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Flexible Circuits Manufactured by Douglas...A Perfect Fit.
 With
70 years of product graphic design experience and screen print manufacturing
of membrane switches, it was a natural progression for Douglas Corporation
to enter the Flexible Circuit market. The processes are parallel to the
degree that we can apply our expertise to the production of high-tech,
precision engineered flex circuits.
Flexible circuits offer several advantages over etched copper circuits,
including but not limited to: lower costs, lower volume and weight, thickness
reduction, double access, improved reliability, easily shielded, repeatable
electrical characteristics and increased circuit flexing capabilities.
Douglas can produce a wide variety of flex configurations with typical
required applications to include: flexing of the circuit ribbon, reduction
of package weight, restricted space requirements, minimized assembly errors,
better system reliability, increased heat transfer, predictable electrical
characteristics, better conformance to enclosure and to accommodate smaller
SMD components.
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Flex Circuit Design Guidelines:
• Base Material: Typically .005 or .007 heat stabilized
polyester.
• Conductive Inks: Silver, carbon and silver-carbon blends.
• Dielectrics: Standard screen printed electronic insulating
materials.
• Circuit: Typically .010 wide (min.) lines and spaces / .002
typ. ht.
• Multi-layer Circuitry: Three layers (max.) to maintain circuit
integrity with shielding capabilities.
• Resistance: Typical circuit loop or output resistances will
be less than 100 ohms and are dependent upon specific
circuit designs.
• Attached Component Resistance: Typical conductive
adhesive resistances are 25 to 35 milliohms.
• Performance Characteristics: All ASTM standards for
membrane switches and flex circuits are met or exceeded.
• SMD Components Installation: Most SMD components are
available and are accurately and securely installed using
state-of-the-art SMD technology.
For additional mechanical, electrical and environmental capabilities,
contact your Douglas sales representative or your Douglas engineering
specialist.
Specifications:
• Operating Voltage: 0 - 30 VDC.
• Operating Current: 100 MA max.
• Operating Loop Resistance: Less than 100 OHMS typical.
• Conductors: Silver, carbon or carbon blend.
• EMI, RFI and Static Shielding: Available in most
applications.
• Storage Temperature: -40ºC (-40ºF) to +85ºC
(1581 4F).
• Storage Altitude: Sea Level to 40,000 ft.
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sales@douglascorp.com
