Overview
The 1SMB5945BT3G is a 3 Watt plastic surface mount Zener diode produced by onsemi. This device is designed for general purpose voltage regulation applications, offering a wide range of Zener voltages from 3.3 V to 200 V. It is part of the 1SMB59 series, which is known for its reliability and versatility in various electronic circuits.
The 1SMB5945BT3G is AEC-Q101 qualified and PPAP capable, making it suitable for automotive and other applications that require unique site and control change requirements. The device features a flat handling surface for accurate placement and a package design that allows for top side or bottom circuit board mounting.
Key Specifications
| Parameter | Symbol | Value | Unit |
|---|---|---|---|
| Zener Voltage | VZ | 64.6 - 71.4 | V |
| Maximum Zener Impedance at IZT | ZZT | 5.5 | Ω |
| Reverse Leakage Current at VR | IR | 120 μA | μA |
| Maximum DC Zener Current | IZM | 1.7 A | A |
| Power Dissipation | P Max | 3 W | W |
| ESD Rating | - | Class 3 (>16 kV) per Human Body Model | - |
| Package Type | - | SMB (Surface Mount) | - |
| Maximum Case Temperature for Soldering | - | 260°C for 10 seconds | - |
| Flammability Rating | - | UL94 V-0 | - |
Key Features
- Zener Voltage Range: 3.3 V to 200 V, with the 1SMB5945BT3G specifically rated at 64.6 V to 71.4 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 the circuit board.
- Package Design: Allows for top side or bottom circuit board mounting, enhancing flexibility in design.
- AEC-Q101 Qualified and PPAP Capable: Suitable for automotive and other applications requiring stringent quality standards.
- Pb-Free Package: Environmentally friendly and compliant with lead-free regulations.
- Modified L-Bend Leads: Provides more contact area to bond pads, improving solderability and reliability.
Applications
- Voltage Regulation: Used in circuits requiring stable voltage regulation.
- Waveform Clipping: Can be used to clip voltage waveforms to prevent overvoltage conditions.
- MOSFET Gate Protection: Protects MOSFET gates from voltage spikes and overvoltages.
- General Usage: Suitable for a wide range of electronic devices and systems.
- Automotive Applications: AEC-Q101 qualification makes it suitable for use in automotive systems.
Q & A
- What is the Zener voltage range of the 1SMB5945BT3G?
The Zener voltage range of the 1SMB5945BT3G is 64.6 V to 71.4 V.
- What is the maximum power dissipation of the 1SMB5945BT3G?
The maximum power dissipation is 3 W.
- What is the ESD rating of the 1SMB5945BT3G?
The ESD rating is Class 3 (>16 kV) per Human Body Model.
- Is the 1SMB5945BT3G Pb-Free?
- What is the maximum case temperature for soldering the 1SMB5945BT3G?
The maximum case temperature for soldering is 260°C for 10 seconds.
- What are the typical applications of the 1SMB5945BT3G?
Typical applications include voltage regulation, waveform clipping, MOSFET gate protection, and general usage in various electronic devices.
- Is the 1SMB5945BT3G suitable for automotive applications?
- What is the flammability rating of the 1SMB5945BT3G?
The flammability rating is UL94 V-0.
- How is the polarity of the 1SMB5945BT3G indicated?
The polarity is indicated by a molded polarity notch.
- What is the package type of the 1SMB5945BT3G?
The package type is SMB (Surface Mount).
