NTC (Negative Temperature Coefficient) Thermistors

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Leaded Thermistors

Littelfuse Leaded Thermistors offer a 100Ω to 100,000Ω resistance range, up to ±10% resistance tolerance, and high accuracy. These thermistors feature special lead materials and lengths, special encapsulants or probe housings, and fast thermal response. Littelfuse Leaded Thermistors are designed specifically for temperature sensing and control applications.

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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	Tolerance	Mounting Style	Termination Style	Minimum Operating Temperature	Maximum Operating Temperature	Diameter	Length	Width	Height	Packaging
NTC (Negative Temperature Coefficient) Thermistors NTC THERMISTOR 1K OHM 1.0C BEAD PX102E3 Littelfuse 1: Rp35.041 231In Stock	Mfr. Part No. PX102E3 Mouser Part No 803-PX102E3	Littelfuse	NTC (Negative Temperature Coefficient) Thermistors NTC THERMISTOR 1K OHM 1.0C BEAD Learn More about Littelfuse leaded thermistors	Datasheet	231In Stock	Rp35.041 Rp26.969 Rp22.566 Rp22.015 View Rp19.997 Rp16.585 Rp16.310	Min.: 1 Mult.: 1	PX	3263 K	1 kOhms	1 C	PCB Mount	Radial	- 80 C	+ 150 C	0.095 in	1.5 in	0.095 in	0.095 in	Bulk
NTC (Negative Temperature Coefficient) Thermistors NTC THERMISTOR 20K OHM 0.5C BEAD PW203J2 Littelfuse 1: Rp39.994 33In Stock	Mfr. Part No. PW203J2 Mouser Part No 803-PW203J2	Littelfuse	NTC (Negative Temperature Coefficient) Thermistors NTC THERMISTOR 20K OHM 0.5C BEAD Learn More about Littelfuse leaded thermistors	Datasheet	33In Stock	Rp39.994 Rp30.821 Rp25.684 Rp25.134 View Rp22.933 Rp18.529 Rp18.346	Min.: 1 Mult.: 1	PW	3892 K	20 kOhms	0.5 C	PCB Mount	Radial	- 80 C	+ 150 C	0.095 in	1.5 in	0.095 in	0.095 in	Bulk
NTC (Negative Temperature Coefficient) Thermistors NTC THERMISTOR 100K OHM 0.5C BEAD PW104R2 Littelfuse 1: Rp45.131 362In Stock	Mfr. Part No. PW104R2 Mouser Part No 803-PW104R2	Littelfuse	NTC (Negative Temperature Coefficient) Thermistors NTC THERMISTOR 100K OHM 0.5C BEAD Learn More about Littelfuse leaded thermistors	Datasheet	362In Stock	Rp45.131 Rp36.875 Rp29.904 Rp27.886 View Rp26.418 Rp24.951 Rp20.731	Min.: 1 Mult.: 1	PW	4140 K	100 kOhms	0.5 C	PCB Mount	Radial	- 80 C	+ 150 C	0.095 in	1.5 in	0.095 in	0.095 in	Bulk
NTC (Negative Temperature Coefficient) Thermistors NTC THERMISTOR 30K OHM 1.0C BEAD PX303J2 Littelfuse 1: Rp35.041 191In Stock	Mfr. Part No. PX303J2 Mouser Part No 803-PX303J2	Littelfuse	NTC (Negative Temperature Coefficient) Thermistors NTC THERMISTOR 30K OHM 1.0C BEAD Learn More about Littelfuse leaded thermistors	Datasheet	191In Stock	Rp35.041 Rp26.969 Rp22.566 Rp22.015 View Rp19.997 Rp17.575 Rp17.465 Rp17.429	Min.: 1 Mult.: 1	PX	3892 K	30 kOhms	1 C	PCB Mount	Radial	- 80 C	+ 150 C	0.095 in	1.5 in	0.095 in	0.095 in	Bulk
