Rigid Flex PCBs

Rigid Flex PCBs


Flexible printed circuit boards (PCBs) are those, which have conductor patterns printed on a flexible insulating film. The rigid PCBs are responsible to hold all the components. The flexible film connects two rigid PCBs. Thus, rigid flex PCBs are a combination of both, rigid, and flexible PCBs. This is a permanent combination, meaning these two types of PCBs are permanently connected to each other. You can get custom manufactured asymmetrical rigid flex printed circuit boards having outward flexible layers, or symmetrical rigid flex PCBs with inward flexible layers.

If you are looking for experienced manufacturer of these rigid-flex PCBs, then we have you covered. Sierra Assembly is one of the well-known manufacturer of rigid flex circuit boards and we have the capability provide your designs based on your specifications and application requirements.

Rigid Flexible Printed Circuit Boards Manufacturing Capabilities

At Sierra Assembly, we can provide you rigid flexible printed circuit boards in following capabilities:

Layer Count 2 – 10 Layers
Materials Polyimide
Copper Thickness 9 µm
12 µm
18 µm
35 µm
Min. Line / Spacing 125 µm / 125 µm
Smallest Drill 0.28 mm
Surfaces Immersion Ni/Au
Plated Ni/Au
Immersion Tin
Stiffener Material FR4
Min. Annular Ring 150 µm
Min. Soldermask Dam 100 µm
Drill to copper – Outer layers 8 mil
Drill to copper – Inner layers 10 mil
Minimum Pitch 0.5 mm
Copper Thickness 0.5 oz. - 4 oz.
Copper to Board Edge 0.007″
Minimum Hole Size 0.004″
Coverlay Opening 0.003″

Benefits of Using Rigid Flex PCBs

There are a number of benefits of using the rigid flex printed circuit boards, and this is why these boards find their use in a wide range of applications. The following are some features that prove to be beneficial:

  1. The entire process of printed circuit board assembly is simplified.
  2. Lesser number of solder joints are required in a rigid flex PCB. This increases the connection reliability.
  3. The circuit design of a rigid flex board is streamlined. This helps reduce the overall package space. The weight of the package is also reduced.
  4. The total PCB costs and expenditure is reduced considerably by using these circuit boards.

Applications of Rigid Flex PCBs

All the beneficial features explained above, make these circuit boards ideal for use in a wide range of applications. Some most common applications of these PCBs include:

  1. Digital Cameras
  2. Military Weaponry
  3. Cell Phones
  4. Aerospace Systems

Sierra Assembly is the right place for you, if you want to design quality rigid flex printed circuit boards. We have a vast experience in the field, and our team of qualified professionals possess all the required and updated knowledge about the PCB designing. This helps us manufacture circuit boards that match the exact specifications given by the clients. If you would like to know more about our capabilities, please get in touch with us today. You can also get a quote for your requirements.

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Use our onlinePCB assembly cost calculator and quote PCB assembly online as per your specifications. Save your time with our PCB Assembly instant Online Quote. 

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Download our brochure to know more about capabilities.

Custom Quotes

If you find that your project doesn’t fit within our online configurator, fill out the form with your specific needs , upload files and we will create a customized quote for you.

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