Littelfuse has introduced the SD and SD-C series of 450 W discrete unidirectional and bidirectional transient voltage suppression (TVS) diodes. Designed to protect against destructive electrostatic discharges (ESD) and lightning-induced surge currents, these fast-acting parts are ideal for replacing multilayer varistors (MLVs) in low-speed and DC applications because they can safely absorb repetitive ESD strikes at ±30 kV without performance degradation and safely dissipate up to 30 A of surge current.
Their low dynamic resistance provides up to a 50% reduction in clamping voltage compared to competing technologies, making them ideal for protecting buttons, switches, power ports and other low-speed I/Os in automotive electronics (where their AEC-Q101 qualification is necessary), test equipment, point-of-sale terminals, ultrabooks, servers and medical equipment.
The diodes are ideal for designers who need to sprinkle ESD and surge protection devices around a printed circuit board (PCB) where an array is not feasible. SOD-323 packaging gives added flexibility, such as the option to replace existing 0805 protection components without the need for a PCB or solder pad change.
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