Overview
The Cornell Dubilier TNAD1040 is a vintage aluminum electrolytic capacitor designed for industrial and commercial electronic applications. With a capacitance rating of 4µF and maximum operating voltage of 100VDC, this unit delivers the stable filtering and energy storage performance required in legacy equipment, vintage audio amplifiers, test instruments, and power supply circuits. Cornell Dubilier is known for providing a wide range of capacitor solutions, and this TNAD series represents their proven reliability in aluminum electrolytic technology.
Key Features
- Capacitance: 4µF (4 microfarads)
- Voltage rating: 100VDC maximum operating voltage
- Aluminum electrolytic construction for stable performance
- Compact single-unit package ideal for space-constrained designs
- Suitable for power supply filtering, audio coupling, and timing circuits
- Vintage specification ensures compatibility with legacy circuit designs
Technical Specifications
The TNAD1040 meets the needs of technicians restoring or maintaining vintage audio equipment, test instruments, and industrial control circuits. Its aluminum electrolytic construction provides reliable capacitance stability and low equivalent series resistance (ESR) suitable for DC filtering applications.
Typical Applications
- Vintage vacuum tube and transistor audio amplifier restoration
- Power supply filtering in legacy industrial control systems
- Energy storage in test equipment and measurement instruments
- AC coupling and timing circuits in vintage electronic devices
- Equipment refurbishment and repair requiring period-correct components
Compatibility & Replacements
Compatible With
- Vintage audio amplifiers and pre-amplifiers rated for 100VDC or lower
- Legacy power supply circuits using electrolytic filter banks
- Industrial test instruments from the 1970s–1990s era
- Any application requiring a 4µF, 100VDC capacitor footprint
Replaces / Drop-In Replacement For
The TNAD1040 directly replaces other 4µF 100VDC aluminum electrolytic capacitors with compatible pin spacing and physical dimensions. Verify mounting dimensions and terminal type before installation to ensure proper fit in your circuit board or chassis.
Works With
- Vintage tube amplifier restoration kits
- Legacy industrial automation and control equipment
- Analog audio circuitry and signal conditioning stages
- Power conversion and filtering applications rated 100VDC or lower
