Overview
The 1.5SMC18AT3G is a Transient Voltage Suppressor (TVS) diode manufactured by Littelfuse Inc. This component is designed to protect voltage-sensitive components from high voltage, high energy transients. It is part of the 1.5SMCxxAT3G series, which is known for its excellent clamping capability, high surge capability, low zener impedance, and fast response time.
Key Specifications
| Parameter | Symbol | Value | Unit |
|---|---|---|---|
| Working Peak Reverse Voltage | VRWM | 15.3 V | V |
| Breakdown Voltage | VBR | 17.1 - 18.9 V | V |
| Peak Power Dissipation @ 1 ms | PPK | 1500 W | W |
| Maximum Reverse Leakage Current @ VRWM | IR @ VRWM | 5 µA | µA |
| Clamping Voltage @ Peak Pulse Current | VC @ IPP | 25.2 V | V |
| Forward Surge Current @ TA = 25°C | IFSM | 200 A | A |
| Operating and Storage Temperature Range | TJ, Tstg | -65 to +150 °C | °C |
| ESD Rating | - | Class 3 (> 16 kV) per Human Body Model | - |
Key Features
- Excellent clamping capability to protect against high voltage transients.
- High surge capability with a peak power dissipation of 1500 W @ 1 ms.
- Low zener impedance for effective transient voltage suppression.
- Fast response time, typically less than 1 ns.
- Pb-free packages available, making it suitable for RoHS-compliant applications.
- ESD rating of Class 3 (> 16 kV) per Human Body Model.
- Low leakage current of less than 5 µA above 10 V.
Applications
The 1.5SMC18AT3G TVS diode is ideally suited for various industrial and consumer applications, including:
- Communication systems
- Automotive systems
- Process control systems
- Medical equipment
- Business machines
- Power supplies
- Numerical controls
Q & A
- What is the primary function of the 1.5SMC18AT3G TVS diode?
The primary function is to protect voltage-sensitive components from high voltage, high energy transients.
- What is the working peak reverse voltage range for the 1.5SMC18AT3G?
The working peak reverse voltage is 15.3 V.
- What is the peak power dissipation of the 1.5SMC18AT3G?
The peak power dissipation is 1500 W @ 1 ms.
- What is the maximum forward surge current for the 1.5SMC18AT3G?
The maximum forward surge current is 200 A @ TA = 25°C.
- What is the operating and storage temperature range for the 1.5SMC18AT3G?
The operating and storage temperature range is -65 to +150 °C.
- Does the 1.5SMC18AT3G have any ESD protection rating?
Yes, it has an ESD rating of Class 3 (> 16 kV) per Human Body Model.
- What type of package is the 1.5SMC18AT3G available in?
The 1.5SMC18AT3G is available in the SMC package, which is Pb-free and suitable for small form factor requirements.
- In which applications is the 1.5SMC18AT3G commonly used?
It is commonly used in communication systems, automotive, process control, medical equipment, and other industrial and consumer applications.
- What is the response time of the 1.5SMC18AT3G TVS diode?
The response time is typically less than 1 ns.
- Is the 1.5SMC18AT3G RoHS-compliant?
Yes, the 1.5SMC18AT3G is available in Pb-free packages, making it RoHS-compliant.
