TClamp1272S Low Capacitance TClamp® Surge Protection for xDSL Interfaces PROTECTION PRODUCTS - TransClamp® Description Features ® u Transient protection for high-speed data lines to The TClamp 1272S provides dedicated line driver side surge and ESD protection for ADSL and VDSL applications. It is designed to replace multiple discrete components 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, surgerated 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. 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 u u u u JEDEC SOT-23 6L package Pb-Free, Halogen Free, RoHS/WEEE Compliant Molding compound flammability rating: UL 94V-0 Marking : Marking code + date code Packaging : Tape and Reel Applications u Line Driver Side protection of ADSL and VDSL interfaces u Modems and Gateways u Access Equipment u Central Office Equipment u Customer Premise Equipment Circuit Diagram Pin Configuration $ % # $ # 4/26/2013 1 www.semtech.com TClamp1272S PROTECTION PRODUCTS Absolute Maximum Ratings Rating Symbol Value Units Peak Pulse Power (tp = 8/20µs) Ppk 600 Watts Peak Pulse Current (tp = 8/20µs) IPP 20 A 30 ESD per IEC 61000-4-2 (Air) kV VESD ESD per IEC 61000-4-2 (Contact) Operating Temperature Storage Temperature 30 TJ -40 to +85 °C TSTG -55 to +150 °C Electrical Characteristics (T=25OC unless otherwise specified) Parameter Symbol Conditions Reverse Stand-Off Voltage VRWM T = -40 to +85OC Reverse Breakdown Voltage VBR IBR = 1mA Reverse Leakage Current Clamping Voltage Peak Pulse Current Junction Capacitance 2013 Semtech Corporation. Min. Max. Units 12 V 17 V VRWM = 12V, T = 25OC 0.10 µA VRWM = 12V, T = 85OC 0.30 IPP = 5A, tP = 8/20µs 20 V IPP = 20A, tP = 8/20µs 30 V IPP tP = 8/20µs 20 A CJ Between any I/O pin and Ground; T = -40 to +85OC Bias+ to GND = 6V; Bias- to GND = -6V; VR = 0V; f = 1MHz 5 pF 13.5 Typ. 15 IR VC 2 www.semtech.com TClamp1272S PROTECTION PRODUCTS Typical Characteristics Non-Repetitive Peak Pulse Power vs. Pulse Time Power Derating Curve 120 10 TA = 25OC % of Rated Power or IPP Peak Pulse Power - PPP (kW) 100 1 0.1 80 60 40 20 DR040512:25:125:150 DR040412-600 0.01 0.1 1 10 100 0 1000 0 25 Pulse Duration - tp (µs) Capacitance vs. Temperature 150 Breakdown Voltage vs Temperature IBR = 1mA VR = 12V Any Pin. Line to GND Breakdown Voltage - VBR (V) 3 2 1 15.0 14.5 AR_TC1272S_VBR AR_TC1272S_CJvT 14.0 0 -50 -25 0 25 50 Temperature (oC) 75 -50 100 -25 Leakage Current vs Temperature 0 25 50 Temperature (oC) 75 100 TLP Characteristic 30 10.0 OC TAR = 25 V 12V Typical TLP Results Any Pin to any other Pin Either Direction TA = 25OC 25 7.5 20 TLP Current (A) Leakage Current - IR (nA) 125 15.5 4 Junction Capacitance - CJ (pF) 50 75 100 Ambient Temperature - TA (OC) 5.0 15 10 2.5 5 AR_TC1272S_TLP AR_TC1272S_IRvT 0 0.0 -50 -25 0 25 Temperature (oC) 2013 Semtech Corporation. 50 75 0 100 3 5 10 15 Clamping Voltage - VC (V) 20 25 30 www.semtech.com TClamp1272S PROTECTION PRODUCTS Typical Characteristics (Continued) ESD Clamping (+8kV Contact per IEC 61000-4-2) Typical Insertion Loss S21 5 150 TA = 25OC TA = 25OC 100 Insertion Loss - IL (dB) Clamping Voltage - VC (V) 0 50 -5 -10 0 -15 AR_TC1272S_IL AR_TC1272S_P8KV_1-3 -20 -50 -20 0 20 2013 Semtech Corporation. 40 Time (ns) 60 80 0.01 100 4 0.1 1 10 100 Frequency (MHz) 1000 10000 www.semtech.com TClamp1272S PROTECTION PRODUCTS Applications Information Device Connection for Metallic Protection of HighSpeed Data Lines Pin Configuration (Top Side View) The TClamp1272S is designed to protect high-speed data lines from transient over-voltages which result from lightning and ESD. The device is designed to protect one line in common mode (Line-to-Ground) or one line pair in metallic (Line-to-Line) mode. The part is designed to allow straight-through connection, see the Wiring Diagram opposite. Line 1A is connected at pin1 and its trace can continue under the part and connect to pin6, which is not connected internally to the part. A similar connection can be made for Line 1B. For metallic mode protection, the two lines are connected to pin1 and pin3. For common mode protection, connect the line to pin1 and ground pin3 (or vice-versa). The ground connection should be made directly to the ground plane for best results. