CG0104 100nF (0.1µF) 4mm Greencap Capacitor

The 100nF 4mm Greencap Capacitor is a compact polyester film capacitor commonly used for decoupling, noise filtering, signal coupling, bypassing, and general-purpose electronic applications. Also known as a 0.1µF capacitor, this is one of the most commonly used capacitance values in electronics. Its non-polarised construction allows it to be installed in either direction, making it easy to use in electronic kits, breadboard experiments, PCB assembly, repairs, prototyping, and classroom electronics projects.

Key Features

• 100nF capacitance
• Equivalent to 0.1µF or 100,000pF
• Polyester film construction
• Compact 4mm Greencap style
• Non-polarised for easy installation
• Suitable for decoupling and bypass applications
• Useful for noise filtering and signal coupling
• Through-hole construction for PCB assembly

What’s Included

• 1 × 100nF 4mm Greencap Capacitor

Understanding the Capacitor Value

The capacitance can be expressed in several equivalent ways:
• 100nF
• 0.1µF
• 100,000pF
The common three-digit capacitor marking for this value is 104. The first two digits represent 10 and the third digit indicates four additional zeros when expressed in picofarads, giving 100,000pF, 100nF or 0.1µF.

What is a Greencap Capacitor?

Greencap is a commonly used name for this style of polyester film capacitor. Polyester film capacitors provide reliable general-purpose performance and are widely used where stable capacitance and non-polarised operation are required.
Unlike electrolytic and tantalum capacitors, Greencap capacitors have no positive or negative lead, so they can be installed in either direction.

Common Applications

• Power supply decoupling
• Noise filtering
• Signal coupling
• Bypass circuits
• Timing circuits
• Oscillator circuits
• Audio and signal processing
• General electronic circuit construction

Classroom Use / Learning Outcomes

Students can use this capacitor to:
• Identify polyester film capacitors
• Understand the 104 capacitor marking
• Convert between µF, nF and pF
• Compare film, ceramic and electrolytic capacitors
• Investigate filtering and decoupling circuits
• Learn the difference between polarised and non-polarised capacitors
• Practise breadboard construction and PCB soldering

Teacher Benefits

• Very common capacitor value for electronics projects
• Non-polarised design reduces student assembly errors
• Suitable for breadboard and PCB activities
• Excellent for teaching capacitor identification
• Useful for demonstrating decoupling and filtering
• Suitable for a wide variety of student electronic projects

Perfect For

• Electronic kits
• Power supply circuits
• Audio circuits
• Breadboard experiments
• PCB assembly
• Timing and oscillator circuits
• Filtering and noise suppression
• Classroom electronics