DDZ20C-7 Discrete Semiconductor Products

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Diodes, in general, are typically used as a rectifier for electrical circuitry, functioning as a one-way electrical switch within the circuitry. A Zener diode is a special type of diode which works on a different principle: it allows current to pass through opposite of the normal electrical current when the voltage becomes greater than the Zener voltage at which the diode was designed to breakdown. It is a general-purpose diode designed to operate in switching and low power mode.

The DDZ20C-7 (20V, 7mA) Zener diode is often used for voltage regulation, clipping, and clamping in switching circuits. It has a breakdown electric field strength of 175V/μm and exhibits a reverse characteristic of a diode. The operating temperature range of the DDZ20C-7 is -55°C to +125°C. This Zener diode can exhibit a forward voltage drop of 0.2V at 7mA and reverse voltage stabilizing capability of 18V.

When the voltage across the terminals of a Zener diode is forward biased and is held below the Zener voltage, it acts like a normal diode, allowing current to flow under normal diode conditions. As the value of the voltage across the terminals reach the zener voltage, the diode begins to breakdown and allows current to flow in the opposite direction. As long as the voltage across the terminals of the diode is held above the Zener voltage, the current continues to flow from the voltage-sensing cathode to the anode.

When the DDZ20C-7 is used for voltage regulation, the output voltage is set to the zener voltage. Current is limited by a series resistor and flows from the output of the power supply circuit or from the cathode to the anode of the Zener diode. The Zener diode, in this application, clamps the output voltage to the Zener voltage of the diode, regardless of changes in load voltage or current. In switching and low power applications, the DDZ20C-7 works as a voltage reference and will maintain a stable, accurate output. The diode can also be used in a clamping device to protect against over-voltage damage.

The DDZ20C-7 is also useful when used in transformer-isolated circuits, as it can isolate and regulate the voltage across the transformer secondary winding. The Zener diode allows the regulation of the output voltage from the secondary winding and provides isolation from the primary of the transformer. In addition, it can be used in applications to monitor and protect against out-of-tolerance voltages. The DDZ20C-7 also protects against over-voltage conditions by providing a low voltage protection device in series with the load.

The DDZ20C-7 is designed to provide excellent performance and reliability. The low power loss of the diode means it operates properly even at higher temperatures. The diode has excellent surge current characteristics, making it suitable for use in high power switching applications. Reliability-wise, the diode is capable of handling up to 1000 cycles of reverse voltage without any damage. The diode is also resistant to thermal shock and vibration, ensuring that it provides consistent performance in dynamic environments.

The DDZ20C-7 Zener diode is a versatile, low power consuming device ideal for low power and switching applications. The device’s ability to offer voltage regulation, isolation, and protection makes it a useful tool in a wide range of applications.

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