I have a 365nm SST-10 waiting for a test for a few months now. First I had to update my test method, but it works now and now I have to check two already tested 365nm leds (276A and the LiteOn) to form a new reference. Then the SST10. I’m not looking forward to the work atm (sorry, led testing is always a bit boring), but it is in the planning soon.
Yeah I can understand it being boring. Working on making my own pvc “lumen tube” integrating sphere, but I want to figure out a way to automate testing before I push it into service.
Idea would be to set a few limits, and just hit a button and have it automatically ramp and hold current and take light measurements until it sees a decrease in luminance, then save all the data to an SD card to put into excel.
Yeah would be interesting how this performs
the thermal pad seems promising
just saw this one on mouser 30% cheaper
https://www.mouser.de/ProductDetail/Luminus-Devices/SST-10-UV-A130-E365-00/?qs=sGAEpiMZZMu4Prknbu83y0xUekQfhx0SNwykuKeIiMDCbrPKy%2FDTAw%3D%3D
But with more current efficient UV LEDs lately I have seen for Nichia one 233B that the forward voltage bumped by 0.5V up to 4.2V,
so you need a Buck/Boost driver
Sounds good, Jensen! I usually envy people who have automated their test equipment, HKJ seems a master in automation.
I myself mostly managed to avoid computers and automation all my life, and so all my testing is done with stand-alone equipment and pen and paper. This has the disadvantage of it being somewhat labor-intensive, every time again, on the other hand it gives very direct control over the methods, I’m continuously doing checks and almost immediately notice it if anything does not work as intended.
And in my case computers eat up lots of time, usually spent on things unrelated with what I want from them.
By the way, with led testing for BLF, there’s only so much that can be automated: I still have to do the reflows and mounting with care, make relevant pictures and think up and write a readable and informative post. All that takes way more time than the measurements, calculations and typing in the numbers and making a graph in Excel take.
(I have a ready to post led test for the red 219B that I never posted because I did not find the motivation. Btw, it performs a tiny bit under the red XP-E2)
I can confirm the SST-10 is at least as good output as the lite-on with maybe a bit less waste light. Don’t have a test to prove if it’s better or not quantitatively, but both running 1.4A (4x7135) they look very comparable, with the SST-10 maybe having a slight advantage.
And I can confirm that again with a direct test against each other. Still have to crush the numbers and make a nice post about it.