1N2972B

Heavy-duty 10-Watt silicon Zener voltage regulator diode housed in a rugged hex stud-mount DO-4 package, engineered with a standard cathode-to-stud structure to lock a precise 8.2V stable reference threshold. Equivalents: ON Semiconductor 1N2972B, Microsemi 1N2972B, NTE5183A. Real-Life Examples: Industrial automated process control assemblies, municipal HVAC sequencing panels, and heavy facility material distribution enclosures.