BZX79-C4V7 4.7V Voltage Regulator Zener Diode
Original price was: 0.75 EGP.0.55 EGPCurrent price is: 0.55 EGP.
The BZX79-C4V7 4.7V Voltage Regulator Zener Diode is a 500mW axial component designed for voltage stabilization, reference circuits, signal limiting, and low-power protection applications. It features an approximately ±5% voltage tolerance and a compact DO-35 glass package.
BZX79-C4V7 4.7V Voltage Regulator Zener Diode
The BZX79-C4V7 4.7V Voltage Regulator Zener Diode is a low-power semiconductor component designed to maintain an approximately stable voltage when operated in its reverse-breakdown region.
It provides a nominal Zener voltage of 4.7V at the specified test current. Therefore, it is suitable for voltage-reference circuits, basic voltage stabilization, signal clipping, level limiting, and low-power protection applications.
The diode is supplied in a compact hermetically sealed axial glass package. Its through-hole leads make it suitable for breadboards, prototype boards, educational circuits, maintenance work, and conventional printed circuit boards.
Main Features
- Part number: BZX79-C4V7
- Nominal Zener voltage: 4.7V
- Maximum total power dissipation: 500mW
- Voltage tolerance: Approximately ±5%
- Zener voltage range: Approximately 4.4V to 5.0V
- Zener test current: 5mA
- Through-hole axial construction
- Hermetically sealed glass body
- Package: SOD27, commonly identified as DO-35
- Single Zener diode configuration
- Suitable for low-power voltage regulation
- Easy to use in prototypes and PCB circuits
Common Applications
The BZX79-C4V7 4.7V Voltage Regulator Zener Diode can provide a basic voltage reference for transistor, sensor, and analog circuits. Additionally, it can be used for signal clipping and limiting when the circuit requires a voltage near 4.7V.
It is also useful in low-current shunt-regulator circuits and input-protection networks. However, the diode is not a replacement for a high-current voltage regulator, TVS diode, or complete power-supply protection circuit.
Connection and Polarity
A Zener diode is normally connected in reverse bias for voltage regulation. The cathode is identified by the band printed around one side of the glass body.
For a typical regulator circuit, connect the cathode toward the positive supply and the anode toward ground. Moreover, a correctly calculated series resistor must be connected to limit the current through the diode.
When used in forward bias, the component behaves similarly to a standard silicon diode. However, its main intended function is reverse-breakdown voltage regulation.
Important Design Notes
The 4.7V value is nominal and is measured under specified test conditions. The actual voltage can vary with current, component tolerance, temperature, and circuit design.
Always calculate the series resistor according to the input voltage, load current, required Zener current, and power dissipation. Furthermore, do not exceed the maximum 500mW power rating.
This product is supplied as one individual diode unless another quantity is selected.
