CLTE-XT PCB: 2-Layer, 5.1mil Core, 0.25mm Thickness with Immersion
Gold Finish
(All PCBs are custom-manufactured. Reference images and parameters
may vary based on your design requirements.)
Overview of CLTE-XT 2-Layer PCB
The CLTE-XT PCB is a high-performance 2-layer rigid PCB designed
for applications requiring low insertion loss, dimensional
stability, and consistent electrical performance. Manufactured
using Rogers CLTE-XT laminates, this PCB features a 5.1mil core and
a finished thickness of 0.25mm, making it ideal for high-frequency
applications such as advanced driver assistance systems (ADAS),
patch antennas, and radar systems.
With its tight dielectric constant tolerance and low dissipation
factor, the CLTE-XT PCB offers reliable performance across
temperature variations, ensuring high plated-through-hole
reliability and repeatable lot-to-lot consistency. Its immersion
gold surface finish further enhances durability and solderability,
making it a trusted choice for engineers worldwide.
PCB Construction Details
| Parameter | Specification |
| Base Material | Rogers CLTE-XT |
| Layer Count | 2 layers |
| Board Dimensions | 63mm x 35mm |
| Minimum Trace/Space | 5/6 mils |
| Minimum Hole Size | 0.3mm |
| Blind Vias | None |
| Finished Thickness | 0.25mm |
| Copper Weight | 1oz (1.4 mils) outer layers |
| Via Plating Thickness | 20μm |
| Surface Finish | Immersion Gold |
| Top Silkscreen | None |
| Bottom Silkscreen | None |
| Top Solder Mask | None |
| Bottom Solder Mask | None |
| Electrical Testing | 100% tested before shipment |
PCB Stackup
The CLTE-XT PCB stackup is simple yet effective, ensuring low loss
tangent and dimensional accuracy:
| Layer | Material | Thickness |
| Copper Layer 1 | Copper (1oz) | 35μm |
| Dielectric Layer | Rogers CLTE-XT Core | 0.129mm (5.1mil) |
| Copper Layer 2 | Copper (1oz) | 35μm |
Introduction to CLTE-XT Material
Rogers CLTE-XT laminates are composites of micro-dispersed ceramic
filler, PTFE, and woven fiberglass reinforcement, designed to
provide the lowest insertion loss and the highest dimensional
stability in their class. With a dielectric constant (Dk) ranging
from 2.79 to 2.94 and a dissipation factor of just 0.0010 at 10GHz,
CLTE-XT ensures superior electrical performance, even at high
frequencies.
Key Features of CLTE-XT
- Stable Dielectric Constant (Dk): Ranges between 2.79 and 2.94, with ±0.03 tolerance, ensuring
consistent performance.
- Low Dissipation Factor: Just 0.0010 at 10GHz for minimal signal loss.
- Thermal Stability: High Td of 539°C and low CTE values (X: 12.7 ppm/°C, Y: 13.7
ppm/°C, Z: 40.8 ppm/°C).
- Moisture Resistance: Absorption rate of 0.02%, ensuring stable performance in humid
conditions.
Benefits of CLTE-XT
- High Reliability: Excellent plated-through-hole performance and repeatable
lot-to-lot results.
- Dimensional Stability: Reduced stress during attachment to ceramic active devices.
- Low Circuit Losses: Maintains performance without sacrificing structural integrity.
Applications
- Advanced Driver Assistance Systems (ADAS)
- Patch Antennas
- Phased Array Antennas
- Power Amplifiers
- Ground-Based and Airborne Radar Systems
Conclusion
The CLTE-XT 2-layer PCB is a high-performance solution for RF and
microwave applications, offering low insertion loss, dimensional
accuracy, and excellent mechanical durability. With its 5.1mil
Rogers CLTE-XT core and immersion gold finish, it provides the
reliability and consistency required for critical communication
systems like ADAS, satellites, and radar systems.
Engineered to meet IPC-Class-2 standards and available worldwide,
the CLTE-XT PCB is the perfect choice for engineers seeking
cost-effective, high-frequency solutions.
