Circuit Protection – Mouser Puerto Rico

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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 (USD) Filter the results in the table by unit price based on your quantity.	Qty.
Resettable Fuses - PPTC 1.85A 33V 2920 2920L185DR Littelfuse 1: $0.82 A tariff of 10% may be applied if shipping to the United States. 43,533In Stock 40,500Expected 12/24/2026	Mfr. Part # 2920L185DR Mouser Part # 576-2920L185	Littelfuse	Resettable Fuses - PPTC 1.85A 33V 2920 Learn More about Littelfuse 2920l polyswitch resettable fuses	Datasheet	43,533In Stock 40,500Expected 12/24/2026	Cut Tape $0.82 $0.71 $0.623 $0.575 Reel $0.33 View $0.517 $0.477 $0.32 MouseReel Available A tariff of 10% may be applied if shipping to the United States.	Min.: 1 Mult.: 1 : 1,500
Resettable Fuses - PPTC 2.50A 15V 2920 2920L250DR Littelfuse 1: $0.80 A tariff of 30% may be applied if shipping to the United States. 14,714In Stock	Mfr. Part # 2920L250DR Mouser Part # 576-2920L250	Littelfuse	Resettable Fuses - PPTC 2.50A 15V 2920 Learn More about Littelfuse 2920l polyswitch resettable fuses	Datasheet	14,714In Stock	Cut Tape $0.80 $0.728 $0.623 $0.561 Reel $0.36 View $0.508 $0.465 $0.35 $0.339 MouseReel Available A tariff of 30% may be applied if shipping to the United States.	Min.: 1 Mult.: 1 : 1,500
ESD Protection Diodes / TVS Diodes SMF - A 180V SMF180A Littelfuse 1: $0.63 A tariff of 40% may be applied if shipping to the United States. 21,337In Stock	Mfr. Part # SMF180A Mouser Part # 576-SMF180A	Littelfuse	ESD Protection Diodes / TVS Diodes SMF - A 180V Learn More about Littelfuse smf tvs diodes	Datasheet	21,337In Stock	Cut Tape $0.63 $0.282 $0.247 $0.187 Reel $0.113 View $0.105 $0.103 $0.102 A tariff of 40% may be applied if shipping to the United States.	Min.: 1 Mult.: 1 : 3,000
Resettable Fuses - PPTC 6V 100A 1.4Ohms PICOSMDC035S-2 Littelfuse 1: $0.92 A tariff of 30% may be applied if shipping to the United States. 18,385In Stock	Mfr. Part # PICOSMDC035S-2 Mouser Part # 650-PICOSMDC035S-2	Littelfuse	Resettable Fuses - PPTC 6V 100A 1.4Ohms Learn More about Littelfuse polyswitch smd ptcs	Datasheet	18,385In Stock	Cut Tape $0.92 $0.741 $0.624 $0.541 View Reel $0.334 $0.486 $0.449 $0.413 $0.383 $0.334 MouseReel Available A tariff of 30% may be applied if shipping to the United States.	Min.: 1 Mult.: 1 : 4,000
Resettable Fuses - PPTC 16V 5.0A-HD 40A SMD 2920L500/16MR-A Littelfuse 1: $2.72 A tariff of 8% may be applied if shipping to the United States. 1,181In Stock	Mfr. Part # 2920L500/16MR-A Mouser Part # 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 $2.72 $2.51 $2.08 $1.92 Reel $1.23 View $1.73 $1.59 $1.20 MouseReel Available A tariff of 8% may be applied if shipping to the United States.	Min.: 1 Mult.: 1 : 1,000
Varistors 3.5 VDC .3J 13V-CL 120A P V3.5MLA0805NT Littelfuse 1: $0.47 A tariff of 30% may be applied if shipping to the United States. 10,000In Stock	Mfr. Part # V3.5MLA0805NT Mouser Part # 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 $0.47 $0.294 $0.254 $0.236 View Reel $0.174 $0.225 $0.215 $0.206 $0.199 $0.174 MouseReel Available A tariff of 30% may be applied if shipping to the United States.	Min.: 1 Mult.: 1 : 10,000
