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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 (HKD) Filter the results in the table by unit price based on your quantity.	Qty.
ESD Protection Diodes / TVS Diodes 1.5kW 110V 5% Uni-Directional 1.5SMC110A Littelfuse 1: HK$4.60 6,373In Stock	Mfr. Part No. 1.5SMC110A Mouser Part No 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 HK$4.60 HK$3.86 HK$3.45 HK$2.83 Reel HK$1.90 View HK$2.56 HK$1.89 HK$1.74 MouseReel Available	Min.: 1 Mult.: 1 : 3,000
ESD Protection Diodes / TVS Diodes 1.5kW 540V 5% Bi-Directional 1.5SMC540CA Littelfuse 1: HK$12.33 4,189In Stock	Mfr. Part No. 1.5SMC540CA Mouser Part No 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 HK$12.33 HK$6.13 HK$5.16 HK$4.04 Reel HK$2.84 View HK$3.67 HK$2.80 MouseReel Available	Min.: 1 Mult.: 1 : 3,000
ESD Protection Diodes / TVS Diodes SMF - CA 36V SMF36CA Littelfuse 1: HK$4.93 2,999In Stock 9,000Expected 3/2/2027	Mfr. Part No. SMF36CA Mouser Part No 576-SMF36CA	Littelfuse	ESD Protection Diodes / TVS Diodes SMF - CA 36V Learn More about Littelfuse smf tvs diodes	Datasheet	2,999In Stock 9,000Expected 3/2/2027	Cut Tape HK$4.93 HK$2.24 HK$1.92 HK$1.48 Reel HK$0.929 View HK$1.42 HK$0.847 MouseReel Available	Min.: 1 Mult.: 1 : 3,000
ESD Protection Diodes / TVS Diodes 1.5kW 12V 5% Uni-Directional 1.5SMC12A Littelfuse 1: HK$9.04 5,903In Stock	Mfr. Part No. 1.5SMC12A Mouser Part No 576-1.5SMC12A	Littelfuse	ESD Protection Diodes / TVS Diodes 1.5kW 12V 5% Uni-Directional Learn More about Littelfuse tvsdiodes	Datasheet	5,903In Stock	Cut Tape HK$9.04 HK$4.15 HK$3.67 HK$2.75 HK$2.69 Reel HK$1.82 MouseReel Available	Min.: 1 Mult.: 1 : 3,000
ESD Protection Diodes / TVS Diodes 1.5kW 160V 5% Bi-Directional 1.5SMC160CA Littelfuse 1: HK$5.34 4,979In Stock	Mfr. Part No. 1.5SMC160CA Mouser Part No 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 HK$5.34 HK$4.52 HK$4.07 HK$3.21 Reel HK$2.23 View HK$2.89 HK$2.10 MouseReel Available	Min.: 1 Mult.: 1 : 3,000
ESD Protection Diodes / TVS Diodes SMF - CA 20V SMF20CA Littelfuse 1: HK$4.69 36,420In 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	36,420In Stock	Cut Tape HK$4.69 HK$2.24 HK$1.83 HK$1.48 Reel HK$0.838 View HK$1.23 HK$0.822 HK$0.806 HK$0.781 MouseReel Available	Min.: 1 Mult.: 1 : 3,000
ESD Protection Diodes / TVS Diodes 1.5kW 10V 5% Bi-Directional 1.5SMC10CA Littelfuse 1: HK$3.86 5,557In Stock	Mfr. Part No. 1.5SMC10CA Mouser Part No 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 HK$3.86 HK$3.80 HK$3.57 HK$2.91 Reel HK$1.96 View HK$2.64 HK$1.87 HK$1.81 MouseReel Available	Min.: 1 Mult.: 1 : 3,000
ESD Protection Diodes / TVS Diodes 1.5kW 170V 5% Uni-Directional 1.5SMC170A Littelfuse 1: HK$4.60 2,980In Stock	Mfr. Part No. 1.5SMC170A Mouser Part No 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 HK$4.60 HK$3.60 HK$3.21 HK$2.46 Reel HK$2.15 View HK$2.44 HK$1.81 MouseReel Available	Min.: 1 Mult.: 1 : 3,000
