P4SMA110AHR3G

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TVS (Transient Voltage Suppressor) diodes are electrical components used to protect circuits from voltage spikes, particularly those caused by lightning strikes or electrostatic discharge (ESD). The P4SMA110AHR3G is a Surface Mount TVS diode designed to protect electronic components from up to 110A of transient current, while still allowing the normal signal current to pass.

The P4SMA110AHR3G is typically used in automotive, industrial, medical, and consumer electronics. Automotive applications are popular uses for the P4SMA110AHR3G, and could include protecting against voltage spikes caused by engine ignition, sensor inputs, or general atmospheric conditions. The diode can also be used in industrial applications, protecting electronic components from voltage caused by fluctuations in power from the electrical grid. Medical devices may also use the diode to protect from ESD, as well as power supply concerns. Finally, consumer electronics may use the diode to protect against ESD when connecting to input ports such as USB or HDMI.

The P4SMA110AHR3G is a uni-directional diode, which means it conducts current in only one direction. Its working principle is based on the principle of reverse avalanche breakdown. When connected appropriately in a circuit, the diode exhibits a certain reverse breakdown voltage. When voltage in the circuit rises above this level, the diode “breaks down” and begins conducting current. When conducting, the diode will absorb the excess voltage energy, dissipating it as heat and protecting the rest of the circuit from potential damage.

The diode typically dissipates just a few milli-watts of power. However, as it is designed specifically to absorb voltage spikes, it will dissipate significantly more power when conducting. The diode can absorb hundreds of amperes of transient current and its peak pulse power rating is 2700 W, although this is limited to a brief pulse period, typically a few seconds or less.

The P4SMA110AHR3G is a surface mount device, and typically mounted directly on the circuit board. As such, the mechanical characteristics of the diode are important considerations. The diode is a SMA package type and measures 2.6mm × 1.5mm × 0.8mm, making it small enough to fit into tight places. The device has an operating temperature range between -55C to 125C and a storage temperature range of -55C to 150C.

The P4SMA110AHR3G is an effective device for protecting circuits against transient voltage events. Its small size and wide range of applications make it a popular protection solution in a variety of industries.

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