Varistors 5.5 VDC .05J 21V-CL 185PF P V5.5MLA0402NR Littelfuse 1: $0.30 A tariff of 8% may be applied if shipping to the United States. 47,631In Stock 30,000Expected 12/22/2026	Mfr. Part # V5.5MLA0402NR Mouser Part # 576-V5.5MLA0402NR	Littelfuse	Varistors 5.5 VDC .05J 21V-CL 185PF P Learn More about Littelfuse Littelfuse Varistors	Datasheet	47,631In Stock 30,000Expected 12/22/2026	Cut Tape $0.30 $0.185 $0.166 $0.157 View Reel $0.13 $0.152 $0.147 $0.141 $0.14 $0.13 MouseReel Available A tariff of 8% may be applied if shipping to the United States.	Min.: 1 Mult.: 1 : 10,000
Surface Mount Fuses 63V 1.25A FA 1206 04371.25WR Littelfuse 1: $1.56 A tariff of 10% may be applied if shipping to the United States. 3,028In Stock	Mfr. Part # 04371.25WR Mouser Part # 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 $1.56 $1.38 $1.31 $1.06 View Reel $0.627 $0.908 $0.869 $0.753 $0.694 $0.627 MouseReel Available A tariff of 10% may be applied if shipping to the United States.	Min.: 1 Mult.: 1 : 3,000
Surface Mount Fuses 63V 1.75A FA 1206 04371.75WR Littelfuse 1: $1.56 A tariff of 10% may be applied if shipping to the United States. 4,296In Stock	Mfr. Part # 04371.75WR Mouser Part # 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 $1.56 $1.38 $1.31 $1.06 View Reel $0.648 $0.908 $0.869 $0.753 $0.694 $0.648 MouseReel Available A tariff of 10% may be applied if shipping to the United States.	Min.: 1 Mult.: 1 : 3,000
Surface Mount Fuses 1206 SLO-BLO 3A SLIMLINE 0468003.WR Littelfuse 1: $1.68 A tariff of 10% may be applied if shipping to the United States. 3,253In Stock	Mfr. Part # 0468003.WR Mouser Part # 576-0468003.WR	Littelfuse	Surface Mount Fuses 1206 SLO-BLO 3A SLIMLINE	Datasheet	3,253In Stock	Cut Tape $1.68 $1.48 $1.41 $1.14 View Reel $0.698 $0.977 $0.935 $0.81 $0.746 $0.698 MouseReel Available A tariff of 10% may be applied if shipping to the United States.	Min.: 1 Mult.: 1 : 3,000
Varistors MLV Varistor 18V 0402 ML SERIES STD V18MLA0402NR Littelfuse 1: $0.38 A tariff of 8% may be applied if shipping to the United States. 12,404In Stock	Mfr. Part # V18MLA0402NR Mouser Part # 576-V18MLA0402NH	Littelfuse	Varistors MLV Varistor 18V 0402 ML SERIES STD Learn More about Littelfuse Littelfuse Varistors	Datasheet	12,404In Stock	Cut Tape $0.38 $0.235 $0.203 $0.188 View Reel $0.13 $0.179 $0.171 $0.163 $0.153 $0.13 MouseReel Available A tariff of 8% may be applied if shipping to the United States.	Min.: 1 Mult.: 1 : 10,000
Surface Mount Fuses 32V FA 1206 3.5A 043703.5WR Littelfuse 1: $1.55 A tariff of 10% may be applied if shipping to the United States. 3,393In Stock	Mfr. Part # 043703.5WR Mouser Part # 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 $1.55 $1.29 $1.19 $0.984 View Reel $0.627 $0.908 $0.816 $0.752 $0.693 $0.627 MouseReel Available A tariff of 10% may be applied if shipping to the United States.	Min.: 1 Mult.: 1 : 3,000
