Structure of MCPCB
the most common MCPCB construction consists of the following layers:
1) A metal substrate, typically aluminum. In some applications, a copper substrate is more
Appropriate due to its high thermal conductivity than aluminum (401W/MK versus 237 W/MK)
but more expensive.

2) Epoxy dielectric layer. this is the most important layer in the MCPCB construction as it
Affects the thermal performance, electrical breakdown strength, and, in some cases, the
Solder joint performance of the MCPCB system. the typical thermal conductivity of the
Dielectric layer on a MCPCB is 1W/MK. A higher value is better for good thermal performance.
A thinner dielectric layer is better for thermal performance as well but can negatively impact
the ability of the MCPCB to withstand a high potential test to meet minimum electrical safety
Standards as required in certain lighting markets. the typical dielectric thickness layer is 100m.

3) Top copper layer. A thicker copper layer improves heat spreading into the PCB but may
Pose challenges for PCB manufacturers when fabricating narrow traces or spaces. A copper
Thickness of 1oz (35m) or 2oz (70m) is common.




Aluminum PCB Case: Aluminum PCB Circuit Board Built
on 8oz Heavy Copper
(PCB's are custom-made products, the picture and parameters shown are just for reference)


General description
this is a type of heavy copper single sided aluminum PCB board at 1.2mm thick for the
Application of high current and high temperature dissipation. the base laminate is from
ITEQ 9oz Copper. It's fabricated per IPC 6012 Class 2 using supplied Gerber data. Each
20 panel boards are packed separately.  

Features and benefits
Optimization combination of power circuit and control circuit,
Replace the fragile ceramic substrate and obtain a better mechanical durability,
Effective heat diffusion in the design of the circuit,
Reduce the operating temperature of the equipment, 
Improve the power density and reliability of the device, 
Prolong the service life of the product,
Whole fabrication processes are totally controlled. 
100% tests inclusive of electrical test and AOI inspection, thermal stress test,
Reliability test, insulation resistance test and ionic contamination test
RoHS materials
Focus on low to medium volume production
Small quantity order is accepted


Application
Downlight, Automatic safety control system, DC/AC converter, power amplifier,


Parameter and data sheet