Die Cast Heat Sinks Manufacturers & Suppliers
What is Die Cast Heat Sinks
Die cast heat sinks are thermal components formed by injecting molten metal (zinc/aluminum) into steel molds under high pressure. They enable complex 3D structures with embedded threads, curved bases, or irregular fins in a single step (tolerance: ±0.1mm). With thermal conductivity of 80-120W/mK, they excel in high-vibration environments like automotive electronics and solar inverter.
| Method | Die Cast | Extrusion | Skiving |
|---|---|---|---|
| Min Fin Thickness | 0.8mm | 1.2mm | 0.2mm |
| Design Complexity | ★★★★★ | ★★☆ | ★★★ |
Featured
Our advantages
- Mature large-scale production capacity, with multiple die-casting machines, monthly production capacity is stable at more than 100,000 pieces, supporting urgent orders expedited production (fastest delivery in 7 days).
- Developed more than 200 sets of die-casting molds, covering mainstream industries such as automotive electronics and industrial controllers, and can reuse similar designs to reduce customer costs.
- Each batch is sampled for salt spray test (48 hours) and hot and cold shock test (-40℃~150℃) to ensure reliability in outdoor scenes.
- The mold cost is open, and a detailed mold cost list (steel cost/design fee/trial mold fee) is provided, without hidden price increases.
CUSTOMIZATION OPTIONS
| Parameter | Options | Technical Notes |
|---|---|---|
| Material | Zamak 3/5 Zinc A380/ADC12 Aluminum AZ91D Magnesium | Zinc best for thin-wall complexity |
| Surface Finish | Nickel Plating Micro-arc Oxidation Thermal Coating | Micro-arc withstands >1000V |
| Post-Processing | CNC Machining Laser Marking Thermal Paste Pre-apply | Flatness ±0.02mm/100mm |