The closest isolated MCPCB performance to copper Direct Thermal Path MCPCB. The dielectric thermal conductivity used may seem low in performance at only 7,5 W/MK. But it's ultra thin 10µm (0,01mm) thickness makes the thermal resistance superior to the brittle and expensive Aluminun Nitride which needs much more thickness to be reliable. The dielectric layer also will not delaminate even when the solder mask already damaged unlike most other non DTP boards.


Designed from scratch for Nichia 144Ax, 233x, 119x, and any two pads LED. With some creativity it will fit 5 x E17A, 4 x E21A in parallel configuration.Test results proved that two pads LED can outperform LEDs with dedicated thermal pad due to larger surface area. Paired with good cooling, a single Nichia 144AM peaked at ~ 45 watt. My previous CDTP (Cathode Direct Thermal Path) board peaked 0,7 A lower using the same Nichia 144AM. And that was a thick 2mm 30mm x 30mm non isolated copper board.



MCPCB's general specifications:

  • MCPCB thickness: 1,65mm ±0,1mm
  • Dielectric thickness: 20µm ±3µm
  • Dielectric thermal conductivity: 7,5W/MK
  • Copper trace: 70µm
  • Solder mask thickness: 15µm ±5µm
  • Anode – cathode gap: adjustable from 0,5mm down to 0,2mm by scraping off the masking
  • Bright reflective white solder mask
  • Very thin solder mask thickness for minimum solder bond line
  • Copper pads plating: OSP to get every last bit of thermal performance
  • Routed outline, not punched to get the flattest possible bottom.



  • The ultra thin solder mask/solder resist is somewhat fragile, especially in hot temperature during reflow process. Avoid any hard and sharp objects on it.
  • Solder mask is rated to survive multiple reflows up to 300°C only for a brief moment (< 30 seconds). Prolonged high temperature exposure above 240°C will make it less white/reflective while still functional
  • Soldering LED wire can be difficult because the board is very thermally conductive.

Fixes: Use more powerful solder iron with as big as possible tip, pre-heat the base (or the case/host), use intermediate wire (solder a short slave wire to the pad first).


  • For additional cost, we can solder any suitable LED(s) on the MCPCB. Please buy the LED(s) first and then buy the soldering service. We'll reflow the MCPCB using LED in your cart.

    Use the product picture and leave the instruction in the "special instruction" field (optional). Check here

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