Bourns® PortNote® solutions provide protection recommendations for typical port threats. Bourns offers a variety of PortNote® solutions and design kits for your convenience. Each PortNote® design kit contains enough Bourns® products to build five of the PortNote® Solution circuits.

 

PortNote® Objective Solution Compliance Benefit
CAN-bus Surge Protection CAN is a serial bus with a message-based protocol designed specifically for automotive applications but can also be used in other areas such as industrial automation and medical equipment. Bit rates up to 1 Mbit/s are possible at network lengths below 40 m. This solution provides protection from high energy surges originating from switching and/or higher voltage transients. 2 TBU® High-Speed Protectors: TBU-CA065-100-WH IEC 61000-4-4 EFT
IEC 61000-4-5 Surge / Lightning
This solution is designed to protect the interface from surge events.
2 MOVs: MOV-10D201K
2 TVS Diode Arrays: CDSOT23-T12LC
Ethernet - ESD Protection Ethernet interfaces are 2 V digital signals operating on a 125 MHz clock. This solution provides ESD protection commonly required in indoor, short-cable applications where ESD is the primary threat. 2 TVS Diode Arrays: CDSOT236-0504C IEC 61000-4-2 Level 4 (8 kV / 15 kV) This solution provides ESD protection without impairing the Ethernet signal.
Ethernet - Power Contact and Surge Protection Ethernet interfaces are digital signals operating on a 125 MHz clock. This solution protects these communication ports against surge and power contact threats. 1 Quad Transformer: PT61020EL ITU-T K.20, K.21, K.45 Basic The Bourns® TCS™ High-Speed Protector and TVS Diode combination provide robust surge protection without impairing the Ethernet signal.
4 TCS™ High-Speed Protectors: TCS-DL004-250-WH
4 TVS Diodes: CDSOD323-T05C
8 Multifuse® PPTC Resettable Fuses: MF-RM055/240-0
Ethernet - Power over Ethernet (PoE) Surge Protection Power over Ethernet (PoE) interfaces combine VPP differential signals and nominal 48 VDC power. This solution provides protection for both the data and power signals and is compatible with 10/100/1000 Base-T. 1 Quad Transformer: PT61020EL ITU-T K.20, K.21, K.45 Basic
Telcordia GR-1089-CORE Issue 6 Port Type 4
The Bourns® TCS™ High-Speed Protector and TVS Diode combination provide robust surge protection without impairing the Ethernet signal.
4 TCS™ High-Speed Protectors: TCS-DL004-250-WH
4 TVS Diodes: CDSOD323-T05C
2 Metal Oxide Varistors (MOVs): MOV-10D820K
1 TVS Diode: SMLJ58A
Ethernet - Power Over Ethernet (PoE) PD Solution 10/100 Base-T Power over Ethernet (PoE) interfaces combine data and 48 V DC to provide remote power to a Powered Device (PD). This solution provides ESD and overcurrent protection for the PD unit. 1 TVS Diode Array: CDSOT236-0504C IEEE 802.3af and IEEE 802.11af
IEC 61000-4-2 Level 4 (8 kV / 15 kV)
This solution provides ESD protection for 10/100 Base-T PoE PD devices without impairing the Ethernet signal.
2 Bridge Rectifiers: CDNBS04-B08200
1 TVS Diode: SMBJ58A
1 Transformer: SM51108PEL
Ethernet - Power Over Ethernet (PoE) PSE Solution 10/100 Base-T Power over Ethernet (PoE) interfaces combine data and 48 V DC to provide remote power to a Powered Device (PD). This solution provides ESD and overcurrent protection for the Powered-Sourcing Equipment (PSE) unit. 1 TVS Diode Array: CDSOT236-0504C IEEE 802.3af and IEEE 802.11af
IEC 61000-4-2 Level 4 (8 kV / 15 kV)
This solution provides ESD and overcurrent protection for 10/100 Base-T PoE PSE devices without impairing the Ethernet signal.
1 Multifuse® PPTC Resettable Fuse: MF-SMDF050-2
1 Transformer: SM51108EL
IEEE 1394B - Firewire / iLink Protection IEEE 1394B is an 800 Mb serial data port with 30 V, 1.5 A capability. IEEE 1394B requires short circuit and overvoltage protection. This solution addresses challenges such as hot-swap, ESD, user abuse and damaged cables. 1 Multifuse® PPTC Resettable Fuse: MF-SM150/33-2 IEEE 1394B (2002)
IEC61000-4-2 Level 4
This solution provides ESD protection as well as overtemperature and overcurrent protection for the controller port within rated limits.
4 ChipGuard® ESD Suppressors: CG0603MLU-05E
RS-485 - Serial Port - ESD / EFT / Surge Protection 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. This solution provides protection against ESD, EFT, power and surge faults. 2 TBU® High-Speed Protectors: TBU-CA065-300-WH IEC 61000-4-2 ESD Level 4 (8 kV / 15 kV)
IEC 61000-4-4 EFT
IEC 61000-4-5 Surge / Lightning
This solution provides excellent protection for both indoor and outdoor applications. It also protects against 28 VRMS and 120 VRMS power cross condition.
2 MOVs: MOV-10D201K
1 TVS Diode Array: CDSOT23-SM712
SATA HDD Interface - Data & Power Protection SATA Hard Disk Drives are typically powered from 5 VDC. The power line needs transient, inrush and reverse polarity protection. There are also data lines susceptible to damage from ESD events when the drive is not connected. 1 Multifuse® PPTC Resettable Fuse: MF-MSMF075/24-2 IEC 61000-4-2 ESD Level 4, 8 kV This solution provides surge, inrush and reverse polarity protection on the power line and ESD protection on the data lines.
1 TVS Diode: SMBJ5.0A
1 TVS Diode Array: CDDFN10-0524P
USB 2.0 - ESD & Overcurrent Protection Universal Serial Bus (USB) 2.0 ports provide up to 480 Mbps data transfer rates and 5 V power at up to 500 mA. As a hot-pluggable interface, it typically requires protection against ESD and short circuits. This solution provides this protection. 1 Multifuse® PPTC: MF-NSMF075-2 USB 2.0
UL60950
IEC 61000-4-2 Level 4 (8 kV / 15 kV)
This solution provides USB 2.0 ports with compatible protection without impairing the transmission of power or data.
3 ChipGuard® ESD Suppressors: CG0603MLC-05LE
USB 3.0 - ESD & Overcurrent Protection Universal Serial Bus (USB) 3.0 ports provide up to 5 Gbps data transfer rates and 5 V power at up to 900 mA. As a hot-pluggable interface, it typically requires protection against ESD and short circuits. This solution provides this protection. 1 Multifuse® PPTC Resettable Fuse: MF-NSMF200-2 USB 3.0
UL60950
IEC 61000-4-2 Level 4 (8 kV / 15 kV)
This solution provides USB 3.0 ports with protection against ESD and short circuits without impairing the transmission of power or data.
1 TVS Diode Array: CDDFN10-0506N

Additional Information