1N4148 Switching Diode – Fast-Switching 100V Signal Diode
The 1N4148 is a fast-switching silicon signal diode designed for high-speed switching, signal steering, clipping, detection and general-purpose low-current electronic circuits. Its compact axial through-hole package makes it suitable for breadboard prototyping, PCB assembly, digital logic interfaces and repair work.
Applications
High-speed signal switching
Digital logic and signal steering
Waveform clipping and limiting
Signal detection and demodulation
Protection and isolation in low-current circuits
Timing and pulse circuits
Arduino, ESP32 and microcontroller projects
Electronics prototyping and educational projects
Polarity and Package
The painted band identifies the cathode (K). The opposite lead is the anode (A). The component is normally supplied in an axial through-hole package suitable for standard 2.54 mm-grid prototyping when leads are formed.
1N4148 vs 1N4007
The 1N4148 is intended primarily for fast, low-current signal switching, while the 1N4007 is a general-purpose rectifier intended for higher current and mains-frequency/low-frequency rectification. Choose the device according to voltage, current and switching-speed requirements.
Buy 1N4148 Diode Online in India
LearnElectronics India offers the 1N4148 for students, hobbyists, makers, repair technicians, prototyping and electronics laboratories in convenient single-piece and multiple-pack quantities.