[Reference] Nichia E17A/E21A (2000K - 6500K, R9050/R9080, color) CCT and tint shots

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SKV89
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I’m quite surprised the E17A is not that far behind the E21A in terms of efficiency. If Clemence will ever make a 13mm board, I will buy a bunch. There’s so many AA/AAA/16340 lights I can think of that can use the 4xE17A

Aprilis
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SKV89 wrote:
I’m quite surprised the E17A is not that far behind the E21A in terms of efficiency. If Clemence will ever make a 13mm board, I will buy a bunch. There’s so many AA/AAA/16340 lights I can think of that can use the 4xE17A

That depends on the current. On lower modes they are indeed very close(about 5% difference), except the fact that E17A has noticeably higher forward voltage, however on higher modes e.g ~700 lm E21A achieves 108 lm per watt while E17A only 93lm per watt and that’s already 16% which is not that small, at least for me, plus again higher forward voltage. Anyway, I’ll wait for the tests before drawing any conclusions.
clemence
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UPDATE 191107: Color E17A beamshots added to the OP

[Clemence]

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