Emitter mix

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Dizzydj1
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Emitter mix

I have an old d4s that has 5,000k 219c and although I was fairly lucky in getting a good tint very little if any green I tend to like a warmer light and I have a couple 4000 k sst20s and I’m wondering if I can reflow two SST 20s with two 219 or could the different forward voltages cause a problem or are they close enough and forward voltage to not be a problem and would the CRI be affected since they’re both supposed to be high CRI? Any information would be great

dario carafa

g_damian
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I’ve never mixed led types myself, but I saw on reddit guy who had white leds mixed with red. Red leds have super low Vf comparing white leds.

Edit: just read about cri level of mixed leds: https://budgetlightforum.com/comment/1821112#comment-1821112

Lightbringer
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When parallelling different types of LEDs, be VERY careful about forward-voltage. Never mix’n‘match different types of LEDs. One will hog way more current if it has a lower VF and v/v.

Same SSTs, CW and WW, fine, as they’re fairly recent. But I’d not want to even mix, say, old 219s and new 219s as batches will be different. Ie, instead of getting a 50/50 split, you might get 70/30 or worse.

If it works out, great, but you gotta be careful.

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Firelight2
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I’ve tried SST20, XPL HI, and LH351D all on the same Noctigon. Despite the leds all being wired in parallel everything worked fine. All the leds functioned properly.

Dizzydj1
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Whoa. So you think the old 219c 5000k and newer sst20 4000k might be ok?

dario carafa