Overview
The 1N4148TR is a silicon switching diode produced by Central Semiconductor Corp. It belongs to the family of high conductance, fast-switching diodes, known for its reliability and widespread use in various electronic applications. This diode is a successor to the older 1N914 and has become a standard component in many circuits due to its dependable specifications and low cost.
Key Specifications
| Type | Value |
|---|---|
| Configuration | Single |
| Average Rectified Current-Max | 200 mA |
| Reverse Current-Max | 5 µA |
| Forward Voltage | 1 V at 10 mA |
| Reverse Voltage-Max [Vrrm] | 100 V |
| Reverse Recovery Time-Max | 4 ns |
| Power Dissipation | 500 mW |
| Diode Capacitance-Max | 4 pF |
| Average Forward Current-Max | 200 mA |
| Peak Current-Max | 4 A |
| Operating Temp Range | -55°C to +175°C |
| Package Style | DO-35 (SOD-27) |
| Mounting Method | Through Hole |
Key Features
- Fast Switching: The 1N4148TR has a reverse recovery time of approximately 4 ns, making it suitable for high-speed switching applications.
- Low Forward Voltage Drop: It exhibits a forward voltage drop of 1 V at 10 mA, which is ideal for small-signal applications where precise voltage control is crucial.
- High Peak Inverse Voltage: Rated at 100 V, providing substantial protection against reverse voltage conditions.
- Low Leakage Current: It has very low leakage current in reverse-bias mode, helping maintain signal integrity in circuits that require stable voltage levels.
- Compact Package: Available in a small DO-35 glass package, making it easy to use in compact designs or PCBs with limited space).
- Wide Temperature Range: Operates over an expansive temperature range of -55°C to +175°C, suitable for applications in environments prone to fluctuating temperatures).
Applications
- Signal Processing and Rectification: Excels in signal processing applications due to its fast switching characteristics and low forward voltage drop. It is used in rectification circuits to convert AC signals into DC current efficiently).
- Logic Gate Implementation: Used in digital circuits to implement logic gates, particularly diode-transistor logic (DTL) and diode-logic systems).
- Protection Circuits: Its excellent reliability makes it a smart choice for protection circuits, safeguarding sensitive components from voltage spikes and reverse current).
- Consumer Electronics: Used in home audio systems, mobile communication infrastructure, and other consumer electronics).
- Medical Electronics/Devices: Employed in medical devices due to its reliability and performance in a wide range of temperatures).
- Test and Measurement: Utilized in test and measurement equipment due to its fast switching and low leakage current characteristics).
Q & A
- What is the maximum reverse voltage rating of the 1N4148TR diode?
The 1N4148TR diode has a maximum repetitive reverse voltage (Vrrm) rating of 100 V). - What is the forward voltage drop of the 1N4148TR diode?
The forward voltage drop of the 1N4148TR diode is typically 1 V at 10 mA). - What is the reverse recovery time of the 1N4148TR diode?
The reverse recovery time of the 1N4148TR diode is approximately 4 ns). - What is the maximum power dissipation of the 1N4148TR diode?
The maximum power dissipation of the 1N4148TR diode is 500 mW). - What is the operating temperature range of the 1N4148TR diode?
The operating temperature range of the 1N4148TR diode is -55°C to +175°C). - In what package style is the 1N4148TR diode available?
The 1N4148TR diode is available in a DO-35 (SOD-27) package). - What are some common applications of the 1N4148TR diode?
The 1N4148TR diode is commonly used in signal processing, logic gate implementation, protection circuits, consumer electronics, medical electronics, and test and measurement equipment). - Why is the 1N4148TR diode preferred in high-frequency applications?
The 1N4148TR diode is preferred in high-frequency applications due to its fast switching characteristics and low reverse recovery time). - Is the 1N4148TR diode suitable for use in environments with fluctuating temperatures?
Yes, the 1N4148TR diode is suitable for use in environments with fluctuating temperatures due to its wide operating temperature range of -55°C to +175°C). - What is the maximum forward current rating of the 1N4148TR diode?
The maximum continuous forward current rating of the 1N4148TR diode is 200 mA, with a peak forward surge current capability of 4 A for short durations).
