COB Mirror Aluminum PCB | Metal Core Circuit Board 
(PCB's are custom-made products, the picture and parameters shown are just for reference)

Mirror Aluminum PCB
the mirror aluminum PCB is a substrate which is pressed together with BT material circuit
Layer and aluminum substrate with silver particles. It is the most suitable raw material for
COB packaging.

Advantages
Good heat dissipation: the mirror silver aluminum substrate adopts thermoelectric separation
Technology, and the thermal conductivity of ordinary aluminum PCB with insulating layer is
1W/MK to 3W/MK. the thermal conductivity of mirror aluminum PCB reaches higher 137W/MK,
Which greatly improves the heat dissipation of the chip.

High light efficiency: the reflectivity of the ordinary gold aluminum PCB is 80%, the reflectivity
of the cup hole aluminum PCB is 85%, the reflectivity of the silver plated aluminum PCB is 95%,
and the reflectivity of the mirror silver aluminum PCB is 98%. the mirror silver aluminum PCB
Can make the light of the chip better excited.

PCB Services
1) Prototype, small runs and mass production supply
2) V-Groove, Punch, CNC mill
3) ENIG, HASL, OSP and Immersion tin
4) No MOQ
5) Door to door shipping service




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)

MCPCB

MCPCB

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