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TVA1316-E3 – Vishay ATOM® 1000 µF 50V Electrolytic Capacitor
Available now on the Airparts.aero Marketplace.
Overview
The Vishay TVA1316-E3 is a high-performance, axial-leaded aluminum electrolytic capacitor from the renowned ATOM® series. This is a board-level electronic component engineered for long life and high reliability in the power supply sections of aerospace electronics and avionics. With a high capacitance of 1000 µF and a 50 VDC rating, its primary function is power supply filtering—smoothing rectified AC into the clean, stable DC voltage required by sensitive electronic systems. It also serves as a local energy reservoir, providing instantaneous current to handle transient loads.
The ATOM® series is specifically designed for demanding applications, featuring a very high ripple current capability and a long operational life rating (thousands of hours at maximum temperature and voltage). The construction is housed in a sealed aluminum can with rigid PC pin terminals for secure through-hole mounting on a printed circuit board (PCB). For any repair or overhaul of an aerospace power supply or electronic controller, the Vishay TVA1316-E3 is a premier component, offering the certified performance and reliability required for airworthy systems.
Key Features
Genuine Vishay ATOM® Series: A proven, high-performance capacitor from a world leader in electronic components, trusted in aerospace and defense applications.
High Capacitance for Filtering: The 1000 microfarad capacitance provides exceptional smoothing of DC voltage rails, reducing noise and ripple.
High Ripple Current Capability: Engineered to handle the high charge/discharge currents inherent in switching and linear power supplies without overheating or degradation.
Long Established Life: Designed and tested for a very long operational life under demanding temperature and voltage conditions, ensuring system reliability.
PC Pin for Secure Mounting: The rigid, printed circuit pin terminals provide a robust and vibration-resistant solder connection to the PCB.
Polarized Component: Features clear polarity markings to ensure correct and safe installation in a DC circuit.
Technical Specifications
Part Number: TVA1316-E3
Component Type: Aluminum Electrolytic Capacitor, Axial Lead, PC Pin
OEM Manufacturer: Vishay Sprague
Product Line: ATOM®, TVA Series
Capacitance: 1000 µF
Voltage Rating: 50 VDC
Tolerance: -10 %, +75 % (standard for bulk filter capacitors)
Operating Temperature Range: -40°C to +85°C
Termination Style: PC Pin / Radial Leads
System Compatibility
This is a board-level component used in a vast range of aerospace electronic Line Replaceable Units (LRUs). It is not specific to one aircraft but is found in systems across all categories of aviation where a high-reliability filter capacitor is required. Typical systems include:
Avionics Power Supplies: (e.g., in NAV/COM radios, GPS units, flight management systems, displays)
Power Distribution & Control Units
Actuator Electronic Controllers (e.g., for flaps, trim, landing gear)
Lighting System Power Ballasts
Engine Control Units (FADEC)
Note: The correct capacitor value and voltage rating for any circuit location must be verified against the Component Maintenance Manual (CMM) or the LRU's official engineering schematic.
Applications
Power Supply Filtering: The primary application is as an input or output filter capacitor in a linear or switching power supply, smoothing the DC voltage and suppressing ripple.
Bulk Energy Storage: Acts as a local energy reservoir on a PCB, providing high instantaneous current for transient loads.
Decoupling: Used to decouple low-frequency noise from DC power rails.
Why Choose TVA1316-E3?
The failure of a single filter capacitor can bring down an entire multi-thousand-dollar avionics unit. The Vishay ATOM® TVA1316-E3 is an aerospace-grade component with proven reliability. Unlike a generic commercial capacitor, it is designed and manufactured with a high-purity etched foil, a stable electrolyte, and a ruggedized housing to withstand the temperature cycles, vibration, and high ripple currents found in aircraft systems. Choosing a high-quality, long-life capacitor like the TVA1316-E3 is a critical investment in the long-term reliability and airworthiness of any electronic repair.
The long-term reliability of the TVA1316-E3 electrolytic capacitor is rooted in the electrochemistry of its self-healing dielectric. The dielectric is an incredibly thin layer of aluminum oxide (Al2O3) that is electrochemically grown on the surface of the micro-etched anode foil. The thickness of this layer, which determines the capacitor's voltage rating, is only a few nanometers. The liquid electrolyte serves as the true cathode, making intimate contact with the dielectric's vast surface area. If a microscopic flaw in the oxide layer or a momentary voltage surge causes a tiny leakage current to flow, this current triggers an immediate electrochemical reaction. The electrolyte donates oxygen to the bare aluminum at the site of the flaw, instantly re-forming the insulating aluminum oxide layer and "healing" the breach. This continuous, active self-healing mechanism is what gives high-quality electrolytic capacitors their robust nature and long-term stability in demanding power supply applications.
Note: The TVA1316-E3 is a polar electronic component. It must be installed with the correct positive and negative terminal orientation as marked on the case. Reversing the polarity will cause a catastrophic short circuit, leading to the rapid failure and potential rupture of the capacitor. Installation must be performed by a qualified avionics or electronics technician using proper ESD (electrostatic discharge) precautions and soldering techniques in accordance with the Component Maintenance Manual (CMM).
Documentation
Vishay Website: The official technical datasheet for the Vishay ATOM® TVA series, containing all detailed performance specifications, dimensions, and life test data, is publicly available for download from the Vishay Sprague website.
