Overview
The 1SMA5918BT3 is a 1.5 Watt Plastic Surface Mount Zener Voltage Regulator produced by ON Semiconductor. This component is part of the 1SMA59xxBT3G series, which offers a range of Zener breakdown voltages from 3.3 V to 68 V. It is designed for surface mount applications and features a low profile package, making it ideal for various electronic circuits requiring voltage regulation.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Part Number | 1SMA5918BT3 | - |
| Zener Breakdown Voltage (VZ) | 4.84 - 5.36 | V |
| Maximum DC Zener Current (IZM) | 350 | mA |
| Reverse Current (IR) @ VR | 2.0 | μA |
| Forward Current (IF) | 200 | mA |
| Forward Voltage (VF) @ IF | 1.2 | V |
| DC Power Dissipation @ 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 | - |
Key Features
- Standard Zener Breakdown Voltage Range − 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 Slide or Bottom Circuit Board Mounting
- Low Profile Package
- Ideal Replacement for MELF Packages
- AEC-Q101 Qualified and PPAP Capable
- Pb-Free Devices
Applications
The 1SMA5918BT3 is suitable for a variety of applications requiring voltage regulation, including but not limited to:
- Voltage Stabilization in Electronic Circuits
- Overvoltage Protection
- Signal Clamping
- Automotive and Industrial Electronics
- Consumer Electronics
Q & A
- What is the Zener breakdown voltage range of the 1SMA5918BT3?
The Zener breakdown voltage of the 1SMA5918BT3 is between 4.84 V and 5.36 V. - What is the maximum DC power dissipation of the 1SMA5918BT3 at 75°C?
The maximum DC power dissipation is 1.5 W. - What is the ESD rating of the 1SMA5918BT3?
The ESD rating is Class 3 (> 16 kV) per Human Body Model. - Is the 1SMA5918BT3 Pb-Free?
Yes, the 1SMA5918BT3 is a Pb-Free device. - What is the operating temperature range of the 1SMA5918BT3?
The operating and storage temperature range is -65°C to +150°C. - Is the 1SMA5918BT3 AEC-Q101 qualified?
Yes, the 1SMA5918BT3 is AEC-Q101 qualified and PPAP capable. - What is the forward voltage (VF) at a forward current (IF) of 200 mA?
The forward voltage (VF) at a forward current (IF) of 200 mA is 1.2 V. - Can the 1SMA5918BT3 be used in automotive applications?
Yes, the 1SMA5918BT3 can be used in automotive and other applications requiring unique site and control change requirements. - What is the thermal resistance, junction-to-ambient (RθJA), of the 1SMA5918BT3?
The thermal resistance, junction-to-ambient (RθJA), is 250 °C/W. - Is the 1SMA5918BT3 suitable for high-reliability applications?
Yes, the 1SMA5918BT3 is designed for high-reliability applications and is AEC-Q101 qualified.
