1. Introduction
The Radxa Heatsink 4025A is an aluminum profile, tower-style passive cooler specifically designed to enhance heat dissipation for Radxa ROCK 5B, 5B+, and 5T single board computers. Its three-dimensional fin design significantly increases the heat dissipation area, ensuring efficient thermal management for your SBC.
2. Key Features
- Aluminum Profile / Tower Cooling: Optimized design for maximum heat dissipation.
- Compatibility: Specifically designed for Radxa ROCK 5B, ROCK 5B+, and ROCK 5T single board computers.
- Low-Profile Spring Fastener: Ensures a secure and tight fit while avoiding interference with other SBC components.
- Easy Installation: Designed for straightforward and quick setup.
3. Package Contents
Please verify that all items are present in your package:
- 1x Heatsink 4025A
- 1x Thermal pad (22 x 22 x 0.8 mm)
- 1x Thermal pad (40 x 40 x 1.0 mm)
4. Installation Guide
Follow these steps to properly install the Radxa Heatsink 4025A on your ROCK 5B/5B+/5T board:
Step 01: Apply Smaller Thermal Pad
Attach the 22 x 22 x 0.8 mm thermal pad directly to the System-on-Chip (SoC) on your Radxa board. Ensure it is centered and makes good contact with the SoC surface.
Diagram illustrating the placement of the smaller thermal pad on the SoC. Step 02: Apply Larger Thermal Pad
Place the 40 x 40 x 1.0 mm thermal pad near the SoC. This pad is intended for insulation and additional heat dissipation for surrounding components.
Diagram illustrating the placement of the larger thermal pad next to the SoC. Step 03: Secure the Heatsink
Align the heatsink with the mounting holes on the board. Gently press down on the plastic pins until they snap into place, securing the heatsink firmly to the board. Ensure the heatsink makes even contact with the thermal pads.
Diagram illustrating how to align and secure the heatsink using the spring fasteners.
5. Operation
The Radxa Heatsink 4025A is a passive cooling solution. Once installed, it operates continuously to dissipate heat from your Radxa ROCK SBC. No additional configuration or power is required for its basic function. Ensure adequate airflow around your SBC for optimal cooling performance.
6. Maintenance
- Cleaning: Periodically inspect the heatsink for dust accumulation. Use a soft brush or compressed air to gently remove any dust from the fins to maintain optimal heat dissipation.
- Inspection: Ensure the heatsink remains securely fastened to the board. If it becomes loose, re-press the plastic pins to secure it.
- Thermal Pads: The thermal pads are designed for long-term use. If the heatsink is removed and reinstalled, or if you notice a significant drop in cooling performance, consider replacing the thermal pads.
7. Troubleshooting
- Issue: Board is still overheating after heatsink installation.
- Check Installation: Ensure the heatsink is firmly attached and makes good contact with the thermal pads and SoC.
- Thermal Pad Placement: Verify that the thermal pads are correctly positioned on the SoC and adjacent components.
- Airflow: Ensure your SBC enclosure or environment provides sufficient airflow around the heatsink. Restricted airflow can hinder passive cooling.
- Environmental Temperature: Operating in a very hot environment may exceed the passive cooling capabilities. Consider active cooling solutions if necessary.
- Issue: Heatsink feels loose.
- Re-secure Pins: Gently press down on the plastic spring fasteners until they click into place, ensuring a tight fit.
8. Specifications
| Feature | Detail |
|---|---|
| Model | 4025A |
| Accessory Type | Heat Sink |
| Dimensions (approx.) | 40mm x 40mm x 25mm |
| Material | Aluminum Profile |
| Cooling Method | Passive (Tower Cooling) |
| Compatible With | Radxa ROCK 5B, ROCK 5B+, ROCK 5T |
| Fastener Type | Low-Profile Spring Fastener |
| Battery Included | No |
| Typical Application Fields | Internet of Things (IoT) |
| High-concerned chemical | None |
| Origin | Mainland China |
9. User Tips
- For Radxa ROCK 5T users, this heatsink is designed to allow simultaneous installation with the Radxa 25W PoE+ Module 5514, utilizing a single cable for streamlined wiring.
- Always ensure your SBC is powered off and disconnected from power before installing or removing the heatsink.
- Consider the ambient temperature of your operating environment. While effective, passive heatsinks perform best in well-ventilated areas.
10. Warranty and Support
For any product-related inquiries, technical support, or warranty claims, please contact your original point of purchase or the manufacturer directly. Keep your purchase receipt as proof of purchase.