ESD Protection Diodes / TVS Diodes 1.5kW 200V 5% Uni-Directional 1.5SMC200A Littelfuse 1: HK$8.47 3,745In Stock	Mfr. Part No. 1.5SMC200A Mouser Part No 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 HK$8.47 HK$4.04 HK$3.51 HK$2.75 Reel HK$1.78 HK$1.74 MouseReel Available	Min.: 1 Mult.: 1 : 3,000
ESD Protection Diodes / TVS Diodes 1.5kW 100V 5% Bi-Directional 1.5SMC100CA Littelfuse 1: HK$6.58 4,158In Stock	Mfr. Part No. 1.5SMC100CA Mouser Part No 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 HK$6.58 HK$4.55 HK$3.79 HK$3.06 Reel HK$2.05 View HK$2.77 HK$1.90 MouseReel Available	Min.: 1 Mult.: 1 : 3,000
ESD Protection Diodes / TVS Diodes 1.5kW 16V 5% Bi-Directional 1.5SMC16CA Littelfuse 1: HK$4.93 4,570In Stock	Mfr. Part No. 1.5SMC16CA Mouser Part No 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 HK$4.93 HK$3.28 HK$2.83 HK$2.02 Reel HK$1.96 View HK$1.96 HK$1.81 MouseReel Available	Min.: 1 Mult.: 1 : 3,000
ESD Protection Diodes / TVS Diodes 1.5kW 250V 5% Bi-Directional 1.5SMC250CA Littelfuse 1: HK$9.37 2,868In Stock	Mfr. Part No. 1.5SMC250CA Mouser Part No 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 HK$9.37 HK$4.92 HK$4.08 HK$3.21 Reel HK$2.23 View HK$2.89 HK$2.22 HK$2.10 MouseReel Available	Min.: 1 Mult.: 1 : 3,000
ESD Protection Diodes / TVS Diodes 1.5kW 540V 5% Uni-Directional 1.5SMC540A Littelfuse 1: HK$11.75 3,446In Stock	Mfr. Part No. 1.5SMC540A Mouser Part No 576-1.5SMC540A	Littelfuse	ESD Protection Diodes / TVS Diodes 1.5kW 540V 5% Uni-Directional Learn More about Littelfuse tvsdiodes	Datasheet	3,446In Stock	Cut Tape HK$11.75 HK$5.76 HK$4.92 HK$3.86 Reel HK$2.65 View HK$3.66 HK$2.59 MouseReel Available	Min.: 1 Mult.: 1 : 3,000
ESD Protection Diodes / TVS Diodes 1.5kW 51V 5% Bi-Directional 1.5SMC51CA Littelfuse 1: HK$9.78 4,810In Stock	Mfr. Part No. 1.5SMC51CA Mouser Part No 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 HK$9.78 HK$4.66 HK$3.97 HK$3.14 HK$2.84 Reel HK$2.07 MouseReel Available	Min.: 1 Mult.: 1 : 3,000
ESD Protection Diodes / TVS Diodes 1.5kW 68V 5% Uni-Directional 1.5SMC68A Littelfuse 1: HK$9.04 3,212In Stock	Mfr. Part No. 1.5SMC68A Mouser Part No 576-1.5SMC68A	Littelfuse	ESD Protection Diodes / TVS Diodes 1.5kW 68V 5% Uni-Directional Learn More about Littelfuse tvsdiodes	Datasheet	3,212In Stock	Cut Tape HK$9.04 HK$4.23 HK$3.39 HK$2.66 HK$2.53 Reel HK$1.97 MouseReel Available	Min.: 1 Mult.: 1 : 3,000
ESD Protection Diodes / TVS Diodes 1.5kW 36V 5% Bi-Directional 1.5SMC36CA Littelfuse 1: HK$9.04 4,673In Stock	Mfr. Part No. 1.5SMC36CA Mouser Part No 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 HK$9.04 HK$4.16 HK$2.88 HK$2.25 Reel HK$1.84 View HK$2.24 HK$1.74 MouseReel Available	Min.: 1 Mult.: 1 : 3,000
