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Auxiliary Power Supply

Littelfuse offers numerous products designed for Auxiliary Power Supply, including Silicon Carbide (SiC) MOSFETs, gate drivers, and TVS diodes. The LSIC1MO170T0750 SiC MOSFET is a 1700V device optimized for high-frequency, high-efficiency applications and features a low 11nC gate charge, low 11.5pF output capacitance, and a low 29Ω gate resistance for high-frequency switching. The IX4351NE gate driver offers an internal negative charge regulator, providing a selectable negative gate drive bias for improved dV/dt immunity and faster turn-off. The TVS diodes include the SMF and 1.5SMC series designed to protect sensitive electronic equipment from voltage transients induced by lightning and other transient voltage events.

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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.
ESD Protection Diodes / TVS Diodes 1.5kW 12V 5% Uni-Directional 1.5SMC12A Littelfuse 1: $1.10 6,003In Stock	Mfr. Part # 1.5SMC12A Mouser Part # 576-1.5SMC12A	Littelfuse	ESD Protection Diodes / TVS Diodes 1.5kW 12V 5% Uni-Directional Learn More about Littelfuse tvsdiodes	Datasheet	6,003In Stock	Cut Tape $1.10 $0.505 $0.446 $0.335 Reel $0.222 View $0.327 $0.221 MouseReel Available	Min.: 1 Mult.: 1 : 3,000
ESD Protection Diodes / TVS Diodes 1.5kW 160V 5% Bi-Directional 1.5SMC160CA Littelfuse 1: $0.65 4,979In Stock	Mfr. Part # 1.5SMC160CA Mouser Part # 576-1.5SMC160CA	Littelfuse	ESD Protection Diodes / TVS Diodes 1.5kW 160V 5% Bi-Directional Learn More about Littelfuse tvsdiodes	Datasheet	4,979In Stock	Cut Tape $0.65 $0.55 $0.495 $0.39 Reel $0.271 View $0.352 $0.256 MouseReel Available	Min.: 1 Mult.: 1 : 3,000
ESD Protection Diodes / TVS Diodes 1.5kW 540V 5% Bi-Directional 1.5SMC540CA Littelfuse 1: $1.50 4,189In Stock	Mfr. Part # 1.5SMC540CA Mouser Part # 576-1.5SMC540CA	Littelfuse	ESD Protection Diodes / TVS Diodes 1.5kW 540V 5% Bi-Directional Learn More about Littelfuse tvsdiodes	Datasheet	4,189In Stock	Cut Tape $1.50 $0.746 $0.628 $0.492 Reel $0.346 View $0.446 $0.341 MouseReel Available	Min.: 1 Mult.: 1 : 3,000
ESD Protection Diodes / TVS Diodes SMF - CA 36V SMF36CA Littelfuse 1: $0.60 26,999In Stock	Mfr. Part # SMF36CA Mouser Part # 576-SMF36CA	Littelfuse	ESD Protection Diodes / TVS Diodes SMF - CA 36V Learn More about Littelfuse smf tvs diodes	Datasheet	26,999In Stock	Cut Tape $0.60 $0.272 $0.234 $0.18 Reel $0.113 View $0.173 $0.103 MouseReel Available	Min.: 1 Mult.: 1 : 3,000
ESD Protection Diodes / TVS Diodes SMF - CA 20V SMF20CA Littelfuse 1: $0.57 36,420In 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	36,420In Stock	Cut Tape $0.57 $0.272 $0.223 $0.18 Reel $0.102 View $0.15 $0.10 $0.098 $0.095 MouseReel Available	Min.: 1 Mult.: 1 : 3,000
