The 1N4148 is a widely used general-purpose small-signal diode manufactured by ON Semiconductor. Here is a detailed introduction to the 1N4148 diode:
1. Overview:
- Manufacturer: ON Semiconductor
- Part Number: 1N4148
- Type: General Purpose Small-Signal Diode
- Package: DO-35 (Glass Axial Package)
2. Key Specifications:
- Voltage Rating: 100V
- Current Rating: 200mA
- Max repetitive peak reverse voltage (VRRM): 100V
- Forward Voltage Drop (VF): Around 0.7V at low currents
- Reverse Recovery Time (trr): Very fast recovery time
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DataSheet
3. Features and Applications:
- General Purpose: The 1N4148 is a versatile small-signal diode suitable for a wide range of general-purpose applications.
- Fast Switching: Known for its fast switching speed, making it ideal for high-frequency applications.
- Low Forward Voltage Drop: The diode has a low forward voltage drop, making it efficient for power conversion in various circuits.
- Signal Diode: Commonly used for signal rectification in electronic circuits.
- Protection Diode: Provides reverse polarity protection in circuits.
- Small Signal Handling: Ideal for handling small currents and voltages in electronic circuits.
- High-Speed Applications: Suitable for use in high-speed and low-power circuits due to its fast recovery time.
4. Package Information:
- DO-35 Package: The DO-35 is a glass axial package, which is a cylindrical package with axial leads for through-hole mounting.
5. Applications:
- Rectification: Converting alternating current (AC) to direct current (DC) signals.
- Signal Demodulation: Extracting information from modulated signals.
- Switching Circuits: Due to its fast recovery time and switching characteristics.
- Voltage Clamping: Protecting circuits from voltage spikes.
- Signal Conditioning: Filtering and processing signals in various electronic systems.
6. Advantages:
- Reliable Performance: Known for reliable performance in various applications.
- Versatile: Fits well into a wide range of circuit designs.
- Widely Available: Being a standard component, the 1N4148 is readily available and cost-effective for many applications.
The 1N4148 diode from ON Semiconductor is a fundamental component in electronics due to its reliable performance, fast switching characteristics, and wide range of applications in signal processing, rectification, and protection circuits, among others.