ESD Protection Diodes / TVS Diodes 400W 22V 5% Uni-Directional SMAJ22A Littelfuse 1: $0.34 A tariff of 40% may be applied if shipping to the United States. 42,135In Stock	Mfr. Part # SMAJ22A Mouser Part # 576-SMAJ22A	Littelfuse	ESD Protection Diodes / TVS Diodes 400W 22V 5% Uni-Directional Learn More about Littelfuse smaj tvs 400w diodes	Datasheet	42,135In Stock	Cut Tape $0.34 $0.162 $0.146 $0.115 Reel $0.081 View $0.113 $0.106 $0.07 MouseReel Available A tariff of 40% may be applied if shipping to the United States.	Min.: 1 Mult.: 1 : 5,000
ESD Protection Diodes / TVS Diodes SMF - CA 20V SMF20CA Littelfuse 1: $0.61 A tariff of 40% may be applied if shipping to the United States. 33,340In Stock	Mfr. Part # SMF20CA Mouser Part # 576-SMF20CA	Littelfuse	ESD Protection Diodes / TVS Diodes SMF - CA 20V Learn More about Littelfuse smf tvs diodes	Datasheet	33,340In Stock	Cut Tape $0.61 $0.272 $0.239 $0.18 Reel $0.105 View $0.178 $0.104 $0.099 $0.097 MouseReel Available A tariff of 40% may be applied if shipping to the United States.	Min.: 1 Mult.: 1 : 3,000
Varistors 26V 100A 190pF V26MLA0805NT Littelfuse 1: $0.47 A tariff of 30% may be applied if shipping to the United States. 8,555In Stock	Mfr. Part # V26MLA0805NT Mouser Part # 576-V26MLA0805NT	Littelfuse	Varistors 26V 100A 190pF Learn More about Littelfuse Littelfuse Varistors	Datasheet	8,555In Stock	Cut Tape $0.47 $0.294 $0.255 $0.236 View Reel $0.166 $0.225 $0.216 $0.206 $0.196 $0.166 MouseReel Available A tariff of 30% may be applied if shipping to the United States.	Min.: 1 Mult.: 1 : 10,000
Varistors MLV VARISTOR 9V 0402 ML SERIES LOW CAP V9MLA0402LNR Littelfuse 1: $0.32 A tariff of 8% may be applied if shipping to the United States. 10,228In Stock	Mfr. Part # V9MLA0402LNR Mouser Part # 576-V9MLA0402LNR	Littelfuse	Varistors MLV VARISTOR 9V 0402 ML SERIES LOW CAP Learn More about Littelfuse Littelfuse Varistors	Datasheet	10,228In Stock	Cut Tape $0.32 $0.20 $0.173 $0.16 View Reel $0.13 $0.152 $0.145 $0.138 $0.134 $0.13 MouseReel Available A tariff of 8% may be applied if shipping to the United States.	Min.: 1 Mult.: 1 : 10,000
LED Protection Devices LED PROTECTOR Bi 9V QFN 3X3 2L RoHS PLED9Q12 Littelfuse 1: $1.29 5,719In Stock	Mfr. Part # PLED9Q12 Mouser Part # 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 $1.29 $0.538 $0.394 $0.332 View Reel $0.275 $0.299 $0.294 $0.275 MouseReel Available	Min.: 1 Mult.: 1 : 5,000
ESD Protection Diodes / TVS Diodes TVS 500W 7V DO-214AA TR13 SACB7.0 Littelfuse 1: $1.09 A tariff of 40% may be applied if shipping to the United States. 18,634In Stock	Mfr. Part # SACB7.0 Mouser Part # 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 $1.09 $0.395 $0.34 $0.284 Reel $0.222 View $0.28 $0.22 $0.212 $0.202 MouseReel Available A tariff of 40% may be applied if shipping to the United States.	Min.: 1 Mult.: 1 : 3,000
Resettable Fuses - PPTC SMDC030F-2 SMDC030F-2 Littelfuse 1: $0.71 A tariff of 30% may be applied if shipping to the United States. 6,033In Stock	Mfr. Part # SMDC030F-2 Mouser Part # 650-SMDC030F-2	Littelfuse	Resettable Fuses - PPTC SMDC030F-2 Learn More about Littelfuse polyswitch smd ptcs	Datasheet	6,033In Stock	Cut Tape $0.71 $0.647 $0.538 $0.496 View Reel $0.282 $0.446 $0.411 $0.379 $0.359 $0.282 MouseReel Available A tariff of 30% may be applied if shipping to the United States.	Min.: 1 Mult.: 1 : 4,000