ESD Protection Diodes / TVS Diodes 1.5kW 110V 5% Uni-Directional 1.5SMC110A Littelfuse 1: $0.56 6,373In Stock	Mfr. Part # 1.5SMC110A Mouser Part # 576-1.5SMC110A	Littelfuse	ESD Protection Diodes / TVS Diodes 1.5kW 110V 5% Uni-Directional Learn More about Littelfuse tvsdiodes	Datasheet	6,373In Stock	Cut Tape $0.56 $0.47 $0.42 $0.344 Reel $0.231 View $0.311 $0.23 $0.212 MouseReel Available	Min.: 1 Mult.: 1 : 3,000
ESD Protection Diodes / TVS Diodes 1.5kW 540V 5% Uni-Directional 1.5SMC540A Littelfuse 1: $1.43 4,096In Stock	Mfr. Part # 1.5SMC540A Mouser Part # 576-1.5SMC540A	Littelfuse	ESD Protection Diodes / TVS Diodes 1.5kW 540V 5% Uni-Directional Learn More about Littelfuse tvsdiodes	Datasheet	4,096In Stock	Cut Tape $1.43 $0.701 $0.599 $0.469 Reel $0.322 View $0.445 $0.315 MouseReel Available	Min.: 1 Mult.: 1 : 3,000
ESD Protection Diodes / TVS Diodes 1.5kW 9.1V 5% Bi-Directional 1.5SMC9.1CA Littelfuse 1: $0.58 4,727In Stock	Mfr. Part # 1.5SMC9.1CA Mouser Part # 576-1.5SMC9.1CA	Littelfuse	ESD Protection Diodes / TVS Diodes 1.5kW 9.1V 5% Bi-Directional Learn More about Littelfuse tvsdiodes	Datasheet	4,727In Stock	Cut Tape $0.58 $0.485 $0.434 $0.354 Reel $0.239 View $0.321 $0.238 $0.22 MouseReel Available	Min.: 1 Mult.: 1 : 3,000
ESD Protection Diodes / TVS Diodes 1.5kW 36V 5% Bi-Directional 1.5SMC36CA Littelfuse 1: $1.10 4,673In Stock	Mfr. Part # 1.5SMC36CA Mouser Part # 576-1.5SMC36CA	Littelfuse	ESD Protection Diodes / TVS Diodes 1.5kW 36V 5% Bi-Directional Learn More about Littelfuse tvsdiodes	Datasheet	4,673In Stock	Cut Tape $1.10 $0.506 $0.35 $0.274 Reel $0.224 View $0.273 $0.212 MouseReel Available	Min.: 1 Mult.: 1 : 3,000
ESD Protection Diodes / TVS Diodes 1.5kW 51V 5% Bi-Directional 1.5SMC51CA Littelfuse 1: $1.19 4,810In Stock	Mfr. Part # 1.5SMC51CA Mouser Part # 576-1.5SMC51CA	Littelfuse	ESD Protection Diodes / TVS Diodes 1.5kW 51V 5% Bi-Directional Learn More about Littelfuse tvsdiodes	Datasheet	4,810In Stock	Cut Tape $1.19 $0.567 $0.483 $0.382 $0.346 Reel $0.252 MouseReel Available	Min.: 1 Mult.: 1 : 3,000
ESD Protection Diodes / TVS Diodes 1.5kW 51V 5% Uni-Directional 1.5SMC51A Littelfuse 1: $1.08 2,984In Stock 3,000Expected 10/29/2026	Mfr. Part # 1.5SMC51A Mouser Part # 576-1.5SMC51A	Littelfuse	ESD Protection Diodes / TVS Diodes 1.5kW 51V 5% Uni-Directional Learn More about Littelfuse tvsdiodes	Datasheet	2,984In Stock 3,000Expected 10/29/2026	Cut Tape $1.08 $0.515 $0.44 $0.34 Reel $0.229 View $0.308 $0.228 $0.21 MouseReel Available	Min.: 1 Mult.: 1 : 3,000
ESD Protection Diodes / TVS Diodes 1.5kW 10V 5% Bi-Directional 1.5SMC10CA Littelfuse 1: $0.47 5,557In Stock	Mfr. Part # 1.5SMC10CA Mouser Part # 576-1.5SMC10CA	Littelfuse	ESD Protection Diodes / TVS Diodes 1.5kW 10V 5% Bi-Directional Learn More about Littelfuse tvsdiodes	Datasheet	5,557In Stock	Cut Tape $0.47 $0.462 $0.434 $0.354 Reel $0.239 View $0.321 $0.228 $0.22 MouseReel Available	Min.: 1 Mult.: 1 : 3,000
