A485

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High-Vacuum Thermionic Diode Detector Tube, Ground Glass Envelope Outer Housing Shell, Standard 7-Pin Miniature Component Base B7G Pin Layout, High Efficiency Thermionic Electron E mission Cathode Array, Low Internal Space Charge Inter-Electrode Capacitance, Precise Small-Signal Audio Detector and High-Frequency RF Discrimination, High Temperature Hermetically Sealed Inner Chamber Matrix, Vintage Communications and Instrumentation Interface Routing Link | Vintage instrumentation and early communications-grade thermionic high-vacuum diode detector vacuum tube manufactured by Amperex Electronic Corporation under foundational registration code A485 (universally logged across tube master registries as the industrial 485 profile). Engineered specifically to manage high-precision visible or radio frequency signal detection passes without current loading or tracking delays, this miniature tube extracts clean analog envelopes from complex incoming carrier loops, completely shielding adjacent instrumentation stages from localized distortion drift. Widely encountered inside classic laboratory calibration instrumentation panels, vintage telecommunication cards, and aerospace telemetry front-ends. | Industry Exact Equivalents: Amperex A485, Amperex 485, Philips 485 Tube | Industry Functional Cross-References: European Specialized Detector Tubes, Telefunken Vacuum Components, Mullard Signal Diodes, Standard 7-Pin Vacuum Diodes | Military Specification National Stock Number (NSN): 5960-00-112-9210 (Base Miniature Thermionic Signal Diode Tube Matrix) Show more