Open LED protectors

Louise Smyth

Littelfuse has introduced the PLEDxN Series of Open LED Protectors.

These surface mount devices, which are designed for use with high-brightness, one-watt LEDs with a nominal 350mA current at 3V, provide a switching electronic shunt path when an LED in an LED string or array fails as an open circuit.

They are designed to reset automatically if the LED heals itself or the power is cycled.

Their small-footprint SOD-123FL package housing has one of the lowest height profiles (1.1 mm) of any device of this type, making it ideal for dense board applications that demand high layout flexibility.

Typical applications for PLEDxN Series of Open LED Protectors include street, subway, runway, and tunnel lighting, as well as headlights, roadside warning lights, and outdoor signage where high reliability and low maintenance are required.

PLEDxN Series Open LED Protectors offer these key benefits:

* Electronic shunt/bypass for open LEDs allows LED strings or arrays to continue to function even if one LED fails as an open circuit

* The small-footprint SOD-123FL package provides high layout flexibility, making them ideal for dense board applications

* Device resets automatically if the LED heals itself or is replaced, resulting in lower maintenance and higher reliability.