1. What is a Heat Sink Calculator (HSC)?

Definition: This calculator estimates the temperature rise of a heat sink based on the heat dissipation and thermal resistance.

Purpose: It helps engineers and designers determine the thermal performance of heat sinks in electronic cooling applications.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( \Delta T \) — Temperature rise (Kelvin)
• \( Q \) — Heat dissipation (Watts)
• \( \theta_{hsc} \) — Thermal resistance (Kelvin/Watt)

Explanation: The heat dissipation is multiplied by the thermal resistance to determine the temperature difference between the heat source and ambient.

3. Importance of Heat Sink Calculation

Details: Proper thermal management ensures electronic components operate within safe temperature limits, improving reliability and lifespan.

4. Using the Calculator

Tips: Enter the heat dissipation in Watts and thermal resistance in K/W (default 0.5 K/W). All values must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: What is thermal resistance?
A: Thermal resistance measures how effectively a heat sink transfers heat, with lower values indicating better performance.

Q2: What's a typical thermal resistance value?
A: Common values range from 0.1 K/W (excellent) to 5 K/W (poor), depending on heat sink design and airflow.

Q3: How do I find the heat dissipation value?
A: Check component specifications or measure power consumption (heat ≈ power for most electronics).

Q4: Does this include ambient temperature?
A: No, this calculates temperature rise above ambient. Add ambient temperature for absolute temperature.

Q5: What about forced vs natural convection?
A: The thermal resistance value should reflect your cooling conditions (manufacturers provide both values).