How long do LEDs last?

Good LED lighting lasts an average of 25,000 to 50,000 burning hours; professional luminaires sometimes even longer. An LED rarely fails suddenly, but gradually gives less light. Its lifespan is therefore stated as the point at which the LED still gives a certain percentage of its original light output.

What do L70 and L80 mean?

Manufacturers often state the lifespan with an L value. L70 means the number of hours after which the LED still gives 70% of its original light output. L80 means 80%. A rating such as "50,000 hours L70" therefore means that the lamp still gives 70% of its light after 50,000 hours.

How many years is that?

What determines the lifespan of an LED?

• Heat: the hotter the LED chip, the faster it ages. Good cooling is therefore essential.
• The driver: the electronics that power the LED are often the first component to fail. A quality driver extends the lifespan.
• Environment: moisture, dust and high ambient temperatures shorten the lifespan. So choose a suitable IP rating.
• Switching and dimming: LED copes well with frequent switching, but an unsuitable dimmer can damage the driver.

Tips for a long lifespan

Do not use LED bulbs in fully enclosed fittings unless the bulb is suitable for this, choose a dimmer that is suitable for LED, and for outdoor use and damp areas choose luminaires with an appropriate IP rating. In professional spaces such as warehouses, it pays to choose quality luminaires such as LED panels and LED high bay lighting with a good driver.

Frequently asked questions

Does an LED bulb fail suddenly?

Usually not. An LED gradually gives less light. If a lamp suddenly stops working, the driver is often the cause.

What does 50,000 hours L70 mean?

That after 50,000 burning hours the LED still gives at least 70% of its original light.

Does LED last less long if I switch it on and off often?

No, LED copes well with frequent switching, unlike fluorescent tubes and compact fluorescent bulbs.