USBDF02W5 STMicroelectronics, USBDF02W5 Datasheet - Page 4

• Manufacturer Part Number: USBDF02W5
• Description: IC EMI FILTER/LINE TERM SOT323-5
• Manufacturer: STMicroelectronics
• Series: USBDFxxW5r

Specifications of USBDF02W5

• Filter Type: Signal Line
• Mounting Type: Surface Mount
• Termination Style: Surface Mount (SMD,SMT)
• Mounting Style: SMD/SMT
• Package / Case: SOT-323-5
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Inductance: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: 497-3742-2

Application information
2.2
4/11
ESD protection
In addition to the requirements of termination and EMC compatibility, computing devices are
required to be tested for ESD susceptibility. This test is described in the IEC 61000-4-2 and
is already in place in Europe. This test requires that a device tolerates ESD events and
remain operational without user intervention.
The USBDFxxW5 is particularly optimized to perform ESD protection. ESD protection is
based on the use of device which clamps at :
This protection function is split in 2 stages. As shown in
clamped by the first stage S1 and then the remaining overvoltage is applied to the second
stage through the resistor R. Such a configuration makes the output voltage very low at the
V
Figure 5.
Figure 3.
out
Vg
ESD Surge
V
level.
INPUT
V
PP
50
= V
TG OUT
USBDFxxW5 ESD clamping behavior
Measurement configuration
BR
+ R .I
Rg
d pp
TEST BOARD
V
Rd
BR
S1
RF IN
50
Vinput
USBDFxxW5
R
Figure 4.
Voutput
Insertion loss (dB)
-10
-20
-30
0
1
Figure
USBDFxxW5 attenuation
curve
S2
Rd
V
10
BR
5., the ESD strikes are
F (MHz)
100
USBDFxxW5
protected
Device
1000 3000
to be
Rload