Are you guys interested in Citizen Cobs???

CobKits

Well-Known Member
i have decent stock of some colors but it seems like they had a run on them, all my remaining shipments got pushed from 2/1 to 3/9

im waiting on a new power supply and will do some more comprehensive tests next week.
 

frica

Well-Known Member
although data sheets only say 2-3% more lumens my first gen5 vs gen6 test on a 1212 suggested more, like a 5% bump.

1212 gen 6 might be in cxb3590 territory
Maybe because for the datasheet they test the chips at 25 degrees.
Singling out 1 factor.

While in your case you probably used the same heatsink for both V5 and V6.
The V6's better thermal resistance and efficiency is reducing the temperature (relative to the V5), which we know increases efficiency. And the V6 also takes a temperature above binning conditions better than the V5 which also adds a little to the efficiency. (less temp droop)
 

DarthPlagueis

Well-Known Member
i have decent stock of some colors but it seems like they had a run on them, all my remaining shipments got pushed from 2/1 to 3/9

im waiting on a new power supply and will do some more comprehensive tests next week.
PM me if you like. I can get you some contacts for ideal.
 

CobKits

Well-Known Member
that would be good. ive sent several emails asking them to develop a holder for the 38mm cobs (clu 058, cxm32, etc), but they always fall on deaf ears
Maybe because for the datasheet they test the chips at 25 degrees.
Singling out 1 factor.
datasheets are actually 85C hot binning in citis case

im my tests it was all pretty isothermal, "pulse-y" tests if you will. but yes it seems the thermal management is the most significant upgrade (and they already had superior thermal management imo, better than cree's alumina ceramic substrates
 

DarthPlagueis

Well-Known Member
that would be good. ive sent several emails asking them to develop a holder for the 38mm cobs (clu 058, cxm32, etc), but they always fall on deaf ears

datasheets are actually 85C hot binning in citis case

im my tests it was all pretty isothermal, "pulse-y" tests if you will. but yes it seems the thermal management is the most significant upgrade (and they already had superior thermal management imo, better than cree's alumina ceramic substrates
Did they transfer you to the OEM plant in Texas? That's who you have to talk to, minimum quote is 500 pieces, but it's a hell of a deal. I sent you a PM about the BJB holders. thanks coberto.
 

CobKits

Well-Known Member
no i just emailed support and never got a response, that was the extent of my attempts (twice).

i'll look into their direct pricing, see if its better than my current supplier (whos buys 10000 at a time from them). it usually comes out in the wash and like last fall, when one is sold out, all are sold out, like they are bottlenecked in manufacturing
 

DarthPlagueis

Well-Known Member
no i just emailed support and never got a response, that was the extent of my attempts (twice).

i'll look into their direct pricing, see if its better than my current supplier (whos buys 10000 at a time from them). it usually comes out in the wash and like last fall, when one is sold out, all are sold out, like they are bottlenecked in manufacturing
From speaking to their employees, it doesn't seem to be a "hot seller", the manager had to get on the phone because 2 others had never heard of "chip-lok" products. Basically they are made to order, not heavily mass produced, which explains why some after market sellers, charge 5+ per item.

One of the reps for citi said they may just have graphtek installed on the back of every chip for next generation, since a couple other brands are now doing that.
 

CobKits

Well-Known Member
havent seen that but its interesting, im a paste guy myself.

ideal is a huge company ive been using their electrical products for decades
 

Johnnycannaseed1

Well-Known Member
that would be good. ive sent several emails asking them to develop a holder for the 38mm cobs (clu 058, cxm32, etc), but they always fall on deaf ears

datasheets are actually 85C hot binning in citis case

im my tests it was all pretty isothermal, "pulse-y" tests if you will. but yes it seems the thermal management is the most significant upgrade (and they already had superior thermal management imo, better than cree's alumina ceramic substrates

Haha I remember pointing that out a while back and Greengene & NoGod tried to pounce on me...They are clearly clueless when it comes to Citi, and the proof is in the pudding!
 

DarthPlagueis

Well-Known Member
Ok guys, so I got my quote from my suppliers, here will be the general outline for the first product I may offer

CLU048-1212 PASSIVE LIGHT ENGINE for 45$

1 Citizen, Version 6 COB, CLU048-1212 ( in either 3500 or 300k)
1 Mechatronix 9980 ultra anodized heat sink
1 BJB COB holder
1 Angelina Ideal Reflector
1 Graphtek Piece
2 18" leads of 18AWG wire

Let me know if you guys would be interested, I can have 200 on deck within a week but I need to have some support. So juice me up guys! Contacted my friend for a www, so let me hear some feedback



 

wietefras

Well-Known Member
Well I dropped the useless reflector, but all the other prices you mention do look very high yes. $1.75 for a few inches of wire? It's free at most sites where you order this stuff. So is the heat sink sticker and you can get all this together from one site. No need to browse multiple sites.

Not sure why people are cheering for someone trying to make a fast buck like this. We all know where to get this stuff and for a lot less than that. Either from other forum advertisers who actually help people around here or from where it's simply cheap.

It's not even allowed to advertise like that on this forum.
 

DarthPlagueis

Well-Known Member
Well I dropped the useless reflector, but all the other prices you mention do look very high yes. $1.75 for a few inches of wire? It's free at most sites where you order this stuff. So is the heat sink sticker and you can get all this together from one site. No need to browse multiple sites.

Not sure why people are cheering for someone trying to make a fast buck like this. We all know where to get this stuff and for a lot less than that. Either from other forum advertisers who actually help people around here or from where it's simply cheap.

It's not even allowed to advertise like that on this forum.
THEN LINK THEM FOR THE COMMUNITY, I mean you must be trolling dude
 
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