CuClad 233 2-Layer 20mil PCB – High-Frequency RF Board with Immersion Gold Finish
1.Introduction of CuClad 233
Rogers CuClad 233 laminates are cross-piled, woven fiberglass and PTFE composite materials offering a low dielectric constant value of 2.33. These laminates utilize a medium fiberglass/PTFE ratio to balance low dielectric constant (Dk) and improved dissipation factor without compromising mechanical properties. The cross-piled construction ensures greater dimensional stability along with balanced electrical and mechanical performance.
2.Key Features
Dielectric Constant (Dk) of 2.33 at 10GHz / 1MHz
Dissipation Factor of 0.0013 at 10GHz
Low Moisture Absorption of 0.02%
Strong Peel Strength of 14 lbs/in
Low Outgassing: TML 0.01%, CVCM 0.01%, WVR 0%
Cross-Plied Woven Fiberglass with 90° alternating plies
High PTFE to Glass Ratio
Superior dielectric constant uniformity compared to non-woven reinforced laminates
3.Benefits
Stable Dk over a wide frequency range
Supports wider line widths for reduced insertion loss
Low circuit losses at high frequencies
Suitable for large PCBs and antenna formats
CTE in-plane matches aluminum for aerospace applications
4.PCB Construction Details
| Parameter | Value / Specification |
|---|---|
| Base Material | CuClad 233 |
| Layer Count | 2-layer |
| Board Dimensions | 108 mm x 59 mm (±0.15mm) |
| Minimum Trace/Space | 6/8 mils |
| Minimum Hole Size | 0.3 mm |
| Blind Vias | No |
| Finished Board Thickness | 0.6 mm |
| Finished Cu Weight | 1 oz (1.4 mils) outer layers |
| Via Plating Thickness | 20 μm |
| Surface Finish | Immersion Gold |
| Top Silkscreen | No |
| Bottom Silkscreen | No |
| Top Solder Mask | No |
| Bottom Solder Mask | No |
| Electrical Test | 100% tested prior to shipment |
5.PCB Stackup (2-Layer Rigid Structure)
Copper_layer_1 - 35 μm
Rogers CuClad 233 Core - 0.508 mm (20mil)
Copper_layer_2 - 35 μm
6.PCB Statistics:
Components: 35
Total Pads: 127
Thru Hole Pads: 73
Top SMT Pads: 54
Bottom SMT Pads: 0
Vias: 99
Nets: 2
7.Typical Applications
Radars, Electronic Countermeasures, Electronic Support Measures
Microwave Components (LNAs, filters, couplers, etc.)
8.Quality Assurance
IPC-Class 2 compliant
100% electrical tested
Global availability
Gerber RS-274X support