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.



MCPCB Case: LED PCB Aluminum Base with 3W / MK
Thermal Conductivity
(PCB's are custom-made products, the picture and parameters shown are just for reference)


General description
this is a type of aluminum PCB for the application of automotive ignitor. It's a single layer
MCPCB board at 1.6 mm thick with 3 W/MK thermal conductivity. The aluminum plate is
from ITEQ, Solder mask and silkscreen from Taiyo. It's fabricated per IPC 6012 Class 2
Using supplied Gerber data. 25 panels are packed for shipment.


Features and benefits
SMT process
Effective heat dissipation reduces the operating temperature of the module and prolongs
the service life. 
Power density and reliability are improved up 10%.
Reduce the dependence of heat sinks and other hardware (including thermal interface
Materials),
Reduce the volume of the product,
Reduce the cost of hardware and assembly,
DDU Door to door shipment with competitive shipping cost,
Engineering design prevents problems from occurring in pre-production. 
Products and Manufacturing are certified by authorized organizations.
Diversified shipping method
UL recognized and RoHS Directive-compliant
RoHS materials


Application
Dining room lighting, DC/AC converter, Radiator, Automotive lighting 


Parameter and data sheet

PCB SIZE	100 x 100mm=25PCS
BOARD TYPE	IMS PCB
Number of Layers	Single sided PCB
Surface Mount Components	YES
through Hole Components	NO
LAYER STACKUP	Copper ------- 35um(1oz)
	3.0W/MK 200um dielectric material
	Aluminum base 1060
TECHNOLOGY
Minimum Trace and Space:	12mil/14mil
Minimum / Maximum Holes:	5.5mm
Number of Different Holes:	1
Number of Drill Holes:	4
Thermal resistance(C/W)	0.45
Breakdown Voltage(VDC)	4000
Impedance Control	no
BOARD MATERIAL
Thermal conductivity	3.0W/MK 200um dielectric material
Final foil external:	1oz
Final foil internal:	0oz
Final height of PCB:	1.6mm 0.16
PLATING and COATING
Surface Finish	Hot Air Soldering Leveling(HASL),lead free, Sn>=2.54m
Solder Mask Apply to:	Top.  12m Minimum.
Solder Mask Color:	White
Solder Mask Type:	LPSM
CONTOUR/CUTTING	Routing
MARKING
Side of Component Legend	TOP
Colour of Component Legend	Black
Manufacturer Name or Logo:	as per requirement
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

Developing line