Littelfuse offers innovative circuit protection solutions. Wherever you look, Littelfuse is there. Streetlights, office buildings, cars, trucks, factories, computers, heating and cooling systems, electronic games, telecommunications equipment, even the satellites in the sky are protected by Littelfuse circuit protection products.

For the past 70 years, Littelfuse has designed, engineered, and invented circuit protection technology. Littelfuse strives to meet the ongoing need for smaller, faster, and safer circuit protection.

High Surge Current SIDACtor® Device
Solid-state protection devices with D-surge rating that protect telecommunications equipment in hostile environments. Withstand the simultaneous surges outline in GR 1089 lightning tests. These devices enable equipment to comply with various regulatory requirements including GR 1089, ITU K.20, K.21, and K.45, IEC 60950, UL 60950, and TIA-968-A (formerly known as FCC Part 68).