Overview
The 1.5SMC27AT3G 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 | 23.1 | V |
| Breakdown Voltage | VBR | 25.7 - 28.4 | V |
| Peak Power Dissipation @ 1 ms | PPK | 1500 | W |
| ESD Rating | - | Class 3 (> 16 kV) per Human Body Model | - |
| Maximum Reverse Leakage Current @ VRWM | IR | 5 µA | - |
| Forward Surge Current @ TA = 25°C | IFSM | 200 | A |
| Operating and Storage Temperature Range | TJ, Tstg | -65 to +150 | °C |
| Thermal Resistance from Junction-to-Lead | RθJL | 18.3 | °C/W |
| Thermal Resistance from Junction-to-Ambient | RθJA | 6.1 | °C/W |
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 voltage regulation.
- Fast response time, typically less than 1 ns.
- ESD rating of Class 3 (> 16 kV) per Human Body Model.
- Low leakage current of less than 5 µA above 10 V.
- Pb-free packages available, suitable for RoHS compliance.
- SMC package ideal for small form factor requirements.
Applications
The 1.5SMC27AT3G 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 1.5SMC27AT3G 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 1.5SMC27AT3G?
The working peak reverse voltage (VRWM) for the 1.5SMC27AT3G is 23.1 V.
- What is the peak power dissipation of the 1.5SMC27AT3G?
The peak power dissipation is 1500 W @ 1 ms.
- What is the ESD rating of the 1.5SMC27AT3G?
The ESD rating is Class 3 (> 16 kV) per Human Body Model.
- What is the maximum forward surge current for the 1.5SMC27AT3G?
The maximum forward surge current is 200 A at TA = 25°C.
- What is the operating and storage temperature range for the 1.5SMC27AT3G?
The operating and storage temperature range is -65 to +150°C.
- What package type is the 1.5SMC27AT3G available in?
The 1.5SMC27AT3G is available in an SMC package.
- Is the 1.5SMC27AT3G RoHS compliant?
- What are some typical applications for the 1.5SMC27AT3G?
Typical applications include communication systems, automotive systems, process control systems, medical equipment, and power supplies.
- What is the response time of the 1.5SMC27AT3G?
The response time is typically less than 1 ns.
