1N458

High-voltage low-leakage silicon signal and general-purpose isolation diode housed in a glass axial DO-7 or DO-35 package, optimized for high-linearity voltage blocks. Equivalents: ON Semiconductor 1N458, Microsemi 1N458, NTE177. Real-Life Examples: Vintage high-voltage industrial instrumentation displays, scientific wave alignment testing decks, and legacy analog computing sub-stages.