MMAD1109/TR13

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TVS - Diodes are a type of electrical component used in electronic circuits to limit voltage transients. The MMAD1109/TR13 is a specialized transient voltage suppressor (TVS) that is designed to protect sensitive electronic components from electrical transients in power and signal lines. It is an integrated device composed of a Zener diode, a junction rectifier, and a transient voltage clamp, designed to clamp damages from fast rising transients such as EFT and lightning. In addition, the MMAD1109/TR13 is designed to operate with a 0V-3.5V supply and provide protection from EMI/RFI.

Applications

The MMAD1109/TR13 is designed for applications that require high reliability and performance, such as automotive and industrial electronics, power systems, consumer electronics, and communication systems. It provides transient voltage protection for sensitive components that are exposed to EFT and lightning surges, while providing clamped voltage protection for overvoltage protection and EMI/RFI protection. It is also designed to provide overvoltage protection from AC power line surges. The device also provides protection to components from excessive current or voltage due to miswiring.

Working Principle

The MMAD1109/TR13 is a passive, two-line TVS diode designed to protect sensitive electronic components from transient overvoltages due to EFT, surge, or lightning. The design utilizes a combination of Zener diode, junction rectifier, and transient voltage clamp to provide a low-impedance path for transient current. During an overvoltage event, the Zener diode starts to conduct current. As the voltage increases over time, excess current is diverted to the junction rectifier which provides protection to the protected circuit. The transient voltage clamp provides clamped voltage protection, limiting the peak voltage to a safe level.

The MMAD1109/TR13 is designed to operate over a wide temperature range from -55°C to +125°C and has a total capacitance of 8pF. It has a low current capability, with a nominal current of 0.250A. It also has a low input capacitance of 0.6pF, which helps to reduce noise. The device is also designed with a fast response time of 1ns, allowing it to quickly respond to a transient overvoltage event.

Conclusion

The MMAD1109/TR13 is an advanced transient voltage suppressor (TVS) designed to protect sensitive electronics from transient overvoltages caused by EFT, surge, or lightning. It uses a combination of Zener diode, junction rectifier, and transient voltage clamp to provide a low-impedance path for transient current. It has a wide operating temperature range, low input capacitance, a fast response time, and a total capacitance of 8pF. The MMAD1109/TR13 is suitable for applications that require high reliability and performance, such as automotive, industrial, and communication systems.

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