Overview
The BZX55C4V7 is a Zener diode produced by Fairchild Semiconductor, now part of onsemi. This component is part of the BZX55C series, which offers a wide range of voltage ratings from 2.4 to 200 volts. The BZX55C4V7 is specifically designed to provide a stable voltage reference and to protect electronic circuits from voltage spikes and surges.
Although the BZX55C4V7 is currently listed as obsolete and not in production, it remains relevant for legacy systems and maintenance of existing electronic designs. The device is housed in a DO-35 glass case, which provides excellent thermal and electrical performance.
Key Specifications
| Parameter | Value | Units |
|---|---|---|
| Zener Voltage (VZ) @ IZ | 4.0 - 4.7 | V |
| Test Current (IZ) | 5 mA | mA |
| Reverse Current (IR) @ VR | 0.1 μA @ 3.6 V | μA @ V |
| Maximum Zener Current (IZM) | 0.5 mA | mA |
| Power Dissipation (PD) @ TL ≤ 75°C | 500 mW | mW |
| Derate above 75°C | 4.0 mW/°C | mW/°C |
| Operating and Storage Temperature Range | -65 to +200 | °C |
| Forward Voltage (VF) @ IF = 100 mA | 1.3 V Max. | V |
Key Features
- Complete Voltage Range: The BZX55C series, including the BZX55C4V7, offers a comprehensive range of voltage ratings from 2.4 to 200 volts, making it versatile for various applications.
- High Surge Current Capability: These diodes are designed to handle high surge currents, providing robust protection against transient voltage spikes.
- High Peak Reverse Power Dissipation: The BZX55C4V7 can dissipate high peak reverse power, enhancing its ability to protect circuits from overvoltage conditions.
- DO-35 Glass Case: The device is packaged in a DO-35 glass case, which ensures good thermal and electrical performance.
- Wide Operating Temperature Range: The diode operates over a temperature range of -65 to +200°C, making it suitable for a variety of environmental conditions.
Applications
- Voltage Regulation: The BZX55C4V7 is commonly used for voltage regulation in electronic circuits, providing a stable voltage reference.
- Overvoltage Protection: It is used to protect electronic circuits from voltage spikes and surges, ensuring the reliability and longevity of the system.
- Signal Clamping: The diode can be used to clamp signal voltages to a specific level, preventing damage to sensitive components.
- Legacy Systems: Although obsolete, it remains relevant for the maintenance and repair of older electronic systems that still utilize this component.
Q & A
- What is the zener voltage range for the BZX55C4V7?
The zener voltage range for the BZX55C4V7 is 4.0 to 4.7 volts.
- What is the maximum power dissipation of the BZX55C4V7?
The maximum power dissipation is 500 mW at a lead temperature (TL) of 75°C or less, with a derating of 4.0 mW/°C above 75°C.
- What is the operating and storage temperature range for the BZX55C4V7?
The operating and storage temperature range is -65 to +200°C.
- What is the forward voltage of the BZX55C4V7 at 100 mA?
The forward voltage (VF) is 1.3 V maximum at an forward current (IF) of 100 mA.
- Is the BZX55C4V7 still in production?
No, the BZX55C4V7 is currently listed as obsolete and not in production.
- What type of package does the BZX55C4V7 come in?
The BZX55C4V7 is housed in a DO-35 glass case.
- What are some common applications of the BZX55C4V7?
Common applications include voltage regulation, overvoltage protection, and signal clamping.
- What is the maximum zener current (IZM) for the BZX55C4V7?
The maximum zener current (IZM) is 0.5 mA.
- How is the BZX55C4V7 marked?
The device is marked with the Fairchild logo, device name, and voltage rating according to the specified marking requirements.
- What is the reverse current (IR) at the specified voltage for the BZX55C4V7?
The reverse current (IR) is 0.1 μA at a voltage of 3.6 V.
- Can the BZX55C4V7 be used in life support devices or systems?
No, Fairchild Semiconductor's products, including the BZX55C4V7, are not authorized for use as critical components in life support devices or systems without express written approval.
