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: 2.0mm Aluminum PCB Board Built
on 1 W/K Thermal Conductivity with HASL Lead Free
(PCB's are custom-made products, the picture and parameters shown are just for reference)


General description
this is a type of metal core PCB built on aluminum substrate with Tg 130C for the application
of power LED lighting. It's 2.0 mm thick with black silkscreen on white solder mask and HASL
Are on pads. the base material is used from totking, entire board supplying 3 PCBs per panel
with 3 designs. They're fabricated per IPC 6012 Class 2 using supplied Gerber data. Each 20
Panels are packed for shipment. 

Features and benefits
Good for SMT process;
Power density and reliability are improved up 10%;
Effective heat diffusion in the design of the circuit;
Replace the fragile ceramic substrate and obtain a better mechanical durability;
Meeting your PCB needs from prototype to mass production;
8000 types of PCB per month;
Quick CADCAM checking and free PCB quotation;
Prototype PCB capability;

Application
Aluminum PCB for Audio equipment, Motor driver, Constant voltage control, Street lamp

Parameter and data sheet

PCB SIZE	239 x 137mm=3 types = 3 PCS
BOARD TYPE	Aluminum PCB, IMS PCB
Number of Layers	Single sided PCB
Surface Mount Components	YES
through Hole Components	NO
LAYER STACKUP	Copper ------- 35um(1oz)
	1W/MK dielectric material
	Aluminum 5052
TECHNOLOGY
Minimum Trace and Space:	62.4 mil /- mil
Minimum / Maximum Holes:	4.2 / 4.2 mm
Number of Different Holes:	1
Number of Drill Holes:	21
Thermal resistance(C/W)	0.45
Breakdown Voltage(VDC)	4000
Impedance Control	no
BOARD MATERIAL
Thermal conductivity	1W/MK dielectric material, MCPCB
Final foil external:	1oz
Final foil internal:	0oz
Final height of PCB:	1.8mm 0.18
PLATING and COATING
Surface Finish	Hot Air Soldering
Solder Mask Apply to:	Top.  12m Minimum.
Solder Mask Color:	White
Solder Mask Type:	LPSM
CONTOUR/CUTTING	Routing, V-cut
MARKING
Side of Component Legend	TOP
Colour of Component Legend	Black
Manufacturer Name or Logo:	Marked on the board in a conductor and leged FREE AREA
VIA	No via
FLAMIBILITY RATING	UL 94-V0 Approval MIN.
DIMENSION TOLERANCE
Outline dimension:	0.0059" (0.15mm)
Board plating:	0.0030" (0.076mm)
Drill tolerance:	0.002" (0.05mm)
TEST	100% Electrical Test prior shipment
TYPE of ARTWORK to BE SUPPLIED	Gerber RS-274-X, PCBDOC etc
SERVICE AREA	Worldwide, Globally.

Variety of PCBs

Pattern developing