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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 200W 11V 5% Uni-directional SMF11A Littelfuse 1: $0.48 5,528In Stock	Mfr. Part No. SMF11A Mouser Part No 576-SMF11A	Littelfuse	ESD Protection Diodes / TVS Diodes 200W 11V 5% Uni-directional Learn More about Littelfuse smf tvs diodes	Datasheet	5,528In Stock	Cut Tape $0.48 $0.238 $0.187 $0.145 Reel $0.098 View $0.134 $0.086 MouseReel Available	Min.: 1 Mult.: 1 : 3,000
ESD Protection Diodes / TVS Diodes SMF - CA 11V SMF11CA Littelfuse 1: $0.63 11,401In Stock	Mfr. Part No. SMF11CA Mouser Part No 576-SMF11CA	Littelfuse	ESD Protection Diodes / TVS Diodes SMF - CA 11V Learn More about Littelfuse smf tvs diodes	Datasheet	11,401In Stock	Cut Tape $0.63 $0.327 $0.244 $0.184 Reel $0.127 View $0.117 $0.114 $0.104 MouseReel Available	Min.: 1 Mult.: 1 : 3,000
ESD Protection Diodes / TVS Diodes SMF - A 120V SMF120A Littelfuse 1: $0.611 1,938In Stock 3,000Expected 2027/01/19	Mfr. Part No. SMF120A Mouser Part No 576-SMF120A	Littelfuse	ESD Protection Diodes / TVS Diodes SMF - A 120V Learn More about Littelfuse smf tvs diodes	Datasheet	1,938In Stock 3,000Expected 2027/01/19	Cut Tape $0.611 $0.283 $0.237 $0.187 Reel $0.117 View $0.169 $0.113 $0.11 MouseReel Available	Min.: 1 Mult.: 1 : 3,000
ESD Protection Diodes / TVS Diodes 200W 12V 5% Uni-directional SMF12A Littelfuse 1: $0.52 2,531In Stock 84,000On Order	Mfr. Part No. SMF12A Mouser Part No 576-SMF12A	Littelfuse	ESD Protection Diodes / TVS Diodes 200W 12V 5% Uni-directional Learn More about Littelfuse smf tvs diodes	Datasheet	2,531In Stock 84,000On Order On Order Ship Dates Mfr. No: SMF12A Stock: 2,531 Can Dispatch Immediately On Order: 21,000 Expected 2026/11/18 27,000 Expected 2026/12/14 36,000 Expected 2027/01/12 Factory Lead Time: 20 Weeks	Cut Tape $0.52 $0.231 $0.202 $0.152 Reel $0.095 View $0.141 $0.087 $0.086 MouseReel Available	Min.: 1 Mult.: 1 : 3,000
ESD Protection Diodes / TVS Diodes 200W 14V 5% Uni-directional SMF14A Littelfuse 1: $0.52 8,600In Stock 12,000Expected 2027/02/11	Mfr. Part No. SMF14A Mouser Part No 576-SMF14A	Littelfuse	ESD Protection Diodes / TVS Diodes 200W 14V 5% Uni-directional Learn More about Littelfuse smf tvs diodes	Datasheet	8,600In Stock 12,000Expected 2027/02/11	Cut Tape $0.52 $0.238 $0.204 $0.156 Reel $0.106 View $0.133 $0.105 $0.095 $0.086 MouseReel Available	Min.: 1 Mult.: 1 : 3,000
ESD Protection Diodes / TVS Diodes SMF - A 150V SMF150A Littelfuse 1: $0.62 12,324In Stock	Mfr. Part No. SMF150A Mouser Part No 576-SMF150A	Littelfuse	ESD Protection Diodes / TVS Diodes SMF - A 150V Learn More about Littelfuse smf tvs diodes	Datasheet	12,324In Stock	Cut Tape $0.62 $0.298 $0.243 $0.193 Reel $0.126 View $0.174 $0.121 $0.109 $0.108 MouseReel Available	Min.: 1 Mult.: 1 : 3,000
ESD Protection Diodes / TVS Diodes SMF - A 160V SMF160A Littelfuse 1: $0.68 2,295In Stock	Mfr. Part No. SMF160A Mouser Part No 576-SMF160A	Littelfuse	ESD Protection Diodes / TVS Diodes SMF - A 160V Learn More about Littelfuse smf tvs diodes	Datasheet	2,295In Stock	Cut Tape $0.68 $0.533 $0.387 $0.334 $0.249 Reel $0.14 MouseReel Available	Min.: 1 Mult.: 1 : 3,000
