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: Heavy Copper PCB Built on
Aluminum Base with 10 Oz Copper Weight
(PCB's are custom-made products, the picture and parameters shown are just for reference)


General description
this is a type of heavy copper PCB built on aluminum substrate with breakdown voltage
4000 VDC for the application of Large-current application. It's 1.2 mm thick without
Silkscreen and solder mask and a coating of OSP on pads. the base material is from
Totking supplying single up PCB. They're fabricated per IPC 6012 Class 2 using supplied
Gerber data. Each 25 panels are packed for shipment. 

Features and benefits
Optimization combination of power circuit and control circuit
Better heat dissipation of high heat generated by large current
PCB manufacturing is on required specifications. 
8000 types of PCB per month
Quick Lead time: 3-5 days
Free-of-charge PCB panelization


Application
Uninterrupted Power Supply, Desktop Power Supply, Computer Power Supplies, Battery
Power Supply, Inverter Power,Power Supply Components, DVE Power Supply,Electric
Vehicle charging (commercial and industrial), AC AC Converter, 2000W Inverter


Parameter and data sheet

PCB SIZE	75 x 64mm=1PCS
BOARD TYPE	Aluminum PCB, IMS PCB
Number of Layers	Single sided PCB
Surface Mount Components	YES
through Hole Components	NO
LAYER STACKUP	Copper ------- 350 um(10 oz)
	1W/MK dielectric material
	Aluminum 5052 0.8mm
TECHNOLOGY
Minimum Trace and Space:	70 mil / 70 mil
Minimum / Maximum Holes:	N/A
Number of Different Holes:	N/A
Number of Drill Holes:	N/A
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:	10 OZ
Final foil internal:	0 oz
Final height of PCB:	1.2mm 0.12
PLATING and COATING
Surface Finish	OSP
Solder Mask Apply to:	N/A
Solder Mask Color:	N/A
Solder Mask Type:	N/A
CONTOUR/CUTTING	Routing
MARKING
Side of Component Legend	N/A
Colour of Component Legend	N/A
Manufacturer Name or Logo:	N/A
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

PCB board washing