A flexible circuit is a combination of a thin flexible substrate, conductive traces, surface mount devices (SMD), and some type of termination or connector. In many instances, flexible circuits offer advantages over traditional rigid circuit boards including: a thin flexible & stretchable form factor, lower cost, additive process, reduced lead-time, and several material options. Butler Technologies, Inc. offers flexible circuits in both Polymer Thick Film (PTF) and Etched Copper on polyimide or polyester options. Flexible circuits are found in various industries including Automotive, Apparel, Industrial, Healthcare and Medical Devices. Visit the Flexible Hybrid Electronics (FHE) and the e-Textiles and Wearables pages on this website for additional information on Flexible Circuits.
Polymer Thick Film Circuits
- Single or Double Sided (Thru-Hole)
- Multi-layer (Blind Vias)
- High density circuits with traces and spaces down to 50 microns with the correct substrate and ink combinations.
- Heat Stabilized Polyester (PET), Paper, Synthetic Paper, Polyimide (PI), Thermoplastic Polyurethanes (TPU), and more.
- Printed conductive inks (silver, carbon, copper, PEDOT , etc.) and dielectric/insulative inks
- Embedded SMD (LEDs, IC Chips, Resistors, Capacitors, etc.) attached via conductive epoxy, underfill adhesive, and clear encapsulant
- Printed Resistors and capacitive touch sensing pads (solid and clear conductors)
- Carbon Overprint for durability and the prevention of silver migration.
Copper Flex Circuits
- Single and Double Sided with multiple layers
- Polyimide or Polyester
- Tin, Nickel, ENIG (gold) Plating or Carbon Overprint
- Embedded SMD (LEDs, IC Chips, Resistors, Capacitors, etc.) attached via conductive epoxy or solder
Each circuit type offers its own unique advantages. BTI’s Engineering Team will help you decide what is best for your application.