VDRS05C420BSE

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The VDR S05C420BSE is a surge protection component from Bourns Inc. It is a bidirectional transient voltage suppressor (TVS) and current limiter composed of Mov varistors. When exposed to surge conditions, these components protect a circuit by diverting the surge energy away from the sensitive components of the system, allowing system operation to continue during the surge and then resetting itself.

Varistors are the key components of TVS-based surge suppressors. They are designed to provide overvoltage protection for circuits and are made from zinc oxide materials and connected in series or parallel with other elements to protect circuits from overvoltage. Compared to TVS diodes, varistors provide better performance and protection over a wider range of applications. The VDR S05C420BSE is a bidirectional varistor surge protection device. It operates over a frequency range of 0-300kHz with bidirectional protection and its operating temperature range is -55°C to 125°C. It is also compliant with the UL1449 3rd edition standards for surge suppression.

The VDR S05C420BSE is suitable for a range of applications including low-voltage circuits, automotive DC/DC converters, power supplies, fuel injectors, motor controllers, industrial controllers and other sensitive electronics systems. In automotive applications, these TVS varistors provide enhanced protection against electrical transients and overvoltage, preventing damage to sensitive circuits and ensuring reliable operation of the entire system.

In terms of its working principle, the VDR S05C420BSE uses a bidirectional clamping arrangement. This means that when exposed to overvoltage and surge conditions, the varistor triggers and starts to conduct current, diverting the surge energy away from the main circuit. As this happens, the clamping voltage reduces and results in lower current passing through the circuit. Once the surge is over, the varistor restores back to its normal state and allows for normal operation of the system.

Overall, the VDR S05C420BSE is a robust bidirectional TVS varistor surge protection device that is suitable for a wide range of automotive and industrial applications. When exposed to surge conditions, it diverts the energy away from the sensitive components of the system, allowing it to operate reliably and ensuring circuit protection.

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