NTC (Negative Temperature Coefficient) Thermistors NTC THERMISTOR 3K OHM 0.5C BEAD PW302J2 Littelfuse 1: Rp39.994 155In Stock	Mfr. Part No. PW302J2 Mouser Part No 803-PW302J2	Littelfuse	NTC (Negative Temperature Coefficient) Thermistors NTC THERMISTOR 3K OHM 0.5C BEAD Learn More about Littelfuse leaded thermistors	Datasheet	155In Stock	Rp39.994 Rp30.821 Rp25.684 Rp25.134 View Rp22.933 Rp18.529 Rp18.346	Min.: 1 Mult.: 1	PW	3892 K	3 kOhms	0.5 C	PCB Mount	Radial	- 80 C	+ 150 C	0.095 in	1.5 in	0.095 in	0.095 in	Bulk
NTC (Negative Temperature Coefficient) Thermistors NTC THERMISTOR 20K OHM 0.2C BEAD PT203J2 Littelfuse 1: Rp43.113 105In Stock	Mfr. Part No. PT203J2 Mouser Part No 803-PT203J2	Littelfuse	NTC (Negative Temperature Coefficient) Thermistors NTC THERMISTOR 20K OHM 0.2C BEAD Learn More about Littelfuse leaded thermistors	Datasheet	105In Stock	Rp43.113 Rp35.224 Rp28.620 Rp26.602 View Rp25.317 Rp21.098 Rp20.731	Min.: 1 Mult.: 1	PT	3892 K	20 kOhms	0.2 C	PCB Mount	Radial	- 80 C	+ 150 C	0.095 in	1.5 in	0.095 in	0.095 in	Bulk
NTC (Negative Temperature Coefficient) Thermistors NTC THERMISTOR 30K OHM 0.5C BEAD PW303J2 Littelfuse 1: Rp41.462 100In Stock	Mfr. Part No. PW303J2 Mouser Part No 803-PW303J2	Littelfuse	NTC (Negative Temperature Coefficient) Thermistors NTC THERMISTOR 30K OHM 0.5C BEAD Learn More about Littelfuse leaded thermistors	Datasheet	100In Stock	Rp41.462 Rp31.188 Rp24.951 Rp23.666 View Rp19.814 Rp19.080 Rp15.062 Rp13.925	Min.: 1 Mult.: 1	PW	3892 K	30 kOhms	0.5 C	PCB Mount	Radial	- 80 C	+ 150 C	0.095 in	1.5 in	0.095 in	0.095 in	Bulk
NTC (Negative Temperature Coefficient) Thermistors 10K OHM .2% DEG C INTRCHGBL PT103J2 Littelfuse 1: Rp32.289 2.167In Stock 12.000On Order	Mfr. Part No. PT103J2 Mouser Part No 803-PT103J2	Littelfuse	NTC (Negative Temperature Coefficient) Thermistors 10K OHM .2% DEG C INTRCHGBL Learn More about Littelfuse leaded thermistors	Datasheet	2.167In Stock 12.000On Order On Order Ship Dates Mfr. No: PT103J2 Stock: 2.167 Can Dispatch Immediately On Order: 4.000 Expected 04/11/2026 8.000 Expected 23/12/2026 Factory Lead Time: 22 Weeks	Rp32.289 Rp30.638 Rp28.620 Rp26.969 View Rp24.767 Rp22.749 Rp22.015 Rp20.548	Min.: 1 Mult.: 1	PT	3892 K	10 kOhms	0.2 C	PCB Mount	Radial	- 80 C	+ 150 C	0.095 in	1.5 in	0.095 in	0.095 in	Bulk
NTC (Negative Temperature Coefficient) Thermistors 5K OHM .2% DEG C INTRCHGBL PT502J2 Littelfuse 1: Rp30.454 1.633In Stock	Mfr. Part No. PT502J2 Mouser Part No 803-PT502J2	Littelfuse	NTC (Negative Temperature Coefficient) Thermistors 5K OHM .2% DEG C INTRCHGBL Learn More about Littelfuse leaded thermistors	Datasheet	1.633In Stock	Rp30.454 Rp28.987 Rp27.336 Rp26.051 View Rp24.951 Rp23.299 Rp22.566 Rp20.181	Min.: 1 Mult.: 1	PT	3892 K	5 kOhms	0.2 C	PCB Mount	Radial	- 80 C	+ 150 C	0.095 in	1.5 in	0.095 in	0.095 in	Bulk
