Overview
The BZX55C18-TR is a small signal Zener diode manufactured by Vishay General Semiconductor - Diodes Division. This component is part of the BZX55 series, known for its high stability, low noise, and sharp reverse characteristic. The BZX55C18-TR is specifically designed to operate at a nominal Zener voltage of 18 volts, making it suitable for various voltage stabilization and regulation applications. It is AEC-Q101 qualified, ensuring its reliability in automotive and other demanding environments.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Zener Voltage (VZ) | 16.8 to 19.1 | V |
| Test Current (IZT) | 5 mA | mA |
| Power Dissipation (PT) | 500 mW | mW |
| Junction to Ambient Air Thermal Resistance (θJA) | 300 K/W | K/W |
| Junction Temperature (TJ) | 175 °C | °C |
| Storage Temperature Range | -65 to +175 °C | °C |
| Forward Voltage (VF) | 1.5 V (at I = 200 mA) | V |
| Package Type | DO-35 (DO-204AH) | |
| Moisture Sensitivity Level | MSL 1 |
Key Features
- Very sharp reverse characteristic
- Low reverse current level
- Very high stability
- Low noise
- AEC-Q101 qualified for automotive applications
- Compact DO-35 (DO-204AH) package
- Low thermal resistance
- High reliability and durability
Applications
The BZX55C18-TR Zener diode is widely used in various applications requiring voltage stabilization and regulation. These include:
- Voltage stabilization in power supplies and electronic circuits
- Signal clipping and limiting in audio and communication systems
- Overvoltage protection in automotive and industrial electronics
- Regulation in consumer electronics, lighting, and telecommunications equipment
Q & A
- What is the nominal Zener voltage of the BZX55C18-TR?
The nominal Zener voltage is 18 volts, with a range of 16.8 to 19.1 volts. - What is the power dissipation rating of the BZX55C18-TR?
The power dissipation rating is 500 mW. - What is the junction temperature limit for the BZX55C18-TR?
The junction temperature limit is 175 °C. - Is the BZX55C18-TR suitable for automotive applications?
Yes, it is AEC-Q101 qualified, making it suitable for automotive applications. - What is the package type of the BZX55C18-TR?
The package type is DO-35 (DO-204AH). - What is the moisture sensitivity level of the BZX55C18-TR?
The moisture sensitivity level is MSL 1. - What are some common applications of the BZX55C18-TR?
Common applications include voltage stabilization, signal clipping, overvoltage protection, and regulation in various electronic systems. - What is the forward voltage of the BZX55C18-TR?
The forward voltage is 1.5 V at a current of 200 mA. - How does the BZX55C18-TR handle thermal conditions?
The component has a thermal resistance of 300 K/W and is designed to handle high thermal conditions. - Where can I find detailed specifications for the BZX55C18-TR?
Detailed specifications can be found in the datasheet available on Vishay's official website or through distributors like Digi-Key and X-On Electronics.
