LED Night Light bulbs typically last between 20,000 to 50,000 hours, with some high-quality products potentially exceeding this range under ideal conditions. Here's a detailed breakdown:
Theoretical Lifespan:
The theoretical lifespan of a single LED chip can reach 100,000 hours. However, when assembled into a complete bulb (including drivers, circuits, and other components), the overall lifespan is reduced due to the weakest link in the system (e.g., driver failure or heat damage).
Practical Lifespan:
Under normal use (e.g., 8–12 hours per day), LED Night Light bulbs generally last 3–10 years.
High-quality LED bulbs with advanced heat dissipation and stable drivers can reach 50,000 hours or more, equivalent to 13–17 years of daily use.
Lower-quality or poorly designed bulbs may last only 20,000–30,000 hours (around 5–8 years).
Key Factors Affecting Lifespan:
Heat Dissipation: Poor heat management accelerates LED degradation. Bulbs with aluminum heat sinks or ceramic bases last longer.
Driver Quality: Stable, low-ripple drivers reduce stress on LEDs. Cheap drivers may fail prematurely.
Usage Patterns: Frequent on/off switching or prolonged continuous use can shorten lifespan.
Environment: High humidity, dust, or extreme temperatures degrade components faster.
Comparison with Other Light Sources:
Incandescent Bulbs: ~1,000 hours (LEDs last 20–100x longer).
CFL Bulbs: ~8,000–10,000 hours (LEDs last 2–6x longer).
Tips to Extend Lifespan:
Choose bulbs from reputable brands with certifications (e.g., Energy Star, UL).
Avoid enclosed fixtures that trap heat; opt for open designs.
Use dimmers or smart plugs to reduce runtime when possible.
Clean bulbs periodically to prevent dust buildup, which can trap heat.
