Overview
The 1.5SMC56AT3G is a Transient Voltage Suppressor (TVS) diode produced 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 | 47.8 V | V |
| Nominal Breakdown Voltage | VBR | 53.2 - 58.8 V | V |
| Peak Power Dissipation @ 1 ms | PPK | 1500 W | W |
| ESD Rating | - | Class 3 (> 16 kV) per Human Body Model | - |
| Maximum Reverse Leakage Current @ VRWM | IR | 5 µA | µA |
| Maximum Clamp Voltage @ Peak Pulse Current | VC @ IPP | 77 V | V |
| Forward Surge Current @ TA = 25°C | IFSM | 200 A | A |
| Operating and Storage Temperature Range | TJ, Tstg | -65 to +150 °C | °C |
| Thermal Resistance from Junction-to-Lead | RθJL | 18.3 °C/W | °C/W |
| Thermal Resistance from Junction-to-Ambient | RθJA | 6.1 °C/W | °C/W |
Key Features
- Excellent clamping capability and high surge capability.
- Low zener impedance.
- Fast response time, typically less than 1 ns.
- Pb-free packages available.
- High ESD rating of Class 3 (> 16 kV) per Human Body Model.
- Low leakage current, less than 5 µA above 10 V.
Applications
The 1.5SMC56AT3G is ideally suited for various applications including communication systems, automotive systems, numerical controls, process controls, medical equipment, business machines, power supplies, and many other industrial and consumer applications.
Q & A
- What is the primary function of the 1.5SMC56AT3G? The primary function is to protect voltage-sensitive components from high voltage, high energy transients.
- What is the peak power dissipation of the 1.5SMC56AT3G? The peak power dissipation is 1500 W @ 1 ms.
- What is the ESD rating of the 1.5SMC56AT3G? The ESD rating is Class 3 (> 16 kV) per Human Body Model.
- What is the maximum forward surge current? The maximum forward surge current is 200 A @ TA = 25°C.
- What is the operating and storage temperature range? The operating and storage temperature range is -65 to +150 °C.
- What are the typical applications for the 1.5SMC56AT3G? Typical applications include communication systems, automotive systems, numerical controls, process controls, medical equipment, and power supplies.
- What is the thermal resistance from junction-to-lead? The thermal resistance from junction-to-lead is 18.3 °C/W.
- Is the 1.5SMC56AT3G available in Pb-free packages? Yes, Pb-free packages are available.
- What is the response time of the 1.5SMC56AT3G? The response time is typically less than 1 ns.
- What is the maximum clamp voltage at peak pulse current? The maximum clamp voltage at peak pulse current is 77 V.