Surface Mount Fuses 1206 SLO-BLO 2.5A SLIMLINE HALIDE FREE 046802.5NR Littelfuse 1: $1.50 A tariff of 10% may be applied if shipping to the United States. 9,667In Stock	Mfr. Part # 046802.5NR Mouser Part # 576-046802.5NR	Littelfuse	Surface Mount Fuses 1206 SLO-BLO 2.5A SLIMLINE HALIDE FREE	Datasheet	9,667In Stock	Cut Tape $1.50 $1.35 $1.15 $1.03 View Reel $0.627 $0.93 $0.864 $0.773 $0.745 $0.627 MouseReel Available A tariff of 10% may be applied if shipping to the United States.	Min.: 1 Mult.: 1 : 5,000
ESD Protection Diodes / TVS Diodes 12V 100W SP12-01WTG-C-HV Littelfuse 1: $0.37 A tariff of 40% may be applied if shipping to the United States. 112,926In Stock	Mfr. Part # SP12-01WTG-C-HV Mouser Part # 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 $0.37 $0.162 $0.141 $0.105 Reel $0.054 View $0.091 $0.079 $0.076 $0.047 MouseReel Available A tariff of 40% may be applied if shipping to the United States.	Min.: 1 Mult.: 1 : 10,000
Varistors Automotive Varistor AEC-Q200 V68MLA1206NHAUTO Littelfuse 1: $1.83 A tariff of 30% may be applied if shipping to the United States. 2,799In Stock	Mfr. Part # V68MLA1206NHAUTO Mouser Part # 576-V68MLA1206NHAUTO	Littelfuse	Varistors Automotive Varistor AEC-Q200	Datasheet	2,799In Stock	Cut Tape $1.83 $1.23 $0.953 $0.891 View Reel $0.586 $0.787 $0.628 $0.586 MouseReel Available A tariff of 30% may be applied if shipping to the United States.	Min.: 1 Mult.: 1 : 2,500
LED Protection Devices LED PROTECTOR 18V 1000mA QFN 3x3 PLED18Q12 Littelfuse 1: $1.35 3,600In Stock 5,000Expected 12/21/2026	Mfr. Part # PLED18Q12 Mouser Part # 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 12/21/2026	Cut Tape $1.35 $0.846 $0.558 $0.434 View Reel $0.275 $0.375 $0.361 $0.275 MouseReel Available	Min.: 1 Mult.: 1 : 5,000
Resettable Fuses - PPTC 6V 2920 2.60A POLYFUSE 2920L260PR Littelfuse 1: $1.02 A tariff of 10% may be applied if shipping to the United States. 1,940In Stock	Mfr. Part # 2920L260PR Mouser Part # 576-2920L260PR	Littelfuse	Resettable Fuses - PPTC 6V 2920 2.60A POLYFUSE Learn More about Littelfuse 2920l polyswitch resettable fuses	Datasheet	1,940In Stock	Cut Tape $1.02 $0.816 $0.687 $0.596 Reel $0.456 View $0.536 $0.494 $0.395 MouseReel Available A tariff of 10% may be applied if shipping to the United States.	Min.: 1 Mult.: 1 : 2,000
ESD Protection Diodes / TVS Diodes 200W 28V 5% Uni-directional SMF28A-T13 Littelfuse 1: $0.62 A tariff of 40% may be applied if shipping to the United States. 6,430In Stock 10,000Expected 3/4/2027	Mfr. Part # SMF28A-T13 Mouser Part # 576-SMF28A-T13	Littelfuse	ESD Protection Diodes / TVS Diodes 200W 28V 5% Uni-directional Learn More about Littelfuse smf tvs diodes	Datasheet	6,430In Stock 10,000Expected 3/4/2027	Cut Tape $0.62 $0.286 $0.247 $0.184 $0.161 Reel $0.092 MouseReel Available A tariff of 40% may be applied if shipping to the United States.	Min.: 1 Mult.: 1 : 10,000

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Smart Thermostat Solutions

Types of Circuit Protection