Thermistors | Farnell® Ireland

Farnell offers a broad range of thermistors for temperature sensing, compensation and circuit protection applications across industrial, commercial and consumer electronics. These temperature-sensitive components provide reliable thermal monitoring and protection solutions for a wide range of electronic systems.

Thermistors are resistors whose resistance changes predictably with temperature. Available in both Negative Temperature Coefficient (NTC) and Positive Temperature Coefficient (PTC) types, they support applications ranging from temperature measurement and control to inrush current limiting and overcurrent protection. Key selection considerations include resistance value, operating temperature range, tolerance, response time and package style to meet specific design requirements.

Applications:

Temperature sensing and monitoring
Inrush current limiting
Battery management systems
Industrial automation equipment
Consumer electronics
HVAC and climate control systems

Manufacturer Part No	Order Code	Manufacturer / Description	Price For	Price (inc VAT)	PPTC Case Style	Thermistor Mounting	Disc Size	Voltage Rating	Resistance (25°C)	Holding Current	Approvals	Trip Current	Time to Trip	Fuse Shape	Current Rating Max	Lead Spacing	Diameter	Operating Temperature Min	Length	Operating Temperature Max	Thickness	Height	Product Range	Automotive Qualification Standard

B57238S0809M000	2768988 Data Sheet RoHS Date/Lot Code	TDK Thermistor ICL NTC 8 ohm -20% to +20% Radial Leaded B57238S0 Series	Each	1+ €1.130(€1.3899) 50+ €0.877(€1.0787) 100+ €0.816(€1.0037) 250+ €0.677(€0.8327) 500+ €0.625(€0.7688)	-	-	16mm	-	8ohm	-	CQC, IEC, UL, VDE	-	-	-	-	-	-	-	-	-	-	-	B57238S0	-
RGEF1400	1345958 Data Sheet RoHS Date/Lot Code	LITTELFUSE Resettable Fuse PPTC PolySwitch RGEF 16 VDC 14 A 23.8 A 9 s Rectangular	Each	1+ €1.230(€1.5129) 10+ €1.040(€1.2792) 25+ €0.941(€1.1574) 50+ €0.926(€1.139) 100+ €0.846(€1.0406) More Pricing...	-	Through Hole	-	16VDC	-	14A	-	23.8A	9s	Rectangular	100A	10.9mm	-	-40°C	23.5mm	85°C	3.5mm	27.9mm	PolySwitch RGEF	-
B57276K0123A027	3876639 Data Sheet RoHS Date/Lot Code	TDK THERMISTOR NTC 12K	Each	1000+ €4.270(€5.2521)	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-
3450RC 01570049	4698595	HONEYWELL THERMAL-COMMERCIAL THERMAL 02N5387	Each	1+ €47.690(€58.6587) 5+ €43.690(€53.7387) 10+ €37.130(€45.6699) 25+ €36.730(€45.1779) 50+ €36.330(€44.6859) More Pricing...	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-