ESD Protection Diodes / TVS Diodes 200W 17V 5% Uni-directional SMF17A Littelfuse 1: $0.52 9,493In Stock	Mfr. Part No. SMF17A Mouser Part No 576-SMF17A	Littelfuse	ESD Protection Diodes / TVS Diodes 200W 17V 5% Uni-directional Learn More about Littelfuse smf tvs diodes	Datasheet	9,493In Stock	Cut Tape $0.52 $0.238 $0.204 $0.156 Reel $0.098 View $0.143 $0.095 $0.086 MouseReel Available	Min.: 1 Mult.: 1 : 3,000
ESD Protection Diodes / TVS Diodes SMF - CA 17V SMF17CA Littelfuse 1: $0.59 3,305In Stock	Mfr. Part No. SMF17CA Mouser Part No 576-SMF17CA	Littelfuse	ESD Protection Diodes / TVS Diodes SMF - CA 17V Learn More about Littelfuse smf tvs diodes	Datasheet	3,305In Stock	Cut Tape $0.59 $0.272 $0.23 $0.18 Reel $0.127 View $0.15 $0.113 $0.109 $0.104 MouseReel Available	Min.: 1 Mult.: 1 : 3,000
ESD Protection Diodes / TVS Diodes SMF - A 200V SMF200A Littelfuse 1: $0.611 6,965In Stock	Mfr. Part No. SMF200A Mouser Part No 576-SMF200A	Littelfuse	ESD Protection Diodes / TVS Diodes SMF - A 200V Learn More about Littelfuse smf tvs diodes	Datasheet	6,965In Stock	Cut Tape $0.611 $0.283 $0.237 $0.187 $0.169 Reel $0.108 MouseReel Available	Min.: 1 Mult.: 1 : 3,000
ESD Protection Diodes / TVS Diodes 200W 20V 5% Uni-directional SMF20A Littelfuse 1: $0.461 263In Stock 54,000On Order	Mfr. Part No. SMF20A Mouser Part No 576-SMF20A	Littelfuse	ESD Protection Diodes / TVS Diodes 200W 20V 5% Uni-directional Learn More about Littelfuse smf tvs diodes	Datasheet	263In Stock 54,000On Order On Order Ship Dates Mfr. No: SMF20A Stock: 263 Can Dispatch Immediately On Order: 15,000 Expected 2027/03/04 39,000 Expected 2027/03/10 Factory Lead Time: 20 Weeks	Cut Tape $0.461 $0.238 $0.183 $0.156 Reel $0.098 View $0.143 $0.086 MouseReel Available	Min.: 1 Mult.: 1 : 3,000
ESD Protection Diodes / TVS Diodes SMF - A 220V SMF220A Littelfuse 1: $0.611 1,063In Stock	Mfr. Part No. SMF220A Mouser Part No 576-SMF220A	Littelfuse	ESD Protection Diodes / TVS Diodes SMF - A 220V Learn More about Littelfuse smf tvs diodes	Datasheet	1,063In Stock	Cut Tape $0.611 $0.283 $0.237 $0.187 Reel $0.117 View $0.169 $0.11 $0.108 MouseReel Available	Min.: 1 Mult.: 1 : 3,000
ESD Protection Diodes / TVS Diodes SMF - CA 22V SMF22CA Littelfuse 1: $0.59 5,885In Stock	Mfr. Part No. SMF22CA Mouser Part No 576-SMF22CA	Littelfuse	ESD Protection Diodes / TVS Diodes SMF - CA 22V Learn More about Littelfuse smf tvs diodes	Datasheet	5,885In Stock	Cut Tape $0.59 $0.272 $0.23 $0.18 Reel $0.113 View $0.164 $0.107 $0.104 MouseReel Available	Min.: 1 Mult.: 1 : 3,000
ESD Protection Diodes / TVS Diodes SMF - A 250V SMF250A Littelfuse 1: $0.65 2,661In Stock	Mfr. Part No. SMF250A Mouser Part No 576-SMF250A	Littelfuse	ESD Protection Diodes / TVS Diodes SMF - A 250V Learn More about Littelfuse smf tvs diodes	Datasheet	2,661In Stock	Cut Tape $0.65 $0.338 $0.252 $0.191 Reel $0.133 MouseReel Available	Min.: 1 Mult.: 1 : 3,000
