28x28 PR1835 LED Chip 6000K 90CRI Lighting COBs 70W 12S12P Mirror Aluminum Base Integrated Beads 1500mA 36V for Powerful Lamp
LEDs type: COBLED chip: BRIDGELUX PR1835External Dimensions: 28x28mmLuminous surface diameter: 23mmLED chip sizes: 1835（mil）Beam angle: 120 degreeLuminous efficiency: 135lm / wattCRI: >90RaBase material: The mirror aluminumColor tolerance: ＜4（SDCN）Thermal Resistance: ＜2.5 °C / WLED junction temperature: 125° Max.LEDs arrangement: 12 in Series, 12 in ParallelLED integrated board input current : 1500mA recommend (1700-1800mA MAX.)
Forward Voltage: 34-38V
ESD: 2000VWire material: Gold wireLm-80 test: Yes
Storage:
To avoid moisture, we recommend storage conditions for the unopened LED +5 ~ +30℃
rela-tive humidity <60%. LED should be used within 168 Hrs. of opening the package. Please
make sure to dehumidify and vacuum pack the remaining/ unused LED. Dehumidifying condition:
+120℃±5℃ of 4Hrs. Effective age for the sealed led is one year.
The soldering precautions:
Soldering conditions: Reflow soldering is not recommended for this LED. If hand soldering,
set sol-dering iron temperature at 350℃ and soldering time not More than 3.5 seconds, after
the first soldering, make sure the substrate surface temperature returns to ambient temperature
before a second soldering. Please. make sure when soldering, there is no external force on the
soldering surface and silicon batardeau (such as pressure, friction or sharp metal nails, etc.),
to avoid gold wire deformation or dam-age and other abnormalities. If beyond recommended
conditions, we cannot guarantee the LED stability, please do the risk assessment first. During
assembly, please ensure that a good quality thermal paste is applied and distributed evenly over
the surface. While using thermal pad (Heat Sink), make sure LED is firmly tightened and there
is no gap between surfaces. In such heat-media products, through a pressure test of at least
500 volts.
Anti-static measures:
Please take adequate measures to prevent electrostatic generation, such as wearing
electrostatic ring or anti-static fingerstall etc; any relative products like plant
equipment, machinery, carrier and transpor-tation units shall be connected to discharging
unit/ ground. The ESD sensitivity of this product is > 1000V（HBM）, after assembly the final
lamp, please make sure to discharge Static Electricity by proper ESD equipment.
Temperature control:
Recommended temperature conditions for enhanced product life: Be sure to TS point (negative
pads) controlled below 85℃, COB recommendation colloid surface temperature control ≤150℃.
,
