When an inductive load is switched off, its stored energy must be handled by the circuit. Damage can recur if the original energy-management problem remains after a transistor replacement.

What to check next

Assess the load, suppression arrangement and switching behaviour together. Check whether previous repairs changed the component type or protection path. The useful result is an explanation of the repeated stress, not just confirmation that another output transistor has failed.

Useful information for an enquiry

Send the connected load details and the history of repeated module or component failures.

Do not remove suppression components or protection devices to obtain a different waveform. The circuit must retain its intended protective function.

Speak to AXION

For ECU testing and component-level repair, send your vehicle details and fault report. Workshop assessment is in Didcot, Oxfordshire. Suitable postal or remote work is confirmed before booking.

Technical background from Nexperia. The referenced design explains the principle; the vehicle-specific procedure determines the repair.