V120RA16X2749

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The TVS - Varistors, MOVs, include a range of devices designed to protect circuits from transients produced by lightning, electrostatic discharge, and other sources. V120RA16X2749 is one such transient suppressor, specifically designed for bidirectional multi arrestor applications, and is commonly found in automotive, medical, and other electrical/electronic systems. This article aims to provide an overview of the application fields and working principle of V120RA16X2749, as well as device characteristics and parameters.

Application Field

Due to its bidirectional design, V120RA16X2749 is commonly used for applications that require bidirectional protection. On the automotive side, its widespread applications include protection against electromagnetic fields generated by the starter motor, spark plugs, and fuel injectors, as well as coil windings and ECUs. V120RA16X2749 also offers protection for automotive secondary circuits, such as audio amplifiers, computers and navigation systems, and other electronic devices. The device is also suited to medical applications, providing protection for machines such as scanners, MRI systems, and infusion pumps.

Working Principle

V120RA16X2749 uses a multi-stage arrestor technique for bidirectional protection, comprising a nonlinear metal oxide varistor (MOV) and a bypass element. Together, these two components offer protection against both transients in the power line and those in low-frequency communication lines. This bidirectional protection is achieved by the MOV shunting high-energy transients, dissipating their energy and suppressing voltage peaks, while the bypass element absorbs low voltages pulses and any transients that escape the MOV.

The V120RA16X2749 works by shunting transient voltages that exceed the device\'s rated voltage (up to 16V) to ground. When the transient voltage drops, the bypass element re-establishes the circuit current. This approach ensures that the circuit is isolated from any transients, and avoids disconnecting the load from its power source.

Device characteristics and parameters

The V120RA16X2749 is rated for a maximum voltage of 16V, which is 3x higher than conventional MOVs, and exhibits an excellent transient response, ensuring strong protection. In addition, the device supports an operating temperature range of -55°C to +125°C, making it suitedApplications that require operation in extreme conditions. Moreover, the V120RA16X2749 has an exceptional surge capability of 2,749A (8/20 μs), making it suitable for the harshest transients.

The device also features a compact footprint of 3.0 x 6.3 mm, making it an ideal solution for applications where space is limited. In addition, the V120RA16X2749 is mechanically robust and has excellent moisture and chemical resistance, making it highly durable in harsh environments. In terms of safety, the V120RA16X2749 meets UL1449 4th Edition requirements and is RoHS compliant, so it is well suited for safety-critical applications.

Conclusion

In conclusion, V120RA16X2749 is an excellent bidirectional transient suppressor designed for a wide range of applications, including automotive, medical, and other electrical/electronic systems. It exhibits excellent transient response, high surge capability, and a robust mechanical design. Moreover, it meets relevant safety and environmental standards, making it well suited for safety-critical applications. Therefore, V120RA16X2749 is an ideal solution for applications needing bidirectional protection.

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