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Smart Thermostat Solutions

Littelfuse Smart Thermostat Solutions components allow designers to implement Internet of Things (IoT) solutions to boost energy efficiency and monitor energy usage. Littelfuse Smart Thermostat solutions complement other Smart Building features, including safety and security systems.

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Image	Part #	Mfr.	Description	Datasheet	Availability	Pricing (GBP) Filter the results in the table by unit price based on your quantity.	Qty.
Resettable Fuses - PPTC 1.85A 33V 2920 2920L185DR Littelfuse 1: £0.615 45,012In Stock 40,500Expected 24/12/2026	Mfr. Part No. 2920L185DR Mouser Part No 576-2920L185	Littelfuse	Resettable Fuses - PPTC 1.85A 33V 2920 Learn More about Littelfuse 2920l polyswitch resettable fuses	Datasheet	45,012In Stock 40,500Expected 24/12/2026	Cut Tape £0.615 £0.533 £0.468 £0.432 View Reel £0.251 £0.388 £0.358 £0.251 MouseReel Available	Min.: 1 Mult.: 1 : 1,500
Surface Mount Fuses 63V 1.25A FA 1206 04371.25WR Littelfuse 1: £1.17 3,028In Stock	Mfr. Part No. 04371.25WR Mouser Part No 576-04371.25WR	Littelfuse	Surface Mount Fuses 63V 1.25A FA 1206 Learn More about Littelfuse 437 smt fuses	Datasheet	3,028In Stock	Cut Tape £1.17 £1.04 £0.986 £0.796 View Reel £0.491 £0.682 £0.652 £0.566 £0.521 £0.491 MouseReel Available	Min.: 1 Mult.: 1 : 3,000
Surface Mount Fuses 63V 1.75A FA 1206 04371.75WR Littelfuse 1: £1.17 4,296In Stock	Mfr. Part No. 04371.75WR Mouser Part No 576-04371.75WR	Littelfuse	Surface Mount Fuses 63V 1.75A FA 1206 Learn More about Littelfuse 437 smt fuses	Datasheet	4,296In Stock	Cut Tape £1.17 £1.04 £0.986 £0.796 View Reel £0.491 £0.682 £0.652 £0.566 £0.521 £0.491 MouseReel Available	Min.: 1 Mult.: 1 : 3,000
Surface Mount Fuses 1206 SLO-BLO 3A SLIMLINE 0468003.WR Littelfuse 1: £1.26 3,253In Stock	Mfr. Part No. 0468003.WR Mouser Part No 576-0468003.WR	Littelfuse	Surface Mount Fuses 1206 SLO-BLO 3A SLIMLINE	Datasheet	3,253In Stock	Cut Tape £1.26 £1.11 £1.06 £0.856 View Reel £0.528 £0.733 £0.702 £0.608 £0.56 £0.528 MouseReel Available	Min.: 1 Mult.: 1 : 3,000
Varistors MLV Varistor 18V 0402 ML SERIES STD V18MLA0402NR Littelfuse 1: £0.285 14,104In Stock	Mfr. Part No. V18MLA0402NR Mouser Part No 576-V18MLA0402NH	Littelfuse	Varistors MLV Varistor 18V 0402 ML SERIES STD Learn More about Littelfuse Littelfuse Varistors	Datasheet	14,104In Stock	Cut Tape £0.285 £0.176 £0.153 £0.141 View Reel £0.102 £0.134 £0.128 £0.122 £0.115 £0.102 MouseReel Available	Min.: 1 Mult.: 1 : 10,000
