V430RA16

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Varistors, MOVs, or Transient Voltage Suppressors (TVSs) are electrical components designed to protect against voltage- or current overload. TVSs, such as the V430RA16, are essential to controlling fast transients and high-frequency noise from entering any electronic system. This article will discuss the application field for the V430RA16, and its functionality and working principle.

The V430RA16 is a surface-mount fixed-voltage voltage-variable Transient Voltage Suppressor (TVS) device, intended for automated placement and soldering. It is designed to protect sensitive electronics from electrical transients across a wide-voltage range. The device provides surge protection from high-voltage, high-power disturbances in volatile environments- and consequently, is being used in a range of applications and industries.

The V430RA16 can be deployed in several automotive, industrial, telecoms, home and communication systems. Examples include automotive applications, including alternator over-voltage, battery reverse polarity, and power feed switch protection; industrial and audio-visual applications, such as air-conditioners, and telecoms and communication systems, and home entertainment systems.

The device consists of a number of low-impedance P-N junctions, which form an active TVS diode. It has an operating temperature range of -55°C to 125°C, and a maximum junction temperature of 175°C. When high voltage is presented to the P-N junctions, the active diode initiates short-circuit current, beginning the TVS switch-on process. The low on-state resistance eliminates stored charge at the P-N junction, thereby minimising reverse breakover leakage. The low junction capacitance also ensures fast, clean clamping of transient voltages.

The V430RA16 also has a limited surge current, typically 0.25A at 8/20μS pulse and 10A for 8 ms impulse. This feature protects against triggering undesired switch contacts, or short-term overvoltage at the device. Furthermore, the active diode maintains an acceptable breakdown voltage over an extremely wide temperature range, making it suitable for harsh and changing climate conditions.

The V430RA16 is UL recognised under Component Recognition Program Guide MF1, which addresses the requirements in accordance with the UL1449 4th Edition Surge Protective Device (SPD) Standard, with the typical voltages of 18V, 24V, and 40V. Also, the device complies with JEDEC standards and is IEC 61000-4-2 (ESD) compliant.

The V430RA16 is a robust solution, designed to protect equipment from a wide range of transients. It has a low capacitance to ensure fast, clean clamping of transient voltages, and a low junction temperature for good thermal stability. Excellent surge-handling capabilities and reliable performance make the V430RA16 a suitable choice for a range of applications, requiring voltage- or current overload protection.

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