I have found some supplier in Alibaba who can make 95 CRI COB for cheap and I would like to use this as my first-time selling experience. The appearance of the COB are shown below.
The brief specs are the following:
Voltage: 30-33V (starts to light at 24.5V)
Wattage: 100w (can survive up to 120w of continuous power)
CCT: 5700k <5-step MacAdam (3500k is available if there are enough people ordering)
CRI: “98+” (Manufacturer rated, actually ~95 as tested by Maukka) This LED appears to have best color rendering when running at maximum current, so keep that in mind if you plan to under-drive this.
Construction: Flip-chip (no bond wires), Silicone-based phosphors fill.
Efficacy (at full power): 80-90 lm/w
Dimension:* 40x46 mm (can use the same tapping holes as the generic 100w chinese LED. However, some reflectors might not fit these perfectly)
I have ordered samples and sent some to Maukka for testing. Here is the CRI result for 5700k CCT:
CRI test at 30w:
CRI test at 100w:
Here is the Spectral Power Distribution given by the Manufacturer:
I think this could be a much cheaper alternative to Yuji’s 100w 5600k COBs. I would like to ask if some of you are interested in these COBs.
I will order these if the total amount interested is 25 pcs or more. I expect to keep this open for signing up for a month or two.
Here is how I plan to sell these.
Update: prices now included fees.
Shipping and Packaging Fees
See this for the updated shipping cost.
Standard: Thailand Post Int’l Registered Air Small Packet - (1 - 4 weeks)
—To Canada: $6.3-
To other countries: $4.73 Economy: Thailand Post Int’l SAL Small Packet or Air Small Packet - (2 - 7 weeks, depending on which is cheaper) Non-ASEAN countries: ($2.36 for non-registered, untracked)
FREE Standard shipping eligible for the order of 5pcs or more.
Express Shipping: DHL iExpress - (2 - 5 days)
Shipping Fee: $25 (asian countries) to $45 (overseas)
*Shipping fees vary by destination, may be unavailable in certain countries.-
Note: I will declare the shipment the exact value as ordered. Be responsible for import taxes.
Payment via PayPal (the payment address will be sent via PM, buyers will be paying the fees). You can start paying after I made the purchase with the supplier. I will ship the item after you pay the item and shipping cost.
If you are interested and want to sign up, you can reply the amount you want below and PM me your name, shipping address, and telephone number. I can accept up to about 100 pcs of total order at this time.
Order have been placed, anyone interested can PM the shipping address now.
Amount available for sale:
5700k: 54 pcs
3500k: 14 pcs
—Update: Apr 20, 2019: Item has reached my country and I should be able to pick it up within next week.—
—Update: Apr 22, 2019: The goods is now with me, anyone interested please PM me the address.—