Varistors 5.5 VDC .05J 21V-CL 185PF P V5.5MLA0402NR Littelfuse 1: £0.225 48,731In Stock 30,000Expected 22/12/2026	Mfr. Part No. V5.5MLA0402NR Mouser Part No 576-V5.5MLA0402NR	Littelfuse	Varistors 5.5 VDC .05J 21V-CL 185PF P Learn More about Littelfuse Littelfuse Varistors	Datasheet	48,731In Stock 30,000Expected 22/12/2026	Cut Tape £0.225 £0.139 £0.125 £0.118 View Reel £0.102 £0.114 £0.11 £0.106 £0.105 £0.102 MouseReel Available	Min.: 1 Mult.: 1 : 10,000
Surface Mount Fuses 32V FA 1206 3.5A 043703.5WR Littelfuse 1: £1.16 3,393In Stock	Mfr. Part No. 043703.5WR Mouser Part No 576-043703.5WR	Littelfuse	Surface Mount Fuses 32V FA 1206 3.5A Learn More about Littelfuse 437 smt fuses	Datasheet	3,393In Stock	Cut Tape £1.16 £0.969 £0.89 £0.739 View Reel £0.491 £0.682 £0.613 £0.565 £0.52 £0.491 MouseReel Available	Min.: 1 Mult.: 1 : 3,000
ESD Protection Diodes / TVS Diodes SMF - CA 20V SMF20CA Littelfuse 1: £0.458 33,340In Stock	Mfr. Part No. SMF20CA Mouser Part No 576-SMF20CA	Littelfuse	ESD Protection Diodes / TVS Diodes SMF - CA 20V Learn More about Littelfuse smf tvs diodes	Datasheet	33,340In Stock	Cut Tape £0.458 £0.204 £0.18 £0.135 Reel £0.079 View £0.134 £0.078 £0.074 £0.072 MouseReel Available	Min.: 1 Mult.: 1 : 3,000
Varistors 26V 100A 190pF V26MLA0805NT Littelfuse 1: £0.353 8,555In Stock	Mfr. Part No. V26MLA0805NT Mouser Part No 576-V26MLA0805NT	Littelfuse	Varistors 26V 100A 190pF Learn More about Littelfuse Littelfuse Varistors	Datasheet	8,555In Stock	Cut Tape £0.353 £0.221 £0.191 £0.177 View Reel £0.131 £0.169 £0.162 £0.155 £0.148 £0.131 MouseReel Available	Min.: 1 Mult.: 1 : 10,000
Varistors MLV VARISTOR 9V 0402 ML SERIES LOW CAP V9MLA0402LNR Littelfuse 1: £0.24 10,228In Stock	Mfr. Part No. V9MLA0402LNR Mouser Part No 576-V9MLA0402LNR	Littelfuse	Varistors MLV VARISTOR 9V 0402 ML SERIES LOW CAP Learn More about Littelfuse Littelfuse Varistors	Datasheet	10,228In Stock	Cut Tape £0.24 £0.15 £0.13 £0.12 View Reel £0.102 £0.114 £0.109 £0.104 £0.102 £0.102 MouseReel Available	Min.: 1 Mult.: 1 : 10,000
Surface Mount Fuses 1206 SLO-BLO 2.5A SLIMLINE HALIDE FREE 046802.5NR Littelfuse 1: £1.13 9,645In Stock	Mfr. Part No. 046802.5NR Mouser Part No 576-046802.5NR	Littelfuse	Surface Mount Fuses 1206 SLO-BLO 2.5A SLIMLINE HALIDE FREE	Datasheet	9,645In Stock	Cut Tape £1.13 £1.01 £0.863 £0.773 View Reel £0.681 £0.698 £0.681 £0.681 MouseReel Available	Min.: 1 Mult.: 1 : 5,000
ESD Protection Diodes / TVS Diodes 12V 100W SP12-01WTG-C-HV Littelfuse 1: £0.278 112,926In Stock	Mfr. Part No. SP12-01WTG-C-HV Mouser Part No 576-SP12-01WTG-C-HV	Littelfuse	ESD Protection Diodes / TVS Diodes 12V 100W Learn More about Littelfuse spxx hv	Datasheet	112,926In Stock	Cut Tape £0.278 £0.121 £0.106 £0.079 View Reel £0.04 £0.068 £0.059 £0.057 £0.04 MouseReel Available	Min.: 1 Mult.: 1 : 10,000
