VG181216P400DP Circuit Protection

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TVS - Varistors, MOVs, play an important role in the protection of electronic devices, and VG181216P400DP – a compact, high performance, four-lead, shield leaded Thyristor Surge Protection Device (TSPD) released by STMicroelectronics – is no exception.

VG181216P400DP offers surge protection and ESD (Electrostatic Discharge) immunity for data lines up to 400 W peak power, as defined by the International Standard IEC61000-4-2. It is designed to protect sensitive electronic devices from transients, caused by lightning, load switching, and static discharge.

Designed for an operating temperature range of –55 + 125°C, the VG181216P400DP varistor has a capacitance of 0.64 pF. The four discrete elements that comprise the device are effectively in parallel, making the total capacitance equal to the sum of the visible terminals (4) multiplied by a single capacitance.

VG181216P400DP application fields abound. From automotive use, telecom infrastructure, and industrial automation systems to medical instrumentation, home appliances, and consumer electronics, VG181216P400DP is suitable for a vast range of applications.

The working principle of VG181216P400DP is quite simple, yet highly efficient. The device contains four parallel chip-like elements that absorb excess voltage. These four elements are connected with a mosfet controller which adjusts the voltage threshold and limits the in-rush current, thus limiting the damage caused by transients in protected devices.

Briefly, the voltage adjustment feature of the VG181216P400DP, prevents false activation when a device is first powered up, and helps to ensure that protection is maintained even under extreme loads.

Operating in the sub-nanosecond range, VG181216P400DP can also sustain multiple occurrences of transients. The device is backed with a surge protection guarantee of up to 200A/s at the peak power levels, making it the perfect choice for protecting sensitive and vital components from electrical disturbances.

Thanks to its miniature size – the VG181216P400DP has a package size of 1.6 mm2 -- and robust performance, STMicroelectronics’s VG181216P400DP is the ideal solution for a wide variety of applications.

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