ESD Protection Diodes / TVS Diodes SMF - CA 26V SMF26CA Littelfuse 1: $0.60 23In Stock 12,000Expected 2026/10/06	Mfr. Part No. SMF26CA Mouser Part No 576-SMF26CA	Littelfuse	ESD Protection Diodes / TVS Diodes SMF - CA 26V Learn More about Littelfuse smf tvs diodes	Datasheet	23In Stock 12,000Expected 2026/10/06	Cut Tape $0.60 $0.29 $0.236 $0.186 Reel $0.113 View $0.167 $0.107 $0.104 MouseReel Available	Min.: 1 Mult.: 1 : 3,000
ESD Protection Diodes / TVS Diodes 200W 28V 5% Uni-directional SMF28A Littelfuse 1: $0.54 8,155In Stock 24,000On Order	Mfr. Part No. SMF28A Mouser Part No 576-SMF28A	Littelfuse	ESD Protection Diodes / TVS Diodes 200W 28V 5% Uni-directional Learn More about Littelfuse smf tvs diodes	Datasheet	8,155In Stock 24,000On Order On Order Ship Dates Mfr. No: SMF28A Stock: 8,155 Can Dispatch Immediately On Order: 12,000 Expected 2027/02/16 12,000 Expected 2027/03/01 Factory Lead Time: 20 Weeks	Cut Tape $0.54 $0.254 $0.208 $0.16 Reel $0.104 View $0.147 $0.09 MouseReel Available	Min.: 1 Mult.: 1 : 3,000
ESD Protection Diodes / TVS Diodes SMF - CA 28V SMF28CA Littelfuse 1: $0.63 5,900In Stock 21,000Expected 2026/11/02	Mfr. Part No. SMF28CA Mouser Part No 576-SMF28CA	Littelfuse	ESD Protection Diodes / TVS Diodes SMF - CA 28V Learn More about Littelfuse smf tvs diodes	Datasheet	5,900In Stock 21,000Expected 2026/11/02	Cut Tape $0.63 $0.327 $0.244 $0.184 Reel $0.127 View $0.113 $0.107 $0.104 MouseReel Available	Min.: 1 Mult.: 1 : 3,000
ESD Protection Diodes / TVS Diodes 200W 30V 5% Uni-directional SMF30A Littelfuse 1: $0.50 30In Stock 429,000On Order	Mfr. Part No. SMF30A Mouser Part No 576-SMF30A	Littelfuse	ESD Protection Diodes / TVS Diodes 200W 30V 5% Uni-directional Learn More about Littelfuse smf tvs diodes	Datasheet	30In Stock 429,000On Order On Order Ship Dates Mfr. No: SMF30A Stock: 30 Can Dispatch Immediately On Order: 105,000 Expected 2026/12/23 105,000 Expected 2027/02/22 219,000 Expected 2027/03/24 Factory Lead Time: 20 Weeks	Cut Tape $0.50 $0.238 $0.194 $0.149 Reel $0.095 View $0.137 $0.094 $0.084 $0.079 MouseReel Available	Min.: 1 Mult.: 1 : 3,000
ESD Protection Diodes / TVS Diodes 200W 33V 5% Uni-directional SMF33A Littelfuse 1: $0.50 8,561In Stock 15,000Expected 2027/03/24	Mfr. Part No. SMF33A Mouser Part No 576-SMF33A	Littelfuse	ESD Protection Diodes / TVS Diodes 200W 33V 5% Uni-directional Learn More about Littelfuse smf tvs diodes	Datasheet	8,561In Stock 15,000Expected 2027/03/24	Cut Tape $0.50 $0.254 $0.187 $0.16 Reel $0.098 View $0.147 $0.09 $0.086 MouseReel Available	Min.: 1 Mult.: 1 : 3,000
ESD Protection Diodes / TVS Diodes SMF - CA 33V SMF33CA Littelfuse 1: $0.59 3,412In Stock 30,000On Order	Mfr. Part No. SMF33CA Mouser Part No 576-SMF33CA	Littelfuse	ESD Protection Diodes / TVS Diodes SMF - CA 33V Learn More about Littelfuse smf tvs diodes	Datasheet	3,412In Stock 30,000On Order On Order Ship Dates Mfr. No: SMF33CA Stock: 3,412 Can Dispatch Immediately On Order: 15,000 Expected 2026/12/23 15,000 Expected 2027/01/11 Factory Lead Time: 18 Weeks	Cut Tape $0.59 $0.272 $0.229 $0.18 Reel $0.114 View $0.164 $0.104 MouseReel Available	Min.: 1 Mult.: 1 : 3,000
