SMAJ10A Circuit Protection

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The SMAJ10A is a form of transient voltage suppression (TVS) diode designed to protect sensitive electronic components from damage due to high voltage transients. It is designed to clamp voltage at a specified level and protect sensitve electronic components when the voltage is above a certain level. This type of diode is used in a variety of applications, such as in power supplies, surge protections, and signal line protections.

Overview

The SMAJ10A is a small surface-mount diode that features an ultra-low capacitance and fast response time. It is available in an SMAJ package, with a standoff polarity of 10mm. It is designed for use in a broad range of power and voltage protection applications. It features breakover protection of 6.5V (~ (+20%) and a low clamping voltage of 11.6V (~ (+20%). The SMAJ10A also offers a high fast-transient capability, with a maximum pulse current of 400W.

Application Fields

The SMAJ10A is an ideal choice for a variety of TVS protection applications. It is commonly used in high-speed data lines such as USB, HDMI, and other digital applications to protect against incoming transients. It is also useful in low-noise audio systems, where it can help reduce the risk of anomaly due to the occurrence of high voltages on the data lines. Additionally, it can be used for telecommunications systems, such as voice over IP (VoIP), point of sale (POS) devices, and automotive electronics.

Working Principle

The working principle of the SMAJ10A relies on a breakdown effect. When an over-voltage occurs, the diode will be exposed to an increased electric field across its junction, leading to an avalanche breakdown of the junction. As a result, the diode will be able to conduct, although at a higher voltage than the specified rated level. This will help to reduce the voltage and protect sensitive components from damage. Additionally, this type of diode will reduce the peak current levels and reduce the risk of destruction caused by high-level electric transients.

Conclusion

The SMAJ10A is a highly effective and reliable TVS diode designed to protect electronic components from incoming voltage transients. It is an excellent choice for power and signal line protection, and is widely used in a variety of applications. By leveraging its fast-acting breakdown effect, it can help reduce the risk of costly component damage.

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