yujileds AP

[rounin]

Anyone use the yujiled AP series? https://store.yujiintl.com/collections/full-spectrum-ap-series-cri-98.

Making some task&photo lighting using yujiled VTC flex pcbs but the AP series seem quite nice. I might get a few once the 5600k are back in stock.

AP is bare LED only though, anyone know a place to get unpopulated flex PCB with lands for 3030 leds? Some quick searches don't really show what I want, mostly single 3030s or ribbons for 2835s.

These guys have an al core board, but a 10mm flex would be better: https://www.cutter.com.au/product/mcpcb-3030560-lin/

[rounin]

Got a few AP 5000k samples coming. Any major difference between the MEANWELL PWM-40-12 and NPF-40D-12? Is one PWM type dimming and the other current reduction dimming?

https://yujileds.com/wp-content/uploads/2021/01/P3200007.00-2.0-YJ-AP-3030-G02.pdf has a current vs chromaticity shift graph

I can't really tell how big a deal it is, it shows like a +/-0.001  CIE1931 shift with current and like a 0.005 CIE 1931 shift with temperature. Think non-pwm current dimming is fine then wrt color shift?

[knotlogic]

That's interesting, haven't seen those before.

How do they compare to the their VTC series?  Flipping between the product pages it looks like the AP is a bit higher in the orange and red regions and they filled in the drop between 400 nm and blue?

[rounin]

I'll test them head-to-head when they get here. Yeah I think the main difference is in the both blue and red falling off more gradually and less blue spike / peak.

[Zero999]

I wonder how they work?

The peak in the 420nm, implies they use violet, rather than the usual blue LED to excite the phosphors. There are other peaks in the blue, green and red regions, which is indicative of a triphosphor mix.