Choosing a replacement transistor solely because its resistance is lower can overlook other requirements. Switching behaviour, operating limits and heat handling all affect whether it suits the circuit.

Interpreting the evidence

A component-level repair should identify the original device and compare the relevant specifications, including the conditions under which they are quoted. The surrounding driver and load need assessment as well. A physically matching package does not establish electrical equivalence.

Keep this evidence

Send a clear module label and any details of a previous transistor replacement.

Substitution needs engineering evidence. A successful brief power-up is not enough to validate a replacement in the vehicle’s full operating range.

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.