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Heat Pumps

Littelfuse provides a broad portfolio of components for heat pumps, including fuses, TVS diodes, gate drivers, and more. The heat pump market is growing quickly, driven by government initiatives to reduce greenhouse gas emissions and rising energy costs. With inverter-driven motors improving system efficiencies, heat pumps can now be used in a wide range of climates. Learn how Littelfuse technologies make heat pumps safer, more reliable, and more energy efficient. Heat pumps can be used in a wide range of climates due to the inverter-driven motors improving system efficiencies. These components are suitable for various applications such as energy management, security systems, HVAC systems, smoke detectors, and IoT-controlled appliances. Littelfuse offers protect, control, and sense technologies to improve buildings' reliability, safety, and energy efficiency.

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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.
Cartridge Fuses 250V 2.5A Fast Acting 5x20 021602.5MXESPP Littelfuse 1: $1.01 1,725In Stock	Mfr. Part No. 021602.5MXESPP Mouser Part No 576-021602.5MXESPP	Littelfuse	Cartridge Fuses 250V 2.5A Fast Acting 5x20 Learn More about Littelfuse 216SPfuse	Datasheet	1,725In Stock	$1.01 $0.834 $0.769 $0.64 View $0.588 $0.53 $0.49 $0.405	Min.: 1 Mult.: 1
Cartridge Fuses 250V 6.3A Fast Acting 021606.3MXEP Littelfuse 1: $2.99 847In Stock 1,000Expected 2026/11/30	Mfr. Part No. 021606.3MXEP Mouser Part No 576-021606.3MXEP	Littelfuse	Cartridge Fuses 250V 6.3A Fast Acting Learn More about Littelfuse 5x20 fuseholders	Datasheet	847In Stock 1,000Expected 2026/11/30	$2.99 $2.48 $1.63 $1.49 View $1.42 $1.34	Min.: 1 Mult.: 1
Cartridge Fuses 250V 1A Time Lag (Slo-Blo) 0218001.MXEP Littelfuse 1: $2.52 835In Stock	Mfr. Part No. 0218001.MXEP Mouser Part No 576-0218001.MXEP	Littelfuse	Cartridge Fuses 250V 1A Time Lag (Slo-Blo) Learn More about Littelfuse 5x20 fuseholders	Datasheet	835In Stock	$2.52 $2.11 $1.94 $1.60 View $1.48 $1.33 $1.23 $1.12	Min.: 1 Mult.: 1
Cartridge Fuses 250V 1.25A Time Lag (Slo-Blo) 02181.25MXEP Littelfuse 1: $2.54 718In Stock	Mfr. Part No. 02181.25MXEP Mouser Part No 576-02181.25MXEP	Littelfuse	Cartridge Fuses 250V 1.25A Time Lag (Slo-Blo) Learn More about Littelfuse 5x20 fuseholders	Datasheet	718In Stock	$2.54 $2.35 $2.23 $1.80 View $1.54 $1.49 $1.26 $1.16 $1.12	Min.: 1 Mult.: 1
ESD Protection Diodes / TVS Diodes 1500W 11.1V Bi-Directional 1.5KE13CA Littelfuse 1: $1.14 5,576In Stock	Mfr. Part No. 1.5KE13CA Mouser Part No 576-1.5KE13CA	Littelfuse	ESD Protection Diodes / TVS Diodes 1500W 11.1V Bi-Directional Learn More about Littelfuse 1.5ke series diodes	Datasheet	5,576In Stock	Cut Tape $1.14 $0.526 $0.461 $0.355 Reel $0.258	Min.: 1 Mult.: 1 : 1,200
ESD Protection Diodes / TVS Diodes 14Vso 11VAC 215A 5KP14A Littelfuse 1: $3.06 778In Stock	Mfr. Part No. 5KP14A Mouser Part No 576-5KP14A	Littelfuse	ESD Protection Diodes / TVS Diodes 14Vso 11VAC 215A Learn More about Littelfuse 5kp tvs diodes	Datasheet	778In Stock	Cut Tape $3.06 $1.90 $1.60 $1.26 Reel $1.23	Min.: 1 Mult.: 1 : 800
ESD Protection Diodes / TVS Diodes 15.3Vso 17.1Vbr P4KE18CA Littelfuse 1: $0.69 6,792In Stock	Mfr. Part No. P4KE18CA Mouser Part No 576-P4KE18CA	Littelfuse	ESD Protection Diodes / TVS Diodes 15.3Vso 17.1Vbr Learn More about Littelfuse tvsdiodes	Datasheet	6,792In Stock	Cut Tape $0.69 $0.333 $0.274 $0.208 View Reel $0.14 $0.18 $0.159 $0.14	Min.: 1 Mult.: 1 : 5,000
