To ensure device reliability, the TVS1801 is characterized against 5000 repetitive pulses of 25-A IEC 61000-4-5 8/20-µs surge pulses at 125°C. The test is performed with less than 10 seconds between each pulse at high temperature to simulate worst-case scenarios for fault regulation. After each surge pulse, the TVS1801 clamping voltage, breakdown voltage, and leakage are recorded to ensure that there is no variation or performance degradation. By ensuring robust, reliable, high temperature protection, the TVS1801 enables fault protection in applications that must withstand years of continuous operation with no performance change.