ASMD250F-2	1876450 Data Sheet RoHS Date/Lot Code	LITTELFUSE Resettable Fuse PPTC 3425 (8763 Metric) PolySwitch ASMD Series 16 VDC 1.97 A 5 A 30 s	Each (Supplied on Cut Tape) Cut Tape	1+ €0.939(€1.155) 50+ €0.594(€0.7306) 100+ €0.548(€0.674) 250+ €0.531(€0.6531) 500+ €0.489(€0.6015) More Pricing...	3425 (8763 Metric)	-	-	16VDC	-	1.97A	-	5A	30s	-	40A	-	-	-40°C	-	85°C	-	-	PolySwitch ASMD Series	AEC-Q200
ASMD200F-2	1876449 Data Sheet RoHS Date/Lot Code	LITTELFUSE Resettable Fuse PPTC 3425 (8763 Metric) PolySwitch ASMD Series 16 VDC 1.73 A 3.93 A 30 s	Each (Supplied on Cut Tape) Cut Tape	1+ €0.893(€1.0984) 50+ €0.565(€0.695) 100+ €0.548(€0.674) 250+ €0.501(€0.6162) 500+ €0.461(€0.567) More Pricing...	3425 (8763 Metric)	-	-	16VDC	-	1.73A	-	3.93A	30s	-	40A	-	-	-40°C	-	85°C	-	-	PolySwitch ASMD Series	AEC-Q200
B59860C0160A070	9753222 Data Sheet RoHS Date/Lot Code	TDK THERMISTOR PTC	Each	1300+ €0.729(€0.8967)	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-
BK250-120-SZ	4072021 Data Sheet RoHS Date/Lot Code	YAGEO Resettable Fuse PPTC BK250 Series 250 VAC 120 mA 240 mA 5 s Rectangular	Each	1+ €0.221(€0.2718) 50+ €0.165(€0.203) 100+ €0.152(€0.187) 250+ €0.137(€0.1685) 500+ €0.127(€0.1562) More Pricing...	-	-	-	250VAC	-	120mA	-	240mA	5s	Rectangular	3A	5.1mm	-	-40°C	7mm	85°C	4.6mm	10.5mm	BK250 Series	-
SMD1812B200TFT	4072050 Data Sheet RoHS Date/Lot Code	YAGEO Resettable Fuse PPTC 1812 (4532 Metric) SMD1812 Series 8 VDC 2 A 3.5 A 2 s	Each (Supplied on Cut Tape) Cut Tape	5+ €0.186(€0.2288) 50+ €0.150(€0.1845) 250+ €0.133(€0.1636) 500+ €0.122(€0.1501) 1000+ €0.117(€0.1439) More Pricing...	1812 (4532 Metric)	-	-	8VDC	-	2A	-	3.5A	2s	-	100A	-	-	-40°C	-	85°C	-	-	SMD1812 Series	-
SMD1812B020TF-J	4072046 Data Sheet RoHS Date/Lot Code	YAGEO Resettable Fuse PPTC 1812 (4532 Metric) SMD1812 Series 60 VDC 200 mA 400 mA 2 s	Each (Supplied on Cut Tape) Cut Tape	1+ €0.135(€0.166) 50+ €0.0984(€0.121) 100+ €0.0931(€0.1145) 250+ €0.0873(€0.1074) 500+ €0.0822(€0.1011) More Pricing...	1812 (4532 Metric)	-	-	60VDC	-	200mA	-	400mA	2s	-	40A	-	-	-40°C	-	85°C	-	-	SMD1812 Series	-
E17350-000	3995190 Data Sheet RoHS Date/Lot Code	LITTELFUSE Resettable Fuse PPTC PolySwitch RUEF Series 30 VDC 2.5 A 5 A 10.3 s Rectangular	Each	500+ €0.329(€0.4047)	-	-	-	30VDC	-	2.5A	-	5A	10.3s	Rectangular	100A	5.8mm	-	-40°C	11.4mm	85°C	3mm	18.3mm	PolySwitch RUEF Series	-
