VC004 Vapor Chamber Heatsink with Zipper Fin for Broadcom Tomahawk 4 Switch

Core Technology: Three-Dimensional Heat Dissipation and Ultimate Space Utilization

1. Zipper Fin Technology Design

• Ultra-High-Density Heat Dissipation Array: Employs 0.2mm ultra-thin aluminum sheets in an interlocking zipper arrangement, achieving an effective heat dissipation area exceeding 4500 cm² within an 89.5mm height, improving airflow efficiency by over 40% compared to traditional fins.

• Optimized Aerodynamics: Fin orientation precisely matches the front-to-back airflow path of switches, reducing airflow resistance by 30% and allowing the use of lower-speed, longer-life fans.

• Enhanced Structural Stability: Innovative interlocking structure ensures the high-density fin array remains stable during transportation, vibration, and long-term operation, preventing fatigue damage from resonance.

2. C-Shaped Heat Pipe Three-Dimensional Layout

• Extreme Utilization of Vertical Space: Six Ø6mm high-performance heat pipes employ a C-shaped three-dimensional bend design, extending from the vapor chamber base in the vertical direction, fully utilizing the Z-axis space of the 3U chassis.

• Optimized Multi-Directional Heat Conduction: Heat pipes are arranged in central symmetry, ensuring rapid and uniform heat transfer from the chip center to the top fin array, improving heat conduction efficiency by 35%.

• Omni-Directional Mounting Adaptability: Internal wick structure is optimized for different mounting orientations, ensuring stable performance whether installed horizontally, vertically, or at any angle.

3. Vapor Chamber Base Integrated Design

• Full-Coverage Heat Spreading: The 300×112mm large-area vapor chamber base fully covers the Tomahawk 4 chip and surrounding high-power components, eliminating local hotspots.

• High-Strength Support Structure: Employs a matrix-style support pillar design, ensuring baseplate deformation is controlled within 0.1mm under the extreme 530W load.

• Transient Thermal Shock Buffering: Specially calculated working fluid capacity effectively absorbs instantaneous power peaks during chip startup and load transients, providing stable thermal buffering capability.

Target Application Scenarios and Value Proposition

Key Application Scenario Analysis

1. 400G/800G Data Center Spine/Leaf Switch Cooling

• Scenario Characteristics: Port density in next-gen data center switches continues to increase, single-chip power exceeds 500W, traditional cooling solutions can no longer meet the space constraints of 3U chassis.

• VC004 Value: Three-dimensional cooling design provides over 50% more cooling capacity than traditional solutions in the same space, supporting stable operation of the Tomahawk 4 chip at its full 530W configuration, ensuring all 400G ports operate at full line rate simultaneously.

2. Enterprise Core Switch & Campus Network Core Equipment

• Scenario Characteristics: Enterprise environments are sensitive to equipment noise and have limited maintenance resources, requiring low-noise, maintenance-free, highly reliable cooling solutions.

• VC004 Value: Optimized airflow design and low resistance characteristics enable the use of low-speed quiet fans, reducing system noise by 5-8 dBA; fully welded structure and nickel-plated surface ensure long-term maintenance-free operation, significantly reducing TCO.

3. Telecom Edge Computing & 5G Transport Equipment

• Scenario Characteristics: Edge server rooms have limited space and variable environmental conditions; equipment needs to adapt to harsh conditions like high temperature and humidity.

• VC004 Value: Compact 89.5mm height fits various edge cabinets; corrosion resistance of nickel plating adapts to temperature and humidity changes in edge environments; high-efficiency cooling capability ensures stable equipment performance even in 45°C high-temperature environments.

Multi-Layered Value for Customers

For R&D Teams (Technical Value)

• Breaks Space Limitations: Provides a ready-made solution to solve the 530W thermal challenge within a standard 3U chassis, allowing hardware engineers to focus on core functionality development.

• Simplifies Thermal Design Verification: Pre-validated thermal solution significantly shortens thermal simulation and testing cycles, accelerating time-to-market.

• Increases Design Flexibility: The heatsink's integrated design frees up PCB layout space, allowing more flexible signal routing and component placement.

For Product & Project Management (Business Value)

• Reduces R&D Risk: Adopts a mature, market-validated thermal solution, avoiding product delays or recall risks due to thermal issues.

• Optimizes Material Cost: Although the VC004 unit cost is higher, it can replace an entire traditional cooling system (baseplate + heat pipes + fins + brackets), reducing overall BOM cost by 15-20%.

• Accelerates Certification Process: Provides complete NEBS Level 3, ETSI, GR-63 certification test reports, helping products quickly pass operator and data center certifications.

For End Users & Operators (Long-Term Value)

• Reduces Operational Costs: High-efficiency cooling reduces fan power consumption, saving approximately $150-200 per device annually, with significant benefits at large-scale deployment.

• Improves Equipment Reliability: MTBF exceeding 200,000 hours extends equipment uptime, achieving 99.999% carrier-grade network availability standards.

• Protects Investment Value: Ample thermal headroom supports future performance upgrades via software updates or minor hardware modifications, extending equipment lifecycle.

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