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NXP Semiconductors
PESD5V0U2BT
Ultra low capacitance bidirectional double ESD protection diode
7. Application information
The PESD5V0U2BT is designed for the bidirectional protection of two signal lines from
the damage caused by ESD pulses. The PESD5V0U2BT may be used on lines where the
signal polarities are either positive or negative with respect to ground.
line 1 to be protected
line 2 to be protected
PESD5V0U2BT
GND
006aab039
Fig 5. Bidirectional protection of two lines
Circuit board layout and protection device placement
Circuit board layout is critical for the suppression of ESD, Electrical Fast Transient (EFT)
and surge transients. The following guidelines are recommended:
1. Place the PESD5V0U2BT as close to the input terminal or connector as possible.
2. The path length between the PESD5V0U2BT and the protected line should be
minimized.
3. Keep parallel signal paths to a minimum.
4. Avoid running protected conductors in parallel with unprotected conductors.
5. Minimize all Printed-Circuit Board (PCB) conductive loops including power and
ground loops.
6. Minimize the length of the transient return path to ground.
7. Avoid using shared transient return paths to a common ground point.
8. Ground planes should be used whenever possible. For multilayer PCBs, use ground
vias.
PESD5V0U2BT_1
? NXP B.V. 2007. All rights reserved.
Product data sheet
Rev. 01 — 27 March 2007
6 of 11
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