DDZ20ASF-7

Due to market price fluctuations, if you need to purchase or consult the price. You can contact us or emial to us:   sales@allicdata.com

Diodes - Zener - Single is a category of semiconductor diodes that are designed to function as a voltage regulator. The DDZ20ASF-7 is a diode belonging to this particular category. It has a JEDEC Type number of DDZ20ASF-7 and is categorized as RoHS Compliant and has a maximum reverse surge current of 8 siemen. The first two digits of the DDZ identifier correspond to the breakdown voltage and the remainder to additional data.

This diode is used to prevent the voltage from exceeding the predefined limit. It basically restricts the voltage above a certain level and this is known as the zener breakdown. This prevents the signal from going any higher and thereby protects other components in the circuit from damage due to excess voltage.

A practical application for the DDZ20ASF-7 is in a simple DC power supply. To ensure that the power supply does not exceed the voltage any higher than desired, a diode is usually connected in series with the load and set to clamp the output to a maximum level. The Zener diode, such as the DDZ20ASF-7, is a good choice because it has a wide range of breakdown voltages available and is capable of handling large amounts of reverse current.

A DDZ20ASF-7 can also be used in applications where noise needs to be filtered out, such as in audio amplifiers. As the frequency of the audio signal increases, the diode can be tuned to begin clamping the voltage at a certain point and therefore effectively filter out high frequency signals.

The principle of zener breakdown is a two terminal operation. The zener current passes through the internal region of the diode, called the p-n-junction of the diode. When the voltage is increased, the electrons go from the n-side to the p-side and the valence holes from the p-side to the n-side. This is called electron injection and dissipates over the diode from the terminal to the junction. This process continues until the zener voltage reaches a certain amount, at which point the breakdown occurs, resulting in the current remaining constant.

With the breakdown voltage, the diode needs to have a low resistivity across the junction to be able to sustain the reverse current. This, however, means that the forward voltage drop will have to be higher. The DDZ20ASF-7 is able to maintain a low forward voltage drop, which makes it ideal for applications such as voltage regulation.

In conclusion, the DDZ20ASF-7 is a Zener diode with a JEDEC type number of DDZ20ASF-7 and a maximum reverse surge current of 8siemen. It is suitable for applications such as voltage regulation and noise filtering and works on the principle of zener breakdown.

The specific data is subject to PDF, and the above content is for reference