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Rigid Flex PCB Manufacturer

Rigid Flex PCB Manufacturing and Assembly in the USA

Blind Buried Circuits offers high-quality rigid-flex printed circuit board manufacturing and assembly for all your product development needs. As a leading manufacturer and assembler of rigid-flex PCBs in the USA, we take pride in providing our customers with high-quality printed circuit boards that meet their custom PCB requirements.

hdi rigid flex PCB

What are Rigid-Flex PCBs?

The Rigid-Flex PCBs combine rigid and flex materials, which helps customized products fit specific needs. It can be laminated in different thicknesses and accommodate many layers. The designers ensure that the traces are designed in a way that helps multiple bends and folds fit into the tight spaces. Rigid-Flex PCBs are mainly used in medical devices, aerospace systems, and military applications. They are mainly used in products with limited space and require high reliability and performance.

6 layer rigid flex PCB

Blind Buried Circuits Manufacturing and Assembly Capabilities

We stock rigid and flex materials like polyimide materials in stock to keep the lead time as quick as possible. Our state-of-the-art manufacturing and assembly equipment maximize the designs’ efficiency. With skilled technicians, we deliver the highest quality standards to our customers. With the highest quality standards, our competitors unmatch our capabilities, and we thrive on serving our customers with the best customer support to optimize manufacturing lead times.

8 layers loose leaf rigid flex PCB

Rigid Flex PCB Design Guidelines

The below chart shows our various materials and manufacturing capabilities. Please feel feel to contact our engineering team at [email protected].

PANEL AND LAYER ATTRIBUTES
Attributes Flex Printed Circuit Board Rigid-Flex Printed Circuit Board
Layer Count 10 A maximum of 4
Thickness of Copper Hoz and higher. ¼ to Hoz.
Line Spacing and Width 0.003” 0.003”
Panel Size Standard 9.84” x 15.75” 3.94” x 3.94”
VIA & DRILL ATTRIBUTES
Attributes Flex Printed Circuit Board Rigid-Flex Printed Circuit Board
Minimum Micro Via (Laser) Size 3 mil 1 mil
Minimum Via (Laser) Size 1 mil 1 mil
Minimum Drill (Mechanical) Hole Diameter 0.008” 0.006”
Zif Tolerance 2 mil 1 mil
Tooling Tolerance 2 mil 1 mil
SHIELDING AND STIFFENER MATERIALS
Attributes Flex Printed Circuit Board Rigid-Flex Printed Circuit Board
Shielding Material Copper/Silver Ink/Tatsuta/Carbon Copper/Silver Ink/Tatsuta/Carbon
Stiffener Material Polyimide/FR4/Metal Polyimide/FR4/Metal
PI Stiffener Registration 10 mil 10 mil
PI Stiffener Thickness Tolerance 10% 10%
FR4 Stiffener Registration 10 mil 10 mil
FR4 Stiffener Thickness Tolerance 10% 10%
SOLDER MASK AND COVERLAY ATTRIBUTES
Attributes Flex Printed Circuit Board Rigid-Flex Printed Circuit Board
Registration (Solder Mask) 5 mil 4 mil
Registration Tolerance (Solder Mask) 5 mil 5 mil
Bridging between Dam (Solder Mask) 4 mil 3 mil
Registration (Coverlay) 7 mil 5 mil
PIC Registration (Coverlay) 7 mil 4 mil
LEGENT / SILK SCREEN ATTRIBUTES
Attributes Flex Printed Circuit Board Rigid-Flex Printed Circuit Board
Registration +/- 5 mil +/- 5 mil
Minimum Space 8 mil 6 mil
Minimum Width 8 mil 6 mil
Minimum Height 35 mil 25 mil

Rigid Flex PCB Design Guidelines

Before manufacturing any printed circuit board, it is recommended to check manufacturer design guidelines for efficient design and effective production yields. By keeping all the aspects of the design process, our engineering team can suggest stack-ups, insulation, and thickness to ensure that the final product meets your requirements. Please call or email our engineering team at [email protected] for further assistance.

Frequently asked questions

The most preferred type of prepreg use in rigidflex lamination should be No flow prepreg.
The core benefit of Eccobond is that it support as “Strain relief”. Minimum 0.010” is preferred sufficient space to apply the strain relief.
Yes we do have capability to manufacture controlled tolerance Airgap between loose leaf rigid flex manufacturing.
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