Multilayer Flexible Circuits
Your Flexible Circuit Designs, Our Manufacturing Expertise
Multilayer flex circuits work well in applications involving denser assemblies. Designs typically consist of 2-6 conductive layers and the appropriate number of insulating layers: one between each conductive layer and two outside layers on top and bottom. Overall thickness ranges from 9.1 (.0091”) to 23.5 (.0235”) mils in most designs.
With a more rigid construction compared to other types of flex circuits, many of our customers select multilayer circuits for their thickness characteristics. When required, these circuits can be designed with more flexibility for use in complex circuit assemblies. Controlled impedance and EMI-shielded designs are also achievable with this type of circuit.
A Design for Manufacturing Assessment is part of our circuit assembly process, and our engineers will discuss any requirements specific to your application. We have decades of experience working with medical and aerospace/defense OEMs and Tier 1 Suppliers, and we have achieved a 99% quality ratio since 2008. You can trust that your multilayer flex circuit assembly will be delivered on time and to your specifications.
Some Key Points
- Standard and robust construction well-suited for complex electronic products
- Thin, lightweight, and durable enough to outlast your product life cycle
- Wide operating temperature range from ‐55°C ‐ 150°C
- Mount all component types: surface mount (SMT), thru–hole, crimp-on pins, wire bond, BGA
- Current carrying capabilities of signal traces range from a few milliamps to several amps
- Meets IPC‐6013 Qualifications and Performance Specifications for Flexible Printed Boards
Design Capabilities
- Stackup: Standard or air gap stackup for multilayer flex circuits
- Layer Count: 2 ‐ 6 conductive layers
- Trace/Space: .004”/.004” typical, .003”/.003” non‐typical
- Current Carrying Capacity: few milliamps to several amps
- Hole Size: .006” drilled/plated and .008” drilled/not plated typical, .004” laser drilled/plated non-typical
- Copper Thickness: ¼ oz, ½ oz, 1 oz, 2 oz typical, 7.8 mil & 10 mil non‐typical
- Material thickness: 1 mil, 2 mil typical, 3 mil and 5 mil non‐typical
- FR4 Stiffener Thickness: .010” ‐ .125”
- Polyimide Stiffener thickness: .002” ‐ .010”
Request a Quote
Receive a quote for most projects within 24 hours. Engineers respond to your inquiry and are available to answer questions and discuss design specifications.
Support from Prototype to Production
Whether the product is in the prototyping, pre-production, or full production stage, our team is ready to support your project. Lean on our experience to provide consistent, reliable multilayer flex circuits and assemblies for your medical and aerospace/defense products.
99% Quality Ratio
Low return rates are a testament to our commitment to ensuring circuits and assemblies meet all IPC quality standards. Tramonto Circuits is ISO Certified and achieves a 99% quality ratio across all orders annually, from prototypes to production.
On-Time Delivery
Lead times are stated on all quotations, and our historical on-time delivery record is over 98%. Your schedule is important to us, and our goal is to ensure you don’t worry about delayed deliveries disrupting product development and manufacturing.
Full-Service Multilayer Flex Circuit Assembly Capabilities
We provide OEMs and Tier 1 Suppliers a full suite of services, from prototyping and testing to inventory stocking and procurement. Whether you need multilayer flex circuits or a complete assembly, we are equipped to meet the demands of your business.
Industries Served
Exceeding Quality and Delivery Standards Since 2008
Tramonto Circuits is an ISO 9001:2015 Certified multilayer flex circuit manufacturer committed to delivering high-quality products on time. Our processes ensure quality from design submission through production, resulting in low return rates and compliance with IPC standards.
On-Time Delivery
Quality Ratio
24-Hour Quotations
Some of Our Happy Customers
U.S.-Based Manufacturing and Communication You Can Trust
Tramonto Circuits performs all design and manufacturing in-house, utilizing the latest equipment and technologies. An engineer handles your project from the initial quote through production, providing updates along the way and giving you a direct contact to address your questions.
Order Submission and Acknowledgement
Submit your Gerber files, bill of materials, and desired quantity. We provide a response within 24 hours of receipt.
Design Review
Engineers conduct a DFM assessment of your design. If issues are identified, we contact you to discuss recommendations.
Timeline and Delivery Conformation
Receive a delivery date two days after design approval. We have a 98.15% success rate for on-time delivery.
Production and Shipping
Your circuits are fabricated, tested, and assembled in-house at our USA facility. Orders ship via UPS or FedEx.
Frequently Asked Questions
Orders of any size are welcome. If you have questions about volume discounts, please include an inquiry with your design submission.
These services are available by request and undergo the same design submission and review process as standard orders. We specialize in supporting customer prototyping and modifications through multiple phases of product testing.
Flexible circuit boards are thin, lightweight, and can conform to contours and uneven surfaces. Despite being approximately 80% thinner than traditional circuit boards, flexible circuits are highly durable and suitable for applications ranging from small wearable electronics to medical imaging equipment.