Resettable Fuses - PPTC 16V 5.0A-HD 40A SMD 2920L500/16MR-A Littelfuse 1: £2.04 1,181In Stock	Mfr. Part No. 2920L500/16MR-A Mouser Part No 576-2920L500/16MR-A	Littelfuse	Resettable Fuses - PPTC 16V 5.0A-HD 40A SMD Learn More about Littelfuse 2920l polyswitch resettable fuses	Datasheet	1,181In Stock	Cut Tape £2.04 £1.89 £1.56 £1.44 View Reel £0.943 £1.30 £1.20 £0.943 MouseReel Available	Min.: 1 Mult.: 1 : 1,000
Varistors 3.5 VDC .3J 13V-CL 120A P V3.5MLA0805NT Littelfuse 1: £0.353 10,000In Stock	Mfr. Part No. V3.5MLA0805NT Mouser Part No 576-V3.5MLA0805NT	Littelfuse	Varistors 3.5 VDC .3J 13V-CL 120A P Learn More about Littelfuse Littelfuse Varistors	Datasheet	10,000In Stock	Cut Tape £0.353 £0.221 £0.19 £0.177 View Reel £0.131 £0.169 £0.162 £0.155 £0.149 £0.131 MouseReel Available	Min.: 1 Mult.: 1 : 10,000
LED Protection Devices LED PROTECTOR Bi 9V QFN 3X3 2L RoHS PLED9Q12 Littelfuse 1: £0.969 5,719In Stock	Mfr. Part No. PLED9Q12 Mouser Part No 576-PLED9Q12	Littelfuse	LED Protection Devices LED PROTECTOR Bi 9V QFN 3X3 2L RoHS Learn More about Littelfuse pled led protectors	Datasheet	5,719In Stock	Cut Tape £0.969 £0.404 £0.299 Reel £0.299 MouseReel Available	Min.: 1 Mult.: 1 : 5,000
ESD Protection Diodes / TVS Diodes TVS 500W 7V DO-214AA TR13 SACB7.0 Littelfuse 1: £0.818 18,634In Stock	Mfr. Part No. SACB7.0 Mouser Part No 576-SACB7.0	Littelfuse	ESD Protection Diodes / TVS Diodes TVS 500W 7V DO-214AA TR13 Learn More about Littelfuse tvsdiodes	Datasheet	18,634In Stock	Cut Tape £0.818 £0.297 £0.255 £0.213 £0.21 Reel £0.182 MouseReel Available	Min.: 1 Mult.: 1 : 3,000
Resettable Fuses - PPTC SMDC030F-2 SMDC030F-2 Littelfuse 1: £0.533 6,033In Stock	Mfr. Part No. SMDC030F-2 Mouser Part No 650-SMDC030F-2	Littelfuse	Resettable Fuses - PPTC SMDC030F-2 Learn More about Littelfuse polyswitch smd ptcs	Datasheet	6,033In Stock	Cut Tape £0.533 £0.485 £0.404 £0.373 View Reel £0.212 £0.335 £0.308 £0.285 £0.27 £0.212 MouseReel Available	Min.: 1 Mult.: 1 : 4,000
Resettable Fuses - PPTC 2.50A 15V 2920 2920L250DR Littelfuse 1: £0.601 14,714In Stock	Mfr. Part No. 2920L250DR Mouser Part No 576-2920L250	Littelfuse	Resettable Fuses - PPTC 2.50A 15V 2920 Learn More about Littelfuse 2920l polyswitch resettable fuses	Datasheet	14,714In Stock	Cut Tape £0.601 £0.546 £0.468 £0.421 View Reel £0.317 £0.382 £0.349 £0.317 MouseReel Available	Min.: 1 Mult.: 1 : 1,500
ESD Protection Diodes / TVS Diodes SMF - A 180V SMF180A Littelfuse 1: £0.473 21,337In Stock	Mfr. Part No. SMF180A Mouser Part No 576-SMF180A	Littelfuse	ESD Protection Diodes / TVS Diodes SMF - A 180V Learn More about Littelfuse smf tvs diodes	Datasheet	21,337In Stock	Cut Tape £0.473 £0.212 £0.185 £0.141 Reel £0.085 View £0.079 £0.078 £0.077	Min.: 1 Mult.: 1 : 3,000
