NTC Thermistors – Mouser Mexico

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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 (USD) 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 Thermistors 232kohm 3% 234ET-2 Semitec 1: $0.975 9In Stock	Mfr. Part # 234ET-2 Mouser Part # 954-234ET-2	Semitec	NTC Thermistors 232kohm 3% Learn More about Semitec atet	Datasheet	9In Stock	$0.975 $0.741 $0.638 $0.616 View $0.525 $0.524 $0.455 $0.423 $0.385	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 Thermistors 20kohm 1% 203AT-2 Semitec 1: $0.663 3,866In Stock	Mfr. Part # 203AT-2 Mouser Part # 954-203AT-2	Semitec	NTC Thermistors 20kohm 1% Learn More about Semitec atet	Datasheet	3,866In Stock	$0.663 $0.589 $0.588 $0.511 View $0.471 $0.428	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 Thermistors 41kohm 3% 413ET-2 Semitec 1: $1.26 200In Stock	Mfr. Part # 413ET-2 Mouser Part # 954-413ET-2	Semitec	NTC Thermistors 41kohm 3% Learn More about Semitec atet	Datasheet	200In Stock	$1.26 $0.963 $0.831 $0.801 View $0.683 $0.681 $0.593 $0.523 $0.478	Min.: 1 Mult.: 1	ET		41 kOhms		3 %	PCB Mount	Radial	- 40 C	+ 100 C	1.6 mm	4 mm			Bulk
NTC Thermistors 83kohm 3% 833ET-2 Semitec 1: $0.975 317In Stock	Mfr. Part # 833ET-2 Mouser Part # 954-833ET-2	Semitec	NTC Thermistors 83kohm 3% Learn More about Semitec atet	Datasheet	317In Stock	$0.975 $0.741 $0.638 $0.616 View $0.525 $0.524 $0.455 $0.423 $0.385	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 Thermistors 100kohm 3% 104ET-1 Semitec 1: $1.57 170In Stock	Mfr. Part # 104ET-1 Mouser Part # 954-104ET-1	Semitec	NTC Thermistors 100kohm 3% Learn More about Semitec atet	Datasheet	170In Stock	$1.57 $1.19 $0.948 $0.892 View $0.87 $0.731 $0.679 $0.624	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 Thermistors 10kohm 1% 103AT-2 Semitec 1: $0.754 134,276In Stock 128,200Expected 12/11/2026	Mfr. Part # 103AT-2 Mouser Part # 954-103AT-2	Semitec	NTC Thermistors 10kohm 1% Learn More about Semitec atet	Datasheet	134,276In Stock 128,200Expected 12/11/2026	$0.754 $0.709 $0.662 $0.631 View $0.601 $0.541 $0.52 $0.476	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 Thermistors 10kohm 1% 103AT-11 Semitec 1: $2.99 4,239In Stock 8,000Expected 1/8/2027	Mfr. Part # 103AT-11 Mouser Part # 954-103AT-11	Semitec	NTC Thermistors 10kohm 1% Learn More about Semitec atet	Datasheet	4,239In Stock 8,000Expected 1/8/2027	$2.99 $2.86 $2.69 $2.59 View $2.47 $2.22 $2.15 $2.09	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 Thermistors 10kohm 1% Shape 1 30 AWG 150mm 103AT-4-10228 Semitec 1: $0.962 7,507In Stock	Mfr. Part # 103AT-4-10228 Mouser Part # 954-103AT-4-10228	Semitec	NTC Thermistors 10kohm 1% Shape 1 30 AWG 150mm Learn More about Semitec atet	Datasheet	7,507In Stock	$0.962 $0.905 $0.878 $0.855 View $0.836 $0.719 $0.684 $0.628	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 Thermistors 10kohm 1% Shape 1 30 AWG 100mm 103AT-4-70261 Semitec 1: $0.91 32,283In Stock	Mfr. Part # 103AT-4-70261 Mouser Part # 954-103AT-4-70261	Semitec	NTC Thermistors 10kohm 1% Shape 1 30 AWG 100mm Learn More about Semitec atet	Datasheet	