Rogers RO3003 PCB Fabrication
Ultra-low loss ceramic-filled PTFE with Dk 3.00 and Df 0.0010 at 10 GHz for mmWave and automotive radar applications
3.00
Dk @ 10 GHz
0.0010
Df @ 10 GHz
24 ppm/C
CTE Z-axis
500C
Td
What is Rogers RO3003?
Rogers RO3003 is a ceramic-filled PTFE composite laminate engineered for millimeter-wave circuit applications. Unlike glass-reinforced materials, RO3003 uses ceramic filler exclusively, eliminating the fiber weave effect that causes signal skew and impedance variations at frequencies above 30 GHz.
The absence of woven glass reinforcement gives RO3003 exceptionally uniform dielectric properties across the entire panel surface. This isotropy is critical for 77 GHz automotive radar modules where wavelengths are measured in millimeters and even minor Dk variations create beam-pointing errors.
With a decomposition temperature of 500C, RO3003 withstands multiple lead-free reflow cycles without degradation. The ceramic filler also provides a CTE of approximately 24 ppm/C in the Z-axis, significantly lower than standard PTFE laminates, improving plated through-hole reliability in multilayer constructions.
Millimeter-Wave Performance
Dk tolerance of plus/minus 0.04 ensures consistent impedance matching at 77 GHz where quarter-wavelength is under 1mm
Automotive Radar Grade
Proven in production 77 GHz ADAS radar sensors across major automotive Tier 1 suppliers worldwide
Lead-Free Compatible
Td of 500C supports multiple reflow cycles at 260C peak without delamination or property drift
Hybrid Stackup Ready
Bonds reliably with FR-4 and other laminates using standard RO4450F prepreg for cost-optimized multilayer designs
Rogers RO3003 Key Properties
Representative values from the manufacturer datasheet.
| Property | Value | Why it matters |
|---|---|---|
| Dielectric Constant (Dk) | 3.00 +/- 0.04 @ 10 GHz | Enables precise 50-ohm trace width calculations for mmWave circuits |
| Dissipation Factor (Df) | 0.0010 @ 10 GHz | Minimizes insertion loss in long feed networks and coupled-line filters |
| Thermal Conductivity | 0.50 W/m/K | Adequate heat spreading for moderate-power radar transmit modules |
| CTE Z-axis | 24 ppm/C | Matches copper-plated via expansion for reliable interconnects |
| CTE X/Y | 17 ppm/C | Compatible with surface-mount component attachment |
| Decomposition Temperature | 500C (TGA) | Survives aggressive lead-free soldering profiles |
| Moisture Absorption | 0.04% | Negligible Dk shift in humid automotive underhood environments |
| Copper Peel Strength | 0.90 N/mm (1 oz ED) | Maintains circuit adhesion through thermal cycling |
| Density | 2.1 g/cm3 | Lightweight construction for antenna radome integration |
| Standard Thickness | 0.13 - 1.52 mm | Full range for stripline and microstrip configurations |
Why RO3003 Dominates Automotive Radar
At 77 GHz, the free-space wavelength is 3.9 mm. Inside RO3003 (Dk 3.00), the guided wavelength drops to approximately 2.25 mm. This means a patch antenna element is roughly 1.1 mm across, and a half-percent Dk variation translates to 11 microns of effective length error. RO3003 achieves the tightest Dk tolerance in its class specifically to address this sensitivity.
The ceramic filler eliminates glass-weave artifacts entirely. In woven-glass laminates, signals traveling parallel versus diagonal to the weave pattern experience different effective Dk values (the so-called fiber weave effect). At 77 GHz, this causes unacceptable phase errors in phased-array beam-forming networks. RO3003's homogeneous fill structure provides truly isotropic propagation.
For production volumes, RO3003 panels are available in 12x18 inch and 24x18 inch formats. The material processes using standard PTFE fabrication techniques including sodium etch or plasma treatment for copper adhesion, with carbide or diamond-coated tooling for routing.
