Overview
The BZX84C18ET1 is a Zener voltage regulator diode produced by onsemi. This component is part of the BZX84 series, which is designed to provide voltage regulation in a compact, surface-mount package. The BZX84C18ET1 is specifically rated for a Zener voltage of 18 volts and is suitable for applications requiring precise voltage regulation with minimal space requirements.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Reverse Zener Voltage (VZ) at IZT = 5 mA | 17.1 - 18.9 | V |
| Maximum Zener Impedance (ZZT) at IZT = 5 mA | 45 - 60 | Ω |
| Reverse Leakage Current (IR) at VR | 0.05 μA | μA |
| Forward Voltage (VF) at IF = 10 mA | 0.90 V Max. | V |
| Maximum Temperature Coefficient of VZ | ± 10 mV/°C | mV/°C |
| Maximum Capacitance at VR = 0 and f = 1 MHz | 45 pF | pF |
| Power Dissipation | 225 mW on FR-4 or FR-5 Board | mW |
| Operating Temperature Range | -55°C to +150°C | °C |
| Storage Temperature Range | -65°C to +150°C | °C |
| ESD Rating | Class 3 (> 16 kV) per Human Body Model | kV |
Key Features
- Compact SOT-23 surface-mount package designed for optimal automated board assembly.
- Zener breakdown voltage range from 2.4 V to 75 V, with this specific model rated at 18 V.
- High power dissipation rating of 225 mW on FR-4 or FR-5 boards.
- Low reverse leakage current and high impedance for precise voltage regulation.
- ESD rating of Class 3 (> 16 kV) per Human Body Model for enhanced reliability.
- Pb-free packages available, making it suitable for RoHS-compliant designs.
Applications
- Cellular phones and other handheld portable devices.
- High-density PC boards and other compact electronic systems.
- Voltage regulation in power supplies and DC-DC converters.
- Protection circuits against voltage spikes and overvoltages.
- Automotive and industrial applications requiring robust voltage regulation.
Q & A
- What is the Zener voltage of the BZX84C18ET1?
The Zener voltage of the BZX84C18ET1 is 18 V.
- What is the maximum power dissipation of the BZX84C18ET1 on an FR-4 board?
The maximum power dissipation is 225 mW.
- What is the operating temperature range of the BZX84C18ET1?
The operating temperature range is -55°C to +150°C.
- Is the BZX84C18ET1 RoHS-compliant?
- What is the ESD rating of the BZX84C18ET1?
The ESD rating is Class 3 (> 16 kV) per Human Body Model.
- What package type is the BZX84C18ET1 available in?
The BZX84C18ET1 is available in the SOT-23 surface-mount package.
- What are some typical applications of the BZX84C18ET1?
Typical applications include cellular phones, handheld portables, high-density PC boards, and voltage regulation in power supplies.
- What is the reverse leakage current of the BZX84C18ET1?
The reverse leakage current is 0.05 μA.
- What is the maximum forward voltage of the BZX84C18ET1 at IF = 10 mA?
The maximum forward voltage is 0.90 V.
- How is the BZX84C18ET1 marked on the package?
The device marking information can be found in the Electrical Characteristics table of the datasheet.