32,283In Stock	$0.91 $0.859 $0.803 $0.766 View $0.731 $0.66 $0.634 $0.595	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 Thermistors 10kohm 1% Shape 1 30 AWG 175mm 103AT-4-70316 Semitec 1: $0.988 7,501In Stock 27,000On Order	Mfr. Part # 103AT-4-70316 Mouser Part # 954-103AT-4-70316	Semitec	NTC Thermistors 10kohm 1% Shape 1 30 AWG 175mm Learn More about Semitec atet	Datasheet	7,501In Stock 27,000On Order On Order Ship Dates Mfr. #: 103AT-4-70316 Stock: 7,501 Can Ship Immediately On Order: 8,200 Expected 11/13/2026 18,800 Expected 12/11/2026 Factory Lead-Time: 17 Weeks	$0.988 $0.936 $0.876 $0.835 View $0.797 $0.72 $0.693 $0.637	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 Thermistors 10kohm 1% Shape 1 30 AWG 50mm 103AT-4-70374 Semitec 1: $0.936 27,553In Stock	Mfr. Part # 103AT-4-70374 Mouser Part # 954-103AT-4-70374	Semitec	NTC Thermistors 10kohm 1% Shape 1 30 AWG 50mm Learn More about Semitec atet	Datasheet	27,553In Stock	$0.936 $0.88 $0.824 $0.784 View $0.749 $0.748 $0.667 $0.637 $0.584	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 Thermistors 10kohm 1% Shape 1 30 AWG 120mm 103AT-4-70378 Semitec 1: $0.884 5,062In Stock	Mfr. Part # 103AT-4-70378 Mouser Part # 954-103AT-4-70378	Semitec	NTC Thermistors 10kohm 1% Shape 1 30 AWG 120mm Learn More about Semitec atet	Datasheet	5,062In Stock	$0.884 $0.837 $0.783 $0.746 View $0.712 $0.668 $0.642 $0.616 $0.566	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 Thermistors 1kohm 1% 102AT-2 Semitec 1: $0.91 22In Stock 400On Order	Mfr. Part # 102AT-2 Mouser Part # 954-102AT-2	Semitec	NTC Thermistors 1kohm 1% Learn More about Semitec atet	Datasheet	22In Stock 400On Order On Order Ship Dates Mfr. #: 102AT-2 Stock: 22 Can Ship Immediately On Order: 200 Expected 1/19/2027 200 Expected 1/25/2027 Factory Lead-Time: 16 Weeks	$0.91 $0.858 $0.803 $0.764 View $0.731 $0.659 $0.633 $0.581	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 Thermistors 10kohm 3% 103ET-1 Semitec 1: $1.17 215In Stock	Mfr. Part # 103ET-1 Mouser Part # 954-103ET-1	Semitec	NTC Thermistors 10kohm 3% Learn More about Semitec atet	Datasheet	215In Stock	$1.17 $1.10 $0.948 $0.892 View $0.87 $0.848 $0.706 $0.679 $0.624	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 Thermistors 10kohm 3% 103ET-2 Semitec 1: $1.25 163In Stock	Mfr. Part # 103ET-2 Mouser Part # 954-103ET-2	Semitec	NTC Thermistors 10kohm 3% Learn More about Semitec atet	Datasheet	163In Stock	$1.25 $0.962 $0.829 $0.80 View $0.681 $0.593 $0.523 $0.478	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 Thermistors 10kohm 2% 103ETB Semitec 1: $0.91 409In Stock	Mfr. Part # 103ETB Mouser Part # 954-103ETB	Semitec	NTC Thermistors 10kohm 2% Learn More about Semitec atet	Datasheet	409In Stock	$0.91 $0.862 $0.807 $0.77 View $0.735 $0.733 $0.663 $0.637 $0.585	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 Thermistors 2kohm 1% 202AT-2 Semitec 1: $1.25 1,470In Stock	Mfr. Part # 202AT-2 Mouser Part # 954-202AT-2	Semitec	NTC Thermistors 2kohm 1% Learn More about Semitec atet	Datasheet	1,470In Stock	$1.25 $0.956 $0.823 $0.794 View $0.677 $0.589 $0.534 $0.489	