nfhiggs
Well-Known Member
The $26 Samsung strips (all of them) are 144 diode strips rated for ~8800 lumens. The Bridgelux strips are 112 diode strips rated for ~4700 lumens. That works out to per lumen cost of .301 cents per lumen for Samsung vs .308 cents per lumen for Bridgelux - close enough to be a wash, but favoring Samsung slightly. Also consider the currents at which they are rated. Bridgelux rated test current is 50% of their given max current. Samsung's rated test current (125 mA per diode) is 62.5% of the LM561C's published max current of 200 mA. Running them at 25% lower current will equal or exceed the Bridgelux lm/W rating.The Bridgelux Gen 2 seem to edge out the F-Series in lm/W and beat them hands down in cost.
Samsung SI-B8UZ91B20WW typical lumens per watt = 171 lm/W $26.51 (single row)
BXEB-L1120Z-35E4000-C-B3 typical lumens per watt = 175 lm/W $14.06
When you dig a little deeper than the cost per strip and the published lm/W ratings, it becomes obvious that neither one is heads above the other in either initial cost or running cost. Both are excellent products of literally equal value and cost to run.