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Track Lamp Counterexample Of Test Temperature

Track Lamp Counterexample Of Test Temperature

We know, If the thermal illuminance after half an hour is 20% lower than that in the cold lamp body, the junction temperature is basically the tolerance range of the chip. It can basically judge that the heat dissipation system is unqualified. Is there a special case? Of course, take a...

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We know, If the thermal illuminance after half an hour is 20% lower than that in the cold lamp body, the junction temperature is basically the tolerance range of the chip. It can basically judge that the heat dissipation system is unqualified.

AL-TL0628(主图B2)track light

Is there a special case? Of course, take a counterexample,

osram4

OSLON Square 1-5W The chip junction temperature increases from 25℃ to 40 ℃, the flux is Nitian rising! Then it began to decline, and the luminous flux decreased by about 10% at 120℃. So, for this chip, with half hour illumination method to assess the heat dissipation, only accept the change of 5-8%!

AL-TL0628(主图A11)tracklight

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