Breakthrough Thermal Management Solutions: Comparative Test Results of DSN5017+Copper Foil Vs. DSN5070 Graphite Sheets

Advancing Thermal Management Technology

In the rapidly evolving electronics industry, effective thermal management has become a critical factor in ensuring device performance, reliability, and longevity. 

Dasen's R&D team conducted comprehensive 30-minute temperature rise tests and thermal conductivity analysis to evaluate two advanced thermal management solutions: 

DSN5017 graphite composite with 50μm copper foil and the DSN5070 graphite sheet.

This comparative study aims to provide valuable insights for engineers and product designers seeking optimal thermal solutions for high-performance electronic devices.

Test Methodology and Setup

The tests were conducted under strictly controlled conditions to ensure accuracy and reliability of the results.

Test Parameters

· Test Power: 3 Watts (simulating real-world high-load conditions)

· Test Duration: 30 Minutes (allowing for thermal equilibrium assessment)

· Sample Dimensions: 60mm × 90mm (standardized for consistent comparison)

· Measurement Equipment: High-precision thermocouple sensors

· Temperature Monitoring: Three measurement points (T0, T1, T2) for comprehensive analysis

Test Samples

1. DSN5017 Composite: Graphite sheet with adhesive and 50μm copper foil (thickness: 68.2μm)

2. DSN5070 Pure Graphite: High-performance graphite sheet (thickness: 64.0μm)

Key Test Results and Analysis

1. Temperature Rise Performance

The 30-minute temperature rise test revealed significant differences in thermal dissipation capabilities between the two samples.

Key Findings:

· DSN5070 pure graphite demonstrated superior temperature control, with an 8.3% lower average temperature rise

· The pure graphite sheet maintained more stable thermal performance across all three measurement points

· Temperature distribution was more uniform in the DSN5070 sample, indicating better heat spreading capability

2. Thermal Conductivity Analysis

Thermal conductivity testing provided deeper insights into the heat transfer capabilities of each material.

Key Findings:

· The DSN5017+copper foil composite showed exceptional thermal conductivity, especially with the copper side facing down

· The composite solution delivered 40.1% higher thermal conductivity compared to pure graphite

· Despite higher density (3.6x), the composite maintained excellent heat transfer efficiency

· Thermal diffusivity measurements confirmed the composite's superior heat spreading rate

Practical Applications and Recommendations

Based on the comprehensive test results, we offer the following application-specific recommendations:

For High-Density Heat Sources

· Recommended Solution: DSN5017+50μm Copper Foil Composite

· Ideal Applications: CPU/GPU heat sinks High-power LED lighting Power electronics and inverters Industrial control systems

· Benefits: Superior heat transfer for concentrated heat sources requiring rapid heat extraction

For Temperature-Sensitive Components

· Recommended Solution: DSN5070 Pure Graphite

· Ideal Applications: Mobile devices and wearables Consumer electronics Medical equipment Aerospace components

· Benefits: Lower overall temperature rise and better thermal stability for delicate components

For Balanced Performance Requirements

· Recommendation: Application-specific selection based on thermal density and space constraints

· Considerations: Weight limitations (DSN5070 offers 73% weight reduction) Installation orientation (copper side direction for DSN5017) Environmental conditions and operating temperatures

Conclusion: Choosing the Right Thermal Solution

The comparative testing of DSN5017+copper foil composite and DSN5070 pure graphite sheets highlights the importance of selecting application-specific thermal management solutions.

· DSN5017+Copper Foil excels in high-heat-density applications requiring maximum heat transfer efficiency

· DSN5070 Graphite provides superior temperature control and weight advantages for space-constrained designs

· Both solutions demonstrate exceptional thermal performance compared to traditional thermal management materials

As electronic devices continue to shrink while delivering higher performance, these advanced graphite-based solutions offer versatile options to address the ever-increasing thermal challenges in modern electronics design.