Double Sided Printed Circuit Board Prototyping FR4 2-layer Double-layer PCB for Security

Double Sided Printed Circuit Board Prototyping FR4 2-layer Double-layer PCB for Security

Double Layer, FR4, 4L/1.0mm
Immersion Gold, ENIG, 12/12mil
SPECIFICATION:

Name: Double-layer PCB
Material: FR4
Application: Security
Layers/plate thickness: 4L/1.0mm
Surface Treatment: ENIG
Line width/line spacing: 12/12mil
Minimum Hole Diameter: 0.25mm


Two-sided PCB model, the foremost normally surface treatment is HASL. At constant time, OSP, gold plating, immersion gold, immersion silver, is equally applicable.
HASL- sensible appearance, simple to weld tin on the pad, easy welding, low price.
Double sided boards are wide used and relatively easy, each manufacturer can do, that the competition is usually on the price.

ENIG- stable quality, sometimes employed in the case of boding IC. For two sided board, using through hole within the middle connects two-sided traces, and there are 2 more processes than single aspect board, that is Electroless Copper and plating.