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 Thermistors 4kohm 3% 402ET-1 Semitec 1: $1.17 590In Stock	Mfr. Part # 402ET-1 Mouser Part # 954-402ET-1	Semitec	NTC Thermistors 4kohm 3% Learn More about Semitec atet	Datasheet	590In Stock	$1.17 $0.989 $0.876 $0.835 View $0.797 $0.722 $0.599 $0.55	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 Thermistors 5kohm 1% 502AT-2 Semitec 1: $0.754 981In Stock	Mfr. Part # 502AT-2 Mouser Part # 954-502AT-2	Semitec	NTC Thermistors 5kohm 1% Learn More about Semitec atet	Datasheet	981In Stock	$0.754 $0.709 $0.662 $0.631 View $0.601 $0.541 $0.52 $0.476	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 Thermistors 50kohm 3% 503ET-1 Semitec 1: $1.57 388In Stock	Mfr. Part # 503ET-1 Mouser Part # 954-503ET-1	Semitec	NTC Thermistors 50kohm 3% Learn More about Semitec atet	Datasheet	388In Stock	$1.57 $1.19 $0.948 $0.892 View $0.87 $0.731 $0.679 $0.624	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 Thermistors 10kohm 1% Shape1 30 AWG 75mm 103AT-4-80025 Semitec 1: $1.08 8,285On Order	Mfr. Part # 103AT-4-80025 Mouser Part # 954-103AT-4-80025	Semitec	NTC Thermistors 10kohm 1% Shape1 30 AWG 75mm Learn More about Semitec atet	Datasheet	8,285On Order On Order Ship Dates Mfr. #: 103AT-4-80025 Stock: 0 On Order: 1,285 Expected 1/21/2027 7,000 Expected 2/4/2027 Factory Lead-Time: 17 Weeks	$1.08 $1.02 $0.871 $0.819 View $0.798 $0.785 $0.671 $0.628 $0.576	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 Thermistors 10kohm 1% 103AT-5-1P-FT Semitec 1: $0.715 13,812On Order	Mfr. Part # 103AT-5-1P-FT Mouser Part # 954-103AT-5-1P-FT	Semitec	NTC Thermistors 10kohm 1% Learn More about Semitec atet	Datasheet	13,812On Order On Order Ship Dates Mfr. #: 103AT-5-1P-FT Stock: 0 On Order: 3,812 Expected 10/30/2026 10,000 Expected 11/13/2026 Factory Lead-Time: 21 Weeks	Cut Tape $0.715 $0.676 $0.632 $0.601 View Reel $0.463 $0.572 $0.516 $0.495 $0.463	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 Thermistors 100kohm 1% 104AT-2 Semitec 1: $1.25 25,097On Order	Mfr. Part # 104AT-2 Mouser Part # 954-104AT-2	Semitec	NTC Thermistors 100kohm 1% Learn More about Semitec atet	Datasheet	25,097On Order On Order Ship Dates Mfr. #: 104AT-2 Stock: 0 On Order: 7,897 Expected 12/25/2026 17,200 Expected 1/8/2027 Factory Lead-Time: 19 Weeks	$1.25 $0.965 $0.831 $0.802 View $0.683 $0.594 $0.523 $0.48	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 Thermistors 4kohm 3% 402ET-2 Semitec 1: $1.12 399Expected 12/11/2026	Mfr. Part # 402ET-2 Mouser Part # 954-402ET-2	Semitec	NTC Thermistors 4kohm 3% Learn More about Semitec atet	Datasheet	399Expected 12/11/2026	$1.12 $1.06 $0.904 $0.849 View $0.828 $0.811 $0.676 $0.65 $0.597	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 Thermistors 40kohm 3% 403ET-2 Semitec 1: $1.25 197Expected 1/8/2027	Mfr. Part # 403ET-2 Mouser Part # 954-403ET-2	Semitec	NTC Thermistors 40kohm 3% Learn More about Semitec atet	Datasheet	197Expected 1/8/2027	$1.25 $0.962 $0.829 $0.80 View $0.681 $0.593 $0.523 $0.478	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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