TCLAMP1272S Datasheet, PDF (1/7 Pages) Semtech Corporation – Low Capacitance TClamp Surge Protection for xDSL Interfaces

TClamp1272S
Low Capacitance TClamp^®
Surge Protection for xDSL Interfaces
PROTECTION PRODUCTS - TransClamp^®
Description
The TClamp^®1272S provides dedicated line driver side
surge and ESD protection for ADSL and VDSL applica-
tions. It is designed to replace multiple discrete compo-
nents in portable applications. They feature high surge
current capability of 20A (tp=8/20us) and low clamping
voltage making them ideal for use on the IC side of a
coupling transformer.
The TClamp1272S integrates low capacitance, surge-
rated compensation diodes with high power transient
voltage suppressors (TVS). The capacitance is limited to
5pF maximum to ensure correct signal transmission on
high-speed lines. Two internal bias diodes are provided
for the TVS diode.
The TClamp1272S is in a 6-pin, RoHS/WEEE compliant,
SOT-23 package. The leads are finished with lead-free
matte tin. The flow- through package design simplifies
PCB layout.
Features
u Transient protection for high-speed data lines to
IEC 61000-4-2 (ESD) 30kV (air), 30kV (contact)
IEC 61000-4-4 (EFT) 40A (5/50ns)
IEC 61000-4-5 (Lightning) 25A (8/20µs)
u Array of surge rated diodes with internal TVS Diode
u Bias diodes prevent charging and discharging of TVS
capacitance
u Low capacitance: (<5pF)
u Operating voltage: 12V
u Low leakage current
u Solid-state silicon-avalanche technology
Mechanical Characteristics
u JEDEC SOT-23 6L package
u Pb-Free, Halogen Free, RoHS/WEEE Compliant
u Molding compound flammability rating: UL 94V-0
u Marking : Marking code + date code
u Packaging : Tape and Reel
Applications
u Line Driver Side protection of ADSL and VDSL inter-
faces
u Modems and Gateways
u Access Equipment
u Central Office Equipment
u Customer Premise Equipment
Circuit Diagram
Pin Configuration
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4/26/2013
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