Aluminum Folded Fin Heatsink High Performance Thermal Management Cooling

Aluminum Folded Fin Heatsink is a high-performance thermal management component designed to efficiently dissipate heat from electronic and industrial devices via a dense, folded-fin structure made of aluminum foil/sheet.

• Material: Copper
• Size: 22.5 × 11.4 × 0.8 cm
• Weight: 0.08 kg
• Technology: Stamping
• Feature: Flexible and adjustable
• Surface Treatment: Oil-cleaning
• Heat Cooling Power: 30W

Every electrical and electronic component in a circuit generates heat during operation. High-power semiconducting devices like power transistors and optoelectronics such as LEDs and lasers generate considerable heat but have limited dissipation capability.

Component overheating leads to premature failure and can compromise entire circuit or system performance. Heat sinks provide essential cooling to overcome these challenges.

A heat sink is an electronic component that disperses heat from other components (primarily power transistors) into the surrounding medium, cooling them to improve performance, reliability, and prevent premature failure. For enhanced cooling, it often incorporates a fan or cooling device.

• Process: Thin aluminum sheets (0.1-0.5 mm typical, 0.2-1.2 mm common range) are precision-folded into a corrugated/zig-zag array, then bonded to an aluminum base plate via soldering, brazing, or high-performance thermal epoxy. This allows independent optimization of fin density and base thickness, and even mixed-material combinations (e.g., copper base + aluminum fins).
• Common Alloys: 1050/1100 (high purity, excellent thermal conductivity), 6061/6063 (good strength + thermal performance, cost-effective).
• Key Parameters: Fin pitch down to 0.5 mm, fin height up to 100 mm, fin width up to 500 mm.

• High Surface Area-to-Volume Ratio: Far denser than extruded fins, ideal for space-constrained, high-heat applications, with reduced thermal resistance (up to 60% vs. some traditional designs).
• Lightweight & Material-Efficient: Uses minimal aluminum while maximizing cooling surface.
• Flexible Design: Easy customization of fin height, pitch, and shape for forced/natural convection.
• Compatible with Heat Pipes/Vapor Chambers: Often integrated for enhanced thermal spreading in high-power systems.

Widely used in servers, telecom equipment, power inverters, LED lighting, automotive electronics, and industrial power supplies—especially where forced air cooling (fans) is available and space is limited.

• Thermal Load & Airflow: Calculate required thermal resistance (Rθ) and match to airflow (LFM/CFM); forced air works far better with dense folded fins.
• Fin Pitch & Height: Tighter pitch = more surface area, but may restrict airflow; taller fins boost convection but increase weight/backpressure.
• Bonding Quality: Poor soldering/brazing creates contact resistance—verify bond integrity via thermal imaging or resistance testing.
• Surface Treatment: Anodizing improves corrosion resistance and can slightly enhance radiation; black anodize helps in radiative cooling scenarios.