## Course Edit

This page is for the course ELEC3106 - Electronics and is based on the lectures of Torsten Lehman

## Overview Edit

## Prerequisites Edit

A basic understanding of circuit theory and heat flow is assumed throught this page. These topics are covered in ELEC1111, ELEC2134 and PHYS1231

## Thermal Management Edit

### Purpose Edit

### Electrical Model of Heat Transfer Edit

A simple application of an analogue to Ohm's law can be employed on a heat sink attached to a transistor. This is given by

- $ T_j=P_D\cdot R_{\theta}+T_A $

where $ T_j $ is the maximum transistor junction temperature in units of degrees Celsius; $ P_D $ is the power dissipated in units of watts; $ R_{\theta} $ is the thermal resistance of the heat sink in units of degrees Celsius per watt; and $ T_A $ is the ambient temperature in units of degrees Celsius.

### Practical Aspects of Mounting Heat Sinks Edit

### Safe Operating Areas (SOA) Edit

## Further Reading Edit

It is recommended that the reader visits https://subjects.ee.unsw.edu.au/elec3106/ and reads the lecturers scribbles as an alternative source.