VG181265U131DP Circuit Protection

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A varistor is a voltage dependent non-linear resistor, also known as a Voltage Dependent Resistor (VDR). VG181265U131DP is a type of Varistor. It is an unpacked single-layer varistor coated with a conformal coating of tin-zinc and constructed with a 130 V maximum continuous working voltage, two level of transient peak output power at 8/20 μs (2.4/1.0kA respectively) and a rated operating temperature range of -40˚C to +125˚C. This voltage dependent resistor is normally used for transient suppression, overvoltage protection on DC/DC converters, as well as providing a lightning arrestor and protection from transient spikes in power.

VG181265U131DP is a TVS (Transient Voltage Suppressor) device which is designed to provide effective protection to sensitive electronic components against electrical transients, voltage surges, and energy spikes that could potentially damage them. The device provides high surge-handling capability, with a peak pulse current rating of 5400A at 8/20μs. The device has a very low clamping voltage, making it ideal for protecting sensitive components from voltage transients. It also features an integrated self-restoring fuse which prevents additional damage in the event of multiple transients.

The VG181265U131DP is designed to protect against very high energy voltage spikes that occur during an electrical or electro-magnetic surge or collision. A typical application is a surge protector for use on unshielded automotive cabling, in order to protect circuits from the effect of an electro-magnetic pulse generated due to accidental contact with the vehicle\'s chassis. The device also provides lighting protection, as it is designed to absorb any voltage spikes that result from lightning strikes.

The working principle of VG181265U131DP TVS - Varistors, MOVs is that when an overvoltage occurs, the varistor material within the device becomes an efficient voltage dependent resistor (VDR). This material has a non-linear V-I characteristic, meaning the voltage across the varistor is proportional to the current. When a voltage transient occurs, the device responds and clamps the voltage at a certain level determined by the V-I characteristic of the varistor material. This prevents further damage from occurring due to the voltage transient.

The VG181265U131DP provides an ideal solution for over-voltage and surge protection in many applications in industrial, automotive, communications, consumer, and medical electronics. Its integrated self-restoring fuse prevents the device from being damaged during multiple transients, and its high surge handling capability ensures maximum protection for sensitive components. The device is also extremely compact, making it ideal for applications that require space constraints.

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