Overview
The 1N4148WS-HE3-18 is a small signal fast switching diode produced by Vishay General Semiconductor - Diodes Division. This diode is part of the 1N4148 series, known for its high performance and reliability in various electronic applications. It is designed to handle fast switching operations with minimal reverse recovery time, making it an excellent choice for rectification, polarity protection, and signal switching.
Key Specifications
| Parameter | Test Condition | Symbol | Value | Unit |
|---|---|---|---|---|
| Reverse Voltage | Tamb = 25 °C | VR | 75 | V |
| Repetitive Peak Reverse Voltage | Tamb = 25 °C | VRRM | 100 | V |
| Average Rectified Current | Half wave rectification with resistive load, f ≥ 50 Hz | IF(AV) | 150 | mA |
| Forward Voltage | IF = 10 mA | VF | 1 | V |
| Forward Voltage | IF = 100 mA | VF | 1.2 | V |
| Leakage Current | VR = 75 V | IR | 5 μA | |
| Surge Forward Current | t < 1 s, Tj = 25 °C | IFSM | 350 | mA |
| Power Dissipation | Ptot | 200 | mW | |
| Thermal Resistance Junction to Ambient Air | RthJA | 650 | K/W | |
| Junction Temperature | Tj | 150 | °C | |
| Storage Temperature Range | Tstg | -65 to +150 | °C | |
| Operating Temperature Range | Top | -55 to +150 | °C | |
| Reverse Recovery Time | IF = 10 mA, iR = 1 mA, VR = 6 V, RL = 100 Ω | trr | 4 ns | |
| Diode Case Style | SOD-323 |
Key Features
- Fast Switching Capability: The 1N4148WS-HE3-18 features a fast switching time with a reverse recovery time (trr) of ≤ 4 ns, making it suitable for high-speed applications.
- Low Forward Voltage: It has a low forward voltage drop (VF) of 1 V at 10 mA and 1.2 V at 100 mA, which reduces power losses.
- High Reliability: The diode is AEC-Q101 qualified, ensuring it meets stringent automotive standards for reliability and performance.
- Compact Package: The SOD-323 package is compact and suitable for surface-mount technology (SMT), making it ideal for space-constrained designs.
- High Temperature Range: The diode operates over a wide temperature range from -55 °C to +150 °C, making it versatile for various environmental conditions.
- Low Leakage Current: It has a low leakage current (IR) of 5 μA at 75 V, which is beneficial for power-saving designs.
Applications
The 1N4148WS-HE3-18 is widely used in various applications due to its fast switching and reliable performance. Some common applications include:
- Rectification and Polarity Protection: In power supplies, voltage regulators, and other DC-DC conversion circuits.
- Signal Switching: In audio and video circuits, logic gates, and other signal processing applications.
- Automotive Systems: Given its AEC-Q101 qualification, it is suitable for use in automotive electronics such as infotainment systems, safety systems, and more.
- Industrial and Consumer Electronics: In control circuits, sensor interfaces, and other general-purpose electronic devices.
Q & A
- What is the maximum reverse voltage of the 1N4148WS-HE3-18 diode?
The maximum reverse voltage (VR) is 75 V, and the repetitive peak reverse voltage (VRRM) is 100 V. - What is the forward current rating of the 1N4148WS-HE3-18?
The average rectified current (IF(AV)) is 150 mA. - What is the forward voltage drop of the 1N4148WS-HE3-18?
The forward voltage (VF) is 1 V at 10 mA and 1.2 V at 100 mA. - What is the reverse recovery time of the 1N4148WS-HE3-18?
The reverse recovery time (trr) is ≤ 4 ns. - What is the operating temperature range of the 1N4148WS-HE3-18?
The operating temperature range is from -55 °C to +150 °C. - Is the 1N4148WS-HE3-18 AEC-Q101 qualified?
Yes, it is AEC-Q101 qualified, making it suitable for automotive applications. - What is the package type of the 1N4148WS-HE3-18?
The diode is packaged in a SOD-323 case. - What is the thermal resistance junction to ambient air of the 1N4148WS-HE3-18?
The thermal resistance junction to ambient air (RthJA) is 650 K/W. - What is the storage temperature range of the 1N4148WS-HE3-18?
The storage temperature range is from -65 °C to +150 °C. - What are some common applications of the 1N4148WS-HE3-18?
Common applications include rectification, polarity protection, signal switching, automotive systems, and industrial/consumer electronics.
