MSMLG30A/TR

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Introduction

MSMLG30A/TR is a part of Transil™ TVS – Diodes family from STMicroelectronics. It is a dual bi-directional, or unidirectional, ESD transient voltage suppressor diode, primarily designed to protect electronic devices against static electricity. TVS Diodes provide rated protection against electrostatic discharges with double-side limited voltage and are characterized by their low clamping voltage and fast response time. The MSMLG30A/TR is a single component designed to protect two lines from ESD transients at the same time.

Application fields

The MSMLG30A/TR provides protection for a wide range of sensitive electronics and high-end applications, including:

• Medical equipment
• Point-of-Use application
• Data processing equipment
• Power supplies
• SMPS applications
• Networking components

The MSMLG30A/TR is also ideal for protecting data lines which require IEC 61000-4-2 ESD protection levels, as well as any type of data, communication, and instrumentation lines. In addition, its low capacitance ensures reliable transient protection for high-speed signal lines.

Working Principle

When a transient voltage is applied to the junction of the MSMLG30A/TR, the diode goes into avalanche breakdown. This causes the diode to act as an open circuit, preventing any further current from flowing. To ensure quick response and high reliability the device features an internal impedance matching network which permits a fast response time of less than 20ns. By using this high-speed breakdown mechanism, the MSMLG30A/TR can protect wide voltage ranges of sensitive equipment from transient voltage spikes without causing any harm to the connected circuitry.

The device also features a characteristic which allows it to operate in a “cold condition”, meaning that the voltage spike must exceed a certain threshold level in order to activate the breakdown mechanism. This means that the MSMLG30A/TR is capable of withstanding high energy ESD pulses up to 8kV without causing any damage to the protected circuit.

Conclusion

The MSMLG30A/TR is a highly reliable and cost-effective solution for ESD protection, providing superior performance in a small form factor. Its features make it an ideal choice for protecting sensitive electronic devices from ESD transients while maintaining high agility and fast response times. Additionally, its low capacitance ensures that the protected circuitry is not disrupted even at high signal frequencies.

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