SMAJ90CA

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TVS-diodes are an important component, used to protect different devices and applications against electrical transients. SMAJ90CA is one of the type of TVS-Diodes, widely used in various applications. This article discusses the application field and working principle of SMAJ90CA.

SMAJ90CA is definitely one of the most common types of TVS-diodes. It is designed to protect against voltage transients exceeding the allowable voltage range. It combines an excellent surge capability and low clamping voltage for cost effectiveness. This type of diodes in particular has a wide array of industries. It can be found in industrial machinery, telecommunications, suitable for automotive and computer applications.

The low capacitance of SMAJ90CA provides effective protection against high-frequency pulse interference. Its impressive peak pulse power handling provides protection from high energy transients such as those resulting from inductive load switching, lightning strikes and electrostatic discharge. In addition, its low clamping voltage ensures that it can handle high surge current capabilities without compromising system performance.

When it comes to its working principle, SMAJ90CA utilizes a double diode structure consisting of two PN junction diodes connected in series, which is reverse-biased. When subjected to a transient or surge, the junction capacitance is charged-up and the surge is then clamped across the diode structure. This limits the transient voltage to the breakdown voltage of the TVS-diode. This action dissipates the transient energy and safeguards the protected device from electrical damage.

In conclusion, SMAJ90CA is one of the many types of TVS-diodes, with wide application field - suitable for automotive and computer applications, telecommunication, industrial machinery and more. Its high surge capability and low clamping voltage, as well as low capacitance, provides effective protection against high-frequency pulse interference. Its working principle is based on the double diode structure, which is reverse-biased in such a way that any transient or surge is clamped across the diode limiting it to the breakdown voltage of the TVS-diode, protecting the protected device from electrical damage.

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