Overview
The Sprague 118P20554S4 is a metallized paper capacitor engineered for high-reliability applications in legacy industrial and electronic equipment. Rated at 2µF capacitance and 400VDC maximum operating voltage, this axial-lead component delivers stable performance across a wide range of environmental conditions. Its proven construction makes it a preferred choice for form-fit-function replacements in vintage amplifiers, power supplies, motor drives, and test instrumentation.
Key Features
- Capacitance: 2µF (±10% tolerance typical for this series)
- Rated voltage: 400VDC continuous operation
- Metallized polyester/paper film construction for low leakage and high stability
- Axial lead termination for through-hole PCB mounting
- Compact form factor suitable for confined spaces in legacy equipment
- RoHS-compliant legacy stock with proven field reliability
Technical Specifications
This capacitor meets historical Sprague specifications and is compatible with equipment designed before the 1992 Vishay acquisition. Typical applications include DC filtering, coupling, and high-voltage storage circuits where stable, long-life performance is essential.
Typical Applications
- Industrial motor drives and soft starters (DC bus filtering)
- Tube amplifier and vintage receiver restoration
- Uninterruptible power supply (UPS) circuits
- Legacy test equipment and measurement instruments
- Audio frequency coupling and blocking stages
- High-voltage DC power supply filtering
Compatibility & Replacements
Compatible With
- Legacy Sprague circuit designs (pre-1992 equipment)
- Industrial systems requiring 400VDC film capacitors
- Vintage audio amplifiers and receivers
- Industrial control systems and motor soft starters
- High-voltage DC power supply circuits
Replaces / Drop-In Replacement For
The 118P20554S4 is a direct replacement for original Sprague 118P series 2µF 400VDC specifications in legacy equipment. Verify mechanical fit and electrical specifications with your system integrator before ordering to ensure compatibility with your specific application.
Works With
- PCB-mounted through-hole designs with 0.3″ to 0.4″ lead spacing
- High-voltage DC circuits requiring film dielectric stability
- Industrial and marine equipment designed for 400VDC operation
- Vintage tube and solid-state audio systems
