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2025
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Difference Between L90B10 and L70B50
Everyone in LED lighting industry know the lifetime of LED light, but do you know how to indicate the end life and related lifetime? L and B can help you to know clearly.
L defines the percentage of lumen comparing with the initial lumens.
B value means the failure data at the L data. So LB value indicate the real lifetime at a certain hours.
Like L90B10 at 50,000 hours means the LED lamp keeping 90% lumen from initial lumen and only 10% light failed to reach 90% lumen. You can get clearly L70B50 means only 50% lamp survive at 70% lumen remaining at 50,000 hours. So L70B50 light decay is faster than L90B10.
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