SMF4L9.0A Circuit Protection

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The SMF4L9.0A is a transient voltage suppressor (TVS) diode, ideal for protecting sensitive components and circuits from high voltage transients and overvoltage surges. The SMF4L9.0A features an IEC 61000-4-2 Level 4 ESD protection rating that can withstand up to 8 kilovolts of electrostatic discharge protection. It also offers a maximum clamping voltage of 10.2 Volts at 8 Amps and is rated for an operating temperature range from -55°C to 125°C.

The SMF4L9.0A is comprised of two sets of metal-oxide-semiconductor (MOS) components, a diode, and an integrated shield. The diode is designed to quickly and efficiently absorb ESD energy by providing a high impedance path to ground. The integrated shield is designed to shield the diode and other components from ESD energy, allowing the components to work more reliably with less ESD energy damage. The shield also provides a low impedance path to ground, which allows the diode to receive ESD energy with greater capability.

The SMF4L9.0A provides excellent performance in applications that require reliable protection from ESD, lightning, and AC surge events. It is typically used in automotive and consumer electronic circuits, such as PCs and portable devices. In these applications, the SMF4L9.0A can provide protection from surges up to 2,000 Volts and can dissipate ESD energy up to 76mJ. The device also offers reverse standoff voltage of 4.2 Volts, making it suitable for low voltage applications.

In use, the ESD clamping element of the SMF4L9.0A is designed to absorb and dissipate transient energy that is transmitted to the protected components. This allows the protected components to remain in their normal operating state during an ESD transient event. The device supports both continuous and peak surge current for extended protection of the protected components. The device is also designed to be used in a low-profile installing, allowing it to be easily mounted on PCBs.

The SMF4L9.0A is a robust and reliable ESD protection diode that offers excellent protection in a variety of applications. It is designed to effectively protect against surges up to 2,000 Volts and to dissipate energy up to 76mJ. It can work with both continuous and peak surge current and has a low profile design, making it suitable for a wide range of applications.

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