RT/duroid® 5870 /5880 High Frequency Laminates

RT/duroid® 5870 and 5880 glass microfi ber reinforced PTFE composites are designed for exacting stripline and mi crostrip circuit applications.

The randomly oriented microfi bers result in exceptional dielectric constant uniformity.

The dielectric constant of RT/duroid 5870 and 5880 laminates is uniform from panel to panel and is constant over a wide frequency range.
Its low dissipation factor extends the usefulness of RT/duroid 5870 and 5880 laminates to Ku-band and above.
RT/duroid 5870 and 5880 laminates are easily cut, sheared and machined to shape. They are resistant to all solvents and reagents, hot or cold, normally used in etching printed circuits or in plating edges and holes.

Normally supplied as a laminate with electrodeposited copper of ½ to 2 ounces/ ft.2 (8 to 70m) or reverse treated EDC on both sides, RT/duroid 5870 and 5880 composites can also be clad with rolled copper foil for more critical electrical applications. Cladding with aluminum, copper or brass plate may also be specifi ed.
When ordering RT/duroid 5870 and 5880 laminates, it is important to specify dielectric thickness, tolerance, rolled,electrodeposited or reverse treated copper foil, and weight of copper foil required.

RT/duroid® 5880 high frequency laminates are PTFE composites reinforced with glass microfibers.The randomly oriented microfibers result in exceptional dielectric constant uniformity.

The dielectric constant of these high frequency laminates is the lowest of all products, and low dielectric loss make them well suited for high frequency/ broad band applications where dispersion and losses need to be minimized. Because of its extremely low water absorption characteristics, RT/duroid 5880 laminates are ideal for applications in high moisture environments.

RT/duroid 5880 laminates are easily cut, sheared and machined to shape, and resistant to all solvents and reagents normally used in etching printed circuits or plating edges and holes. RT/duroid 5870 and 5880 laminates have the lowest electrical loss of any reinforced PTFE material, low moisture absorption, are isotropic, and have uniform electrical properties over frequency.

Rogers RT/duroid 5880 high frequency laminates are used in:

• commercial airline broadband antennas
• microstrip and stripline circuits
• millimeter wave applications
• military radar systems
• missile guidance systems
• point-to-point digital radio antennas