+86-769-39023131

Where To Buy       sales@mingfatech.com

Home  > INFO-CENTER  > News  >  Ultra-Compact Lightweight 100-Watt Pin-Fin Heatsink, Large Mounting Area For COB/SMD arrays

Ultra-Compact Lightweight 100-Watt Pin-Fin Heatsink, Large Mounting Area For COB/SMD arrays

2019-04-02


Mingfa Tech-Led Heat Sink-ultra-compact Lightweight 100-watt Pin-fin HeatsinK                                                                                                                                    MicroCooler

    

                                                                                                                                                                                                                                                                                                                                                                                                        Revolutionary ...

                                    


 

Ultra-Compact Lightweight 100-Watt Pin-Fin Heatsink

         Large Mounting Area For COB/SMD arrays


Mingfa Tech today introduced a new model of the ActiLED-G5850 with a long life of 7,000 to 100,000 hours. It is not only suitable for SMD light source, but also suitable for COB LES 30mm or more.


Mingfa Tech-Led Heat Sink-ultra-compact Lightweight 100-watt Pin-fin HeatsinK-1

https://www.mingfatech.com/actiled-g5850-active-heat-sink


Model                            ActiLED-G5850

Max Recommended Wattage                         100 WATT     (Note 1)

LED Compatibility                                          SMD Arrays, COBS, AC-COBS and “Driverless” LED Arrays

Thermal Resistance (sink to ambient)          0.45 Degrees C /Watt

Type of Fan                                                      Computer-Grade, Dual-Ball-Bearing

Fan Speed                                                        4000 RPM

Air flow                                                             3 CFM

Fan Operating Voltage                                    8-14 VDC

Fan Operating current                                    .02 Amp DC

Noise Level                                                      19 db Max (Measured One Meter Away)

Fan Life Expectancy                                       75,000 Operating Hours @25C Ambient

Heat Sink Material                                           High-Thermal-Conductivity 1070 Aluminum. Black Anodized

Overall Dimensions (including Fan)             58 mm Diameter, 50 mm Height

Weight                                                              6 ounces

Mounting Base Thickness                             5 mm

Mounting the unit                                           The two screws holes on top of fan can be used to hang unit(such as in a growlight application or to mount to rigid luminaire housing, by slightly loosening screw and placing wires or mounting brackets under head of screw.)


Mingfa Tech-Led Heat Sink-ultra-compact Lightweight 100-watt Pin-fin HeatsinK-2



Note 1:  Max recommended wattage to ensure LED case temperature stays below 80 C



TYPICAL  APPLICATIONS 

Mingfa Tech-Led Heat Sink-ultra-compact Lightweight 100-watt Pin-fin HeatsinK-3

 Meanwell  100-watt  LED Driver                                             12V, 2-Watt, Fan-Power Module, Meanwell IRM-02-12

These two suggested standard, low-cost, UL-recognized modules are available from virtually any authorized Meanwell distributor. However, any modules with specifications can also be used.

Thermal considerations-- COBs can be mounted with thermal interface compound or a thermal-interface pad. It is very important to make making sure COB is attached, without any air gaps, as closely as possible to surface of heatsink  to ensure proper heat transfer.

Mingfa Tech-Led Heat Sink-ultra-compact Lightweight 100-watt Pin-fin HeatsinK-4

Figure 1     100-watt 38mm US/European MCB-style COB, shown here mounted with solder-less BJB 47-319 COB connector/holder. Holder can be purchased separately from many online sellers  or any BJB distributor such as Mouser Electronics, Mouser part number 339-47319416050     .


Mingfa Tech-Led Heat Sink-ultra-compact Lightweight 100-watt Pin-fin HeatsinK-5Figure 2      100 watt “China-style” COB with integral lead-frame-- facilitating easy solderable wire connections (separate COB holder not needed).


Mingfa Tech-Led Heat Sink-ultra-compact Lightweight 100-watt Pin-fin HeatsinK-6Figure 3  Typical US/European style COB, simply with soldered wire connections, no holder used.

Figure 4  shows typical connections for  100-watt, light fixture for horticultural us.

Figure 5 shows how to operate the fan directly from the existing LED driver DC voltage instead of a separate power supply.  All that is needed is a simple resistor, R-1.

fig 4 edited 2-13-19.JPGCONNECTION DIAGRAM EDITED 1-24-19.JPG

 Mingfa Tech-Led Heat Sink-ultra-compact Lightweight 100-watt Pin-fin HeatsinK-9


The value of R1 is as follows. R1= V(L) – V(F)  divided by I(F) where V(L) is the approximate maximum voltage of the LED driver, V(F) is the fan voltage and I(F) is the approximate fan current .

Example—Assume an LED driver with a 32-36 V output at full power. Also assume we have a low speed (4000 RPM or less) 12V fan operating at no more than 30mA.  Doing the math will give a “dropping” resistor value of 1,000 ohms, to drop the 36V down to the desired 12V for the fan.   The resistor will dissipate about 0.6W, so a simple 1K resistor, costing less than 10 cents, would be suggested, with a 2 watt rating, so the resistor does not get too hot. The tiny amount of power diverted from the LED driver would have no perceived effect on LED brightness.        

 

                                                           

 


Contact