1KSMB47AHM4G Circuit Protection

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TVS – Diodes are components used in electronics to protect circuits from transients, or momentary surges in the power line voltage. The 1KSMB47AHM4G device is a 5.0 A, unidirectional, SMB transient voltage suppressor designed for power line and telecommunication line protection applications. It is specifically designed to protect sensitive semiconductor components from voltage spikes often caused by lightning strikes and system spikes.

The key feature of the 1KSMB47AHM4G TVS – Diode is its 60V potential breakdown rating. It features low capacitance in order to provide high-speed clamping action and a high degree of transient protection. The device provides ESD (Electrostatic Discharge) protection up to 15kV. The working voltage range is 6V – 60V, with the peak power dissipation of up to 400W.

The 1KSMB47AHM4G is widely used in many applications such as vehicular control unit assemblies, instrumentation systems, low voltage power supplies, AC/DC converters, and many other automotive, industrial, and telecom systems. The SMB type of diode has a physical construction similar to the DPAK package. It is designed in such a way that it can be soldered in a right angle to the circuit board or to an SMT (Surface Mount Technology) module.

The working principle of the 1KSMB47AHM4G is based on its Zener diode construction. The diode consists of a metal oxide semiconductor structure, which is surrounded by two electrical contacts connected to the anode and cathode. The device works by providing a controlled avalanche breakdown of the junction, or in other words, a voltage breakdown at a specified voltage point. This breakdown point is determined by the doping concentration of the semiconductor material. When a voltage above the specified breakdown point is applied, the current increases exponentially and the device will dissipate its energy in the form of heat.

In summary, the 1KSMB47AHM4G is a type of transient voltage suppressor diode designed to protect circuit boards and other sensitive semiconductor components from voltage surges and lightning strikes. It features a high voltage breakdown rating of up to 60V and can clamp transients in less than 5 nanoseconds. Furthermore, it is widely used in many automotive, industrial, and telecom systems due to its efficiency and reliability.

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