Spider farmer sf 7000

SBBCal

SBBCal

Well-Known Member
PJ Diaz said:
Viparspectra still uses Samsung Diodes (LM281B+) in their lower level fixtures.

In terms of "shortage", that doesn't necessarily mean that they're unavailable, it could just mean that because there are less available they are more expensive.
Click to expand...
I just looked them up.your right. I could of swore the v series (the one that looks like sf) used different diodes than samsung. I remember being like “WTF why?” Bc they had just come out with the XS series. Strange on the availability bc during that time both arrow and digikey didn’t spike their prices on Samsung . :joint:
 
Spiderfarmerled

Spiderfarmerled

Well-Known Member
Rollitup Advertiser
Hi dear all.
About the diodes, because the shortage of Samsung LM301B, so we change to Seoul 3030C for this new product. As our colleague said, it doesn't affect it's effcacy.
The following is data for Seoul 3030C
1614131929854.png1614131969639.png

This is for Samsung LM281B+
1614132035545.png

Then you can see that Seoul 3030C is higher efficient and energy saving.
Meanwhile, we wil feedback all your suggestion to our company.
Thanks all
 
PJ Diaz

PJ Diaz

Well-Known Member
Spiderfarmerled said:
Hi dear all.
About the diodes, because the shortage of Samsung LM301B, so we change to Seoul 3030C for this new product. As our colleague said, it doesn't affect it's effcacy.
The following is data for Seoul 3030C
View attachment 4835349View attachment 4835351

This is for Samsung LM281B+
View attachment 4835354

Then you can see that Seoul 3030C is higher efficient and energy saving.
Meanwhile, we wil feedback all your suggestion to our company.
Thanks all
Click to expand...
172 lumens/watt??? That's not good at all.

Screenshot (71).png
 
M

mannitu77

Active Member
"this is for the LM281B+",

the "data", dont even wanna call it like that, it shows 165 lumen/watt at 150ma. Thats almost 0.5w, maximum power. The diode can reach 200 lumen/watt at more reasonable current. Dont know why in the world people dont get this straight and always ignore the current. Chinese marketing in general seems to calculate with an IQ of 50 for the western people.
 
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