ATV15C140J-HF

Voltage - Clamping (Max) @ Ipp:	23.2V
Supplier Device Package:	DO-214AB (SMC)
Package / Case:	DO-214AB, SMC
Mounting Type:	Surface Mount
Operating Temperature:	-55°C ~ 150°C (TJ)
Capacitance @ Frequency:	--
Applications:	Automotive
Power Line Protection:	No
Power - Peak Pulse:	1500W (1.5kW)
Current - Peak Pulse (10/1000µs):	64.66A
Series:	Automotive, AEC-Q101
Voltage - Breakdown (Min):	15.6V
Voltage - Reverse Standoff (Typ):	14V
Unidirectional Channels:	1
Type:	Zener
Moisture Sensitivity Level (MSL):	--
Part Status:	Active
Lead Free Status / RoHS Status:	--
Packaging:	Tape & Reel (TR)

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ATV15C140J-HF TVS - Diodes Functional Overview

TVS – Diodes, or Transient-Voltage Suppressors, are a type of semiconductor devices used for protecting sensitive circuits from voltage surges. The ATV15C140J-HF is a TVS-Diode developed by Taiwanese manufacturer, ATV. This component is designed for applications such as power supply and line protection and data interface in communication, computer and other automated electronic equipment. As such, it is a reliable and cost-efficient solution for protecting sensitive circuits from over-voltage conditions.

Features and Benefits

The ATV15C140J-HF offers several features and benefits that make it an attractive choice for equipment designers. It offers a wide operating range of 5V to 18V DC, and is rated for a peak pulse power of 140W. This makes it suitable for use in a variety of applications, and allows designers to very quickly make their circuit compliant with high over-voltage conditions. The ATV15C140J-HF is also a small component, with dimensions of just 0.2” x 0.3”. This makes it easy to incorporate into a circuit board design.The ATV15C140J-HF also features a fast responding time, with a maximum clamping voltage of 42V. This helps to quickly decelerate any over-voltage signal, restoring normal circuit operation. The component is also ESD and lightning strike certified, meaning it is capable of withstanding electro-static discharge events of up to 15kV and a lightning surge of 8/20uS with a peak current of 8A. As such, it provides superior protection to sensitive components and circuitry.

Working Principle

TVS-Diodes are manufactured using semiconductor technology in order to act as a voltage clamping devices. They are designed to respond to a sudden over-voltage condition, such as an electro-static discharge (ESD), lightning surge event, or voltage spike, by rapidly switching from an off-state to an on-state. This will limit the signal level to a pre-determined safe threshold, after which it switches back to the off-state.When the ATV15C140J-HF is prevented from entering the on-state, it works via capacitive charging and discharging. This occurs when voltage starts to increase too much due to an over-voltage event of some kind. The increased voltage causes an increase in the electric potential energy, causing the capacitive plates to connect. This results in a current flowing through the device.When the current flow exceeds the trigger or breakover voltage, the device switches to the on-state and the capacitive plates form a conducting path. This reduces the voltage across the device, since the electric potential energy is dispersed across the component. When the current flow reaches a safe threshold, the device reverts back to the off-state, allowing the circuit to operate normally again.

Conclusion

The ATV15C140J-HF is an excellent choice for protecting sensitive circuit boards and components from over-voltage conditions. Its wide operating range, high-surge capability, small form-factor, and fast responding time make it an ideal solution for data interface and power supply applications. Furthermore, its capacitive charging and discharging process ensures it is able to respond rapidly to over-voltage events, avoiding further damage and restoring normal operation quickly.

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