Metal Core PCB
Metal core PCB is thermal management circuit board used in LED lighting which needs fast
Cooling dissipation. the metal core can be aluminum (aluminum core PCB) and copper
(copper core PCB), stainless steel, even iron base. 



Metal Core PCB Case: LED PCB Board 94V0 for Spot
Light
(PCB's are custom-made products, the picture and parameters shown are just for reference)

Metal Core PCB Capability 2019

NO.	Parameter	Value
1	Type of Metal Core	Aluminum, Copper, Iron
2	Model of Metal Core	A1100, A5052, A6061, A6063, C1100
3	Surface Finish	HASL, Immersion Gold, Immersion Silver, OSP
4	Thickness of Surface plating	HASL: Sn>2.54M, ENIG: Au 0.025-0.1m, Ni 2.5-5m
5	Layer Count	1-4 Layers
6	Maximum of Board Size	23" x 46" (584mm1168mm)
7	Mininum of Board Size	0.1969" x 0.1969" (5mm5mm)
8	Board Thickness	0.0157" x 0.2362" (0.4-6.0mm)
9	Copper Thickness	0.5OZ(17.5m),1OZ(35m),2OZ(70m) 3OZ(105m),4OZ(140m) to 10oz (350m)
10	Minimum Track Width	5mil (0.127mm)
11	Minimum Space	5mil (0.127mm)
12	Minimum Hole Size	0.0197" (0.5mm)
13	Maximum Hole Size	No limit
14	Minimum Holes Punched	PCB thickness <1.0mm: 0.0394" (1.0mm)
		PCB thikness 1.2-3.0mm: 0.0591" (1.5mm)
15	PTH Wall Thickness	>20m
16	Tolerance of PTH	0.00295" (0.075mm)
17	Tolerance of NPTH	0.00197" (0.05mm)
18	Deviation of Hole Position	0.00394" (0.10mm)
19	Outline Tolerance	Routing: 0.00394" (0.1mm)
		Punching: 0.00591" (0.15mm)
20	Angle of V-cut	30, 45, 60
21	V-cut Size	0.1969" x 47.24" (5mm1200mm)
22	Thickness of V-cut Board	0.0236" x 0.1181" (0.6-3mm)
23	Tolerance of V-cut Angle	5
24	V-CUT Verticality	0.0059" (0.15mm)
25	Minimum Square Slots Punched	PCB thickness < 1.0mm: 0.0315" x 0.0315"(0.8 x 0.8mm)
		PCB thickness 1.2-3.0mm: 0.0394" x 0.0394"(1.0 x 1.0mm)
26	Minimum BGA PAD	0.01378" (0.35mm)
27	Minimum Width of Solder Mask Bridge.	8mil (0.2032mm)
28	Minimum Thickness of Solder Mask	>13M (0.013mm)
29	Insulation Resistance	1012Normal
30	Peel-off Strength	2.2N/mm
31	Solder float	260 3min
32	E-test Voltage	50-250V
33	Thermal Conductivity	0.8-8W/M.K
34	Warp or Twist	0.5%
35	Flammability	FV-0
36	Minimum Height of Component indicator	0.0059"(0.15mm)
37	Minimum Open Solder Mask on Pad	0.000394" (0.01mm)

Advantages of MCPCB
1) Effective heat dissipation reduces the operating temperature of the module and prolongs
the service life;
2) Power density and reliability are improved up 10%;
3) Reduce the dependence of heat sinks and other hardware (including thermal interface
Materials);
4) Reduce the volume of the product;
5) Reduce the cost of hardware and assembly;
6) Optimization combination of power circuit and control circuit;
7) Replace the fragile ceramic substrate and obtain a better mechanical durability;
8) Reduce the operating temperature of the equipment.

Applications
LED lighting, Switch regulator, DC/AC converter, Communication electronic equipment,
A filter electric circuit, Office automation equipment, Motor driver,  Motor controller,
Automobile etc.

Solder Mask
Depending on whether light is to be absorbed or reflected, we have green, black and white
Solder mask. White solder mask is commonly used in LED PCB application and we use super
White LED solder mask and no yellowish or brown colour occurs after the bare PCB baking
as well as reflow and wave solder PCB assembly processes.


MCPCB

MCPCB

Flying probe test