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 (DKK) 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: 9,10 kr. 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	9,10 kr. 6,84 kr. 5,47 kr. 5,15 kr. View 5,02 kr. 4,21 kr. 3,92 kr. 3,60 kr.	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 20kohm 1% 203AT-2 Semitec 1: 3,83 kr. 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	3,83 kr. 3,40 kr. 3,39 kr. 2,95 kr. View 2,72 kr. 2,47 kr.	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: 7,28 kr. 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	7,28 kr. 5,56 kr. 4,80 kr. 4,63 kr. View 3,94 kr. 3,93 kr. 3,42 kr. 3,01 kr. 2,76 kr.	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: 5,63 kr. 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	5,63 kr. 4,27 kr. 3,69 kr. 3,56 kr. View 3,03 kr. 3,02 kr. 2,63 kr. 2,44 kr. 2,22 kr.	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 232kohm 3% 234ET-2 Semitec 1: 5,63 kr. 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	5,63 kr. 4,27 kr. 3,69 kr. 3,56 kr. View 3,03 kr. 3,02 kr. 2,63 kr. 2,44 kr. 2,22 kr.	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 10kohm 1% 103AT-2 Semitec 1: 4,35 kr. 134.271In 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	134.271In Stock 128.200Expected 11/12/2026	4,35 kr. 4,09 kr. 3,82 kr. 3,64 kr. View 3,47 kr. 3,12 kr. 3,00 kr. 2,75 kr.	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: 17,23 kr. 4.227In 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	4.227In Stock 8.000Expected 08/01/2027	17,23 kr. 16,49 kr. 15,52 kr. 14,92 kr. View 14,25 kr. 12,83 kr. 12,38 kr. 12,09 kr.	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: 4,10 kr. 7.507In 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	7.507In Stock	4,10 kr. 3,93 kr. 3,67 kr. 3,49 kr. View 3,33 kr. 3,01 kr. 2,89 kr. 2,64 kr.	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: 5,25 kr. 32.283In 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	32.283In Stock	5,25 kr. 4,96 kr. 4,64 kr. 4,42 kr. View 4,21 kr. 3,81 kr. 3,66 kr. 3,44 kr.	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: 5,71 kr. 7.476In 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	7.476In Stock 27.000On Order On Order Ship Dates Mfr. No: 103AT-4-70316 Stock: 7.476 Can Dispatch Immediately On Order: 8.200 Expected 13/11/2026 18.800 Expected 11/12/2026 Factory Lead Time: 17 Weeks	5,71 kr. 5,40 kr. 5,06 kr. 4,82 kr. View 4,60 kr. 4,16 kr. 4,00 kr. 3,68 kr.	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: 5,40 kr. 27.553In Stock	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	27.553In Stock	5,40 kr. 5,08 kr. 4,76 kr. 4,53 kr. View 4,32 kr. 4,31 kr. 3,85 kr. 3,68 kr. 3,37 kr.	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: 5,10 kr. 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	5,10 kr. 4,83 kr. 4,52 kr. 4,30 kr. View 4,11 kr. 3,86 kr. 3,71 kr. 3,56 kr. 3,27 kr.	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: 5,25 kr. 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 19/01/2027 200 Expected 25/01/2027 Factory Lead Time: 16 Weeks	5,25 kr. 4,95 kr. 4,64 kr. 4,42 kr. View 4,21 kr. 3,80 kr. 3,66 kr. 3,36 kr.	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: 6,75 kr. 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	6,75 kr. 6,36 kr. 5,47 kr. 5,15 kr. View 5,02 kr. 4,89 kr. 4,07 kr. 3,92 kr. 3,60 kr.	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: 7,21 kr. 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	7,21 kr. 5,55 kr. 4,79 kr. 4,62 kr. View 3,93 kr. 3,42 kr. 3,01 kr. 2,76 kr.	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: 5,25 kr. 409In Stock	Mfr. Part No. 103ETB Mouser Part No 954-103ETB	Semitec	NTC (Negative Temperature Coefficient) Thermistors 10kohm 2% Learn More about Semitec atet	Datasheet	409In Stock	5,25 kr. 4,98 kr. 4,66 kr. 4,45 kr. View 4,24 kr. 4,23 kr. 3,83 kr. 3,68 kr. 3,38 kr.	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: 7,21 kr. 1.470In 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	1.470In Stock	7,21 kr. 5,51 kr. 4,75 kr. 4,59 kr. View 3,91 kr. 3,40 kr. 3,08 kr. 2,82 kr.	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: 6,75 kr. 590In 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	590In Stock	6,75 kr. 5,71 kr. 5,06 kr. 4,82 kr. View 4,60 kr. 4,16 kr. 3,46 kr. 3,18 kr.	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: 4,35 kr. 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	4,35 kr. 4,09 kr. 3,82 kr. 3,64 kr. View 3,47 kr. 3,12 kr. 3,00 kr. 2,75 kr.	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: 9,10 kr. 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	9,10 kr. 6,84 kr. 5,47 kr. 5,15 kr. View 5,02 kr. 4,21 kr. 3,92 kr. 3,60 kr.	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: 6,23 kr. 8.285On 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	8.285On Order On Order Ship Dates Mfr. No: 103AT-4-80025 Stock: 0 On Order: 1.285 Expected 21/01/2027 7.000 Expected 04/02/2027 Factory Lead Time: 17 Weeks	6,23 kr. 5,90 kr. 5,03 kr. 4,73 kr. View 4,61 kr. 4,54 kr. 3,87 kr. 3,63 kr. 3,33 kr.	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: 4,13 kr. 13.812On 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	13.812On Order On Order Ship Dates Mfr. No: 103AT-5-1P-FT Stock: 0 On Order: 3.812 Expected 30/10/2026 10.000 Expected 13/11/2026 Factory Lead Time: 21 Weeks	Cut Tape 4,13 kr. 3,90 kr. 3,65 kr. 3,47 kr. View Reel 2,67 kr. 3,30 kr. 2,98 kr. 2,86 kr. 2,67 kr.	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: 7,21 kr. 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	7,21 kr. 5,57 kr. 4,80 kr. 4,63 kr. View 3,94 kr. 3,43 kr. 3,01 kr. 2,77 kr.	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: 6,45 kr. 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	6,45 kr. 6,09 kr. 5,21 kr. 4,90 kr. View 4,78 kr. 4,68 kr. 3,90 kr. 3,75 kr. 3,45 kr.	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: 7,21 kr. 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	7,21 kr. 5,55 kr. 4,79 kr. 4,62 kr. View 3,93 kr. 3,42 kr. 3,01 kr. 2,76 kr.	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

AT & ET Thermistors

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