Relong’s RC615 is a woven fiberglass reinforced, ceramic filled, PTFE-based composite material used as printed circuit board substrate.RC615 was designed to provide low dielectric loss, low insertion loss and mechanical robustness in the 6.15 dielectric constant market. dk=6.15

1. RC615
Relong’s RC615 is a woven fiberglass reinforced, ceramic
filled, PTFE-based composite material used as printed circuit
board substrate.RC615 was designed to provide low dielectric
loss, low insertion loss and mechanical robustness in the 6.15
dielectric constant market.
The RC615’s higher dielectric constant permits various
degrees of circuit miniaturization, especially for microwave
power dividers, power combiners, amplifiers, filters, couplers
and other components that use low impedance lines.The 6.15
dielectric constant provides t he miniaturization that is needed
for small footprint antennas (GPS , DAB-Satellite Radio,
Hand-held RFID Readers, etc.).
RC615 is a “soft substrate” and is relatively insensitive
caused by stress from vibration. The robust RC615
overcomes the brittleness of ceramics (such as alumina or
LTCC) through the suspension of micro-dispersed ceramics
in a relatively soft PTFE based substrate that is reinforced
with woven fiberglass. This gives RF designers the
advantages of low loss without sacrificing the mechanical
robustness required to fulfill the needs of today’s shock, drop
and impact testing requirements of today’s electronics.
RC615 is preferred by board manufactures as it can be easily
cut and routed without being overly sensitive.
Features:
•Stable & High Dielectric Constant
(DK 6.15)
•Low Dielectric loss
•Mechanical Robustness
•High Peel Strength for Narrow Lines
Benefits:
• Circuit Miniaturization
• Replace Ceramic in Some Applications
• Improved Processing and Reliability
• Large Panel Sizes for Multiple Circuit
Layout
• lower cost Processing
Typical Applications:
• Microwave Combiner and Power
Divider Boards
• Power Amplifiers, Filters and Couplers
• Smaller Footprint Antennas
• Digital Audio Broadcasting (DAB)
Antennas (Satellite Radio)
• GPS & Hand-held RFID Reader Antennas
• Antennas in Hand-held RFID Readers
PTFE/Woven Fiberglass/Ceramic Filled Laminate for Microwave Printed Circuit
Boards
Your Source International Co Limited
Website : https://ys-intl.hk/
E-mail: dale.xiao@ys-intl.hk / dale.xiao@mail.ru
Address：Hanhaida Building, No.7 Songgagn Avenue, Songgang
Subdistrict, Baoan District,SZ 518105,China

2. RC615
Results listed above are typical properties, they are not to be used as specification limits. The above information creates
no expressed or implied warranties. The properties of Relong laminates may vary depending on the design and application.
Typical Properties：
Property Units Value Test Method
1. Electrical Properties
Dielectric Constant
@ 10 GHz - 6.15 IPC TM-650 2.5.5.5
Dissipation Factor
@ 10 GHz - 0.0030 IPC TM-650 2.5.5.5
Arc Resistance sec >180 IPC TM-650 2.5.1
2. Thermal Properties
Thermal Expansion, CTE (x,y) 50-150ºC ppm/ºC 10, 9 IPC TM-650 2.4.41
Thermal Expansion, CTE (z) 50-150ºC ppm/ºC 42 IPC TM-650 2.4.24
3. Physical Properties
Water Absorption % 0.03 IPC TM-650 2.6.2.1
Density, ambient 23ºC g/cm3 2.45 ASTM D792 Method A
Thermal Conductivity W/mK 0.50 ASTM D5470
Flammability class V0 UL-94
4. Mechanical Properties
Peel Strength to Copper (1 oz/35 micron)
After Thermal Stress lb/in (N/mm) >12(2.1 ) IPC TM-650 2.4.8

3. RC615
Figure 1
Demonstrates the Stability of Dielectric
Constant across Frequency. The stability
of the Dielectric Constant of RC615 at
different frequencies simplifies design
and ensures good transition and
scalability of design.
Figure 2
Demonstrates the Stability of Dissipation
Factor across Frequency. This
characteristic proves the stability of the
material across frequency, and provides a
stable platform for high frequency
applications where signal integrity is
critical to the overall performance of the
application.
Material Availability:
RC615 laminate is supplied with 1/2, 1 or 2 ounce electrodeposited copper on both si des. Other copper weights
and rolled copper foil are available.
RC615 Standard Master Sheets are 54" x48" and 36" x48" .Common panel sizes include (not limited) :18"x 12"
and 18" x 24 ".when place order, please specify dielectric thickness, cladding type, panel size and any other
special considerations.
Dielectric Constant vs. Frequency for RC615
Dissipation Factor vs. Frequency for RC615
Your Source International Co Limited
Website : https://ys-intl.hk/
E-mail: dale.xiao@ys-intl.hk / dale.xiao@mail.ru
Address：Hanhaida Building, No.7 Songgagn Avenue, Songgang
Subdistrict, Baoan District,SZ 518105,China