2-Layer TRF-45 High-Frequency PCB – 32mil (0.9mm) with Immersion Gold Finish
Product Introduction
We present our 2-Layer TRF-45 PCB – a high-performance, low-loss circuit board engineered for reliable RF and microwave applications. Fabricated with Taconic TRF-45 ceramic-filled PTFE laminate and finished with Immersion Gold (ENIG) , this 0.9mm (32mil) board delivers a stable dielectric constant (Dk 4.5 ±0.15 @ 10 GHz), low dissipation factor (Df 0.0035), and exceptional dimensional stability. The woven-glass reinforcement enables standard PTFE processing methods (shearing, drilling, plating), reducing lead times while maintaining high reliability for antenna and wireless communication systems.
Key Specifications
| Parameter | Details |
| Base Material | Taconic TRF-45 (Ceramic-filled, woven-glass reinforced PTFE) |
| Layer Count | 2 Layers (Double-sided) |
| Finished Thickness | 0.9 mm (32 mil) |
| Copper Weight | 1 oz (35 μm) on both outer layers |
| Min Trace/Space | 4 / 6 mils |
| Min Hole Size | 0.25 mm (Mechanical drilling) |
| Via Plating Thickness | 20 μm |
| Surface Finish | Immersion Gold (ENIG) |
| Solder Mask | Top: Green / Bottom: None |
| Silkscreen | Top: White / Bottom: None |
| Electrical Test | 100% prior to shipment |
| Artwork Format | Gerber RS-274-X |
| Quality Standard | IPC-Class-2 |
| Availability | Worldwide |
PCB Stackup (2-Layer Rigid)
| Layer | Material | Thickness |
| Top Copper | 1 oz (35 μm) | – |
| Substrate | Taconic TRF-45 Core | 0.813 mm (32 mil) |
| Bottom Copper | 1 oz (35 μm) | – |
Note: No blind vias – all interconnections are through-hole vias, simplifying fabrication and reducing cost.
PCB Statistics
Dimensions: 105 mm × 76 mm ±0.15 mm (1 piece)
Components: 42
Total Pads: 38 (25 thru-hole, 13 SMT on top, 0 on bottom)
Vias: 15
Nets: 2 (Simple, high-frequency signal paths)
Why TRF-45?
TRF-45 represents Taconic's next-generation low-loss, thermally stable laminate technology. As a ceramic-filled PTFE with woven-glass reinforcement, it offers superior dimensional stability compared to non-reinforced PTFE materials. The low and consistent Z-axis expansion across a wide temperature range (including lead-free soldering conditions) ensures reliable plated through-hole (PTH) integrity. Critically, TRF-45 can be sheared, drilled, and plated using standard PTFE woven fiberglass methods – no specialized processing required.
Key Features of TRF-45
| Parameter | Value |
| Dielectric Constant (Dk) | 4.5 ±0.15 @ 10 GHz (stable over temperature & frequency) |
| Dissipation Factor (Df) | 0.0035 @ 10 GHz |
| Moisture Absorption | 0.06% |
| CTE – X axis | 9 ppm/°C (50–150°C) |
| CTE – Y axis | 9 ppm/°C (50–150°C) |
| CTE – Z axis | 40 ppm/°C (50–150°C) |
| Thermal Conductivity | 0.43 W/m·K |
| Flammability Rating | UL 94-V0 |
Benefits of This 32mil TRF-45 PCB
Stable Dk Over Temperature: 4.5 ±0.15 ensures consistent impedance and phase response across operating conditions – critical for antenna and filter designs.
Low Loss Performance: Df of 0.0035 at 10 GHz minimizes signal attenuation for efficient RF transmission.
Dimensional Stability: Woven-glass reinforcement provides excellent X/Y stability with CTE of 9 ppm/°C – matched closely to copper.
Reliable PTH Integrity: Low and consistent Z-axis expansion (40 ppm/°C) reduces via cracking risk during soldering and thermal cycling.
Process-Friendly: Can be sheared, drilled, and plated using standard PTFE woven fiberglass methods – no exotic handling required.
Immersion Gold Finish: Provides a flat, solderable, oxidation-resistant surface for fine-pitch SMT components (13 top SMT pads). Green solder mask on top protects critical traces while leaving bottom exposed for optimal RF grounding.
Low Moisture Absorption: 0.06% ensures stable electrical performance in humid environments.
Quality Assurance
100% electrical testing prior to shipment
IPC-Class-2 compliance
Full Gerber RS-274-X acceptance
ISO 9001 certified production
Typical Applications
Satellite Radio Antennas (SiriusXM, DAB)
RFID Antennas (UHF, microwave bands)
GPS Antennas (navigation, timing)
Patch Antennas for wireless communications
Low-Profile RF Modules
Automotive Telematics Antennas
Ordering Information
Submit your Gerber RS-274-X files and fabrication drawings. We support prototype to volume production with global shipping. Contact us for:
Impedance control reports
Dk/Df test verification
Volume pricing and lead times
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Taconic TRF-45 Dk 4.5 ceramic-filled PTFE laminate 2-Layer High-Frequency PCB – 32mil (0.9mm) with Immersion Gold Finish Images
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