thermistors 10kohm 2% Learn More about Semitec atet	Datasheet	400In Stock	Rp12.842,20 Rp12.163,40 Rp11.392,87 Rp10.860,83 View Rp10.365,49 Rp10.347,14 Rp9.356,46 Rp8.989,54 Rp8.255,70	Min.: 1 Mult.: 1	ET	3435 K	10 kOhms	3.5 mW	2 %	PCB Mount	Wire Lead	- 40 C	+ 90 C	1.6 mm	45 mm	1.6 mm	4 mm	Bulk
NTC (Negative Temperature Coefficient) Thermistors 2kohm 1% 202AT-2 Semitec 1: Rp17.612,16 1.450In Stock	Mfr. Part No. 202AT-2 Mouser Part No 954-202AT-2	Semitec	NTC (Negative Temperature Coefficient) Thermistors 2kohm 1% Learn More about Semitec atet	Datasheet	1.450In Stock	Rp17.612,16 Rp13.484,31 Rp11.613,02 Rp11.209,41 View Rp9.558,27 Rp8.310,74 Rp7.540,21 Rp6.898,10	Min.: 1 Mult.: 1	AT	3182 K	2 kOhms	10 mW	1 %	PCB Mount	Radial	- 50 C	+ 90 C		17 mm	3.7 mm	2.4 mm	Bulk
NTC (Negative Temperature Coefficient) Thermistors 4kohm 3% 402ET-1 Semitec 1: Rp16.511,40 578In Stock	Mfr. Part No. 402ET-1 Mouser Part No 954-402ET-1	Semitec	NTC (Negative Temperature Coefficient) Thermistors 4kohm 3% Learn More about Semitec atet	Datasheet	578In Stock	Rp16.511,40 Rp13.961,31 Rp12.365,20 Rp11.778,13 View Rp11.246,10 Rp10.182,03 Rp8.457,51 Rp7.760,36	Min.: 1 Mult.: 1	ET	3100 K	4 kOhms	3.5 mW	3 %	PCB Mount	Radial	- 40 C	+ 90 C	1.5 mm	87 mm	1.5 mm	4 mm	Bulk
NTC (Negative Temperature Coefficient) Thermistors 5kohm 1% 502AT-2 Semitec 1: Rp10.640,68 981In Stock	Mfr. Part No. 502AT-2 Mouser Part No 954-502AT-2	Semitec	NTC (Negative Temperature Coefficient) Thermistors 5kohm 1% Learn More about Semitec atet	Datasheet	981In Stock	Rp10.640,68 Rp9.998,57 Rp9.338,11 Rp8.897,81 View Rp8.475,85 Rp7.631,94 Rp7.338,40 Rp6.714,64	Min.: 1 Mult.: 1	AT	3324 K	5 kOhms	10 mW	1 %	PCB Mount	Radial	- 50 C	+ 110 C		17 mm	3.7 mm	2.4 mm	Bulk
NTC (Negative Temperature Coefficient) Thermistors 50kohm 3% 503ET-1 Semitec 1: Rp22.198,66 388In Stock	Mfr. Part No. 503ET-1 Mouser Part No 954-503ET-1	Semitec	NTC (Negative Temperature Coefficient) Thermistors 50kohm 3% Learn More about Semitec atet	Datasheet	388In Stock	Rp22.198,66 Rp16.731,55 Rp13.374,23 Rp12.585,36 View Rp12.273,47 Rp10.310,45 Rp9.576,61 Rp8.806,08	Min.: 1 Mult.: 1	ET	4055 K	50 kOhms	3.5 mW	3 %	PCB Mount	Radial	- 40 C	+ 100 C	1.5 mm	87 mm	1.5 mm	4 mm	Bulk
NTC (Negative Temperature Coefficient) Thermistors 10kohm 1% Shape1 30 AWG 75mm 103AT-4-80025 Semitec 1: Rp15.227,18 18.884On Order	Mfr. Part No. 103AT-4-80025 Mouser Part No 954-103AT-4-80025	Semitec	NTC (Negative Temperature Coefficient) Thermistors 10kohm 1% Shape1 30 AWG 75mm Learn More about Semitec atet	Datasheet	18.884On Order On Order Ship Dates Mfr. No: 103AT-4-80025 Stock: 0 On Order: 4.684 Expected 04/02/2027 3.600 Expected 15/02/2027 10.600 Expected 05/03/2027 Factory Lead Time: 20 Weeks	Rp15.227,18 Rp14.419,96 Rp12.291,82 Rp11.557,98 View Rp11.264,44 Rp11.080,98 Rp9.466,54 Rp8.861,12 Rp8.127,28	Min.: 1 Mult.: 1	AT	3435 K	10 kOhms		1 %	Off-Board	Wire Lead	- 50 C	+ 90 C	2.5 mm	75 mm	2.5 mm	8 mm	Bulk
