Ethernet
Power Over Ethernet (PoE)
CDNBS08-PLC03-3.3
CDNBS08-PLC03-3.3
CDNBS04-B08200
CDNBS04-B08200
SMBJ58A
MF-SMDF050
RJ-45 RJ-45
PoE
Power
Supply
PSE PD
Dual
Transformer
Dual
Transformer
4
5
1
4
5
1
6
7
8
6
7
8
e schematic above illustrates the application protection and does not constitute the complete circuit design.
Customers should verify actual device performance in their specic applications.
CDNBS08-PLC03-3.3
CDNBS04-B08200
SMBJ58A
MF-SMDF050
SOLUTIONS
Solution Products
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
IEEE802.3af and IEEE802.11af
IEC 61000-4-2 Level 4 (8 kV / 15 kV)
Alternate Recommendations
Other PortNote™ Solutions:
• Ethernet: ESD and Surge Protection
• Ethernet: PoE Protection
Contact Bourns for PoE+ or Gbit PoE ports.
Benefit
is solution provides protection for POE without
impairing the Ethernet signal.
Objective
Power over Ethernet (PoE) interfaces
combine two Vp-p dierential signals and
nominal 48 VDC power. is solution
provides protection for both the data and
power signals.
Solution
2 TVS Diode Arrays: CDNBS08-PLC03-3.3
2 Rectier Diode Arrays: CDNBS04-B08200
1 Discrete TVS Diode: SMBJ58A
1 Multifuse® PTC: MF-SMDF050
COPYRIGHT© 2010 • BOURNS, INC. • 04/10 • e/CPK1003 • “PortNote” is a trademark of Bourns, Inc.
“Bourns” and “Multifuse” are registered trademarks of Bourns, Inc. in the U.S. and other countries.
PN-DESIGNKIT 2
Design Kit