SMD1206B005TF	4072032 Data Sheet RoHS Date/Lot Code	YAGEO Resettable Fuse PPTC 1206 (3216 Metric) SMD1206 Series 30 VDC 50 mA 150 mA 0.25 s	Each (Supplied on Cut Tape) Cut Tape	5+ €0.0886(€0.109) 50+ €0.0682(€0.0839) 250+ €0.0567(€0.0697) 500+ €0.0522(€0.0642) 1500+ €0.0487(€0.0599) More Pricing...	1206 (3216 Metric)	-	-	30VDC	-	50mA	-	150mA	0.25s	-	100A	-	-	-40°C	-	85°C	-	-	SMD1206 Series	-
SMD2016B050TF	4072052 Data Sheet RoHS Date/Lot Code	YAGEO Resettable Fuse PPTC 2016 (5041 Metric) SMD2016 Series 60 VDC 550 mA 1.1 A 5 s	Each (Supplied on Cut Tape) Cut Tape	1+ €0.256(€0.3149) 50+ €0.193(€0.2374) 100+ €0.178(€0.2189) 250+ €0.168(€0.2066) 500+ €0.153(€0.1882) More Pricing...	2016 (5041 Metric)	-	-	60VDC	-	550mA	-	1.1A	5s	-	20A	-	-	-40°C	-	85°C	-	-	SMD2016 Series	-
BK30-300-SZ	4072025 Data Sheet RoHS Date/Lot Code	YAGEO Resettable Fuse PPTC BK30 Series 30 VDC 3 A 6 A 10.8 s Rectangular	Each	1+ €0.388(€0.4772) 10+ €0.351(€0.4317) 50+ €0.293(€0.3604) 100+ €0.270(€0.3321) 200+ €0.255(€0.3136) More Pricing...	-	-	-	30VDC	-	3A	-	6A	10.8s	Rectangular	40A	5.1mm	-	-40°C	13.2mm	85°C	3.1mm	20.5mm	BK30 Series	-
SMD0805B075TF	4072027 Data Sheet RoHS Date/Lot Code	YAGEO Resettable Fuse PPTC 0805 (2012 Metric) SMD0805 Series 6 VDC 750 mA 1.5 A 0.2 s	Each (Supplied on Cut Tape) Cut Tape	10+ €0.111(€0.1365) 100+ €0.0965(€0.1187) 500+ €0.0852(€0.1048) 1000+ €0.0776(€0.0954) 2000+ €0.0744(€0.0915) More Pricing...	0805 (2012 Metric)	-	-	6VDC	-	750mA	-	1.5A	0.2s	-	40A	-	-	-40°C	-	85°C	-	-	SMD0805 Series	-
SMD1206B025TF/24	4072038 Data Sheet RoHS Date/Lot Code	YAGEO Resettable Fuse PPTC 1206 (3216 Metric) SMD1206 Series 24 VDC 250 mA 550 mA 0.08 s	Each (Supplied on Cut Tape) Cut Tape	10+ €0.0732(€0.090) 100+ €0.0603(€0.0742) 500+ €0.0517(€0.0636) 1000+ €0.0502(€0.0617) 2000+ €0.0487(€0.0599) More Pricing...	1206 (3216 Metric)	-	-	24VDC	-	250mA	-	550mA	0.08s	-	100A	-	-	-40°C	-	85°C	-	-	SMD1206 Series	-
BK250-400-SZ	4072022 Data Sheet RoHS Date/Lot Code	YAGEO Resettable Fuse PPTC BK250 Series 250 VAC 400 mA 800 mA 9 s Rectangular	Each	1+ €0.505(€0.6212) 10+ €0.465(€0.5719) 50+ €0.386(€0.4748) 100+ €0.339(€0.417) 200+ €0.306(€0.3764) More Pricing...	-	-	-	250VAC	-	400mA	-	800mA	9s	Rectangular	10A	5.1mm	-	-40°C	11.2mm	85°C	4.6mm	17mm	BK250 Series	-
SMD0805B110TF	4072031 Data Sheet RoHS Date/Lot Code	YAGEO Resettable Fuse PPTC 0805 (2012 Metric) SMD0805 Series 6 VDC 1.1 A 2 A 0.3 s	Each (Supplied on Cut Tape) Cut Tape	5+ €0.124(€0.1525) 50+ €0.0965(€0.1187) 250+ €0.0904(€0.1112) 500+ €0.0852(€0.1048) 1500+ €0.0776(€0.0954) More Pricing...	0805 (2012 Metric)	-	-	6VDC	-	1.1A	-	2A	0.3s	-	100A	-	-	-40°C	-	85°C	-	-	SMD0805 Series	-
