Ethernet
Power Contact and Surge Protection
RJ-45
TBU-DT085-200-WH
TBU-DT085-200-WH
TBU-DT085-200-WH
TBU-DT085-200-WH
+B
-B
+A
-A
+C
-C
+D
-D
Gigabit
Ethernet
Transceiver
CDSOT236-0504C
CDSOT236-0504C
Quad
Transformer
e schematic above illustrates the application protection and does not constitute the complete circuit design.
Customers should verify actual device performance in their specic applications.
PT61020L
Quad Transformer
TBU-DT085-200-WH
CDSOT236-0504C
SOLUTIONS
COPYRIGHT© 2011 • BOURNS, INC. • 1/11 • e/CPK1101 • “PortNote” is a trademark of Bourns, Inc.
“Bourns” and “TBU” are registered trademarks of Bourns, Inc. in the U.S. and other countries.
Solution Products
PN-DESIGNKIT-23
Design Kit
Asia-Pacific: Tel +886-2 256 241 17
Fax +886-2 256 241 16
Bourns® PortNote™ solutions provide protection
recommendations for typical port threats.
For more information, go to:
www.bourns.com
or email: protection@bourns.com
Americas: Tel +1-951 781-5500
Fax +1-951 781-5700
Europe: Tel +41-(0)41 768 55 55
Fax +41-(0)41 768 55 10
Compliance
Telcordia GR-1089-CORE Lightning and Power
Contact and IEC 61000-4-2 Level 4 ESD.
Alternate Recommendations
Other PortNote™ Solutions:
• Ethernet: ESD Protection
• Ethernet: PoE Protection
• Ethernet: ESD and Surge Protection
Benefit
e TVS diode array and TBU® device combination
provides power contact and surge protection without
impairing the Ethernet signal.
Objective
Ethernet interfaces are digital signals
operating on a 125 MHz clock. Exposed
ports may require protection against
induced lightning and power contact
events.
Solution
1 Quad Transformer: PT61020L
2 TVS Diode Arrays: CDSOT236-0504C
4 TBU® Devices: TBU-DT085-200-WH
