fbpx


SALE NOW ON to Celebrate the release of the New HLG R-Spec!!! Enjoy Massive Savings £££ of up to 20% 35% OFF our Latest Range Click here to SAVE NOW!

QB Guide

High-efficiency boards designed for Horticulture Lighting projects. No Thermal Interface Material is required between the QB board and flat metal heatsink.

SPECIFICATIONS

  • 288pcs Samsung 301B top bin Diodes for V2
  • 288pcs Samsung 561C top bin Diodes for V1
  • Connectors rated 300V 9A
  • Estimated LER 321.60 lm/W
  • Estimated QER 4.86 µmol/J
  • Dimensions 6.833″ x 11.25
  • Max current per board 3000mA

 

Flux Characteristics with QB 288 V2 3000K, S6 Bin at 55C

 VDC Current (mA) Watts at Board  Lm/W at Board (55C) μmoles/joule at Board (55C)
45.72 500 22.86 206 3.00
46.98 1050 49.33 196.10 2.85
47.70 1400 66.78 190.50 2.77
48.96 2100 102.82 180.77 2.63
49.50 2400 118.80 177.50 2.58
49.86 2800 139.60 173.80 2.53
  • Allow a tolerance of an additional 1V while matching drivers.
  • Please use this as a reference only.

 

Flux Characteristics QB 288 V1 Board with 3000K, S6 Bin at 55C

 VDC Current (mA) Watts at Board  Lm/W at Board (55C) μmoles/joule at Board (55C)
47.23 500 23.67 195.5 2.90
48.96 1050 51.40 183.6 2.73
49.68 1400 69.52 177.6 2.64
51.12 2100 107.35 167.3 2.48
51.66 2400 123.98 163.6 2.43
52.20 2800 146.16 158.8 2.36
  • Allow a tolerance of an additional 1V while matching drivers.
  • Please use this as a reference only.

 

May require an Aluminum plate or heatsink if running 50+ watts. Heatsink requirements depend on application and power.

The notes below are provided as designs ideas and are not instructions to assemble a lamp. Do not touch live boards as they run on high voltage and may have exposed solder contacts that can cause serious shock. This is not a safety guide.

 

While using multiple boards, series wiring is preferable to avoid thermal runaway if a board gets disconnected

 

PARALLEL WIRING

Multiple Boards can be wired in parallel. Different batches of boards may have slightly different voltages. Use only boards from the same batch for parallel connection. Do not use different spectrum boards in parallel as they may have slightly different voltages

Tip: Avoid daisy chaining multiple boards as shown in the 2nd image below. This causes the first board to handle a large current and can reduce the life of the board’s electrical trace. Wiring as shown in the 1st image is preferable.

SERIES WIRING

Maximum 5 Boards can be wired in series. More than 5 boards in series will exceed the recommended maximum voltage of the board connectors and are not recommended.

NOTE: Boards purchased in multiple orders may be from different batches may have different voltages and may not work share equal current if connected in parallel. Use them in series to avoid some boards pulling more current than others.

PARALLEL-SERIES WIRING (ADVANCED)

It is possible to have partial benefits of parallel and series together using some driver configurations. For example  HLG-320H-C2800 with 2 parallel string of 2 boards in series.