RS-485
Serial Port - ESD / EFT / Surge Protection
RS485
VCC
VCC
CDSOT23-SM712
CDSOT23-SM712
TBU-CA085-300-WH
TBU-CA085-300-WH
MOV-10D201K
TBU-CA065-300-WH
TBU-CA065-300-WH
CDSOT23-SM712
RS485
MOV-10D201K
MOV-10D201K
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.
TBU-CA065-300-WH
MOV-10D201K
CDSOT23-SM712
COPYRIGHT© 2014 • BOURNS, INC. • 2/14 • e/K1410 • “PortNote” is a registered service mark of Bourns, Inc.
“Bourns”, “TBU” and “Multifuse” are registered trademarks of Bourns, Inc. in the U.S. and other countries.
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 +41-(0)41 768 55 55
Fax +41-(0)41 768 55 10
Compliance
IEC 61000-4-2 ESD Level 4 (8 kV / 15 kV)
IEC 61000-4-4 EFT
IEC 61000-4-5 Surge / Lightning
Alternate Recommendations
SMBJ6.5A and SMBJ12A TVS Diodes with
MF-RM012/240 Multifuse® PPTC Resettable Fuse
Benefit
is solution provides excellent protection
for both indoor and outdoor applications.
It also protects against 28 VRMS and 120 VRMS
power cross condition.
Objective
RS-485 (TIA/EIA-485) is a balanced data
transmission scheme that uses voltage levels
from -7 V to +12 V (max.) at data rates up
to 10 Mbps. is solution provides protection
against ESD, EFT, power and surge faults.
Solution
2 TBU® High-Speed Protectors:
TBU-CA065-300-WH
2 MOVs: MOV-10D201K
1 TVS Diode Array: CDSOT23-SM712
PN-DESIGNKIT-22
Design Kit
