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Product Summary
Automotive electronics are susceptible to circuit damage from transient voltages (surges) caused by load dumps and switching, as well as electrostatic discharge (ESD). Transient Voltage Suppressor (TVS) diodes are essential for protecting against these abnormal voltages. TVS diodes instantly conduct when a transient voltage exceeding a specified voltage is applied, clamping (suppressing) the voltage and protecting circuits and electronic components. They are particularly fast in response to sudden surges and ESD, making them highly effective against such events.
Bourns' AEC-Q101 compliant products apply the automotive quality standard (AEC-Q101) to these TVS diodes, ensuring high reliability even in harsh environments with a wide temperature range, vibration, and humidity. This makes them suitable for protecting circuits used under severe conditions, such as automotive power lines and communication lines. Bourns also offers a wide range of TVS diodes with different voltage ranges and surge withstand capacities, primarily in surface mount types, to meet diverse needs from power circuits to high-speed signal lines.
Main features
• High reliability due to compliance with the automotive standard AEC-Q101.
- Protects circuits from surges and ESD.
- Responds to sudden abnormal voltages with picosecond-level high-speed response.
• Wide range of power handling capacities from several hundred watts to several kilowatts.
• A wide range of voltage, package, and polarity (bidirectional/unidirectional) options available.
Product lineup
A wide range of products are available, differing in surge withstand capability, voltage range, package, and polarity. You can select the optimal device according to your application and circuit conditions.
Please check the manufacturer's website for details.
AEC-Q101 compliant automotive TVS diode
This page provides an overview of the main components of our product lineup.
■ Surge withstand capability (peak pulse power)
Supports power capacities from several hundred watts to several kilowatts and over 10 kW: Selectable for various applications, from signal lines to power lines.
■ Voltage range
Wide voltage range from a few volts to over 200V: Applicable from low-voltage signal circuits to automotive power lines.
■ Package
We primarily offer surface mount types such as SMA, SMB, SMC, and DO-218: selectable according to mounting conditions and design size.
■ Polarity
Unidirectional / Bidirectional: Selectable depending on the application, such as power lines or communication lines.
Assumed application
• On-board ECU (engine control, body control, etc.)
- Power line protection (to prevent load dumps)
• In-vehicle communication interfaces (CAN, LIN, etc.)
- ESD protection for sensor/I/O lines
Infotainment and in-car electronics
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