Application example (simulated)

**Nichia NF2W757GR-V3 R70 (6V)**

Condition: 350mA, CC driver, 3S12P (18V), 85°C Tsp

Output = 1000 lm

Efficacy = 191 lm/watt

Wattage = 5,5 watt

Condition: 700mA, CC driver, 3S12P (18V), 85°C Tsp

Output = 2000 lm

Efficacy = 179 lm/watt

Wattage = 11,4 watt

Condition: 1400mA, CC driver, 3S12P (18V), 85°C Tsp

Output = 3900 lm

Efficacy = 160 lm/watt

Wattage = 24,4 watt

Condition: 2800mA, CC driver, 3S12P (18V), 85°C Tsp

Output = 7100 lm

Efficacy = 133 lm/watt

Wattage = 53,9 watt

**Nichia NF2W757GR-V3 R8000 (6V)**

Condition: 350mA, CC driver, 3S12P (18V), 85°C Tsp

Output = 940 lm

Efficacy = 172 lm/watt

Wattage = 5,5 watt

Condition: 700mA, CC driver, 3S12P (18V), 85°C Tsp

Output = 1800 lm

Efficacy = 162 lm/watt

Wattage = 11,4 watt

Condition: 1400mA, CC driver, 3S12P (18V), 85°C Tsp

Output = 3500 lm

Efficacy = 145 lm/watt

Wattage = 24,4 watt

Condition: 2800mA, CC driver, 3S12P (18V), 85°C Tsp

Output = 6570 lm

Efficacy = 122 lm/watt

Wattage = 53,9 watt

**Nichia NF2W757GR-V3 R95 (6V)**

Condition: 350mA, CC driver, 3S12P (18V), 85°C Tsp

Output = 720 lm

Efficacy = 135 lm/watt

Wattage = 5,3 watt

Condition: 700mA, CC driver, 3S12P (18V), 85°C Tsp

Output = 1400 lm

Efficacy = 125 lm/watt

Wattage = 11,2 watt

Condition: 1400mA, CC driver, 3S12P (18V), 85°C Tsp

Output = 2670 lm

Efficacy = 110 lm/watt

Wattage = 24,3 watt

Condition: 2800mA, CC driver, 3S12P (18V), 85°C Tsp

Output = 4800 lm

Efficacy = 89 lm/watt

Wattage = 54,5 watt

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**Nichia NF2W757-F1/Optisolis (3V)**

Condition: 350mA, CC driver, 3S12P (9V), 85°C Tsp

Output = 340 lm

Efficacy = 127 lm/watt

Wattage = 2,7 watt

Condition: 700mA, CC driver, 3S12P (9V), 85°C Tsp

Output = 680 lm

Efficacy = 122 lm/watt

Wattage = 5,6 watt

Condition: 1400mA, CC driver, 3S12P (9V), 85°C Tsp

Output = 1300 lm

Efficacy = 113 lm/watt

Wattage = 11,6 watt

Condition: 2400mA, CC driver, 3S12P (9V), 85°C Tsp

Output = 2100 lm

Efficacy = 103 lm/watt

Wattage = 21 watt

**UPDATE 190617:**

5700K (18x sm503 rfc00 & 18x sm653 rfa00) Optisolis module (9v configuration) prepared for testing in Finland

**UPDATE 190628: Maukka’s preliminary test result with Optisolis**

https://budgetlightforum.com/t/-/56393/31

**UPDATE 190707: Soldering Tips**

You can solder this MCPCB with almost any common solder paste, as long as it contains active flux (no expired). HASL surface finish makes solder wet readily on it. Sn63Pb37 or Sn96,5Ag3Cu0,5 works best.

The correct and easiest method to apply solder paste is to use solder paste stencil. Although you can get away with solder wires, it’s a mess to work with and dosing would not be accurate (larger pads will hold more solder). I have found the best stecil dimension for my application using laser cut 0,15mm thick polyimide sheet. You can download the DXF file **here**.

Adjust the aperture size according to your preferred stencil thickness. Thicker stencil requires smaller aperture area. Never use the “tapping” method to solder Nichia 757 on this MCPCB. It’s a bad practice and should never be used anyway. Tapping will only make the excess solder balls to short circuit neighboring LEDs. Almost all 757 Nichias have exposed contact points at their four sides, solder balls will cling to it.

UPDATE 190729: Test Result

https://budgetlightforum.com/t/-/57759

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[Clemence]