100 nF (0.1 µF), 50V

A 100nF (0.1µF) capacitor is a standard electronic component widely used for decoupling, smoothing, and noise-filtering in circuit boards. It is often marked with the code “104”.

Key Specifications & Types
Capacitance Value: 100 nF (also represented as 0.1 µF or with the code 104).
Voltage Rating: Commonly ranges from 10V to 630V, with 50V being the most common for general low-voltage microcontroller and Arduino projects.
Ceramic Capacitors (MLCC): Available in through-hole disc styles and Surface Mount (SMD) packages like 0402, 0603, and 1206.
Film/Box Capacitors: Preferred for audio or higher-voltage AC/DC applications requiring greater stability.

Common Uses
Decoupling: Placed as close as possible to the power supply pins of integrated circuits (ICs) and microcontrollers to absorb high-frequency noise and sudden voltage drops.
Low-Pass Filters: Used in combination with resistors to filter out unwanted high-frequency signals or electromagnetic interference (EMI).