1N4148 Small Signal Fast Switching Diode
The 1N4148 Small Signal Fast Switching Diode is one of the most popular high-speed switching diodes used in electronic circuits, Arduino projects, Raspberry Pi applications, ESP32 development, communication systems, and PCB designs. It is designed for fast signal switching with an ultra-fast recovery time, making it an ideal choice for digital logic circuits, pulse circuits, switching regulators, and protection applications.
The 1N4148 features low capacitance, low leakage current, and excellent switching performance, making it a preferred component among students, engineers, hobbyists, and electronics professionals in Bangladesh.
Whether you are building automation systems, repairing electronic devices, designing PCB circuits, or learning electronics, the 1N4148 diode provides reliable performance, long operating life, and excellent efficiency.
It is widely used in:
- Arduino Projects
- Raspberry Pi Circuits
- ESP8266 & ESP32 Projects
- Digital Logic Circuits
- High-Speed Signal Switching
- Communication Equipment
- Oscillator Circuits
- Clamping Circuits
- Protection Circuits
- PCB Design Projects
- Electronics Laboratory Experiments
- Educational Engineering Projects
Its compact size, low cost, and dependable performance make the 1N4148 Fast Switching Diode an essential component for every electronics toolkit.
Features:
- Ultra-fast switching diode
- Small signal silicon diode
- Very low reverse recovery time
- High reliability
- Low leakage current
- Low junction capacitance
- Compact DO-35 package
- Excellent for digital electronics
- Suitable for Arduino and Raspberry Pi
- Ideal for PCB design and prototyping
- Long service life
- Industry-standard component
Specifications:
| Specification | Value |
|---|---|
| Product Name | 1N4148 Small Signal Fast Switching Diode |
| Diode Type | Silicon Switching Diode |
| Package | DO-35 Axial |
| Maximum Repetitive Reverse Voltage (VRRM) | 100V |
| Average Forward Current (IF) | 150mA |
| Peak Forward Surge Current | 500mA |
| Forward Voltage (VF) | Approximately 1V |
| Reverse Recovery Time | Approximately 4ns |
| Reverse Leakage Current | Very Low |
| Operating Temperature | -65°C to +175°C |
| Mounting Type | Through Hole |
| Polarity | Cathode marked with black band |
Applications:
- Arduino Projects
- Raspberry Pi Projects
- ESP32 Development
- ESP8266 Circuits
- Digital Electronics
- Logic Gate Circuits
- Pulse Generator
- Communication Circuits
- Power Supply Protection
- Signal Clipping
- Signal Clamping
- Switching Circuits
- Sensor Interfaces
- Educational Electronics Labs
- DIY Electronics Projects
- PCB Prototype Development
Why Choose the 1N4148 Diode?
The 1N4148 is one of the most trusted switching diodes because it combines:
- Fast switching speed
- Excellent reliability
- Low power loss
- Affordable price
- Wide compatibility
- Easy PCB mounting
- Ideal for both beginners and professionals
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