BZX55C4V7 1/2W Zener Diode (Pack of 40)

The BZX55C4V7 is indeed a Zener diode, specifically a small-signal Zener diode. Here’s what each part of its name and specifications typically mean:

• BZX55C: This is the series designation for Zener diodes. The “55” indicates that it belongs to the BZX55 series. Different series of Zener diodes have different voltage ranges and characteristics.
• 4V7: This indicates the Zener voltage of the diode, which is 4.7 volts. Zener diodes are designed to maintain a constant voltage across their terminals, called the Zener voltage, when they are operated in the reverse breakdown region.
• 1/2W: This specifies the power rating of the diode, which is 1/2 watt. This indicates the maximum power the diode can dissipate without being damaged.
• Package Type: The BZX55C series Zener diodes typically come in various packages, such as DO-35 (also known as DO-204AH), which is a cylindrical glass encapsulated package.

As a small-signal Zener diode, the BZX55C4V7 is commonly used in low-power applications where precise voltage regulation is needed, such as voltage reference circuits, voltage clamping circuits, and voltage regulators. They are particularly useful for stabilizing voltage levels in electronic circuits by providing a constant voltage across their terminals, regardless of variations in input voltage or load conditions.