SMAJ250

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

SMAJ250 is a type of transient voltage suppressor diode (TVS) which aids in the protection of electronic circuits from electrostatic discharge (ESD). It is a bidirectional diode having a reverse breakdown voltage of up to 250 volts. The device is designed to absorb transients from the internal circuit as well as external sources such as lightning strikes. That makes it a suitable choice for a wide variety of applications, including telecommunications, automobiles, personal computing, and other electronic circuits.

As a bidirectional diode, the SMAJ250 has two functioning modes, depending on the polarity of the applied voltage. When a negative transient voltage is applied, the majority of electrons are pushed away from the p-zone into the n-zone, creating a parasitic enhancement mode PNP transistor. This behavior creates a low on-state collector-emitter voltage (Vce) and thus functions like a zener diode. The SMAJ250 clamps negative transients to its Vbr rating (typically 250V).

When a positive transient voltage is applied, holes are injected into the p-zone, creating a sharp reduction in avalanche current and a corresponding rise in voltage. This voltage increase is then clamped by the SMAJ250. In both modes, the SMAJ250 conducts current to ground. The reverse current is limited by the device\'s high value of internal resistance, which ensures the fast protection of the circuit.

The SMAJ250 offers a wide range of features, making it ideal for a variety of applications. It offers superior ESD protection levels, excellent clamp current over a wide range of voltages, and fast clamping response times. In addition, it is capable of operating over a wide temperature range of -55°C to 125°C and has a low leakage current. This makes it suitable for use in automotive, industrial, and consumer circuit protection applications.

The SMAJ250 is also capable of withstanding high surge currents. It has a high peak pulse power capability and can handle a surge current of more than 5kA. This makes it suitable for use in applications such as telecom base stations, which may experience spikes of up to 4kA.

The SMAJ250 has superior performance characteristics, making it suitable for use in a wide range of applications. Its robust construction and superior ESD protection capabilities make it an ideal choice for the protection of electronic circuits from voltage transients. It can be used in a variety of applications from automotive to personal computing.

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