ESD Protection Diodes / TVS Diodes 64.1Vso 71.3Vbr P4KE75CA Littelfuse 1: $0.78 4,085In Stock	Mfr. Part No. P4KE75CA Mouser Part No 576-P4KE75CA	Littelfuse	ESD Protection Diodes / TVS Diodes 64.1Vso 71.3Vbr Learn More about Littelfuse tvsdiodes	Datasheet	4,085In Stock	Cut Tape $0.78 $0.358 $0.316 $0.242 Reel $0.202 View $0.209 $0.197	Min.: 1 Mult.: 1 : 5,000
ESD Protection Diodes / TVS Diodes 342V 400W 5% Uni-directional P4SMA400A Littelfuse 1: $0.84 7,870In Stock	Mfr. Part No. P4SMA400A Mouser Part No 576-P4SMA400A	Littelfuse	ESD Protection Diodes / TVS Diodes 342V 400W 5% Uni-directional Learn More about Littelfuse tvsdiodes	Datasheet	7,870In Stock	Cut Tape $0.84 $0.414 $0.298 $0.261 View Reel $0.163 $0.233 $0.215 $0.163 MouseReel Available	Min.: 1 Mult.: 1 : 5,000
ESD Protection Diodes / TVS Diodes 30.8Vr 600W 12A 5% Uni-Directional P6KE36A Littelfuse 1: $0.40 9,938In Stock	Mfr. Part No. P6KE36A Mouser Part No 576-P6KE36A	Littelfuse	ESD Protection Diodes / TVS Diodes 30.8Vr 600W 12A 5% Uni-Directional Learn More about Littelfuse p6ke diodes	Datasheet	9,938In Stock	Cut Tape $0.40 $0.22 $0.204 $0.173 View Reel $0.151 $0.172 $0.17 $0.151	Min.: 1 Mult.: 1 : 4,000
ESD Protection Diodes / TVS Diodes SA17A Uni-Directional SA17A Littelfuse 1: $0.75 7,386In Stock	Mfr. Part No. SA17A Mouser Part No 576-SA17A	Littelfuse	ESD Protection Diodes / TVS Diodes SA17A Uni-Directional Learn More about Littelfuse tvsdiodes	Datasheet	7,386In Stock	Cut Tape $0.75 $0.358 $0.30 $0.228 View Reel $0.177 $0.216 $0.195 $0.177	Min.: 1 Mult.: 1 : 4,000
ESD Protection Diodes / TVS Diodes SA26A Uni-Directional SA26A Littelfuse 1: $0.45 7,069In Stock	Mfr. Part No. SA26A Mouser Part No 576-SA26A	Littelfuse	ESD Protection Diodes / TVS Diodes SA26A Uni-Directional Learn More about Littelfuse tvsdiodes	Datasheet	7,069In Stock	Cut Tape $0.45 $0.247 $0.226 $0.19 View Reel $0.177 $0.186 $0.18 $0.177	Min.: 1 Mult.: 1 : 4,000
ESD Protection Diodes / TVS Diodes SA51A Uni-Directional SA51A Littelfuse 1: $0.53 5,114In Stock	Mfr. Part No. SA51A Mouser Part No 576-SA51A	Littelfuse	ESD Protection Diodes / TVS Diodes SA51A Uni-Directional Learn More about Littelfuse tvsdiodes	Datasheet	5,114In Stock	Cut Tape $0.53 $0.326 $0.287 $0.219 View Reel $0.177 $0.197 $0.177 $0.177	Min.: 1 Mult.: 1 : 4,000
ESD Protection Diodes / TVS Diodes 600W 27V AEC-Q101 5% Uni-Directional TPSMB27A Littelfuse 1: $0.55 4,439In Stock	Mfr. Part No. TPSMB27A Mouser Part No 576-TPSMB27A	Littelfuse	ESD Protection Diodes / TVS Diodes 600W 27V AEC-Q101 5% Uni-Directional Learn More about Littelfuse tpsmb tvs diodes	Datasheet	4,439In Stock	Cut Tape $0.55 $0.355 $0.311 $0.263 Reel $0.176 View $0.237 $0.174 MouseReel Available	Min.: 1 Mult.: 1 : 3,000
MOSFETs TO264 650V 120A N-CH X2CLASS IXTK120N65X2 IXYS 1: $28.53 407In Stock	Mfr. Part No. IXTK120N65X2 Mouser Part No 747-IXTK120N65X2	IXYS	MOSFETs TO264 650V 120A N-CH X2CLASS Learn More about IXYS x2 hiperfet mosfets	Datasheet	407In Stock	$28.53 $20.90	Min.: 1 Mult.: 1
MOSFETs TO220 650V 34A N-CH X2CLASS IXTP34N65X2 IXYS 1: $9.40 190In Stock	Mfr. Part No. IXTP34N65X2 Mouser Part No 747-IXTP34N65X2	IXYS	MOSFETs TO220 650V 34A N-CH X2CLASS Learn More about IXYS x2 hiperfet mosfets	Datasheet	190In Stock	$9.40 $5.22 $4.78	Min.: 1 Mult.: 1
