26.5V RELAY DPDT high-performance, hermetically sealed military-grade electromagnetic crystal-can relay.The primary electrical function of this specialized component is to provide fast, low-loss physical circuit switching with high galvanic isolation under extreme mechanical and environmental stress.The internal configuration features a standard DPDT (Double-Pole, Double-Throw) contact arrangement, housing two independent switching channels inside a single low-profile metal frame.The mechanical framework relies on a specialized low-voltage DC activation coil designed to operate on a continuous, precision input voltage loop (typically 12V or 26.5V DC based on the matching -3B sub-code series).The external layout is built within a ruggedized, gold-plated or tin-plated half-size or full-size crystal-can metal housing equipped with 8 robust through-hole solder pins or side-mounting flanges to secure the unit against heavy chassis vibrations.Industry Equivalents (Cross-References)The TE Connectivity / CII 3SBC series (such as the 3SBC1514A2) serves as the exact modern active factory replacement family, representing the identical high-reliability manufacturing line after corporate acquisitions.The Struthers-Dunn 210 series functions as a universally adopted direct military cross-reference alternative, providing matching hermetic metal envelope dimensions and equivalent DPDT contact ratings.The Leach Corporation X2 series acts as an equivalent high-rel aerospace substitute, historically utilized to manage matching low-level instrumentation and power-switching balances.The Teledyne Relays 722 series serves as a secondary drop-in alternative, aligning directly with identical 0.100-inch grid terminal pin pitches used across structural defense communication backplanes.History of the ComponentThe lineage of this component belongs to Genicom Relays (originally part of the General Electric Waynesboro specialty relay facility), a prominent mid-to-late 20th-century defense subcontractor that later transitioned into Communication Instruments Inc. (CII), which was ultimately absorbed by TE Connectivity. Genicom established a dominant aerospace footprint by mastering the ultra-clean welding and glass-to-metal sealing techniques needed to pass strict military qualification testing.During the late Cold War and subsequent aviation modernization eras, standard commercial relays were entirely unusable because high altitude, zero atmospheric pressure, and extreme G-forces caused contacts to arc or physically seize. Genicom engineered the 950129 proprietary drawing family to satisfy the demanding requirements of avionics control pods, weapon deployment grids, and aerospace telemetry packages.Because these custom drawing numbers are assigned to explicit government contracts, parts like the 950129-3B are subjected to stringent MIL-R-39016 or MIL-R-5757 manufacturing screenings. While modern low-vibration applications utilize solid-state digital switches, original Genicom metal-can relays remain actively managed and sought after by independent aerospace distributors to maintain active legacy airframes worldwide.Actual Product Applications (Makes and Models)The Boeing F/A-18 Hornet Strike Fighters integrated these Genicom hermetic relays across their primary wing-root armament control channels to cleanly trigger external release solenoids without risking weapon misfires.The Raytheon Patriot Missile Defense Systems (AN/MPQ-53 Radar Racks) utilized these specific DPDT modules inside their localized power distribution cards to isolate sensitive logic sensors from raw external battery line fluctuations.The L3Harris AN/PRC-117 tactical manpack radio assemblies regularly employed these metal-can relays directly within their internal antenna tuning matrices to manage high-speed RF transmit/receive direction switching loops
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