What are the causes of ECU damage?
1 Answers
Semiconductor devices such as chips (excluding resistors and capacitors), diodes, transistors, and field-effect transistors may be damaged due to the following reasons: manufacturing defects, end-of-life failure, or voltage breakdown. Below is a detailed introduction to the causes of ECU damage: 1. Manufacturing defects: Issues may manifest within a short period of use, but given the current manufacturing standards of semiconductor components, this probability is extremely low. 2. End-of-life failure: It is common knowledge that the lifespan of electronic components decreases significantly as temperature rises, even within the normal operating range. When temperatures exceed the normal operating range, some components, such as MOS transistors, experience increased internal resistance, leading to higher temperatures and creating a vicious cycle. 3. Voltage breakdown: All electronic components have a specific operating voltage range and a tolerance for breakdown voltage. When the voltage exceeds a certain threshold, previously non-conductive parts of the component may become conductive. High voltage in the ECU's internal circuits typically originates externally, entering through wiring harness connectors. A well-designed ECU includes protective measures against such hazards, featuring overvoltage protection circuits. Circuits lacking such designs are rarely practical for use.
