Littelfuse, Inc., a global leader in circuit protection, today announced the PLEDxN family of LED open circuit protectors. These surface mount devices are designed to work with high-brightness 1 watt LEDs with a nominal current of 350 mA at 3V, which provides a switched electronic shunt when an LED string or an LED in the array has an open circuit fault. It can be automatically reset after the LED can be recovered or the power is looped.
The small SOD-123FL package is the lowest (1.1 mm) of the same type of device and is ideal for dense boards where layout flexibility is critical.
Typical applications for the PLEDxN series of LED open circuit protectors include street, subway, airstrip and tunnel lighting, as well as headlights, roadside warning lights, and outdoor signs that require high reliability and low maintenance.
“The PLEDxN series offers higher reliability and lower maintenance requirements than other LED open-circuit protector solutions such as thyristor rectifiers (SCRs) and Zener diodes.†Littelfuse LED Open Circuit Protector Product Manager Meng Wang said. “This makes it an ideal choice for outdoor LED lighting or signage applications where durability is critical.â€
The PLEDxN series of LED open circuit protectors have the following key advantages:
• Electronic shunt/bypass for LED open circuits allows the entire LED string or array to continue to operate in the event of an open LED failure.
The small SOD-123FL package offers high layout flexibility and is ideal for dense board applications.
• After the LED is self-restored or replaced, the unit can be automatically re-set, reducing maintenance costs and increasing reliability.
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