DFLT18AQ-7 Circuit Protection

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TVS (transient voltage suppression) diodes are an important component of electronic circuits to protect against transient surges. One example of a TVS diode is the DFLT18AQ-7. This diode has several important features and is designed to protect circuits from transient over-voltages in a variety of applications.

The DFLT18AQ-7 diode is a Single Bi-Directional Transient Voltage Suppressor with an 18V Working Voltage and a 5A Surge Current Rating. It is available in an 8-lead surface mount package measuring 1.4mm height and occupying an area of just 2.67mm pitch (2mm x 1.3mm). This make it ideal for use in applications with space or weight restrictions.

The DFLT18AQ-7 is fast acting with a maximum response time of 5ns. It is also able to suppress transients in both directions, making it ideal for applications where transient protection is needed in both directions. It has an excellent clamping performance with a maximum clamping voltage of 34V at 5A.

The DFLT18AQ-7 is well suited for a number of applications, including over-voltage protection in automotive, telecom, medical, and industrial applications. In automotive applications, it can be used as an ECU protection against electrostatic discharges and transients. In telecom applications, it can be used for protection of telephone and data lines against over-voltages and outages. In medical applications, it is suitable for use in ECG and EEG equipment to protect against transients.

The working principle of the DFLT18AQ-7 is quite simple. When the input voltage exceeds a certain threshold, usually 18V, the TVS diode will start to conduct, clamping the voltage and limiting the current flow. The TVS diode can be thought of as a fast-acting fuse, as it will absorb the excessive energy and then reset itself when the voltage drops back down below the threshold. This is why it is important to choose the right TVS diode for the application, as it needs to be able to handle the voltage and current levels as well as be able to reset itself quickly after a transient.The specific data is subject to PDF, and the above content is for reference