Overview
The BZX84C3V9-HE3-18 is a silicon planar Zener diode produced by Vishay General Semiconductor - Diodes Division. This component is part of the BZX84 series, which is known for its high reliability and precision in voltage regulation. The BZX84C3V9-HE3-18 is specifically designed to provide a stable Zener voltage, making it suitable for a variety of applications requiring voltage stabilization and regulation.
Key Specifications
| Parameter | Test Condition | Symbol | Value | Unit |
|---|---|---|---|---|
| Zener Voltage Range | At IZT1 = 5 mA | VZ | 3.7 - 3.9 - 4.1 | V |
| Test Current | IZT1 | IZT1 | 5 mA | mA |
| Reverse Leakage Current | At VR = 1 V | IR | 1 μA | μA |
| Dynamic Resistance | At IZT1 = 5 mA, f = 1 kHz | ZZ | 600 Ω | Ω |
| Temperature Coefficient | At IZT1 = 5 mA | αVZ | -7 x 10^-4/°C | 10^-4/°C |
| Power Dissipation | Tamb = 25 °C, device on fiberglass substrate | Ptot | 300 mW | mW |
| Thermal Resistance Junction to Ambient Air | Tamb = 25 °C, device on fiberglass substrate | RthJA | 420 K/W | K/W |
| Junction Temperature | Tj | 150 °C | °C | |
| Storage Temperature Range | Tstg | -65 to 150 °C | °C |
Key Features
- High Precision Zener Voltage: The BZX84C3V9-HE3-18 has a Zener voltage range of 3.7 to 4.1 V, graded according to the international E24 standard with a standard tolerance of ±5%.
- Low Dynamic Resistance: It features a dynamic resistance of 600 Ω at 1 kHz, ensuring stable voltage regulation under varying current conditions.
- Low Reverse Leakage Current: The component has a reverse leakage current of 1 μA at 1 V, minimizing unwanted current flow.
- High Temperature Stability: The diode can operate with a junction temperature up to 150 °C and has a temperature coefficient of -7 x 10^-4/°C.
- Compact Packaging: The BZX84C3V9-HE3-18 is available in the SOT-23 package, which is compact and suitable for space-constrained designs.
Applications
- Voltage Regulation: The BZX84C3V9-HE3-18 is ideal for voltage stabilization and regulation in various electronic circuits.
- Signal Limiting: It can be used to limit signal voltages to prevent damage to sensitive components.
- Circuit Protection: The diode can serve as a protective component against voltage spikes and transients.
- Automotive and Industrial Systems: Suitable for use in automotive, industrial, and consumer electronics where reliable voltage regulation is critical.
Q & A
- What is the Zener voltage range of the BZX84C3V9-HE3-18?
The Zener voltage range is 3.7 to 4.1 V.
- What is the typical test current for the Zener voltage measurement?
The typical test current is 5 mA.
- What is the reverse leakage current of the BZX84C3V9-HE3-18?
The reverse leakage current is 1 μA at 1 V.
- What is the dynamic resistance of the BZX84C3V9-HE3-18 at 1 kHz?
The dynamic resistance is 600 Ω at 1 kHz.
- What is the maximum junction temperature for the BZX84C3V9-HE3-18?
The maximum junction temperature is 150 °C.
- What is the storage temperature range for the BZX84C3V9-HE3-18?
The storage temperature range is -65 to 150 °C.
- In what package is the BZX84C3V9-HE3-18 available?
The BZX84C3V9-HE3-18 is available in the SOT-23 package.
- What are some common applications of the BZX84C3V9-HE3-18?
Common applications include voltage regulation, signal limiting, circuit protection, and use in automotive and industrial systems.
- Who is the manufacturer of the BZX84C3V9-HE3-18?
The manufacturer is Vishay General Semiconductor - Diodes Division.
- What is the power dissipation rating of the BZX84C3V9-HE3-18?
The power dissipation rating is 300 mW at Tamb = 25 °C, device on fiberglass substrate.
