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Toshiba Releases Low Capacitance TVS Diodes Suitable for ESD Protection for Thunderbolt 3 and other High Speed Signal Lines

2019/10/18Toshiba  Company / Market Trends


October 17, 2019

TOKYO— Toshiba Electronic Devices & Storage Corporation ("Toshiba") today starts shipments of two low capacitance TVS diodes (ESD protection diodes) that support high speed communication standards, such as Thunderbolt™ 3, HDMI® 2.1 and USB 3.1. The new “DF2B5M4ASL” supports a maximum working peak reverse voltage of 3.6V, and “DF2B6M4ASL” supports 5.5V.

Tablets, laptop PCs and game consoles minimize transfer times for video data or large files by using 10Gbps or 48Gbps high speed communication standards. With the increasing miniaturization of the controller ICs used in these high speed communications, ESD tolerances are decreasing, and it is necessary to enhance measures to counter ESD and surges from connectors; their lack can cause critical faults such as communication errors and file damage.

In addition, parts connected to high speed communication lines have a large effect on signals; passive parts on printed circuit boards, such as capacitors and resistors, can distort signal waveforms.

The new products reduces these influences with a lower capacitance suitable for high speed communications. In addition, by optimizing the process, the new products achieve a capacitance (typ.) of 0.15pF, about 25% lower than current products [1]. This helps to realize stable circuits in high speed communications.
・ESD protection for high-speed signal lines (tablets, laptop PCs, game consoles and  augmented reality and virtual reality]equipment, etc.)

・Low total capacitance: Ct=0.15 pF (typ.)
・High electrostatic discharge voltage rating [2]:
   VESD= ±16kV (DF2B5M4ASL)
   VESD= ±15kV (DF2B6M4ASL)
・Small and surface mounting package: SL2 (Package code : SOD-962, 0.62×0.32×0.3mm (typ.))

Main Specifications
                                 (@Ta=25 ℃)


[1] Products in the DF2BxM4SL series
[2] @IEC61000-4-2 (Contact)
[3] @TLP parameters: Z0=50Ω, tp=100ns, tr=300ps, averaging window t1=30ns to t2=60ns
[4] @ Based on IEC61000-4-5 8/20μs pulse

Follow the link below for more on Toshiba’s TVS Diodes (ESD Protection Diodes) line-up.

* Company names, product names, and service names may be trademarks of their respective companies.
Information in this document, including product prices and specifications, content of services and contact information, is current on the date of the announcement but is subject to change without prior notice.

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