Varistors MULTI-LAYER VARISTOR SURFACE MOUNT V38MLA1812NT Littelfuse 1: £1.75 1,819In Stock	Mfr. Part No. V38MLA1812NT Mouser Part No 576-V38MLA1812NT	Littelfuse	Varistors MULTI-LAYER VARISTOR SURFACE MOUNT Learn More about Littelfuse Littelfuse Varistors	Datasheet	1,819In Stock	Cut Tape £1.75 £1.30 £1.19 £1.07 View Reel £0.882 £1.00 £0.969 £0.925 £0.882 £0.882 MouseReel Available	Min.: 1 Mult.: 1 : 4,000
Resettable Fuses - PPTC 6V 100A 1.4Ohms PICOSMDC035S-2 Littelfuse 1: £0.691 18,385In Stock	Mfr. Part No. PICOSMDC035S-2 Mouser Part No 650-PICOSMDC035S-2	Littelfuse	Resettable Fuses - PPTC 6V 100A 1.4Ohms Learn More about Littelfuse polyswitch smd ptcs	Datasheet	18,385In Stock	Cut Tape £0.691 £0.556 £0.469 £0.406 View Reel £0.288 £0.365 £0.337 £0.31 £0.288 £0.288 MouseReel Available	Min.: 1 Mult.: 1 : 4,000
Varistors Automotive Varistor AEC-Q200 V68MLA1206NHAUTO Littelfuse 1: £1.37 2,799In Stock	Mfr. Part No. V68MLA1206NHAUTO Mouser Part No 576-V68MLA1206NHAUTO	Littelfuse	Varistors Automotive Varistor AEC-Q200	Datasheet	2,799In Stock	Cut Tape £1.37 £0.925 £0.716 £0.669 View Reel £0.44 £0.591 £0.471 £0.44 MouseReel Available	Min.: 1 Mult.: 1 : 2,500
ESD Protection Diodes / TVS Diodes TVS 500W 8V DO-214AA TR13 SACB8.0 Littelfuse 1: £0.899 2,643In Stock	Mfr. Part No. SACB8.0 Mouser Part No 576-SACB8.0	Littelfuse	ESD Protection Diodes / TVS Diodes TVS 500W 8V DO-214AA TR13 Learn More about Littelfuse tvsdiodes	Datasheet	2,643In Stock	Cut Tape £0.899 £0.562 £0.369 £0.271 £0.247 Reel £0.188 MouseReel Available	Min.: 1 Mult.: 1 : 3,000
LED Protection Devices LED PROTECTOR 18V 1000mA QFN 3x3 PLED18Q12 Littelfuse 1: £1.01 3,600In Stock 5,000Expected 23/11/2026	Mfr. Part No. PLED18Q12 Mouser Part No 576-PLED18Q12	Littelfuse	LED Protection Devices LED PROTECTOR 18V 1000mA QFN 3x3 Learn More about Littelfuse pled led protectors	Datasheet	3,600In Stock 5,000Expected 23/11/2026	Cut Tape £1.01 £0.636 £0.419 £0.326 £0.299 Reel £0.299 MouseReel Available	Min.: 1 Mult.: 1 : 5,000
ESD Protection Diodes / TVS Diodes 24V 100W SP24-01WTG-C-HV Littelfuse 1: £0.292 18,327In Stock	Mfr. Part No. SP24-01WTG-C-HV Mouser Part No 576-SP24-01WTG-C-HV	Littelfuse	ESD Protection Diodes / TVS Diodes 24V 100W Learn More about Littelfuse spxx hv	Datasheet	18,327In Stock	Cut Tape £0.292 £0.155 £0.115 £0.091 Reel £0.041 View £0.068 £0.059 £0.057 £0.04 MouseReel Available	Min.: 1 Mult.: 1 : 10,000

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Smart Thermostat Solutions

Types of Circuit Protection