NTC (Negative Temperature Coefficient) Thermistors NTC THERMISTOR 1K OHM 0.2C BEAD PT102J2 Littelfuse 1: Rp102.004 100In Stock	Mfr. Part No. PT102J2 Mouser Part No 803-PT102J2	Littelfuse	NTC (Negative Temperature Coefficient) Thermistors NTC THERMISTOR 1K OHM 0.2C BEAD Learn More about Littelfuse leaded thermistors	Datasheet	100In Stock	Rp102.004 Rp90.629 Rp81.640 Rp76.319 View Rp73.384 Rp69.348 Rp66.046 Rp63.844 Rp61.826	Min.: 1 Mult.: 1	PT	3892 K	1 kOhms	0.2 C	PCB Mount	Radial	- 80 C	+ 150 C	0.095 in	1.5 in	0.095 in	0.095 in	Bulk
NTC (Negative Temperature Coefficient) Thermistors 10K OHM .2% DEG C INTRCHGBL PT103G2 Littelfuse 1: Rp46.232 80In Stock 11.500On Order	Mfr. Part No. PT103G2 Mouser Part No 803-PT103G2	Littelfuse	NTC (Negative Temperature Coefficient) Thermistors 10K OHM .2% DEG C INTRCHGBL Learn More about Littelfuse leaded thermistors	Datasheet	80In Stock 11.500On Order On Order Ship Dates Mfr. No: PT103G2 Stock: 80 Can Dispatch Immediately On Order: 2.500 Expected 05/10/2026 3.000 Expected 16/11/2026 6.000 Expected 25/01/2027 Factory Lead Time: 21 Weeks	Rp46.232 Rp37.793 Rp35.224 Rp33.757 View Rp31.372 Rp28.987 Rp27.886 Rp26.051	Min.: 1 Mult.: 1	PT	3575 K	10 kOhms	0.2 C	PCB Mount	Radial	- 80 C	+ 150 C	0.095 in	1.5 in	0.095 in	0.095 in	Bulk
NTC (Negative Temperature Coefficient) Thermistors 2.2K OHM .2% DEG C INTRCHGBL PT222J2 Littelfuse 1: Rp32.289 418In Stock 500Expected 05/10/2026	Mfr. Part No. PT222J2 Mouser Part No 803-PT222J2	Littelfuse	NTC (Negative Temperature Coefficient) Thermistors 2.2K OHM .2% DEG C INTRCHGBL Learn More about Littelfuse leaded thermistors	Datasheet	418In Stock 500Expected 05/10/2026	Rp32.289 Rp30.638 Rp28.620 Rp27.336 View Rp26.051 Rp25.684 Rp22.015 Rp20.548	Min.: 1 Mult.: 1	PT	3892 K	2.252 kOhms	0.2 C	PCB Mount	Radial	- 80 C	+ 150 C	0.095 in	1.5 in	0.095 in	0.095 in	Bulk
NTC (Negative Temperature Coefficient) Thermistors THERMISTOR, U.S. SENS PT303J2 Littelfuse 1: Rp32.289 1.007In Stock	Mfr. Part No. PT303J2 Mouser Part No 803-PT303J2	Littelfuse	NTC (Negative Temperature Coefficient) Thermistors THERMISTOR, U.S. SENS Learn More about Littelfuse leaded thermistors	Datasheet	1.007In Stock	Rp32.289 Rp30.638 Rp28.620 Rp26.969 View Rp25.868 Rp23.666 Rp21.098	Min.: 1 Mult.: 1	PT	3892 K	30 kOhms	0.2 C	PCB Mount	Radial	- 80 C	+ 150 C	0.095 in	1.5 in	0.095 in	0.095 in	Bulk
NTC (Negative Temperature Coefficient) Thermistors NTC THERMISTOR 100K OHM 0.5C BEAD PW104J2 Littelfuse 1: Rp31.922 384In Stock	Mfr. Part No. PW104J2 Mouser Part No 803-PW104J2	Littelfuse	NTC (Negative Temperature Coefficient) Thermistors NTC THERMISTOR 100K OHM 0.5C BEAD Learn More about Littelfuse leaded thermistors	Datasheet	384In Stock	Rp31.922 Rp30.454 Rp25.684 Rp25.134 View Rp23.299 Rp22.749 Rp19.447 Rp18.713 Rp17.631	Min.: 1 Mult.: 1	PW	3892 K	100 kOhms	0.5 C	PCB Mount	Radial	- 80 C	+ 150 C	0.095 in	1.5 in	0.095 in	0.095 in	Bulk
