Double Layer PCB

A double-layer PCB (printed circuit board) is a type of circuit board that has two layers of conductive material, typically copper, separated by a non-conductive material called the dielectric layer. The two layers are typically connected together via plated through-holes also known as vias, which are drilled through the dielectric layer. The top layer is typically used for routing signals, while the bottom layer is used for power and ground connections. This allows for more efficient use of space and can also provide shielding for sensitive signals.

Benefits of Double Sided PCBs

• More Flexible to Design
• Increased Circuit Compactness
• Relatively Cost-Effective
• Transitional Level of Circuit Density
• Compact Board Size (which can reduce costs)

PCB Specifications Table

SR	SPECIFICATIONS	STANDARD
1	Minimum conductor width	6 mils (0.15 mm)
2	Minimum conductor spacing / Air gap	6 mils (0.15 mm)
3	Minimum plated hole size	16 mils (0.4 mm)
4	Maximum plated hole size	240 mils (6 mm)
5	Maximum board size	300 mm x 350 mm
6	Maximum number of layers	2
7	Minimum copper thickness	1 Oz (35 microns)
8	Maximum copper thickness	3 Oz (105 microns)
9	Dedicated Electrical Testing (BBT)	Available
10	PCB Cutting options	Routing, V-groove, Punching

PCB Surface Finish and Masking Specifications

SR	SPECIFICATIONS	STANDARD
1	Single Sided	HAL, Lacquer
2	Double Sided	HAL, TIN, Electroplated Gold & Nickel
3	Solder Mask Finish	PISM, Liquid Solder Mask
4	Solder Mask Color	Green, White, Black, Blue, Red
5	Legend/Ident Color	White, Black, Yellow, Green
6	Special Requirement	Carbon Printing on Push Button, Selective Gold & Nickel plating on Connecting Tabs

PCB Metal

PCB Technical Specifications

SR	SPECIFICATIONS	STANDARD
1	Minimum conductor width	6 mils (0.15 mm)
2	Minimum conductor spacing / Air gap	6 mils (0.15 mm)
3	Minimum plated hole size	16 mils (0.4 mm)
4	Maximum plated hole size	240 mils (6 mm)
5	Maximum board size	300 mm x 350 mm
6	Maximum number of layers	2
7	Minimum copper thickness	1 Oz (35 microns)
8	Maximum copper thickness	3 Oz (105 microns)
9	Dedicated Electrical Testing (BBT)	Available
10	PCB Cutting options	Routing, V-groove, Punching