NTC (Negative Temperature Coefficient) Thermistors 10kohm 1% 103AT-5-1P-FT Semitec 1: Rp10.090,30 13.798On Order	Mfr. Part No. 103AT-5-1P-FT Mouser Part No 954-103AT-5-1P-FT	Semitec	NTC (Negative Temperature Coefficient) Thermistors 10kohm 1% Learn More about Semitec atet	Datasheet	13.798On Order On Order Ship Dates Mfr. No: 103AT-5-1P-FT Stock: 0 On Order: 8.798 Expected 12/11/2026 5.000 Expected 13/11/2026 Factory Lead Time: 22 Weeks	Cut Tape Rp10.090,30 Rp9.539,92 Rp8.916,16 Rp8.475,85 View Reel Rp6.531,18 Rp8.072,24 Rp7.283,36 Rp6.989,83 Rp6.531,18	Min.: 1 Mult.: 1 : 2.500		3435 K	10 kOhms		1 %	PCB Mount	Radial	- 50 C	+ 110 C	2.5 mm	30 mm	3.5 mm	2.4 mm	Reel, Cut Tape
NTC (Negative Temperature Coefficient) Thermistors 100kohm 1% 104AT-2 Semitec 1: Rp17.612,16 25.097On Order	Mfr. Part No. 104AT-2 Mouser Part No 954-104AT-2	Semitec	NTC (Negative Temperature Coefficient) Thermistors 100kohm 1% Learn More about Semitec atet	Datasheet	25.097On Order On Order Ship Dates Mfr. No: 104AT-2 Stock: 0 On Order: 7.897 Expected 25/12/2026 17.200 Expected 08/01/2027 Factory Lead Time: 19 Weeks	Rp17.612,16 Rp13.612,73 Rp11.723,09 Rp11.319,48 View Rp9.631,65 Rp8.384,12 Rp7.375,09 Rp6.769,67	Min.: 1 Mult.: 1	AT	4665 K	100 kOhms	10 mW	1 %	PCB Mount	Radial	- 50 C	+ 110 C		17 mm	3.7 mm	2.4 mm	Bulk
NTC (Negative Temperature Coefficient) Thermistors 4kohm 3% 402ET-2 Semitec 1: Rp15.777,56 399Expected 11/12/2026	Mfr. Part No. 402ET-2 Mouser Part No 954-402ET-2	Semitec	NTC (Negative Temperature Coefficient) Thermistors 4kohm 3% Learn More about Semitec atet	Datasheet	399Expected 11/12/2026	Rp15.777,56 Rp14.896,95 Rp12.750,47 Rp11.979,94 View Rp11.686,40 Rp11.447,90 Rp9.539,92 Rp9.173,00 Rp8.420,81	Min.: 1 Mult.: 1	ET	3100 K	4 kOhms	3.5 mW	3 %	PCB Mount	Radial	- 40 C	+ 90 C	1.6 mm	45 mm	1.6 mm	4 mm	Bulk
NTC (Negative Temperature Coefficient) Thermistors 40kohm 3% 403ET-2 Semitec 1: Rp17.612,16 197Expected 08/01/2027	Mfr. Part No. 403ET-2 Mouser Part No 954-403ET-2	Semitec	NTC (Negative Temperature Coefficient) Thermistors 40kohm 3% Learn More about Semitec atet	Datasheet	197Expected 08/01/2027	Rp17.612,16 Rp13.576,04 Rp11.704,75 Rp11.282,79 View Rp9.613,30 Rp8.365,78 Rp7.375,09 Rp6.751,33	Min.: 1 Mult.: 1	ET	3525 K	40 kOhms	3.5 mW	3 %	PCB Mount	Radial	- 40 C	+ 100 C	1.6 mm	45 mm	1.6 mm	4 mm	Bulk

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