Inverter Heat Sink Plate

Name: Inverter Heat Sink Plate | Power Electronics Cooling - Frigate
Price: 249.00 USD
Availability: InStock

The Inverter Heat Sink Plate is engineered to pflegen consistent and efficient thermal transfer from high-power semiconductor packages such as IGBTs and MOSFETs. Utilization of high-purity aluminum alloys (e.g., 6063-T5 or 1050 series) ensures thermal conductivity in the range of 200–235 W/m·K. This supports low thermal resistance pathways and avoids junction overheating. The design accommodates both uniform and asymmetrical thermal loading, ensuring stability in environments with varying heat flux densities.

Material Grade & Specification

Aluminum 6063-T6 or Aluminum 1100 (for high thermal conductivity), ASTM B221 for aluminum extrusions

Dimensional Tolerances

±0.005 inches (±0.13 mm) for critical dimensions, ±0.002 inches (±0.05 mm) for mounting holes and extrusions

Surface Finish Requirement

Ra ≤ 1.6 µm (63 µin) for critical contact surfaces; Ra ≤ 3.2 µm (125 µin) for non-critical surfaces

Heat Treatment Specification

Solution heat-treated and artificially aged (T6 temper) to increase strength and improve heat dissipation performance

Thermal Conductivity Requirement

≥ 200 W/m·K (for Aluminum 6063); custom-specific requirements may apply for optimal thermal dissipation

Product Description

Performance of the Inverter Heat Sink Plate is enhanced through precision-engineered fin arrays with geometries tailored to specific convection mechanisms. For forced air-cooled inverter systems, densely packed straight or pin fins with optimized hydraulic diameters reduce thermal boundary layers and increase convective heat transfer coefficients. In natural convection scenarios, plate-fin arrays are spaced to maximize vertical airflow velocity and minimize thermal stagnation. Skived and extruded configurations are selected based on Reynolds number ranges and allowable pressure drop.

Flatness and Straightness Tolerances

Flatness ≤ 0.005 inches (0.13 mm), Straightness ≤ 0.01 inches (0.25 mm) for surface alignment and integrity

Hardness Requirement

70-80 HRB (for Aluminum 6063-T6), or as per custom specification for hardness related to wear resistance

Non-Destructive Testing (NDT) Requirement

Dye Penetrant Testing (DPT), Ultrasonic Testing (UT) for internal defects, or as per custom requirements

Coating/Plating Requirement

Anodizing (Clear or Colored) for corrosion resistance and enhanced surface finish, or as per custom specification

Certification Standard

ISO 9001:2015, IEC 60068 (for environmental testing of electronic components), RoHS Compliance (if applicable)

Technical Advantages

Critical to minimizing junction-to-case thermal resistance, the Inverter Heat Sink Plate is machined to flatness tolerances below 0.05 mm and surface roughness values under Ra 1.6 µm. These characteristics ensure reliable contact with thermal interface materials (TIMs) such as phase-change pads or gap fillers. Improved contact conductance lowers thermal impedance and maintains predictable thermal performance over thermal cycling, particularly in high-current inverter modules.

The Inverter Heat Sink Plate is subjected to multiaxial stress during operation, especially in mobile and vibration-prone installations. To ensure dimensional stability and fatigue strength, materials are selected with elongation ≥10% and yield strength exceeding 90 MPa post heat treatment. Mechanical robustness is validated through cyclic thermal shock testing (-40°C to +125°C) and modal analysis to avoid resonance-induced fatigue. Fin-to-base joint designs are reinforced to prevent delamination under shear stress from thermal expansion mismatch.

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Industry Applications

Electric Vehicle Traction Inverters

Manages thermal loads from IGBT and SiC modules operating at high switching frequencies in compact, vibration-prone automotive environments.

Photovoltaic Solar Inverters

Dissipates continuous thermal energy from DC-AC conversion stages under variable irradiance and ambient temperature conditions in outdoor installations.

Industrial Motor Drives

Controls temperature rise in VFD systems driving three-phase induction motors under high torque and continuous duty cycles.

Wind Turbine Power Converters

Maintains low thermal gradients across high-power converter modules exposed to fluctuating wind speeds and long operational hours.

Rail Traction Systems

Supports heat extraction from high-voltage inverter stacks subjected to dynamic braking cycles and extended high-power output durations.

UPS (Uninterruptible Power Supply) Systems

Stabilizes inverter semiconductor temperatures during peak switching loads and thermal ramp-up during grid-to-battery transfer operations.

Thermal Zoning for High-Power Module Integration

The Inverter Heat Sink Plate enables precise thermal zoning by incorporating variable fin densities and optional heat pipes to address uneven heat loads from multiple power modules. Sub-10°C temperature differentials are maintained across zones, while anisotropic spreaders like graphite layers or vapor chambers compensate for asymmetrical module placement.

To prevent corrosion and thermal degradation, the Inverter Heat Sink Plate is treated with MIL-A-8625 Type II anodizing or MIL-DTL-5541 chromate conversion. These coatings resist oxidation and galvanic reactions without exceeding a thermal resistance of 0.1°C·in²/W at critical contact surfaces.

Having Doubts? Our FAQ

Check all our Frequently Asked Question

How does Frigate ensure thermal uniformity across large Inverter Heat Sink Plates for multi-module inverters?

Frigate uses simulation-driven thermal zoning to design fin geometry and spreader placement. Graphite sheets or vapor chambers are embedded in specific regions to balance heat flow. This keeps thermal gradients below 10°C across high-density module arrays. Such control improves inverter efficiency and extends power device life.

What methods does Frigate use to achieve precise flatness in Inverter Heat Sink Plate surfaces?

Frigate employs CNC machining with inline coordinate measuring systems to pflegen flatness under 0.05 mm. This ensures high-quality contact with thermal interface materials. Such precision lowers thermal contact resistance and improves reliability under thermal cycling. Final plates are inspected using surface profilometers for verification.

How are Frigate’s Inverter Heat Sink Plates adapted for corrosive environments like coastal solar farms?

Plates are treated with MIL-spec anodizing or chromate conversion layers to prevent oxidation. These coatings are selected for low thermal impedance at interface regions. Materials are also chosen to avoid galvanic reactions with dissimilar inverter housing metals. Coated surfaces are tested for salt-spray resistance as per ASTM B117.

What quality checks are performed by Frigate for mechanical durability of Inverter Heat Sink Plates?

Fregatte performs thermal cycling (-40°C to +125°C) and vibration endurance tests on heat sink assemblies. Structural FEA is used during design to prevent crack initiation zones. Heat-treated alloys with defined elongation and fatigue limits are used for critical load paths. All plates are validated under load profiles similar to field conditions.

How does Frigate design Inverter Heat Sink Plates for compatibility with advanced thermal interface materials?

Surface roughness is controlled under Ra 1.6 µm to support phase change or gap filler TIMs. Machining avoids sharp burrs to prevent TIM degradation. Frigate also tests bond line thickness uniformity post-assembly to ensure stable thermal resistance. Compatibility is validated using thermal resistance measurements under power cycling.

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