STMicroelectronics ESDCAN03-2BM3Y automotive-qualified transient voltage suppressor

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STMicroelectronics’ ESDCAN03-2BM3Y dual automotive-qualified low-capacitance transient voltage suppressor (TVS) protects CAN and CAN-FD interfaces by delivering high performance in a tiny package.

At 1.1 x 1 mm, the TVS meets the automotive industry’s need for miniaturised and high-performing protection devices for the increasing numbers of high-density ECUs (electronic control units), such as ADAS (advanced driver assistance systems), autonomous driving controllers and automotive gateways. Using the device, designers can save 75% or more of the PCB space needed by conventional TVS in SOT23-3L and SOT323-3L packages, the company says.

The product offers high transient protection with clamping voltage as low as 33 V (8/20 µs at 1 A) and 37 V (transmission-line pulse (TLP) at 16 A). Passing ISO 16750-2 jump-start and reversed-battery tests, the device is also robust, withstanding 15 kV ESD contact discharge (ISO 10605) and, with 3.3 A peak pulse rating, able to handle strong current surges.

On top of CAN and CAN-FD, the line capacitance of just 3.3 pF allows the TVS to protect high-speed and high-data-rate buses such as FlexRay and USB. Such minimal capacitance eases PCB design by allowing extra margin when laying out signal paths.

The maximum junction temperature rating of 175°C allows deployment in locations throughout the vehicle, from the cabin to the engine compartment, with severe mission profiles. With low leakage current of 50 nA at 24 V, the product minimises battery drain when the vehicle is turned off, helping to preserve the state of charge and maximise the driving range in electric vehicle (EV) applications.

For more information: www.st.com/esdcan03-2bm3y.