NTC (Negative Temperature Coefficient) Thermistors NTC THERMISTOR 10K OHM 1.0C BEAD PX103J2 Littelfuse 1: Rp23.666 223In Stock	Mfr. Part No. PX103J2 Mouser Part No 803-PX103J2	Littelfuse	NTC (Negative Temperature Coefficient) Thermistors NTC THERMISTOR 10K OHM 1.0C BEAD Learn More about Littelfuse leaded thermistors	Datasheet	223In Stock	Rp23.666 Rp22.566 Rp21.281 Rp20.181 View Rp18.291 Rp17.465 Rp16.897 Rp15.649	Min.: 1 Mult.: 1	PX	3892 K	10 kOhms	1 C	PCB Mount	Radial	- 80 C	+ 150 C	0.095 in	1.5 in	0.095 in	0.095 in	Bulk
NTC (Negative Temperature Coefficient) Thermistors THERMISTOR, U.S. SENS PT302J2 Littelfuse 1: Rp36.509 387In Stock Factory Special Order	Mfr. Part No. PT302J2 Mouser Part No 803-PT302J2 Factory Special Order	Littelfuse	NTC (Negative Temperature Coefficient) Thermistors THERMISTOR, U.S. SENS Learn More about Littelfuse leaded thermistors	Datasheet	387In Stock	Rp36.509 Rp34.674 Rp28.620 Rp26.602 View Rp25.501 Rp22.749 Rp21.832 Rp20.181	Min.: 1 Mult.: 1	PT	3892 K	3 kOhms	0.2 C	PCB Mount	Radial	- 80 C	+ 150 C	0.095 in	1.5 in	0.095 in	0.095 in	Bulk
NTC (Negative Temperature Coefficient) Thermistors THERMISTOR, U.S. SENS PT104J2 Littelfuse 1: Rp43.113 Non-Stocked Lead-Time 12 Weeks	Mfr. Part No. PT104J2 Mouser Part No 803-PT104J2	Littelfuse	NTC (Negative Temperature Coefficient) Thermistors THERMISTOR, U.S. SENS Learn More about Littelfuse leaded thermistors	Datasheet	Non-Stocked Lead-Time 12 Weeks	Rp43.113 Rp35.224 Rp28.620 Rp26.602 View Rp25.317 Rp22.749 Rp22.199 Rp20.914	Min.: 1 Mult.: 1	PT	3892 K	100 kOhms	0.2 C	PCB Mount	Radial	- 80 C	+ 150 C	0.095 in				Bulk
NTC (Negative Temperature Coefficient) Thermistors NTC THERMISTOR 100K OHM 1.0C BEAD PX104J2 Littelfuse 1: Rp35.041 Non-Stocked Lead-Time 12 Weeks	Mfr. Part No. PX104J2 Mouser Part No 803-PX104J2	Littelfuse	NTC (Negative Temperature Coefficient) Thermistors NTC THERMISTOR 100K OHM 1.0C BEAD Learn More about Littelfuse leaded thermistors	Datasheet	Non-Stocked Lead-Time 12 Weeks	Rp35.041 Rp26.969 Rp22.566 Rp22.015 View Rp19.997 Rp16.034 Rp15.979	Min.: 1 Mult.: 1	PX	3892 K	100 kOhms	1 C	PCB Mount	Radial	- 80 C	+ 150 C	0.095 in	1.5 in	0.095 in	0.095 in	Bulk
NTC (Negative Temperature Coefficient) Thermistors NTC THERMISTOR 20K OHM 1.0C BEAD PX203J2 Littelfuse 1: Rp23.666 Non-Stocked Lead-Time 12 Weeks	Mfr. Part No. PX203J2 Mouser Part No 803-PX203J2	Littelfuse	NTC (Negative Temperature Coefficient) Thermistors NTC THERMISTOR 20K OHM 1.0C BEAD Learn More about Littelfuse leaded thermistors	Datasheet	Non-Stocked Lead-Time 12 Weeks	Rp23.666 Rp22.566 Rp21.281 Rp20.181 View Rp18.291 Rp17.465 Rp16.933 Rp15.649	Min.: 1 Mult.: 1	PX	3892 K	20 kOhms	1 C	PCB Mount	Radial	- 80 C	+ 150 C	0.095 in	1.5 in	0.095 in	0.095 in	Bulk
