Overview
The 1SMB5942BT3G is a 3-watt Zener diode produced by onsemi, designed for general-purpose voltage regulation applications. This device is part of the 1SMB59 series, which offers a wide range of Zener voltages from 3.3 V to 200 V. The 1SMB5942BT3G specifically has a nominal Zener voltage of 51 V, making it suitable for various voltage regulation needs.
It features an ESD rating of Class 3 (>16 kV) per Human Body Model, ensuring robust protection against electrostatic discharge. The device also has a flat handling surface for accurate placement and is designed for top-side or bottom circuit board mounting.
This Zener diode is AEC-Q101 qualified and PPAP capable, making it suitable for automotive and other applications requiring stringent quality and reliability standards.
Key Specifications
| Parameter | Symbol | Value | Unit |
|---|---|---|---|
| Zener Voltage | VZ | 48.45 - 53.55 | V |
| Maximum Zener Current | IZM | 7.3 | mA |
| Maximum Power Dissipation | Pmax | 3 | W |
| ESD Rating | - | >16 kV | - |
| Package Type | - | SMB (DO-214AA) | - |
| Lead Temperature for Soldering | - | 260°C for 10 seconds | - |
| Flammability Rating | - | UL94 V-0 | - |
| Polarity Indication | - | Cathode indicated by polarity band | - |
Key Features
- Zener Voltage Range: 48.45 V to 53.55 V, with a nominal voltage of 51 V.
- ESD Rating: Class 3 (>16 kV) per Human Body Model, providing robust protection against electrostatic discharge.
- Flat Handling Surface: Designed for accurate placement on circuit boards.
- Package Design: Suitable for top-side or bottom circuit board mounting.
- AEC-Q101 Qualified and PPAP Capable: Suitable for automotive and other applications requiring unique site and control change requirements.
- Pb-Free Package: Environmentally friendly and compliant with RoHS standards.
- Corrosion Resistant Finish: All external surfaces are corrosion resistant with readily solderable leads.
Applications
- Voltage Regulation: Ideal for stabilizing voltage in power supplies and other electronic circuits.
- Waveform Clipping: Used to limit voltage peaks in signal processing and protection circuits.
- MOSFET Gate Protection: Protects MOSFET gates from overvoltage conditions.
- General Usage: Suitable for a wide range of electronic devices requiring voltage regulation and protection.
- Automotive Applications: AEC-Q101 qualified, making it suitable for use in automotive systems.
Q & A
- What is the nominal Zener voltage of the 1SMB5942BT3G?
The nominal Zener voltage of the 1SMB5942BT3G is 51 V, with a range of 48.45 V to 53.55 V.
- What is the maximum power dissipation of the 1SMB5942BT3G?
The maximum power dissipation is 3 watts.
- What is the ESD rating of the 1SMB5942BT3G?
The ESD rating is Class 3, which is greater than 16 kV per Human Body Model.
- What package type does the 1SMB5942BT3G use?
The device is packaged in an SMB (DO-214AA) package.
- Is the 1SMB5942BT3G AEC-Q101 qualified?
Yes, the 1SMB5942BT3G is AEC-Q101 qualified and PPAP capable, making it suitable for automotive applications.
- What is the lead temperature for soldering purposes?
The maximum lead temperature for soldering purposes is 260°C for 10 seconds.
- How is the polarity indicated on the 1SMB5942BT3G?
The polarity is indicated by a molded polarity notch on the cathode side.
- Is the 1SMB5942BT3G Pb-free?
Yes, the device is Pb-free and compliant with RoHS standards.
- What are some common applications of the 1SMB5942BT3G?
Common applications include voltage regulation, waveform clipping, MOSFET gate protection, and general usage in electronic devices.
- What is the flammability rating of the 1SMB5942BT3G?
The flammability rating is UL94 V-0.
