This type of pcb can be used for both through hole and surface mount components. The complexity and density of components means much equipment has to use both sides of the Printed Circuit Board .These all the way through the board connections make double sided PTH PCB a much more physically robust item.

Double sided pcb’s consist of two copper layer on a rigid base material, the two copper layers are not connected. Better products usually supplement this with plated-through-holes where the copper connections go right through the connecting holes to the opposite side of the boardDouble sided pcb’s with plated through holes have two copper layers that can be connected by a copper plated hole, solder resist and idents can also be added..

Benefits of Double Sided PCBs

More flexibility for designers

Increased circuit density

Relatively lower costs

Intermediate level of circuit complexity

Reduced board size (which can reduce costs)

The following are applications in which Double Sided PCBs can be used:

Industrial controls

Power supplies

Converters

Control relays

Instrumentation

Regulators

UPS systems

Power conversion

HVAC

LED lighting

Hard drives

Printers

Phone systems

Power monitoring

Automotive dashboards

Line reactors

Test equipment

Amplifiers

Traffic systems

Vending machines