Head-to-Head Specification Comparison
| Key Parameter | JIUYAO HJY340A-M (The Low-Loss Purist) | Rogers RO4003C™ (The Benchmark) | Engineering Insight (Why it matters) |
|---|---|---|---|
| Dielectric Constant (Dk) @ 10 GHz | 3.38 ± 0.05 | 3.38 ± 0.05 | Exact Match. Lower Dk translates to reduced parasitic capacitance and faster signal propagation. Drop-in ready for existing layouts. |
| Dissipation Factor (Df) @ 10 GHz | 0.0027 | 0.0027 | Ultra-Low Loss. Critical for combating insertion loss at 24GHz and beyond, especially when dealing with conductive losses from surface finishes. |
| Flame Retardant System UL 94 Rating | Non-Brominated (Not V-0 rated) | Non-Brominated (Not V-0 rated) | By eliminating brominated flame retardants, the resin polarity is minimized, resulting in pristine, uncompromised high-frequency electrical performance. |
| X/Y-Axis CTE -55°C to 288°C (ppm/°C) | 11 / 14 | 11 / 14 | Closely matched to copper (17 ppm/°C). Guarantees exceptional dimensional stability and precise registration during complex multilayer lamination. |
| Desmear Process PCB Fabrication | Standard Chemical (Concentrated Sulfuric Acid) | Plasma / Chemical | Cost Killer. Achieves PTFE-like performance while maintaining standard FR-4 processability. No expensive plasma etching required. |
*RO4003C™ is a trademark of Rogers Corporation. Data is for technical reference only.
The Engineering Logic Behind HJY340A-M
The Obsession with Insertion Loss
At 24GHz and beyond, gain margin is unforgiving. With an ultra-low Df of 0.0027, HJY340A-M significantly flattens the attenuation curve. This allows RF architects to eliminate unnecessary amplifier stages or compensate for severe conductor losses, reducing overall module power consumption.
The Pure Resin Advantage
To achieve absolute peak RF performance, HJY340A-M intentionally abandons halogenated flame retardants. This pure hydrocarbon matrix not only rivals PTFE electrically but also inherently possesses excellent radiation resistance—making it a prime candidate for uncompromised aerospace applications.
Flawless Multilayer Registration
High-frequency multilayer boards demand precise layer-to-layer alignment. The X/Y-axis CTE of HJY340A-M (11/14 ppm/°C) closely mimics that of copper. When processing large-format panels, its minimal shrinkage guarantees exceptional drilling accuracy, preventing via-registration failures.
Frequently Asked Questions (FAQ)
Why is HJY340A-M not rated UL 94 V-0 for flammability?
Can I replace RO4003C™ with HJY340A-M without changing my layout?
Does this material require Plasma Desmear like PTFE?
Ideal Applications for Df 0.0027
When UL94 V-0 is not strictly mandated, but signal purity is mandatory.