Overview
The 1SMA5921BT3G is a 1.5 Watt Zener diode produced by onsemi, designed for general purpose voltage regulation applications. This device is part of the 1SMA59xxBT3G series, which offers a wide range of Zener breakdown voltages from 3.3 V to 68 V. The 1SMA5921BT3G specifically has a Zener voltage of 6.8 V, making it suitable for various voltage regulation, waveform clipping, and MOSFET gate protection tasks. It is also AEC-Q101 qualified and PPAP capable, ensuring reliability in automotive and other demanding applications.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Zener Voltage (VZ) | 6.46 - 6.8 - 7.14 | V |
| Maximum DC Zener Current (IZM) | 200 | mA |
| Reverse Current (IR) @ VR | 5.2 | μA |
| Forward Voltage (VF) @ IF | 1.2 | V |
| Maximum Power Dissipation (PD) @ TL = 75°C | 1.5 | W |
| Thermal Resistance, Junction-to-Lead (RθJL) | 50 | °C/W |
| Thermal Resistance, Junction-to-Ambient (RθJA) | 250 | °C/W |
| Operating and Storage Temperature Range | -65 to +150 | °C |
| ESD Rating | Class 3 (> 16 kV) per Human Body Model | |
| Package Type | SMA (DO-214AC) | |
| Flammability Rating | UL 94 V-0 |
Key Features
- Standard Zener breakdown voltage range from 3.3 V to 68 V
- ESD Rating of Class 3 (> 16 kV) per Human Body Model
- Flat handling surface for accurate placement
- Package design for top side or bottom circuit board mounting
- Low profile package
- Ideal replacement for MELF packages
- AEC-Q101 qualified and PPAP capable
- SZ prefix for automotive and other applications requiring unique site and control change requirements
- Pb-free devices
Applications
- Voltage regulation
- Waveform clipping
- MOSFET gate protection
- General purpose voltage regulation in various electronic devices
- Automotive applications due to AEC-Q101 qualification
- Other demanding applications requiring high reliability and ESD protection
Q & A
- What is the Zener voltage of the 1SMA5921BT3G?
The Zener voltage of the 1SMA5921BT3G is 6.46 V to 6.8 V to 7.14 V.
- What is the maximum DC Zener current for this device?
The maximum DC Zener current (IZM) is 200 mA.
- What is the ESD rating of the 1SMA5921BT3G?
The ESD rating is Class 3 (> 16 kV) per Human Body Model.
- What is the package type of the 1SMA5921BT3G?
The package type is SMA (DO-214AC).
- Is the 1SMA5921BT3G AEC-Q101 qualified?
- What are the typical applications of the 1SMA5921BT3G?
Typical applications include voltage regulation, waveform clipping, MOSFET gate protection, and general purpose voltage regulation in various electronic devices.
- What is the operating temperature range of the 1SMA5921BT3G?
The operating and storage temperature range is -65°C to +150°C.
- Is the 1SMA5921BT3G Pb-free?
- What is the maximum power dissipation of the 1SMA5921BT3G at TL = 75°C?
The maximum power dissipation (PD) at TL = 75°C is 1.5 W.
- What is the thermal resistance, junction-to-ambient (RθJA) of the 1SMA5921BT3G?
The thermal resistance, junction-to-ambient (RθJA) is 250 °C/W.
