SESD0402P1BN-0450-090

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TVS (Transient Voltage Suppressor) Diodes are important protection components for surge and ESD (electrostatic discharge) events in electrical circuits. SESD0402P1BN-0450-090 is a common diode used for protecting circuits from overvoltage and transient surges caused by ESD and lightning strikes. This article will discuss the application field and working principle of SESD0402P1BN-0450-090.

The SESD0402P1BN-0450-090 is an ideal diode for transient voltage suppression due to its low clamping voltage, high clamping current, and high surge capability. It is a 4-Pin SOD-323 package diode with a maximum breakdown voltage of 4.5V and a maximum surge capability of 10A. It has a low capacitance of 0.45pF and a low leakage current of 10nA.

SESD0402P1BN-0450-090 is commonly used in automotive electronic circuits, industrial control systems, power supplies, audio-visual electronics, and communications systems. Due to its low clamping voltage, high surge capability, and wide operating temperature range, it is also suitable for applications requiring high voltage protection and transient surges.

Working Principle: SESD0402P1BN-0450-090 utilizes the properties of two diodes connected in reverse-parallel. When a high voltage occurs on the circuit, the diode will become forward-biased and the voltage will be limited to a safe level by the breakdown voltage of the diode. The high surge current is then limited by the series combination of the two diodes, protecting the circuit from possible damage caused by the surge currents.

The SESD0402P1BN-0450-090 also acts as a very low impedance path across the transient voltage, clamping it as soon as it appears. This diode is fast enough to react to the transient voltage within a few nanoseconds, thus providing effective protection against ESD pulses and lightning strikes.

In conclusion, SESD0402P1BN-0450-090 is an effective diode for transient voltage suppression. It has a low clamping voltage, high surge capability, wide operating temperature range, and low capacitance. It is commonly used in automotive electronics, industrial control, audio-visual electronics, and communications systems. The diode combines two diodes in reverse-parallel and clamps the transient voltage swiftly, providing efficient protection to the circuit before any damage can occur.

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