Something like SST-40 but Hi-cri and 4000K or less for SC31 Pro?

Flashlight Modding and DIY Parts
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I like my SC31 PRO a lot, but CCT is too high for my taste (5000K). I want to swap mcpcb with other led, but what are my options?
Will SST-20 work with SC31 PRO on turbo?
Thanks.

1 Thank
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Compared to the SST-40, the SST-20 will result in a slightly lower lumens output but with a slightly tighter hotspot.

On FET depending on the battery used and any resistance by-passes performed it would be pushing the upper limits of the SST-20.

I can’t say about extended runtime at full out Turbo but I’ve run short bursts of Turbo (~6.7A) and haven’t blow my SST-20 (2700K) emitter yet :wink: Heats up fast though. Remember YMMV.

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I’m using 4000K sst20. Took it for a walk the other day. Worked fine. I set my temperature threshold low so it ran fine. Ramped down when it got hot.

Note that I’m using a flood optic so can’t comment on the beam.

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Might check out the LH351D high CRI

  • Sofirn (bare) in 2700K or 4000K: link
  • Convoy in 4000K: link
  • Convoy in 3500K: link
  • Convoy in 2700K: link
  • Kaidomain in 3500K: link
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Have you tried thr ones from Sofirn? How’s the tint? Any green?

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I personally haven’t tried them, nor can I tell if there’s any green. I’m color challenged.

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It works fine with sst20 2700K from kaidomain and 15 degree frosted tir optic. Works on FET with 35E cell. Very usable beam and tint in my opinion.
I have FC11 2700K LH351D with same 15 degree optic and FC11 is a little bit floodier. I like SC31pro more because of anduril and lighted button.

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Whsre do you get the optic?

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kaidomain
This one is best in my opinion. Beam without artifacts and still enough throw.

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I really like the Luxeon V. They are available in 4K and are high output. They are not high CRI but they have a really great tint. They are tougher than the SST 40’s too. SST20 will get you more throw and be higher CRI but less output. The SST20’s are not as tough. I don’t know if it would survive in your light. I don’t know enough about the driver in that light. You would need to reflow the Luxeon though.

Boards and centering rings from Kaidomain http://kaidomain.com/search&search=4040

LEDs from digikey https://www.digikey.com/en/products/detail/lumileds/L1V1-407003V500000/7563557

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I tested one 4000K and 2700K from Sofirn here , it’s with a beaded TIR lens so with a reflector the spot duv will be a bit greener.

The 3500K from Convoy (bin U6) will probably be the nicest although I haven’t tested it.