Products
Circuit Protection
Semtech SRDA3.3-4
RailClamp® Low-Capacitance TVS Diode Array
RailClamps are surge rated diode arrays designed to protect high speed data interfaces. The SR series has been specifically designed to protect sensitive components which are connected to data and transmission lines from overvoltage caused by electrostatic discharge (ESD), electrical fast transients (EFT), and lightning.
Overview
Features
- Transient protection for high-speed data lines to
- IEC 61000-4-2 (ESD) ± 15 kV (air), ± 8 kV (contact)
- IEC 61000-4-4 (EFT) 40 A (5/50 ns)
- IEC 61000-4-5 (Lightning) 12 A (8/20 µs)
- Array of surge-rated diodes with internal TVS Diode
- Protects 4 I/O lines and power supply line
- Low capacitance (<15 pF) for high-speed interfaces
- Low operating and clamping voltages
- Solid-state technology
Applications
- T1/E1 secondary IC Side Protection
- T3/E3 secondary IC Side Protection
- Analog Video Protection
- Microcontroller Input Protection
- Base stations
- I²C Bus Protection
Packaging
- IEC 61000-4-2 (ESD) ± 15 kV (air), ± 8 kV (contact)
- IEC 61000-4-4 (EFT) 40 A (5/50 ns)
- IEC 61000-4-5 (Lightning) 12 A (8/20 µs)
- T1/E1 secondary IC Side Protection
- T3/E3 secondary IC Side Protection
- Analog Video Protection
- Microcontroller Input Protection
- Base stations
- I²C Bus Protection
Packaging
SOIC-8
Order Codes
- SRDA3.3-4.T: Lead-free, RoHS and WEEE compliant, 95 pcs. Tube
- SRDA3.3-4.TBT: Lead-free, RoHS and WEEE compliant, 500 pcs. Tape & Reel
Diagrams and Specs
Block Diagram
Click diagram to enlarge
Datasheets and Resources
Restricted
Application Matrices
- TVS Applications Matrix - Computers
- TVS Applications Matrix - Portables
- TVS Applications Matrix - Standards
- TVS Applications Matrix - Telecom
Application Notes
- 10/100 Ethernet Protection - SI98-02
- Calculating Clamping Voltage at Different Peak Pulse Currents - SI97-03
- Calculating Transient Energy - SI97-02
- Disadvantage of On-Chip Transient Protection - SI97-04
- Electrostatic Discharge (ESD) Protection for Ethernet Transceivers - SI97-01
- ESD Protection -SI96-12
- ESD Threat to Semiconductor Devices - SI96-11
- Low Capacitance Devices - SI96-07
- PCB Design Guidelines for ESD Suppression - SI99-01
- RailClamp® TVS Diodes for High-Speed Interfaces - SI99-02
- Secondary Transient Protection for T1/E1 Line Cards - AN97-10
- Sources of Transients: Lightning - SI96-09
- Transient Immunity Standards: IEC 61000-4-x - AN96-07
- TVS Diode Loading Capacitance vs. Data Transmission Rate - SI96-08
- TVS Diode Selection - SI96-02
- TVS Peak Pulse Power vs. Pulse Duration - SI96-03
- TVS Power Derating vs. Temperature - SI96-04
- Unidirectional and Bidirectional Operation - SI96-05
- What are TVS Diodes? - SI96-01
Datasheets
Tools and Resources
TVS Protection Selector Guide
Download Free Copy
