ISO 7637-3

ISO 7637-3

ISO 7637-3 applies to road vehicles fitted with nominal 12 V or 24 V electrical systems. Rent, buy or lease ISO 7637-3 Test Pulse Generators for Electrical Transient Testing on Road Vehicles. The EMC Shop specializes in automotive compliance testing.


ISO 7637-3 defines test methods to evaluate the immunity of devices under test (DUTs) to transient pulses coupled to lines other than supply lines. The test pulses simulate both fast and slow transient disturbances caused by the switching of inductive loads and relay contact bounce.


For transient pulses immunity, Annex B provides recommended test severity levels in line with the functional performance status classification (FPSC) principle described in ISO 7637‑1.

ISO 7637-3 Test Methods

  • Capacitive coupling clamp (CCC) method
  • Direct capacitive coupling (DCC) method
  • Inductive coupling clamp (ICC) method

ISO 7637-3 CCC Test Setup

ISO 7637-3 CCC Capacitive Coupling Clamp Test Setup

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