ESD Protection Diodes / TVS Diodes 18V 400W BI-DIR SZ1SMA AEC-Q101 SZ1SMA18CAT3G Littelfuse 1: $0.811 8,294In Stock	Mfr. Part No. SZ1SMA18CAT3G Mouser Part No 863-SZ1SMA18CAT3G	Littelfuse	ESD Protection Diodes / TVS Diodes 18V 400W BI-DIR SZ1SMA AEC-Q101 Learn More about Littelfuse sz1sma tvs diodes	Datasheet	8,294In Stock	Cut Tape $0.811 $0.497 $0.32 $0.244 Reel $0.19 View $0.22 $0.19 $0.186 $0.171 MouseReel Available	Min.: 1 Mult.: 1 : 5,000
Cartridge Fuses 250V .25A Slo-Blo 0213.250MXP Littelfuse 1: $2.04 1,119In Stock	Mfr. Part No. 0213.250MXP Mouser Part No 576-0213.250MXP	Littelfuse	Cartridge Fuses 250V .25A Slo-Blo Learn More about Littelfuse 5x20 fuseholders	Datasheet	1,119In Stock	$2.04 $1.76 $1.22 $1.09 View $1.03 $0.97 $0.93 $0.919	Min.: 1 Mult.: 1
Cartridge Fuses 250 V 2.5A 5x20mm Fast Acting 021702.5MRET1P Littelfuse 1: $1.78 905In Stock	Mfr. Part No. 021702.5MRET1P Mouser Part No 576-021702.5MRET1P	Littelfuse	Cartridge Fuses 250 V 2.5A 5x20mm Fast Acting Learn More about Littelfuse 5x20 fuseholders	Datasheet	905In Stock	Cut Tape $1.78 $1.57 $1.49 $1.20 Reel $0.79 View $1.04 $0.991 $0.858 $0.745 MouseReel Available	Min.: 1 Mult.: 1 : 1,000
Cartridge Fuses 250V 250mA IEC TD LBC 0218.250TXP Littelfuse 1: $2.20 1,032In Stock	Mfr. Part No. 0218.250TXP Mouser Part No 576-0218.250TXP	Littelfuse	Cartridge Fuses 250V 250mA IEC TD LBC Learn More about Littelfuse 5x20 fuseholders	Datasheet	1,032In Stock	$2.20 $1.83 $1.69 $1.40 View $1.28 $1.16 $1.09 $1.06	Min.: 1 Mult.: 1
Cartridge Fuses 250V 8A Time Lag (Slo-Blo) 0218008.MXEP Littelfuse 1: $3.24 710In Stock	Mfr. Part No. 0218008.MXEP Mouser Part No 576-0218008.MXEP	Littelfuse	Cartridge Fuses 250V 8A Time Lag (Slo-Blo) Learn More about Littelfuse 5x20 fuseholders	Datasheet	710In Stock	$3.24 $2.69 $2.48 $2.06 View $1.90 $1.71 $1.57 $1.47	Min.: 1 Mult.: 1
Cartridge Fuses 250V 16A 5X20 PT TL LBC 0218016.MXEP Littelfuse 1: $3.83 626In Stock	Mfr. Part No. 0218016.MXEP Mouser Part No 576-0218016.MXEP	Littelfuse	Cartridge Fuses 250V 16A 5X20 PT TL LBC Learn More about Littelfuse 5x20 fuseholders	Datasheet	626In Stock	$3.83 $3.17 $2.93 $2.43 View $2.26 $2.02 $1.87 $1.77	Min.: 1 Mult.: 1
Cartridge Fuses 250V 6.3A Time Lag (Slo-Blo) 021806.3MXEP Littelfuse 1: $2.52 983In Stock	Mfr. Part No. 021806.3MXEP Mouser Part No 576-021806.3MXEP	Littelfuse	Cartridge Fuses 250V 6.3A Time Lag (Slo-Blo) Learn More about Littelfuse 5x20 fuseholders	Datasheet	983In Stock	$2.52 $2.09 $1.72 $1.51 View $1.43 $1.33 $1.23 $1.12	Min.: 1 Mult.: 1
Cartridge Fuses 250V .125A Slo-Blo 0219.125MXAP Littelfuse 1: $2.24 965In Stock	Mfr. Part No. 0219.125MXAP Mouser Part No 576-0219.125MXAP	Littelfuse	Cartridge Fuses 250V .125A Slo-Blo Learn More about Littelfuse 219 xa cartridge fuses	Datasheet	965In Stock	$2.24 $1.86 $1.72 $1.43 View $1.33 $1.17 $1.09 $1.00 $0.978	Min.: 1 Mult.: 1
Cartridge Fuses 250V 3.15A Medium Acting 02343.15MXP Littelfuse 1: $1.16 1,697In Stock	Mfr. Part No. 02343.15MXP Mouser Part No 576-02343.15MXP	Littelfuse	Cartridge Fuses 250V 3.15A Medium Acting Learn More about Littelfuse 5x20 fuseholders	Datasheet	1,697In Stock	$1.16 $1.03 $0.968 $0.82 View $0.763 $0.72 $0.695 $0.668 $0.656	Min.: 1 Mult.: 1

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