Question 1

MTBF or MTTF?

Accepted Answer

MTTF is short for Mean Time to Failure, while MTBF is short for Mean Time Between Failures. Actually they are of same meaning, which is the measure of the average time LED driver or other product works before experiencing a failure.

Question 2

What is the difference between MTBF and lifetime of LED driver?

Accepted Answer

As mentioned in Q1, MTBF stands for Mean Time Between Failures, which measures the average time an LED driver or other product works before experiencing a failure. It represents the total operating hours of the LED driver divided by the number of failures. However, it does not represent the full expected lifetime of an LED driver. The product's lifetime refers to the length of time from the first use of the LED driver until the onset of aging. The lifetime of an LED driver is determined by its weakest component with the shortest expected lifespan. Unfortunately, LED drivers suppliers don't clearly specify how lifetime is calculated. Generally speaking, electrolytic capacitors have the shortest expected lifetime for an LED driver, and are often used as the expected lifetime.

Question 3

What are PF and PFC of LED drivers?

Accepted Answer

PF stands for "power factor," a number between 1 and 0. It represents the ratio of real power to apparent power in an AC (alternating current) power system. Now many LED drivers can achieve a PF of 0.95, and in some cases, even 0.99 or higher.

PFC is short for power factor correction. It is a technique used to improve the power factor of a circuit or power system. To maintain a high power factor, LED drivers must employ power factor correction (PFC). Its core goal is to optimize energy efficiency, reduce energy waste, and reduce the burden on the power system.

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Mean time between failure of LED driver and the importance of MTBF

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LED Street Light

Solar Street Light

Led Flood Light

Solar Flood Light

LED High Bay Light

High Mast Light

LED Traffic Light

LED Tunnel Light

LED Garden Light

LED Canopy Light

Led Bollard Light

Lighting Accessories

Smart Systems

Simulation Design

Smart Financing