Lifespan of LED fluorescent lamps

The lifetime of LEDs using the example of LED fluorescent lamps

• Theoretically, i. if everything is processed properly, LED fluorescent lamps almost do not break.
• The LED itself is hardly limited in its durability.
• However, the LEDs are controlled by passive components, which are subject to a natural durability.
• For example, even good capacitors dry out after about 60,000 operating hours.

 

What else has a negative effect on the LED life?

•     Heat (too little heat dissipation at the bulb)
•     too much power (too high LED current to get a lot of light out)
•     Voltage peaks (usually in the power grid)
•     Unclean power grids (phase shifts, installation errors etc.)

 

What has a positive effect on the LED lifetime

•     cold
•     constant mains voltage
•     a "clean" power grid
•     good, durable passive components

 

 

Where should you not use an LED?

•     blast furnaces
•     glass industry
•     sauna
•     Bakery in the heat area
•     Cowsheds (ammonia problem)

 

Where is the use of LEDs recommended?

•     Cold stores (the light is immediately available in full brightness)
•     Wherever the classic T8 tube was used and "normal" conditions prevail, a change makes sense

 

Evaluation of LED life by standards

    For lifetime evaluation, the LM80, TM21, LM79 standards have been introduced.
    From the standard LM80 + TM21 the new standard L70 results.
    The aim of the L70 standard is to determine the time from which a light loss of 30% occurs at the LED.
    The standard LM80 is purely related to the LED