1. Overview
An LED Open Circuit Protector is a key component used to maintain reliability in series-connected LED lighting systems. When one LED fails due to aging, thermal stress, or manufacturing defects, the open circuit condition can interrupt the entire LED string.
2. How Does an LED Open Circuit Protector Prevent LED String Failure?
The Semiware PLED06F LED Open Protector is specifically designed to solve LED string open circuit failures.
When a single LED in an LED string becomes open-circuited, the PLED06F quickly conducts, providing a bypass path for the failed LED, keeping the remaining LEDs operational and preventing the entire LED array from going out.
The PLED06F uses the SOD-123FL standard package and is similar to the Littelfuse PLED06N in terms of function and application positioning as an LED open-circuit protection product, which can be used as an alternative in LED lighting systems.
3. PLED06F vs PLED6N Parameter Comparison
| Parameter | Semiware PLED06F | Littelfuse PLED6N |
| Package | SOD-123FL | SOD-123FL |
| Breakdown Voltage | 6.0V ~ 16.0V | 5.5V ~ 7.5V |
| Holding Current | 5mA Min | 12mA Max |
| Switching Current | 100mA Max | 70mA Max |
| On-State Current | 1.0A Max | 1.0A Max |
| On-State Voltage | 1.2V Max @ IT=1A | 1.2V Max @ I=350mA |
| dV/dt | 250V/μs Max | 250V/μs Max |
From the parameter comparison, the PLED06F can be considered a replacement for the PLED6N, and it has certain advantages in IH, IS, and on-state capability.
Because its VBR range is wider than that of the PLED6N, for low-voltage LED string applications, the trigger voltage window needs to be confirmed.
4. PLED06F Open-Circuit Protector Applications
Industrial & Outdoor LED Lighting:
- Street Lights
- Warning Lights
- Smart Lighting
- Landscape Lighting
Automotive Lighting:
- Headlight
- Interior Lighting
- Ambient Lighting
Summary
The PLED06F can serve as an alternative to the Littelfuse PLED06N, providing a reliable protection option for automotive lighting, industrial lighting, and outdoor LED systems.
Semiware continues to provide reliable circuit protection solutions for automotive and industrial applications. Contact our team to discuss your LED protection requirements and find the right solution for your design.