NTC (Negative Temperature Coefficient) Thermistors NTC THERMISTOR 100K OHM 0.2C BEAD PT104R2 Littelfuse 1: Rp52.103 Non-Stocked Lead-Time 23 Weeks	Mfr. Part No. PT104R2 Mouser Part No 803-PT104R2	Littelfuse	NTC (Negative Temperature Coefficient) Thermistors NTC THERMISTOR 100K OHM 0.2C BEAD Learn More about Littelfuse leaded thermistors	Datasheet	Non-Stocked Lead-Time 23 Weeks	Rp52.103 Rp39.077 Rp34.674 Rp33.023 View Rp32.106 Rp28.987 Rp28.803 Rp27.886	Min.: 1 Mult.: 1	PT	4140 K	100 kOhms	0.2 C	PCB Mount	Radial	- 80 C	+ 150 C	0.095 in				Bulk
NTC (Negative Temperature Coefficient) Thermistors NTC THERMISTOR 6K OHM 0.2C BEAD PT602J2 Littelfuse 1: Rp43.113 Non-Stocked Lead-Time 22 Weeks	Mfr. Part No. PT602J2 Mouser Part No 803-PT602J2	Littelfuse	NTC (Negative Temperature Coefficient) Thermistors NTC THERMISTOR 6K OHM 0.2C BEAD Learn More about Littelfuse leaded thermistors	Datasheet	Non-Stocked Lead-Time 22 Weeks	Rp43.113 Rp35.224 Rp28.620 Rp26.602 View Rp25.317 Rp22.566 Rp21.648	Min.: 1 Mult.: 1	PT	3892 K	6 kOhms	0.2 C	PCB Mount	Radial	- 80 C	+ 150 C	0.095 in	1.5 in	0.095 in	0.095 in	Bulk
NTC (Negative Temperature Coefficient) Thermistors NTC THERMISTOR 10K OHM 0.5C BEAD PW103J2 Littelfuse 1: Rp28.253 Non-Stocked Lead-Time 14 Weeks	Mfr. Part No. PW103J2 Mouser Part No 803-PW103J2	Littelfuse	NTC (Negative Temperature Coefficient) Thermistors NTC THERMISTOR 10K OHM 0.5C BEAD Learn More about Littelfuse leaded thermistors	Datasheet	Non-Stocked Lead-Time 14 Weeks	Rp28.253 Rp26.969 Rp25.317 Rp24.217 View Rp23.483 Rp21.832 Rp20.364 Rp19.630 Rp18.346	Min.: 1 Mult.: 1	PW	3892 K	10 kOhms	0.5 C	PCB Mount	Radial	- 80 C	+ 150 C	0.095 in				Bulk
NTC (Negative Temperature Coefficient) Thermistors NTC THERMISTOR 50K OHM 0.5C BEAD PW503J2 Littelfuse 1: Rp39.994 Non-Stocked Lead-Time 19 Weeks	Mfr. Part No. PW503J2 Mouser Part No 803-PW503J2	Littelfuse	NTC (Negative Temperature Coefficient) Thermistors NTC THERMISTOR 50K OHM 0.5C BEAD Learn More about Littelfuse leaded thermistors	Datasheet	Non-Stocked Lead-Time 19 Weeks	Rp39.994 Rp30.821 Rp25.684 Rp25.134 View Rp22.933 Rp19.814 Rp19.630 Rp18.896	Min.: 1 Mult.: 1	PW	3892 K	50 kOhms	0.5 C	PCB Mount	Radial	- 80 C	+ 150 C	0.095 in	1.5 in	0.095 in	0.095 in	Bulk
NTC (Negative Temperature Coefficient) Thermistors NTC THERMISTOR 2.2K OHM 0.5C BEAD PW222J2 Littelfuse Non-Stocked	Mfr. Part No. PW222J2 Mouser Part No 803-PW222J2	Littelfuse	NTC (Negative Temperature Coefficient) Thermistors NTC THERMISTOR 2.2K OHM 0.5C BEAD Learn More about Littelfuse leaded thermistors	Datasheet	Non-Stocked		Request a Quote	PW	3892 K	2.252 kOhms	0.5 C	PCB Mount	Radial	- 80 C	+ 150 C	0.095 in	1.5 in	0.095 in	0.095 in	Bulk

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