BK30-110-SZ	4072024 Data Sheet RoHS Date/Lot Code	YAGEO Resettable Fuse PPTC BK30 Series 30 VDC 1.1 A 2.2 A 6.6 s Rectangular	Each	1+ €0.186(€0.2288) 50+ €0.137(€0.1685) 100+ €0.127(€0.1562) 250+ €0.114(€0.1402) 500+ €0.111(€0.1365) More Pricing...	-	-	-	30VDC	-	1.1A	-	2.2A	6.6s	Rectangular	40A	5.1mm	-	-40°C	7.4mm	85°C	3.1mm	14.2mm	BK30 Series	-
SMD1206B200TF	4072043 Data Sheet RoHS Date/Lot Code	YAGEO Resettable Fuse PPTC 1206 (3216 Metric) SMD1206 Series 6 VDC 2 A 3.5 A 1.5 s	Each (Supplied on Cut Tape) Cut Tape	5+ €0.0974(€0.1198) 50+ €0.0707(€0.087) 250+ €0.0662(€0.0814) 500+ €0.0624(€0.0768) 1000+ €0.0569(€0.070) More Pricing...	1206 (3216 Metric)	-	-	6VDC	-	2A	-	3.5A	1.5s	-	100A	-	-	-40°C	-	85°C	-	-	SMD1206 Series	-
SMD1812B010TF	4072045 Data Sheet RoHS Date/Lot Code	YAGEO Resettable Fuse PPTC 1812 (4532 Metric) SMD1812 Series 30 VDC 100 mA 300 mA 1.5 s	Each (Supplied on Cut Tape) Cut Tape	1+ €0.135(€0.166) 50+ €0.0992(€0.122) 100+ €0.0931(€0.1145) 250+ €0.0873(€0.1074) 500+ €0.0822(€0.1011) More Pricing...	1812 (4532 Metric)	-	-	30VDC	-	100mA	-	300mA	1.5s	-	100A	-	-	-40°C	-	85°C	-	-	SMD1812 Series	-
16R1000GMR	3995195 Data Sheet RoHS Date/Lot Code	LITTELFUSE Resettable Fuse PPTC POLY-FUSE 16R Series 16 VDC 10 A 17 A 6 s Rectangular	Each (Supplied on Cut Tape) Cut Tape	1000+ €0.798(€0.9815)	-	-	-	16VDC	-	10A	-	17A	6s	Rectangular	100A	5.1mm	-	-40°C	16.5mm	85°C	3mm	25.2mm	POLY-FUSE 16R Series	-
SMD1812B260TF/16	4072051 Data Sheet RoHS Date/Lot Code	YAGEO Resettable Fuse PPTC 1812 (4532 Metric) SMD1812 Series 16 VDC 2.6 A 5 A 5 s	Each (Supplied on Cut Tape) Cut Tape	1+ €0.197(€0.2423) 50+ €0.149(€0.1833) 100+ €0.139(€0.171) 250+ €0.131(€0.1611) 500+ €0.120(€0.1476) More Pricing...	1812 (4532 Metric)	-	-	16VDC	-	2.6A	-	5A	5s	-	100A	-	-	-40°C	-	85°C	-	-	SMD1812 Series	-
MF-RX040/72-0	1652188 Data Sheet RoHS	BOURNS Resettable Fuse PPTC 72 VDC 400 mA 800 mA 3.9 s Round	Each	5+ €0.510(€0.6273) 50+ €0.453(€0.5572) 100+ €0.422(€0.5191) 250+ €0.391(€0.4809) 500+ €0.337(€0.4145) More Pricing...	-	Through Hole	-	72VDC	-	400mA	-	800mA	3.9s	Round	40A	5.1mm	7.4mm	-40°C	-	85°C	3.1mm	13.7mm	-	-
MF-RX075/72-0	1652191 Data Sheet RoHS	BOURNS Resettable Fuse PPTC 72 VDC 750 mA 1.5 A 6.3 s Round	Each	5+ €0.530(€0.6519) 50+ €0.420(€0.5166) 100+ €0.380(€0.4674) 250+ €0.330(€0.4059) 500+ €0.320(€0.3936) More Pricing...	-	Through Hole	-	72VDC	-	750mA	-	1.5A	6.3s	Round	40A	5.1mm	10.4mm	-40°C	-	85°C	3.1mm	16mm	-	-