ESD Protection Diodes / TVS Diodes 1.5kW 170V 5% Uni-Directional 1.5SMC170A Littelfuse 1: $0.56 2,980In Stock	Mfr. Part # 1.5SMC170A Mouser Part # 576-1.5SMC170A	Littelfuse	ESD Protection Diodes / TVS Diodes 1.5kW 170V 5% Uni-Directional Learn More about Littelfuse tvsdiodes	Datasheet	2,980In Stock	Cut Tape $0.56 $0.438 $0.39 $0.299 Reel $0.261 View $0.297 $0.22 MouseReel Available	Min.: 1 Mult.: 1 : 3,000
ESD Protection Diodes / TVS Diodes 1.5kW 200V 5% Uni-Directional 1.5SMC200A Littelfuse 1: $1.03 3,745In Stock	Mfr. Part # 1.5SMC200A Mouser Part # 576-1.5SMC200A	Littelfuse	ESD Protection Diodes / TVS Diodes 1.5kW 200V 5% Uni-Directional Learn More about Littelfuse tvsdiodes	Datasheet	3,745In Stock	Cut Tape $1.03 $0.491 $0.427 $0.334 Reel $0.217 $0.212 MouseReel Available	Min.: 1 Mult.: 1 : 3,000
ESD Protection Diodes / TVS Diodes 1.5kW 100V 5% Bi-Directional 1.5SMC100CA Littelfuse 1: $0.80 4,158In Stock	Mfr. Part # 1.5SMC100CA Mouser Part # 576-1.5SMC100CA	Littelfuse	ESD Protection Diodes / TVS Diodes 1.5kW 100V 5% Bi-Directional Learn More about Littelfuse tvsdiodes	Datasheet	4,158In Stock	Cut Tape $0.80 $0.554 $0.461 $0.372 Reel $0.249 View $0.337 $0.231 MouseReel Available	Min.: 1 Mult.: 1 : 3,000
ESD Protection Diodes / TVS Diodes 1.5kW 16V 5% Bi-Directional 1.5SMC16CA Littelfuse 1: $0.60 4,570In Stock	Mfr. Part # 1.5SMC16CA Mouser Part # 576-1.5SMC16CA	Littelfuse	ESD Protection Diodes / TVS Diodes 1.5kW 16V 5% Bi-Directional Learn More about Littelfuse tvsdiodes	Datasheet	4,570In Stock	Cut Tape $0.60 $0.399 $0.344 $0.246 Reel $0.239 View $0.239 $0.22 MouseReel Available	Min.: 1 Mult.: 1 : 3,000
ESD Protection Diodes / TVS Diodes 1.5kW 20V 5% Uni-Directional 1.5SMC20A Littelfuse 1: $0.55 4,112In Stock	Mfr. Part # 1.5SMC20A Mouser Part # 576-1.5SMC20A	Littelfuse	ESD Protection Diodes / TVS Diodes 1.5kW 20V 5% Uni-Directional Learn More about Littelfuse tvsdiodes	Datasheet	4,112In Stock	Cut Tape $0.55 $0.514 $0.405 $0.335 Reel $0.219 View $0.317 $0.216 $0.21 MouseReel Available	Min.: 1 Mult.: 1 : 3,000
ESD Protection Diodes / TVS Diodes 1.5kW 250V 5% Bi-Directional 1.5SMC250CA Littelfuse 1: $1.14 2,868In Stock	Mfr. Part # 1.5SMC250CA Mouser Part # 576-1.5SMC250CA	Littelfuse	ESD Protection Diodes / TVS Diodes 1.5kW 250V 5% Bi-Directional Learn More about Littelfuse tvsdiodes	Datasheet	2,868In Stock	Cut Tape $1.14 $0.599 $0.496 $0.39 Reel $0.271 View $0.352 $0.27 $0.256 MouseReel Available	Min.: 1 Mult.: 1 : 3,000
