Littelfuse – Surface-mount broadband protection thyristors minimise trace layout routing (SDP SOT23-5)

Latest from Littelfuse is news of the development of a new series of broadband protection thyristors, designed for use in the tertiary or line driver side protection position for ADSL2 and VDSL2, 30MHz bandplan of VDSL2+ applications and general I/O protection functions.

Ideal for low capacitance over-voltage protection, the SDP Series SOT23-5 SIDACtor protection thyristors do not require the use of a bias voltage and offer protection robust enough for use in the chip-side position behind the coupling transformer. Their back-to-back configuration provides symmetrical ESD protection for data lines and can be used when AC signals are present.

The SDP SIDACtor Series in the SOT23-5 package provides a minimum footprint solution seen as ideal for use in high-density card designs, where space is at a premium. The flow-through design of the SOT23-5 package minimizes PCB trace layout routing, while the device’s four different stand-off voltage values offer compatibility with a variety of line drivers. The device’s low capacitance and low insertion loss make it compatible with ADSL2 and VDSL2, and the 30MHz bandplan of VDSL2+.

The SIDACtor SDP SOT23-5 Series offers an ideal surge protection solution for manufacturers and designers of VDSL, ADSL, Access, Central Office, and Customer Premise modems and gateways who need tertiary or IC side line driver chipset protection. In addition to electrical performance superior to competing thyristors, it offers circuit designers opportunities to upgrade the circuit protection of existing projects in mass production within the existing design footprint or to provide more robust protection for future projects than competing solutions can allow, says the company.