Access Hole
Polyimide Cover
Adhesive
Copper Pad
Polyimide Cover
Copper-Plated
Through-Hole
Polyimide
Substrate
Access Hole
Polyimide Cover
Adhesive
Polyimide Substrate
Copper Pad
Circuit types
Minco manufactures all types of circuits, from simple to complex. The basic types are:
Single-layer
·
Mil-P-50884 Type 1
·
One conductive layer, either bonded between
two insulating layers or uncovered on
one side.
·
Access holes to conductors may be on
either one or both sides. Access holes
on both sides of a single-layer are more expensive
since the substrate must be drilled or punched
separately.
·
Stiffeners, pins, connectors, components are optional.
Double-layer
·
Mil-P-50884 Type 2
·
Two conductive layers with an insulating layer
between, plus cover layers on outer layers.
·
Plated through-holes provide connection.
·
Access holes or exposed pads without
covers may be on either or both sides;
vias can also be covered on both sides.
·
Stiffeners, pins, connectors, components
are optional.
Access Hole
Polyimide Cover
Adhesive
Copper Pad
Polyimide Cover
Copper-Plated
Through-Hole
Polyimide Substrate
Polyimide Substrate
Polyimide Layer
Multilayer
·
Mil-P-50884 Type 3
·
Three or more flexible conductive layers with flexible
insulating layers between each one; outer layers may
have covers or exposed pads.
·
Plated through-holes for connection.
·
Access holes or exposed pads without
covers may be on either or both sides.
·
Blind or buried vias are possible.
·
Stiffeners, pins, connectors, components
are optional.
*Adhesiveless base material also available
4
Tel: (763) 571-3121 K Fax: (763) 571-0927 K www.minco.com
Application Aid #24