This Aluminium PCB is very flexible. It is designed to take 4 leds, with 3.45 × 3.45mm base, so will suit Cree XPG, XPG2, XPL, XHP35, Nichia NVSL219 and numerous other 3535 leds with the same base dimensions. The board layout is such that the 4 leds can be driven in
- individually addressed
Series or Parallel are configured on available pads using zero Ohm resistors.
Direct Thermal Path : Dielectric under the thermal pad of LED
The MCPCB-XP24QUAD-IAD module requires careful attention to mounting and cooling to ensure that the junction temperature of the LED is kept well below the maximum rating as specified in the LED documentation published by Led Manufacturers
For optimal cooling, we recommend that the module be mounted to a suitable finned heat sink (aluminium or copper) that is exposed to open air. The module can be mounted to a heat sink in various ways
- 24mm pressure sensitive, thermally conductive tape (Recommended)
- Arctic Alumina thermally conductive adhesive
- Thermal Compound: Requires the use of mechanical fasteners
Before fastening the module to the heat sink, ensure that the two mating surfaces are perfectly flat and clean in order to maximise heat transfer to the the sink.
The bottom of the LED MCPCB is electrically neutral, so it is not necessary to electrically isolate the base from the cooling surface.
Please note the use of Thermal Adhesives makes the PCB unlikely to be removed for servicing. Please consider this if removal of the board is desired as another TIM may be a better choice.
Assembly Guide for Optics: Ledil have a good generic guide on assembly of Leds/Optics, adhesives etc. Download
Optics Support: The board is drilled to take Ledil Carclo 24mm Optics in the 106xx series and other optics with the same pin footprint
Termination: The centre of the PCB has multiple holes so wire can be threaded through the bottom and soldered to top pads, alternative for individually addressing is to solder to top pads
|PCB TYPE||24 mm Round PCB|
|PCB SIZE||24mm x 1.65mm|
|BASE METAL TYPE||Aluminium|
|DIRECT THERMAL PATH||YES|
|THERMAL CONDUCTIVITY||3 W/m.K|
|GLASS TRANSITION TEMP.||170 degree Celsius|
|COMPATIBLE LED||Cree XPG, XPG2, XPL, XHP35, Nichia NVSL219|