# High Dielectric PCB Material Properties & Selection Guide

_Published: 2025-10-08_

Table of Contents

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- What is High Dielectric PCB Material?
- High Dielectric Constant PCB Material List & Properties
- Why Choose High Dielectric PCB Material for High Speed Applications?
- How to Choose PCB Dielectric Materials for High Speed Applications?
- How Much Does High Dielectric PCB Material Cost?
- Why Choose EBest Circuit (Best Technology) as High Dielectric PCB Material Supplier?
- How to Get a Quote for High Dielectric PCB Material?

Why choose **[high dielectric PCB material](https://www.bestpcbs.com/blog/2025/10/high-dielectric-pcb-material-properties-selection-guide/)**? Let’s discover its definition, material list and properties, benefits, selection guide, cost and recommend material supplier through this blog.

**Are you troubled with these problems?**

- Is high-frequency signal instability plaguing your designs? Could PCB dielectric constant fluctuations be causing impedance mismatch?
- Struggling with cost containment? Has the price surge of high-Dk materials disrupted your inventory planning?
- Is sample testing taking too long? Can you receive small-batch verification materials within 72 hours?

**As a high dielectric PCB material supplier, EBest Circuit (Best Technology) can provide you service and solutions:**

- Precise Dk/Df parameter matching: Full Rogers/Taconic inventory with 24-hour parameter traceability to eliminate design validation discrepancies.
- Price volatility buffer: Long-term agreements lock in costs, with off-season stock support and peak-season priority allocation.
- Sample readiness: 72-hour rapid slicing and delivery with batch-specific COA reports to accelerate design iterations.

**Welcome to contact us if you have any inquiry for high dielectric PCB materials: sales@bestpcbs.com.**

## What is High Dielectric PCB Material?

**[High Dielectric PCB Material](https://www.bestpcbs.com/blog/2025/10/high-dielectric-pcb-material-properties-selection-guide/) **(High Dk PCB) refers to specialized substrate materials engineered for high-frequency circuit applications (typically >1 GHz), characterized by two core attributes: high dielectric constant (Dk > 10) to enable compact signal transmission structures, and low dielectric loss (Df < 0.01) to minimize signal attenuation.

These materials are typically formulated using polytetrafluoroethylene (PTFE)-ceramic composites, hydrocarbon resins, or modified epoxy resins, with ceramic powders (such as barium titanate) incorporated to enhance dielectric performance. Such materials are particularly suitable for applications requiring miniaturization and high-frequency stability, including millimeter-wave radar systems and 5G base stations, where both compact design and signal integrity are critical.

[https://www.bestpcbs.com/blog/wp-content/uploads/2025/10/main-3.jpg](https://www.bestpcbs.com/blog/wp-content/uploads/2025/10/main-3.jpg)

## High Dielectric Constant PCB Material List & Properties

**Material Model**
**Dielectric Constant (Dk)**
**Dielectric Loss (Df)**
**Thermal Conductivity [W/(m·K)]**
**Thermal Stability (°C)**
**Properties**
**Application**

Rogers 4350B
3.48±0.05
0.0037@10GHz
0.69
280
Low loss, excellent high-frequency stability, glass fiber reinforced
5G base station antennas, mmWave radar

Taconic RF-35
3.5±0.05
0.0023@10GHz
0.7
260
Ultra-low loss, PTFE substrate, ideal for high-frequency transmission
Satellite communications, RF front-end modules

Isola I-SPEED
3.3-3.5
0.0025@10GHz
0.45
230
Low-profile design, precise impedance control, suitable for multi-layer stacking
High-speed server backplanes, optical modules

Nelco N4000-13
4.0±0.2
0.012@10GHz
0.35
200
Balanced high Dk and cost, suitable for mid-band applications
Automotive radar, consumer electronics

Mitsubishi M6
6.0±0.5
0.015@10GHz
0.3
180
High Dk enables miniaturization, but higher loss
Miniaturized antennas, IoT devices

Arlon AD350A
3.5±0.1
0.0028@10GHz
0.68
290
High-temperature PTFE material for extreme environments
Aerospace electronics, military equipment

## Why Choose High Dielectric PCB Material for High Speed Applications?

Reasons why choose **[high dielectric PCB material](https://www.bestpcbs.com/blog/2025/10/high-dielectric-pcb-material-properties-selection-guide/)** for high speed applications:

- Signal Integrity Boost: Stable Dk minimizes phase distortion/impedance mismatch in 10GHz+ scenarios, preventing signal reflection-induced eye closure.
- Size Optimization: Enables shorter traces (λ ∝ 1/√Dk) for compact designs like 5G mmWave arrays, reducing layer count and cost.
- Crosstalk/EMI Reduction: Enhanced field confinement reduces adjacent trace coupling, with low Df (