QB132 Board Guide

Designed by Horticulture Lighting Group


Amzon Prime Qb288 Link

High efficiency boards designed for Horticulture Lighting projects. QB 132 Boards can be powered upto 75 watts. QB132 are 36V and can be used with standard drivers(HLG-185H-C1400, HLG-240H-C1750) used for CXB3590. Ideal for use in grow tents or grow area with reflective walls and grow spaces with limited height. No metal heatsink or thermal paste is required .


  • 132pcs Samsung 561C top bin Diodes
  • Molex Connectors rated 300V 9A
  • Estimated LER 321.60 lm/W
  • Estimated QER 4.86 µmol/J
  • Dimensions 300mm x 225mm
  • Max current per board 2000mA

Flux Characteristics with S6 Bin

Voltage (Min Vf dc) Voltage (Max Vf dc) Current (mA) Watts at Board (Min Watts) Watts at Board (Max Watts) Max Lm/W at Board (40C) Min Lm/W at Board (40C) Min μmoles/joule at Board(40C)
33 34.2 700 22.7 23.5 195.5 188.6
33.48 34.68 1050 35 36.3 186.3 179.7
34.2 35.4 1400 47.7 49.5 178.4 172.1
34.8 36 1750 60.8 63 171.5 165.4
35.16 36.48 2000 70.4 73 167 161


* Min values calculated using AZ Voltage Bin, Max values calculated using A1 Voltage Bin

** For more details refer to Calculator here. Use values LM561C, 3000K, 80 CRI, AZ or A1 Voltage Bin, S6 Flux bin. # of LED as 132x (number of boards). Change IF_Drive mA to see lm/W and flux for different power.

Board does not require heatsink for operation. However derating power may be required is backside is blocked and unable to help board with cooling

The notes below are provided as a 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. Driver DC side may hold charge for few seconds even after disconnecting AC mains and could cause shock. This is not a safety guide.

While using multiple boards, series wiring is preferable to avoid thermal runaway if a board gets disconnected. MW HLG series CV drivers allow Voltage adjustment and can be used to limit board wattage by limiting the voltage.


QB 132 comes with single Molex connector . 300V rated Molex connector allows upto 8 Boards in series. Recommended drivers

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