Overview
The Kemet M83421/01-0204P capacitor is a fixed metallized plastic film dielectric component designed for demanding industrial and consumer electronics applications. With a capacitance of 0.33µF and a rated voltage of 400V DC, this unit delivers stable performance across temperature ranges and operating conditions. This Kemet M83421/01-0204P offers reliable energy storage and filtering suitable for power supplies, audio equipment, and signal conditioning circuits.
Key Features
- Capacitance: 0.33µF ±10% tolerance
- Voltage Rating: 400V DC
- Metallized polycarbonate/polyester film dielectric for stability
- Hermetically sealed metal or ceramic case construction
- Military-grade specification (M83421 series)
- Axial lead configuration for through-hole mounting
Technical Specifications
- Capacitance: 0.33µF
- Voltage Rating: 400V DC
- Tolerance: ±10%
- Dielectric: Metallized plastic film
- Case Style: Axial cylindrical
- Termination: Axial leads
- Insulation Resistance: High (spec-dependent on operating conditions)
- Temperature Range: Typically -55°C to +125°C
Typical Applications
- Power supply filtering and decoupling
- Audio and RF coupling circuits
- Signal conditioning and timing applications
- Industrial electronics and control systems
- Aerospace and defense equipment (per military standard qualification)
- Retrofit and replacement in vintage tube amplifiers and vintage electronics
Compatibility & Replacements
Compatible With
- Through-hole PCB layouts and breadboards
- Audio equipment and amplifier designs
- Industrial power conversion circuits
- Signal processing and filter networks
- Military and aerospace equipment using M83421-series specs
Replaces / Drop-In Replacement For
- Kemet M83421/01-0204P (exact part)
- Equivalent 0.33µF 400V film capacitors from Sprague, Mullard, Aerovox, and other manufacturers meeting the same tolerance and voltage rating
- Common vintage replacements in audio restoration projects
Works With
- Standard electronic schematic designs specifying 0.33µF 400V capacitors
- PCB assembly processes (wave solder, hand solder, reflow)
- Military MIL-PRF-20 and MIL-STD-202 testing environments
- Vintage tube equipment restoration and repair specifications












