MLVA06V09C210-R Circuit Protection

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TVS - Varistors, MOVs, are widely used in electronic circuits to protect against damaging effects of transient voltage. MLVA06V09C210-R is a type of TVS specifically designed to be compatible with standard TO-220 package. This component’s key features and working principle are detailed in the following paragraphs.

The MLVA06V09C210-R is designed to be used as effective overvoltage protection for circuits in automotive, industrial and residential applications. Its TO-220 package, with standard 6mm mounting hole spacing, allows this device to be easily mounted onto circuit boards. This component’s features and circuit protection include:

• Ultra-low on-state resistance (<0.1 ohms), enabling high current flow.
• Industry-standard 6mm mounting hole spacing.
• Tolerance levels up to 675 volts.
• ESD protection up to 15KV.
• Protection against ESD, EMC, lightning, surge, etc.

The working principle of MLVA06V09C210-R lies in its thermal and electronic design. This high-performance device consists of an NTC thermistor (negative temperature coefficient) and a thermal circuit breaker. During normal operation, the thermistor acts as a current-limiting device, limiting the current flow of the device. When an overvoltage event occurs, the thermistor’s negative temperature coefficient causes the resistance of the thermistor to increase dramatically. This affects the voltage drop across the device, raising the voltage threshold at which the device will trip. Additionally, a metal oxide varistor is also incorporated in the design to provide additional ESD and EMI protection.

When the voltage threshold is exceeded, the thermal circuit breaker opens, allowing the voltage to drop. This absorbes the excess energy and protects against potential damages to the electronic components. After a short period of time, the device resets and the thermal circuit breaker closes, restoring the device to its normal operating condition.

In conclusion, MLVA06V09C210-R is a type of TVS specifically designed to be compatible with standard TO-220 package. Its features include ultra-low on-state resistance, industry-standard 6mm mounting hole spacing, tolerance levels up to 675 volts and protection against ESD, EMC, lightning and surge. The working principle of MLVA06V09C210-R is based on its thermistor and thermal circuit breaker, which protect the circuit from voltage transients beyond the prescribed threshold.

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