ESD Protection Diodes / TVS Diodes 1.5kW 250V 5% Uni-Directional 1.5SMC250A Littelfuse 1: $1.11 7,518In Stock	Mfr. Part # 1.5SMC250A Mouser Part # 576-1.5SMC250A	Littelfuse	ESD Protection Diodes / TVS Diodes 1.5kW 250V 5% Uni-Directional Learn More about Littelfuse tvsdiodes	Datasheet	7,518In Stock	Cut Tape $1.11 $0.519 $0.452 $0.349 $0.331 Reel $0.243 MouseReel Available	Min.: 1 Mult.: 1 : 3,000
ESD Protection Diodes / TVS Diodes 1.5kW 27V 5% Uni-Directional 1.5SMC27A Littelfuse 1: $1.00 10,908In Stock	Mfr. Part # 1.5SMC27A Mouser Part # 576-1.5SMC27A	Littelfuse	ESD Protection Diodes / TVS Diodes 1.5kW 27V 5% Uni-Directional Learn More about Littelfuse tvsdiodes	Datasheet	10,908In Stock	Cut Tape $1.00 $0.515 $0.422 $0.33 Reel $0.242 View $0.308 $0.24 MouseReel Available	Min.: 1 Mult.: 1 : 3,000
ESD Protection Diodes / TVS Diodes 1.5kW 36V 5% Uni-Directional 1.5SMC36A Littelfuse 1: $1.10 4,837In Stock 6,000Expected 11/23/2026	Mfr. Part # 1.5SMC36A Mouser Part # 576-1.5SMC36A	Littelfuse	ESD Protection Diodes / TVS Diodes 1.5kW 36V 5% Uni-Directional Learn More about Littelfuse tvsdiodes	Datasheet	4,837In Stock 6,000Expected 11/23/2026	Cut Tape $1.10 $0.506 $0.448 $0.345 Reel $0.237 MouseReel Available	Min.: 1 Mult.: 1 : 3,000
ESD Protection Diodes / TVS Diodes 1.5kW 550V 5% Bi-Directional 1.5SMC550CA Littelfuse 1: $1.64 7,146In Stock 6,000Expected 4/1/2027	Mfr. Part # 1.5SMC550CA Mouser Part # 576-1.5SMC550CA	Littelfuse	ESD Protection Diodes / TVS Diodes 1.5kW 550V 5% Bi-Directional Learn More about Littelfuse tvsdiodes	Datasheet	7,146In Stock 6,000Expected 4/1/2027	Cut Tape $1.64 $0.791 $0.69 $0.552 $0.513 Reel $0.391 MouseReel Available	Min.: 1 Mult.: 1 : 3,000
ESD Protection Diodes / TVS Diodes 1.5kW 56V 5% Uni-Directional 1.5SMC56A Littelfuse 1: $1.08 11,137In Stock	Mfr. Part # 1.5SMC56A Mouser Part # 576-1.5SMC56A	Littelfuse	ESD Protection Diodes / TVS Diodes 1.5kW 56V 5% Uni-Directional Learn More about Littelfuse tvsdiodes	Datasheet	11,137In Stock	Cut Tape $1.08 $0.478 $0.421 $0.325 $0.321 Reel $0.24 MouseReel Available	Min.: 1 Mult.: 1 : 3,000
ESD Protection Diodes / TVS Diodes 1.5kW 82V 5% Bi-Directional 1.5SMC82CA Littelfuse 1: $1.14 9,253In Stock	Mfr. Part # 1.5SMC82CA Mouser Part # 576-1.5SMC82CA	Littelfuse	ESD Protection Diodes / TVS Diodes 1.5kW 82V 5% Bi-Directional Learn More about Littelfuse tvsdiodes	Datasheet	9,253In Stock	Cut Tape $1.14 $0.535 $0.465 $0.36 Reel $0.278 View $0.341 $0.256 $0.252 MouseReel Available	Min.: 1 Mult.: 1 : 3,000
ESD Protection Diodes / TVS Diodes SMF - CA 12V SMF12CA Littelfuse 1: $0.61 21,135In Stock 18,000Expected 10/19/2026	Mfr. Part # SMF12CA Mouser Part # 576-SMF12CA	Littelfuse	ESD Protection Diodes / TVS Diodes SMF - CA 12V Learn More about Littelfuse smf tvs diodes	Datasheet	21,135In Stock 18,000Expected 10/19/2026	Cut Tape $0.61 $0.272 $0.239 $0.18 Reel $0.113 $0.103 MouseReel Available	Min.: 1 Mult.: 1 : 3,000

Auxiliary Power Supply

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