ESD Protection Diodes / TVS Diodes 200W 36V 5% Uni-directional SMF36A Littelfuse 1: $0.461 12,163In Stock 66,000On Order	Mfr. Part No. SMF36A Mouser Part No 576-SMF36A	Littelfuse	ESD Protection Diodes / TVS Diodes 200W 36V 5% Uni-directional Learn More about Littelfuse smf tvs diodes	Datasheet	12,163In Stock 66,000On Order On Order Ship Dates Mfr. No: SMF36A Stock: 12,163 Can Dispatch Immediately On Order: 36,000 Expected 2026/12/22 30,000 Expected 2027/01/05 Factory Lead Time: 20 Weeks	Cut Tape $0.461 $0.286 $0.176 $0.148 $0.13 Reel $0.086 MouseReel Available	Min.: 1 Mult.: 1 : 3,000
ESD Protection Diodes / TVS Diodes SMF - CA 40V SMF40CA Littelfuse 1: $0.60 826In Stock 18,000Expected 2027/01/11	Mfr. Part No. SMF40CA Mouser Part No 576-SMF40CA	Littelfuse	ESD Protection Diodes / TVS Diodes SMF - CA 40V Learn More about Littelfuse smf tvs diodes	Datasheet	826In Stock 18,000Expected 2027/01/11	Cut Tape $0.60 $0.29 $0.236 $0.186 Reel $0.12 View $0.167 $0.117 $0.105 $0.104 MouseReel Available	Min.: 1 Mult.: 1 : 3,000
ESD Protection Diodes / TVS Diodes 200W 43V 5% Uni-directional SMF43A Littelfuse 1: $0.52 2,228In Stock 6,000On Order	Mfr. Part No. SMF43A Mouser Part No 576-SMF43A	Littelfuse	ESD Protection Diodes / TVS Diodes 200W 43V 5% Uni-directional Learn More about Littelfuse smf tvs diodes	Datasheet	2,228In Stock 6,000On Order On Order Ship Dates Mfr. No: SMF43A Stock: 2,228 Can Dispatch Immediately On Order: 3,000 Expected 2027/01/12 3,000 Expected 2027/02/24 Factory Lead Time: 20 Weeks	Cut Tape $0.52 $0.238 $0.204 $0.156 Reel $0.098 View $0.143 $0.095 $0.086 MouseReel Available	Min.: 1 Mult.: 1 : 3,000
ESD Protection Diodes / TVS Diodes SMF - CA 45V SMF45CA Littelfuse 1: $0.65 1,262In Stock 3,000Expected 2027/02/03	Mfr. Part No. SMF45CA Mouser Part No 576-SMF45CA	Littelfuse	ESD Protection Diodes / TVS Diodes SMF - CA 45V Learn More about Littelfuse smf tvs diodes	Datasheet	1,262In Stock 3,000Expected 2027/02/03	Cut Tape $0.65 $0.508 $0.371 $0.32 $0.238 Reel $0.134 MouseReel Available	Min.: 1 Mult.: 1 : 3,000
ESD Protection Diodes / TVS Diodes 200W 48V 5% Uni-directional SMF48A Littelfuse 1: $0.511 2,450In Stock 33,000On Order	Mfr. Part No. SMF48A Mouser Part No 576-SMF48A	Littelfuse	ESD Protection Diodes / TVS Diodes 200W 48V 5% Uni-directional Learn More about Littelfuse smf tvs diodes	Datasheet	2,450In Stock 33,000On Order On Order Ship Dates Mfr. No: SMF48A Stock: 2,450 Can Dispatch Immediately On Order: 9,000 Expected 2026/10/26 9,000 Expected 2026/12/31 15,000 Expected 2027/02/22 Factory Lead Time: 20 Weeks	Cut Tape $0.511 $0.254 $0.222 $0.166 Reel $0.104 View $0.152 $0.09 $0.086 MouseReel Available	Min.: 1 Mult.: 1 : 3,000

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