Overview
The 1N4148 is a standard silicon switching signal diode produced by onsemi. It is one of the most popular and long-lived switching diodes due to its dependable specifications and low cost. This diode is widely used for converting alternating current (AC) to direct current (DC) and is particularly useful in high-speed switching applications up to about 100 MHz. The 1N4148 replaced the older 1N914 and can be used interchangeably with it, making it a versatile component in various electronic circuits.
Key Specifications
| Parameter | Value |
|---|---|
| Maximum Repetitive Reverse Voltage (VRRM) | 100 V |
| Average Rectified Forward Current (IO) | 200 mA |
| DC Forward Current (IF) | 300 mA |
| Peak Forward Surge Current (IFSM) | 4 A (1 μs pulse width) |
| Maximum Forward Voltage (VF) | 1 V at 10 mA |
| Reverse Breakdown Voltage | 75 V at 5 μA; 100 V at 100 μA |
| Reverse Recovery Time (trr) | 4 ns |
| Power Dissipation (PD) | 500 mW |
| Diode Capacitance | 4 pF |
| Operating Temperature Range | -55°C to +175°C |
| Package Style | DO-35 (SOD-27), Through Hole |
Key Features
- Fast-switching properties with a reverse recovery time of up to 4 ns, making it suitable for high-speed applications.
- Maximum repetitive reverse voltage of 100 V and average rectified forward current of 200 mA.
- Low forward voltage drop of 1 V at 10 mA.
- High-frequency capability, useful up to 100 MHz.
- Low intrinsic capacitance of 4 pF, beneficial for high-frequency circuits.
- Available in DO-35 (SOD-27) through-hole package.
Applications
- Automation systems.
- Broadband access equipment.
- Home audio system components.
- Mobile communication infrastructure.
- Test and measurement equipment.
Q & A
- What is the 1N4148 diode used for? The 1N4148 diode is used for converting alternating current (AC) to direct current (DC) and is particularly useful in high-speed switching applications.
- What is the maximum repetitive reverse voltage of the 1N4148 diode? The maximum repetitive reverse voltage is 100 V.
- What is the average rectified forward current of the 1N4148 diode? The average rectified forward current is 200 mA.
- What is the reverse recovery time of the 1N4148 diode? The reverse recovery time is up to 4 ns.
- What is the maximum forward voltage drop of the 1N4148 diode? The maximum forward voltage drop is 1 V at 10 mA.
- What is the operating temperature range of the 1N4148 diode? The operating temperature range is -55°C to +175°C.
- In what package styles is the 1N4148 diode available? The 1N4148 diode is available in DO-35 (SOD-27) through-hole package.
- What are some common applications of the 1N4148 diode? Common applications include automation systems, broadband access equipment, home audio system components, mobile communication infrastructure, and test and measurement equipment.
- Can the 1N4148 diode be used in high-frequency circuits? Yes, the 1N4148 diode is suitable for high-frequency circuits up to 100 MHz due to its low intrinsic capacitance.
- Is the 1N4148 diode interchangeable with the 1N914 diode? Yes, the 1N4148 and 1N914 diodes can be used interchangeably.
