Littelfuse, Inc. has introduced the 450W SD05 (unidirectional) and SD05C (bidirectional) Series General-purpose TVS Diode Arrays (SPA® Devices), which are designed to replace multilayer varistors (MLVs) for protecting electronic equipment from damage due to electrostatic discharge (ESD) and other transient events. Unlike ceramic devices, which have an inherent wear-out factor, SD05 and SD05C Series devices are made of silicon diodes, which allows them to absorb repetitive ESD strikes or surge transients safely without performance degradation. Their low dynamic resistance (0.5? for SD05, 0.6? for SD05C) provides up to a 50% reduction in clamping voltage when compared with competing technologies, and can safely dissipate induced surge currents up to 30A. Typical applications of these devices include buttons/keypads, switches, DC power ports, and various other low-speed I/Os in point-of-sale terminals, test equipment or instrumentation, medical equipment, desktop/notebook computers, servers, computer peripherals, etc.
The SD05 and SD05C Series TVS Diode Arrays offer these features:
- Lightning: IEC61000-4-5, 30A (tp=8/20?s); ESD: IEC61000-4-2, ±30kV contact discharge
- Low dynamic resistance of only 0.5? (SD05) and 0.6? (SD05C)
- Low leakage of 1µA max.
- No inherent wear-out factor
- SOD-323 package fits existing 0805 PCB footprints
The SD05 and SD05C Series TVS Diode Arrays are available in quantities of 3,000 in tape and reel packaging. Samples are available now for bulk orders; sample requests can be placed through authorized Littelfuse distributors worldwide.
