Overview
The 1N4148T-77 is a small signal diode produced by Rohm Semiconductor. This diode is part of the 1N4148 series, known for its fast switching capabilities and low reverse leakage current. It is designed for general-purpose applications requiring high-speed switching and minimal power loss.
The 1N4148T-77 is electrically equivalent to the 1N914 diode and features a silicon epitaxial planar construction. It is widely used in various electronic circuits due to its reliable performance and robust specifications.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Diode Configuration | Single | |
| Repetitive Reverse Voltage (Vrrm) Max | 100V | |
| Forward Current (If(AV)) | 200mA | |
| Forward Voltage (Vf) Max @ If | 1V @ 10mA | |
| Reverse Recovery Time (trr) Max | 4ns | |
| Forward Surge Current (Ifsm) Max | 4A (tp = 1µs), 1A (tp = 1s) | |
| Operating Junction Temperature Max | 175°C | |
| Operating Temperature Range | -65°C to +175°C | |
| Power Dissipation (Ptot) Max | 500mW | |
| Package / Case | DO-204AH, DO-35, Axial | |
| No. of Pins | 2Pins | |
| Mounting Type | Through Hole |
Key Features
- Fast Switching Capability: The 1N4148T-77 features a fast reverse recovery time of 4ns, making it suitable for high-speed switching applications.
- Low Reverse Leakage Current: It has a low reverse leakage current of 5µA at 75V, ensuring minimal power loss and heat generation.
- High Forward Surge Current: The diode can handle a forward surge current of up to 4A for a pulse width of 1µs and 1A for a pulse width of 1s.
- Robust Operating Temperature Range: It operates within a temperature range of -65°C to +175°C, making it reliable in various environmental conditions.
- Compact Packaging: Available in DO-204AH, DO-35, and axial packages, making it versatile for different circuit designs.
Applications
- High-Speed Switching Circuits: Ideal for applications requiring fast switching times, such as in digital circuits and high-frequency signal processing.
- General-Purpose Rectification: Suitable for general-purpose rectification in power supplies, signal processing, and other electronic circuits.
- Audio and Video Equipment: Used in audio and video equipment for signal rectification and protection.
- Automotive Electronics: Can be used in automotive electronics for various signal processing and protection tasks.
Q & A
- What is the maximum repetitive reverse voltage of the 1N4148T-77 diode?
The maximum repetitive reverse voltage (Vrrm) is 100V.
- What is the forward current rating of the 1N4148T-77 diode?
The forward current (If(AV)) is rated at 200mA.
- What is the reverse recovery time of the 1N4148T-77 diode?
The reverse recovery time (trr) is 4ns.
- What is the maximum operating junction temperature of the 1N4148T-77 diode?
The maximum operating junction temperature is 175°C.
- What are the common package types for the 1N4148T-77 diode?
The diode is available in DO-204AH, DO-35, and axial packages.
- What is the power dissipation rating of the 1N4148T-77 diode?
The power dissipation (Ptot) is rated at 500mW.
- Is the 1N4148T-77 diode suitable for high-speed switching applications?
Yes, it is suitable due to its fast reverse recovery time of 4ns.
- What is the forward surge current rating of the 1N4148T-77 diode?
The forward surge current (Ifsm) is rated at 4A for a pulse width of 1µs and 1A for a pulse width of 1s.
- What is the typical forward voltage of the 1N4148T-77 diode at 10mA?
The typical forward voltage (Vf) at 10mA is 1V.
- Is the 1N4148T-77 diode RoHS compliant?
Yes, the 1N4148T-77 diode is RoHS compliant.
