TVS Diodes
Tech Notes
Products & Technologies
TDK Corporation (TSE:6762) introduces a sample kit (B74999T9999M099) consisting of ten different types of ultra-compact TVS diodes. Five of them belong to the general-purpose GP series, which protects against overvoltage on applications such as smartphones, tablets, notebooks, wearables, and network components; five others belong to the high-speed ULC series, which are tuned for particularly sensitive high-speed interfaces (e.g., USB-C, Thunderbolt, HDMI, Display Port, MIPI, FireWire, DVI, S-ATA, or SWP/NFC). These protection diodes are available in the ultra-compact packages WL-CSP01005 (400 x 200 μm) and WL-CSP0201 (600 x 300 μm).
TDK Corporation (TSE:6762) presents new series of extremely compact TVS diodes with parameters matched to the various ports of the USB-C port as well as other high-speed interfaces. TVS diodes with very low parasitic capacitance values and low clamping voltage are required especially for the high-speed ports (Tx / Rx) of USB-C, which operate at up to 40 Gbit/s with USB4 version 1. The B74111U0033M060 and B74121U0033M060 types are suitable for this purpose, with very low capacitance values of 0.48 pF and 0.65 pF at 1 MHz, respectively, which means that signal integrity is not compromised. The clamping voltages are only 3.8 V or 3.9 V with an ITLP of 8 A. The protection devices are designed for ESD discharge voltages of up to 15 kV. These TVS diodes are manufactured in the extremely compact WLCSP 01005 and WLCSP 0201 packages and are extremely flat with heights of 100 µm and 150 µm respectively. This means that the TVS diodes can also be integrated into USB-C SIP modules.
Applications & Cases
Universal Serial Bus (USB) is a well-established industry standard that has been in place for more than 20 years, defining the serial communication protocol and the connectors, cables, and chargers for battery-powered rechargeable portable devices. With each updated version of the USB, protocol data rates have continuously increased over the years. Today, we have USB4® protocol, with up to 40 Gbps data rates. Followed by the recently released USB Power Delivery (PD) charging protocol. This development meant a reduction in the time required for charging any peripheral device via USB plug, even though the battery capacities of peripheral devices have been increasing. The latest market developments pushing the technology trends to support requirements have been led by manufacturers’ offerings, followed by attempts to standardize the equipment used. One of the widely used solutions that combines the above requirements is the USB Type-C® connector, which supports up to 100 W power supply option.
The demand for higher data rates at the edge has increased significantly. The adoption of cameras and video system has increased driven by the reduced footstep of these systems and their usage for safety, security and quality applications. Other systems like high-speed data logging devices, embedded web servers and monitoring systems require a timely data transmission.
Ultra-slim TVS Diodes: Highly effective ESD protection for miniaturized ICT solutions
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Related Information
TDK Product Features
Transient voltage suppression (TVS) diodes are components for the protection of voltage sensitive components from electrostatic discharges (ESD). Available in chip scale packages of EIA 01005 and EIA 0201 TVS diodes by TDK are especially characterized by its ultra-slim and compact package, which makes them the ideal solution for circuit protection in applications with tight space requirements. They are designed, in particular, for consumer electronics applications demanding miniaturized package solutions like smartphones, tablets, wearables, true wireless headphones or hearing aids.
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