4 Pack Anodized Aluminum Heat Sinks 40 By 40 By 20mm Kit With 1.57 By 1.57 By 0.79 Inches Fins For Passive Cooling Of Electronics VRMs LED Modules Memory Chips Peltier Devices And 3D Printer Stepper Motors Like NEMA17

4-Pack Anodized Aluminum 40x40x20mm Heat Sink Kit
✔️ 4 pcs pack; 40x40x20 mm, anodized aluminum, passive cooling

These compact anodized aluminum heat sinks are designed for passive cooling of electronic components in small enclosures, including VRMs, LED drivers, memory chips, Peltier devices, and NEMA17 stepper motors used in hobby CNC machines and 3D printers.

✅ 40x40x20 mm (1.57x1.57x0.79 in), weight 41 g per sink
✅ Pack: 4 pcs in kit
✅ Material: anodized aluminum with a smooth, corrosion-resistant finish
✅ Thermal adhesive paste compatible (paste not included)

💡 What is a passive cooling heat sink kit used for in small electronics and DIY projects?

This handy guide highlights typical use cases and practical setup tips.

• Dissipates heat from LEDs, VRMs, regulators, and motor drivers
• Supports NEMA17 stepper motors and TEC modules for stable operation
• Fits compact enclosures with 40x40 mm sinks for neat layouts
• Easy retrofit with compatible thermal paste (paste not included)