PESD5V0S1UJ_PESD12VS1UJ NXP Semiconductors, PESD5V0S1UJ_PESD12VS1UJ Datasheet - Page 9

• Manufacturer Part Number: PESD5V0S1UJ_PESD12VS1UJ
• Description: Unidirectional ElectroStatic Discharge (ESD) protection diodes in a very smallSurface-Mounted Device (SMD) plastic package designed to protect one signal linefrom the damage caused by ESD and transient overvoltage
• Manufacturer: NXP Semiconductors

NXP Semiconductors
8. Application information
PESD5V0S1UJ_PESD12VS1UJ_1
Product data sheet
PESD5V0S1UJ and PESD12VS1UJ are designed for the protection of one unidirectional
data or signal line from the damage caused by ESD and transient overvoltage.
The devices may be used on lines where the signal polarities are either positive or
negative with respect to ground.
The PESD5V0S1UJ provides a surge capability of 890 W and the PESD12VS1UJ
provides a surge capability of 600 W per line for an 8/20 s waveform.
Circuit board layout and protection device placement
Circuit board layout is critical for the suppression of ESD and Electrical Fast
Transient (EFT). The following guidelines are recommended:
1. Place the device as close to the input terminal or connector as possible.
2. The path length between the device 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
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
Fig 9.
ground loops.
vias.
Application diagram
Unidirectional ESD protection for transient voltage suppression
PESD5V0S1UJ; PESD12VS1UJ
Rev. 01 — 3 June 2009
line to be protected
(positive signal polarity)
unidirectional protection of one line
DUT
GND
line to be protected
(negative signal polarity)
006aab251
DUT
GND
© NXP B.V. 2009. All rights reserved.
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