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TDK offers extremely compact TVS diodes for ESD protection
Industry News- May 29,23
TDK Corporation 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. The B74111U0033M060 and B74121U0033M060 types are suitable for this purpose, with very low capacitance values.
TDK Corporation 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 3.8V or 3.9V with an ITLP of 8A. 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.
The new types with maximum DC voltages of up to 5.5V are suitable for the conventional USB 2.0 data bus of USB-C (D+/D-). Their clamping voltages are 3.9V and 4.0V with an ITLP of 8A. They are also designed for a high ESD discharge voltage of up to 15kV. The housing designs and heights correspond to the types already described.
Power lines VBUS (CC/SBU) can be used to transmit a maximum of 100W at voltages of up to 20V and currents of 5A. Here, too, safe ESD protection is essential. For this purpose, TDK offers the two new types B74121G0160M060 with a maximum working voltage of 16V and B74121G0200M060 with a value of 20V and clamping voltages of 23V and 27V, respectively, at an ITLP of 8A. They feature capacitance values of 6pF and 5pF, respectively, with high linearity and are rated for ESD contact discharge voltages of 15kV. They are also designed in the compact WLCSP 0201 form factor with a height of 150µm.
In total, up to three different types of TVS diodes are required for complete ESD protection of USB-C due to the different requirements. In addition to USB-C, the ESD protection components can also be used for other high-speed interfaces such as Thunderbolt, HDMI, Display Port, FireWire, DVI, S-ATA or SWP/NFC. Typical end devices are smartphones, tablets, notebooks, wearables, or network components.
The main application of the products is with high-speed interfaces such as USB-C, Thunderbolt, HDMI, Display Port, FireWire, DVI, S-ATA or SWP/NFC and in smartphones, tablets, notebooks, wearables, or network components.
The TVS diodes feature low clamping voltages, such as 3.8V at ITLP of 8A, capacitance values of minimum 0.48pF, compact package shapes of WLCSP 01005 and WLCSP 0201, extremely flat heights of 100µm or 150µm, and high robustness against ESD contact discharge voltages of 15kV.
TDK Corporation
B74111U0033M060
B74121U0033M060
TVS diodes
VBUS (CC/SBU)
Thunderbolt
HDMI
Display Port
FireWire
DVI
S-ATA
SWP/NFC
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