SA36CAHE3/73 Circuit Protection

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TVS - Diodes differentiates from traditional diodes in the way that they can absorb electrical transients with high peak pulse current. This article will discuss the application field and working principle of the SA36CAHE3/73 and provide an insight into these aspects.

The SA36CAHE3/73 is a state of art unidirectional transient voltage suppressor. It stands for 3.6V, 1500W, SMA, SMAHE package. This diode works on the principle of Snap-Back Voltage Clamping to protect wide range of circuits against the damaging effects of over voltage transients. It has a robust construction with a wide operating temperature range making it capable of withstanding punishing surge conditions. The SA36CAHE3/73 offers the highest surge capability in the market with its wide standoff voltage range of 5.3 – 145 volts.

This clamping device offers extremely low leakage current and fast response time. It is used in applications such as power supplies and telecom equipment. The device is also suitable for automotive applications as it is AECQ compliant. It can be used for the suppression of fast, short duration transients in power and signal lines. The SA36CAHE3/73 also finds application in semiconductor protection and secondary circuit protection of motor drive systems.

The SA36CAHE3/73 utilizes a silicon-oxide passivation layer on its stage and trigger interfaces to ensure fast response with repetitive surge. It uses a pure diffusion mechanism to achieve its snap-back voltage feature. The voltage at the threshold point is controlled by the surface potential of the diffusion junction. This surface potential is in turn defined by the oxide passivation layer, the gate thickness and trigger voltage.

The SA36CAHE3/73 utilizes a unique passivation layer that results in a robust construction with a wide operating temperature range. The increased surface area in the diode junction also helps to reduce the clamping voltage of the diode. This results in small-signal transients being clamped more efficiently. The device also exhibits very low leakage current when it is not operated thus protecting circuits against power short circuits.

The device also features a unique low-impedance topology with a narrow schottky depletion region. This helps to reduce the snap-back voltage as well as the current that flows through the diode during the reverse polarity voltage surge. The increased surface area reduces the forward voltage drop and helps to further enhance the robustness of the diode.

In summary, the SA36CAHE3/73 is an outstanding device that offers a wide range of protection against over voltage transients. It has a robust construction with a wide operating temperature range. It utilizes a unique passivation layer to ensure fast response and a narrow schottky depletion region for low-impedance topology. This device is suitable for a wide range of applications such as power supplies, telecom equipment, automotive protection and semiconductor protection.

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