CMPZ5221B TR

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The CMPZ5221B TR diode is designed to provide a wide range of general purpose applications and is among the most commonly used zener diodes available on the market. Over the past decades, it has found wide acceptance in engineered solutions including consumer electronics, automotive, communications, military and aerospace. The CMPZ5221B TR offers several advantages that make it popular and successful in today’s demanding applications.

The CMPZ5221B TR diode belongs to the single zener diode family and is mainly used to regulate and protect circuits from over-voltage. The diode is primarily designed to clamp the voltage levels at desired level to protect other components from transient voltage spikes. It can also be used in applications as a voltage reference for maintaining a predetermined output voltage. The CMPZ5221B TR is designed to provide continuous zener breakdown over a wide range of operating temperatures.

The primary application field of the CMPZ5221B TR diode is protection circuitry and voltage control. It has a reverse breakdown voltage (Vz) of 5.21V and is used in low-loss voltage regulation and low-power applications. For these applications, the diode offers an extremely low Vz variation with temperature. It ensures a stable voltage across an electric circuit, which is essential for maintaining performance, reliability and accuracy.

The CMPZ5221B TR diode consists of a P-N junction housed in a hermetically sealed miniature package that allows for easy mounting and transfer of energy. It’s heat-resistant and can absorb upto 1.0 Watt of power dissipation. The package is available in various sizes and also offers high current-handling capabilities up to 1A. It’s emission-free and provides improved EMI performance.

The working principle of the CMPZ5221B TR relies on a zener breakdown. When a reverse voltage is applied to the diode, the junction barrier potential decreases until it reaches a critical level referred as the zener breakdown voltage (Vz). At this point, a large current begins to flow in the diode and the voltage across the diode remains constant. This allows the CMPZ5221B TR to regulate the voltage across its terminals to its designated Vz value. However, it should be noted that this breakdown principle does not apply for all reverse voltages, so its important to be aware of the maximum operating voltage before its use.

The CMPZ5221B TR diode is a versatile and reliable solution for low-current, low-voltage applications. It offers a wide range of protection against over-voltage, providing accurate and stable voltage outputs with minimal power dissipation. Its resilient design and excellent mechanical properties make it a popular choice for industrial, automotive and consumer applications.

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