VTVS15GSMF-M3-08 Circuit Protection

TVS - Diodes is a type of surge protection device (SPD) often used in electronic designs. The VTVS15GSMF-M3-08 is a specific device within this category, and has application fields and a working principle that requires explanation.

Application Fields

The VTVS15GSMF-M3-08 is part of a surge protection series consisting of a metal oxide varistor (MOV), fast-reacting silicon diode, and filters designed to reduce the radiation burst due to an intense electric field. It is designed to protect against voltage and frequency transients generated by either internal or external sources.

Optimal performance is seen when the device is mounted on the same printed circuit board (PCB) as the electronics it is protecting. This reduces both contact resistance and inductance, so the device performs optimally. The device is rated for both DC and AC use, with the response time being less than 60ns for a single voltage transient, and less than 130ns for multiple voltage transients.

Working Principle

The working principle of the VTVS15GSMF-M3-08 is based on the semiconductor nature of the MOV. When an over-voltage transient occurs, the MOV responds by allowing current to flow from the input to the output path of the device. This diverts the transient energy away from the protected circuitry. The diode portion of the device then captures any remaining transient energy.

The device is dynamic in nature, and responds differently to voltages of different sizes and frequencies. The dynamic response time varies depending on the magnitude of the transient. Smaller transients will result in a quicker response from the MOV, which can protect the PCB from damage as the voltage starts to rise.

The filtered section of the device is designed to reduce the amount of radiation burst due to an intense electric field. This is achieved by providing an attenuation of the RF and EMI frequencies, preventing them from entering the protected circuitry and negatively impacting performance. This prevents certain types of interference which can have damaging effects on electronic circuitry.

Conclusion

The VTVS15GSMF-M3-08 is part of a series of surge protection devices, specifically designed to protect electronics from voltage and frequency transients. It features an MOV, fast-reacting diode, and filtered section all designed to reduce the impact of transients. The device is designed to be mounted onto the same PCB as the electronics it is protecting, to ensure optimal performance, and to protect against RF and EMI interference.