Ultra-low voltage TVS diode portfolio expanded for high-speed consumer interfaces

TDK Corporation has extended its ultra-low clamping voltage TVS diode lineup with three new models in the SD0201 series, tailored for high-speed consumer electronics interfaces. These TVS diodes provide compact protection for USB Type-C, HDMI, DisplayPort, and Thunderbolt connections in smartphones, laptops, tablets, wearables, and networking devices.

Each component comes in a 0201 chip-scale package (CSP), measuring just 0.58mm x 0.28mm x 0.15mm (L x W x H) for space-constrained designs. Having working voltages of ±1V, ±2V, and ±3.6V, the new TVS diodes safeguard sensitive circuits from ESD and transient surges. This means they meet IEC 61000-4-2 standards with ESD discharge robustness up to ±15kV and support surge current handling up to 7A, depending on the variant. Their symmetrical design allows bidirectional protection and, therefore, flexible PCB routing, while very low leakage currents and dynamic resistance as low as 0.16Ω improve application-level efficiency.

The individual components differ in their DC working voltage and parasitic capacitance: the SD0201SL-S1-ULC101 (ordering code B74121U1036M060) has a working voltage of ±3.6V and a parasitic capacitance of 0.65pF, the SD0201-S2-ULC105 (B74121U1020M060) of ±2V and 0.7pF, and the SD0201SL-S1-ULC104 (B74121U2010M060) of ±1V and 0.15pF. A LTspice model library for SEED simulations for TVS diodes is available for download.

The company's new ultra-low clamping voltage TVS diodes are engineered to satisfy the challenges in today and tomorrow's consumer electronics, ensuring reliable performance and safeguarding sensitive electronic devices from damaging transients.

Main applications include high-speed interfaces in smartphones, laptops, tablets, wearables, network communication devices, and other portable devices with tight space requirements.