USBQNM50424CE3 (#349172)

This Transient Voltage Suppressor (TVS) has a 24V standoff voltage and is assembled in a QFN143 package which

is compatible (pin for pin) with the SOT-143 package. The configuration gives protection to 1 bi-directional data or

interface line. It is designed for use in applications where protection is required at the board level from voltage

transients caused by electrostatic discharge (ESD) as defined in IEC 61000-4-2 (±30kV), electrical fast transients

(EFT) per IEC 61000-4-4 (±8kV) and effects of secondary lightning.
These TVS arrays have a peak power rating of 500 watts for an 8/20 ?s pulse (figure 1). This array is suitable for
protection of sensitive circuitry consisting of TTL, CMOS, DRAMs, SRAMs, HCMOS, HSIC microprocessors,
UNIVERSAL SERIAL BUS (USB) and I/O transceivers. The USBQNM504xxC product provides board level protection
from static electricity and other induced voltage surges that can damage or upset sensitive circuitry.This particular
device is aimed specifically at MRI application due to the absence of ferrous elements in the metal lead frame.