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Factors Affecting the LED Bulb’s Lifespan

Posted on October 1, 2020 by Hugh Kollosche
Factors Affecting the LED Bulb’s Lifespan Traditional light bulbs end their lives when their filaments break. However, LED light bulbs behave differently. Although these bulbs last longer compared to their incandescent counterparts, LED bulbs do not last forever. From the environment to its power supply, here are the factors affecting an LED bulb’s lifespan: LED power supply LED bulbs have a lifespan of up to 50,000-hour which is equivalent to 10 years of use. They need a reliable power supply (commonly referred to as a driver), to maximise their power output and life expectancy, ensuring a power supply which help control and regulate voltage. Operating above the bulb’s recommended power requirements will reduce the bulb’s expected lifetime. Ambient temperature The temperature where the LED bulb is located can affect its lifespan. Enclosed light fixtures such as garden lights can increase the bulb’s ambient temperature which affects its chip and driver with higher ambient temperatures reducing the lifespan of a typical LED bulb. The bulb’s location must allow enough space for heat to dissipate to allow proper cooling. Capacitors and LED drivers An LED bulb’s driver uses plastic capacitors to store energy for the bulb’s use. If the bulb is used regularly, these capacitors can last for about a year. However, due to factors such as heat and ambient temperature, they may have shorter lifespans. Several companies are now using ceramic capacitors for their LED drivers. They have a higher tolerance to heat and last longer than plastic capacitors. Heat sink and bulb case temperatures LED lightbulbs, especially their chips and heat sinks, are sensitive to high temperatures. If a bulb’s case temperature is greater than 85°C, it will shorten its lifespan. When the case’s temperature reaches 105°C, the bulb may cease to operate. The bulb case’s temperature must always be lower than 85°C to operate normally. This also goes for its heat sink which helps draw heat away from the bulb to keep it below that breaking point. Proper thermal management is important to prolong the bulb’s operating life. Aside from the above-mentioned factors, mechanical stress, vibrations and extreme ambient temperatures can reduce an LED’s operating life. Theses bulbs must be placed in a dry and stable environment to maximise their life. This ensures users will get the best lifetime for their LED bulbs. Discount Lighting offers the best LED lighting solutions to suit your needs. For enquiries or more tips and tricks to keep your LEDs running for longer, check our online store or call (07) 3892 4020 today.