ESD Protection Diodes / TVS Diodes 1.5kW 51V 5% Uni-Directional 1.5SMC51A Littelfuse 1: HK$8.88 2,964In Stock 3,000Expected 20/10/2026	Mfr. Part No. 1.5SMC51A Mouser Part No 576-1.5SMC51A	Littelfuse	ESD Protection Diodes / TVS Diodes 1.5kW 51V 5% Uni-Directional Learn More about Littelfuse tvsdiodes	Datasheet	2,964In Stock 3,000Expected 20/10/2026	Cut Tape HK$8.88 HK$4.23 HK$3.62 HK$2.79 Reel HK$1.88 View HK$2.53 HK$1.87 HK$1.73 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: HK$4.77 4,727In Stock	Mfr. Part No. 1.5SMC9.1CA Mouser Part No 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 HK$4.77 HK$3.99 HK$3.57 HK$2.91 Reel HK$1.96 View HK$2.64 HK$1.81 MouseReel Available	Min.: 1 Mult.: 1 : 3,000
ESD Protection Diodes / TVS Diodes SMF - CA 11V SMF11CA Littelfuse 1: HK$5.18 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 HK$5.18 HK$2.69 HK$2.01 HK$1.51 Reel HK$1.04 View HK$0.97 HK$0.937 HK$0.847 MouseReel Available	Min.: 1 Mult.: 1 : 3,000
ESD Protection Diodes / TVS Diodes 1.5kW 250V 5% Uni-Directional 1.5SMC250A Littelfuse 1: HK$9.12 7,518In Stock	Mfr. Part No. 1.5SMC250A Mouser Part No 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 HK$9.12 HK$4.27 HK$3.72 HK$2.87 HK$2.72 Reel HK$2.00 MouseReel Available	Min.: 1 Mult.: 1 : 3,000
ESD Protection Diodes / TVS Diodes 1.5kW 27V 5% Uni-Directional 1.5SMC27A Littelfuse 1: HK$8.22 10,908In Stock	Mfr. Part No. 1.5SMC27A Mouser Part No 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 HK$8.22 HK$4.23 HK$3.47 HK$2.71 Reel HK$1.99 View HK$2.53 HK$1.97 MouseReel Available	Min.: 1 Mult.: 1 : 3,000
ESD Protection Diodes / TVS Diodes 1.5kW 550V 5% Bi-Directional 1.5SMC550CA Littelfuse 1: HK$13.48 7,146In Stock 6,000Expected 1/4/2027	Mfr. Part No. 1.5SMC550CA Mouser Part No 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 1/4/2027	Cut Tape HK$13.48 HK$6.50 HK$5.67 HK$4.54 HK$4.22 Reel HK$3.21 MouseReel Available	Min.: 1 Mult.: 1 : 3,000
ESD Protection Diodes / TVS Diodes 1.5kW 56V 5% Uni-Directional 1.5SMC56A Littelfuse 1: HK$8.88 11,137In Stock	Mfr. Part No. 1.5SMC56A Mouser Part No 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 HK$8.88 HK$3.93 HK$3.46 HK$2.67 HK$2.64 Reel HK$1.97 MouseReel Available	Min.: 1 Mult.: 1 : 3,000
ESD Protection Diodes / TVS Diodes 1.5kW 56V 5% Bi-Directional 1.5SMC56CA Littelfuse 1: HK$9.54 11,795In Stock	Mfr. Part No. 1.5SMC56CA Mouser Part No 576-1.5SMC56CA	Littelfuse	ESD Protection Diodes / TVS Diodes 1.5kW 56V 5% Bi-Directional Learn More about Littelfuse tvsdiodes	Datasheet	11,795In Stock	Cut Tape HK$9.54 HK$5.15 HK$3.89 HK$3.01 Reel HK$2.16 MouseReel Available	Min.: 1 Mult.: 1 : 3,000
ESD Protection Diodes / TVS Diodes 1.5kW 82V 5% Bi-Directional 1.5SMC82CA Littelfuse 1: HK$9.37 9,253In Stock	Mfr. Part No. 1.5SMC82CA Mouser Part No 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 HK$9.37 HK$4.40 HK$3.82 HK$2.96 Reel HK$2.29 View HK$2.80 HK$2.10 HK$2.07 MouseReel Available	Min.: 1 Mult.: 1 : 3,000

Auxiliary Power Supply

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