Isotropic Dk
No fiber weave effect ensures identical propagation in all directions for phased-array beam accuracy
AEC-Q100 Ecosystem
Qualified in production radar modules meeting automotive reliability standards
Tight Dk Tolerance
Plus/minus 0.04 specification enables consistent antenna performance across production lots
Thermal Stability
Dk variation under 50 ppm/C from -40 to +150C operating range
RO3003 vs. Alternative mmWave Laminates
Key parameters for 77 GHz radar and mmWave circuit design
| Material | Dk | Df | Best For |
|---|---|---|---|
| Rogers RO3003This page | 3.00 | 0.0010 | 77 GHz radar, mmWave front-ends |
| Rogers RO3006 | 6.15 | 0.0020 | Miniaturized GPS/GNSS antennas |
| Rogers RT/duroid 5880 | 2.20 | 0.0009 | Low-loss satellite feeds |
| Rogers RO4350B | 3.48 | 0.0037 | Cost-effective RF to 40 GHz |
| Taconic TLY-5 | 2.20 | 0.0009 | Military phased arrays |
Rogers RO3003 Applications
77 GHz automotive radar, mmWave 5G front-end modules, and satellite communication systems requiring phase stability through millimeter-wave frequencies
77 GHz Automotive Radar
Long-range and short-range ADAS radar sensors for adaptive cruise control, collision avoidance, and autonomous driving
5G mmWave Antennas
28 GHz and 39 GHz antenna-in-package modules for 5G NR base stations and customer premises equipment
Satellite Communications
Ka-band and V-band feed networks for LEO constellation terminals
Military Radar Systems
W-band seeker heads and fire-control radar front-end modules
Backhaul Radio Links
E-band (71-86 GHz) point-to-point radio modem circuits
mmWave Test Fixtures
Calibration substrates and probe-launch transitions for frequencies above 50 GHz
Design Guidelines for RO3003
Trace width calculations for 50-ohm microstrip on RO3003 should use the process Dk value of 3.00, not the design Dk. For 0.254 mm (10 mil) substrate, a 50-ohm microstrip is approximately 0.64 mm wide. Always verify with 2.5D electromagnetic simulation tools for frequencies above 40 GHz where dispersion effects become significant.
Panel utilization requires careful attention to grain direction marking. While RO3003 has no glass weave, the ceramic fill distribution can vary slightly between panel center and edges. Request panels from the same production lot for phased-array applications requiring element-to-element phase matching better than 5 degrees.
Get Instant QuoteImpedance Control
Use process Dk 3.00 with 2.5D EM simulation; expect +/- 3 ohm tolerance on production 50-ohm lines
Hybrid Stackups
Bond with RO4450F prepreg (Dk 3.52) for cost-optimized RF plus digital multilayer builds
Thermal Management
Add thermal vias at 0.6 mm pitch under power amplifier die-attach pads
Fabrication Notes
Specify sodium etch or plasma surface treatment; carbide drilling; avoid mechanical scoring
Genuine Rogers RO3003, Verified on Every Order
Material CoC
Certificate of Conformance with lot number ships with every order.
Stock Verified
We confirm laminate availability before order confirmation.
No Substitutions
Specified material guaranteed — never swapped without written approval.
FAQ
Rogers RO3003 Questions
What frequency range is RO3003 suitable for?
RO3003 is characterized and proven from DC through 110 GHz. It is most commonly specified for applications above 24 GHz where its absence of fiber weave effect provides critical performance advantages over glass-reinforced alternatives.
Can RO3003 be used in multilayer PCBs?
Yes. RO3003 works in multilayer constructions using Rogers RO4450F or RO3003 bondply as interlayer adhesive. Hybrid stackups combining RO3003 RF layers with FR-4 digital layers are common in radar module designs.
How does RO3003 compare to RO3003G2?
RO3003G2 is a newer variant with enhanced copper adhesion using a proprietary surface treatment, eliminating the need for sodium etch. Electrical properties are identical. G2 is preferred for new designs due to simplified processing.
What is the minimum trace width achievable on RO3003?
Standard etching achieves 75-100 micron traces reliably. For finer features needed at 77 GHz, specify 0.5 oz copper and work with fabricators experienced in PTFE fine-line processing.
Is RO3003 suitable for flex or rigid-flex designs?
No. RO3003 is a rigid laminate. For flexible mmWave circuits, consider liquid crystal polymer (LCP) substrates which offer comparable loss performance with flex capability.
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