Flex Pcb - Multi-layered Flexible Circuit Board, High Precision Tolerance For Critical Dimensions, Comprehensive Hole Location Data And Bend Direction Specifications

Customer normally being requested to communicate with Flex PCB manufacturing all the needs and requirement, if the information presented is clear and easily understandable, the chance of getting the flex circuit customer want on the 1st pass is greatly enhanced. Since over 75% of documentation package we received require some sort of clarification, this will lead to countless man-hours lost pursuing very important information to meet manufacturing target.
At a bare minimum, flex circuit manufacturing need to given the following information in order to complete this manufacturing task properly:
1 Class of product
2 Material to be used for construction which includes
- Base laminated and cover-layer type
- Metal foil type and thickness
3 Holes count for each holes size called out
4 Data to define each hole locations (hard or digital drawing)
5 Conductor layer count
6 Flex Circuit artwork defining signals runs for each layer
7 Cross-sectional view of each flexible circuit construction
8 Cover-layer or cover-coat opening location
9 Flex Circuit outline with dimensions and datums
10 Marking requirement, material and location
11 Bend and flex location and direction of bend
12 Stiffener location and bonding requirement
13 Special process and/or surface finish requirement
14 Tolerance for manufacturing include:
- Holes tolerance
- Physical dimension tolerance
- Critical dimension (if any)
15 Test point location
16 Special electrical testing requirement.