Ethernet
10/100 Base-T Power over Ethernet (PoE) PD Unit Protection
Mode B Power
SMBJ58A
RJ-45
PD
SM51108EL
CDSOT236-0504C
CDNBS04-
B08200
4
5
1
6
7
8
3
2
+
-
Mode A Power
Ethernet
PHY
CDNBS04-
B08200
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.
CDSOT236-0504C
CDNBS04-B08200
SMBJ58A
SM51108PEL
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
EMEA: Tel +36 88 520 390
Fax +36 88 520 211
Alternate Recommendations
Other PortNote® Solutions:
• Ethernet - ESD Protection
• Ethernet - Power Contact and
Surge Protection
• Ethernet - 10/100 Base-T Power over
Ethernet (PoE) PSE Unit Protection
Contact Bourns for PoE+ or Gbit PoE
port solutions.
Benefit
is solution provides ESD protection for
10/100 Base-T PoE PD devices without
impairing the Ethernet signal.
Objective
10/100 Base-T Power over Ethernet (PoE)
interfaces combine data and 48 V DC to provide
remote power to a Powered Device (PD). is
solution provides ESD and overcurrent protection
for the PD unit.
Solution
1 TVS Diode Array: CDSOT236-0504C
2 Bridge Rectiers: CDNBS04-B08200
1 TVS Diode: SMBJ58A
1 Transformer: SM51108PEL
Compliance
IEEE 802.3af and IEEE 802.11af
IEC 61000-4-2 Level 4 (8 kV / 15 kV)
COPYRIGHT© 2014 • BOURNS, INC. • 9/14 • e/K1454 • “PortNote” is a registered service mark of Bourns, Inc.
“Bourns” is a registered trademark of Bourns, Inc. in the U.S. and other countries.
PN-DESIGNKIT-34
Design Kit
