Fenix E1 tech question?

Buck91

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Does anybody know the driver specs for the old Fenix E1 (with the Nichia ?Rigel? led)? I ask because I've been EDC one with a Seoul P4, which has been great for me. I recently replaced the slightly browning P4 with a U2SVOH, and- maybe its just the tint or the pure flood- but it appears to be dimmer than my E01 :thinking:

I know the E1 was rated at 12lm for 3hrs originally, but I'm rather unfamilar with the Nichia's behavoir and driver requirements. I'm trying to figure out if I botched the emitter swap or not. It seems similar in brightness to before, although I obviously cannot compare side by side.
 

EngrPaul

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Does anybody know the driver specs for the old Fenix E1 (with the Nichia ?Rigel? led)? I ask because I've been EDC one with a Seoul P4, which has been great for me. I recently replaced the slightly browning P4 with a U2SVOH, and- maybe its just the tint or the pure flood- but it appears to be dimmer than my E01 :thinking:

I know the E1 was rated at 12lm for 3hrs originally, but I'm rather unfamilar with the Nichia's behavoir and driver requirements. I'm trying to figure out if I botched the emitter swap or not. It seems similar in brightness to before, although I obviously cannot compare side by side.

My E1 Seoul is much brighter than the E01. Try to see which is brighter in a dark room ceiling bounce.

Are you sure the original emitter (itself) was browning? The tin-plated region around the emitter typically becomes orange with age due to copper diffusion, without affecting output. That emitter was probably in perfect shape...
 

Buck91

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It was an excuse to try out the U2SVOH. Really liked the results I got from them in my Victorinox 2AA leds (and the USVOH in my MagLED) :-D

I may have poorly soldered it, gonna have to tinker with it some more as it does not seem as bright. What was your trick at getting the leads soldered up?
 

eebowler

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The beam characteristics would be the same. Did you check if there was a difference in current draw? From my experience, there is a SIGNIFICANT increase in brightness between USVOH and U2SVOH LEDs, so much so that I thought there was degradation of the older Seoul LED...
 

Buck91

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Well, I re-did the U2 installation earlier today, and with some success!! It was a real pain getting the pcb tinned, though. I think I damaged some of the led contact tracing when I removed the old one, and that was the problem (bad solder contact resulting). This is really just a hunch, though.

Seems to be much brighter now, though I still want to re-compare it to the E01.
 
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