Overview
The 1SMB5.0AT3G is a Transient Voltage Suppressor (TVS) diode produced by Littelfuse Inc. This component is part of the SMB series, designed to protect voltage-sensitive components from high voltage, high energy transients. Although this series has been marked as End of Life (EOL) as of December 31, 2017, and is not recommended for new designs, it remains relevant for existing applications and maintenance. The SMB series is known for its excellent clamping capability, high surge capability, low zener impedance, and fast response time.
Key Specifications
| Property | Value |
|---|---|
| Polarity | Unipolar |
| Standard Zener Breakdown Voltage Range | 6.7 V to 199 V |
| Peak Power Rating | 600 W at 1 ms |
| Reverse Standoff Voltage Ratings | 5 V to 170 V |
| ESD Rating | Class 3 (> 16 kV) per Human Body Model |
| Maximum Clamp Voltage at Peak Pulse Current | Varies by device (see datasheet) |
| Low Leakage | < 5 µA Above 10 V |
| UL Recognition | UL 497B for Isolated Loop Circuit Protection |
| Response Time | Typically Below 1 ns |
| Package | Void-free, transfer-molded, thermosetting plastic |
| Finish | All external surfaces are corrosion resistant and leads are readily solderable |
Key Features
- Excellent clamping capability and high surge capability.
- Low zener impedance and fast response time (typically < 1 ns).
- High peak power rating of 600 W at 1 ms.
- Low leakage current (< 5 µA above 10 V).
- UL 497B recognition for isolated loop circuit protection.
- Pb-free packages available.
- Void-free, transfer-molded, thermosetting plastic package.
- Corrosion-resistant finish with readily solderable leads.
Applications
The 1SMB5.0AT3G is ideally suited for use in various applications, including:
- Communication systems.
- Numerical controls.
- Process controls.
- Medical equipment.
- Business machines.
- Power supplies.
- Industrial and consumer electronics.
Q & A
- What is the primary function of the 1SMB5.0AT3G?
The primary function of the 1SMB5.0AT3G is to protect voltage-sensitive components from high voltage, high energy transients.
- What is the peak power rating of the 1SMB5.0AT3G?
The peak power rating is 600 W at 1 ms.
- What is the ESD rating of the 1SMB5.0AT3G?
The ESD rating is Class 3 (> 16 kV) per Human Body Model.
- What is the response time of the 1SMB5.0AT3G?
The response time is typically below 1 ns.
- Is the 1SMB5.0AT3G still recommended for new designs?
No, the 1SMB5.0AT3G series has been marked as End of Life (EOL) as of December 31, 2017, and is not recommended for new designs. Instead, the SMBJ series is recommended as a replacement.
- What are the typical applications of the 1SMB5.0AT3G?
Typical applications include communication systems, numerical controls, process controls, medical equipment, business machines, power supplies, and other industrial/consumer electronics.
- Does the 1SMB5.0AT3G have UL recognition?
- What is the package material of the 1SMB5.0AT3G?
The package is made of void-free, transfer-molded, thermosetting plastic.
- Are Pb-free packages available for the 1SMB5.0AT3G?
- What is the maximum case temperature for soldering purposes?
The maximum case temperature for soldering purposes is 260°C for 10 seconds.
