With the electrification of the automotive industry, there is a growing need for effective measures to prevent malfunctions caused by electrical noise. This includes protection against electrostatic discharge (ESD) in the nanosecond range and switching surges that can occur in the microsecond to millisecond range. The XCEZ series is designed to suppress system failures resulting from such noise, which can enter the power lines and connectors of various electronic control units (ECUs) in the car.
To facilitate high-density mounting in modern automotive designs, the XCEZ series is housed in an industry-standard, general-purpose SOD-523 package measuring 1.6 mm x 0.8 mm. This compact size reduces the mounting area by approximately 59% compared to the SOD-323 package (2.5 mm x 1.25 mm) used for the existing XCUZ series. This miniaturization is a particular advantage for space-constrained systems.
The XCEZ series, like its predecessor the XCUZ series, utilizes Toshiba's patented Zener process to achieve exceptionally low dynamic resistance. Low dynamic resistance allows surge current to flow more easily to the Zener diode. This enables high surge absorption to prevent damage and system failure, and improves device and circuit protection. For example, the XCEZ5V6 product features a dynamic resistance (RDYN) of only 0.16 Ω (typical).
Furthermore, the new products can provide surge protection for long-duration pulses in the millisecond range, achieving a high maximum allowable Zener surge power of 6 W with a pulse width of 10 ms, thus protecting semiconductor devices against high switching surges and near-DC surges.
The XCEZ series offers a comprehensive range of 20 products with standard Zener voltages from 5.6V to 36V, making them suitable for main power supply lines. Importantly, the series complies with the AEC-Q101 standard, the reliability testing standard for automotive electronic components.
