Its 26.7 V minimum breakdown voltage means it starts conducting before the line sees damaging overvoltage, and the 38.9 V maximum clamping voltage at 38.6 A peak pulse current keeps the protected circuitry safe during a surge. The wide operating temperature range from -65°C to 150°C means it can sit in outdoor cabinets or near hot power supplies without derating headaches.
Key ratings for the BOM engineer
The 24 V reverse standoff voltage is the maximum continuous DC voltage the diode will not conduct — your rail should stay below this. The 26.7 V min breakdown gives a 2.7 V guard band before clamping starts, which is tight enough for regulated 24 V supplies but leaves margin for normal ripple. Peak pulse current is rated at 38.6 A for a 10/1000 µs waveform. That is the surge the part can absorb once; for repetitive events, derate per the datasheet pulse derating curve. The 1.5 kW peak pulse power is the headline number buyers use to compare TVS diodes — this sits in the standard 1500 W class common for industrial protection.