1. Dynamic Clamping Characteristics and Energy Withstanding Capability: Both devices are rated for the same nominal peak pulse power of 600W. However, the BZW06-70 is tested under a 27A (8/20µs) condition, whereas the P6KE82A is characterized at 5.3A. The BZW06-70 can maintain a clamping voltage of 146V even when subjected to surge currents in the tens of amperes, demonstrating superior actual energy absorption capability. Although the P6KE82A has a lower specified clamping voltage (113V), this is valid only at its lower test current (5.3A). Under high-current transients, its residual voltage will rise significantly, potentially failing to provide an equivalent level of effective protection. This directly defines the different severity levels of their intended application environments. 2. Peak Pulse Current (Ipp): The Ipp rating of the BZW06-70 (27A) is substantially higher than that of the P6KE82A (5.3A). This indicates that the BZW06-70 is designed to handle higher-intensity transient overvoltage events, such as those from industrial inductive load switching or lightning-induced surges. In contrast, the P6KE82A is more suitable for lower-energy threats like electrostatic discharge (ESD) or minor voltage spikes. As Ipp is a core metric for assessing a TVS diode's surge withstand capability, this disparity is the primary factor that must be considered during substitution. 3. Application Focus and Standards Compliance: The P6KE82A is explicitly marked with "Power Line Protection: Yes," signifying its design compliance and suitability for AC power line surge protection standards (e.g., IEC 61000-4-5). The BZW06-70 lacks this designation, suggesting it may be a more general-purpose device not specifically optimized for power line applications. For use on power ports, the P6KE82A may offer advantages in terms of certification alignment and design margin. 4. Maximum Junction Temperature (Tj): The BZW06-70 has a Tj of 175°C, which is higher than the P6KE82A's 150°C. This gives the BZW06-70 a greater reliability margin in high-temperature environments or under conditions of higher self-heating, making it more suitable for harsher operating conditions or applications with poorer thermal management.