ATV15C191JB-HF Circuit Protection

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TVS (transient voltage suppressor) diodes are widely used in electronic circuitry to protect against transient high voltages. TVS diodes are typically used to protect against overvoltage in power surge and other applications. The ATV15C191JB-HF is a unidirectional TVS diode designed to protect low power circuits from overvoltage transients. It is designed to withstand up to 15A peak current and has a breakdown voltage (clamping voltage) of 191V.

The ATV15C191JB-HF is typically used for overvoltage protection in automotive electronics, with applications in fuel injection systems and onboard sensors. It is also used to protect against overvoltage arising from reverse battery connections and power supply surges in general consumer electronics. The device features an ultra-low capacitance of 0.4pF, making it suitable for use in high frequency data lines.

The working principle of the ATV15C191JB-HF is simple. The diode is designed to clamp current and voltage to a specified level when a reverse voltages is applied. The diode will begin to conduct current when the applied voltage reaches its breakdown level. As current increases, the voltage begins to decrease until it reaches the clamping voltage, which is the voltage level at which the device can conduct without breakdown. Current is then limited to the reverse current limit, and the voltage is maintained at the clamping voltage.

The ATV15C191JB-HF is designed to provide maximum power dissipation in a wide temperature range (-55°C to +125°C). It also has a low reverse leakage current and a fast reverse recovery time of 20ns. The device features a high surge capability of 1.5A at 10x1000us. The ATV15C191JB-HF is available in a ceramic surface mount package and is RoHS compliant.

In conclusion, the ATV15C191JB-HF is a unidirectional TVS diode designed to protect low power circuits from overvoltage transients. It is typically used for overvoltage protection in automotive electronics and general consumer electronics applications. The device features an ultra-low capacitance of 0.4pF, making it suitable for use in high frequency data lines. It also has a low reverse leakage current and a fast reverse recovery time of 20ns. The ATV15C191JB-HF is available in a ceramic surface mount package and is RoHS compliant.

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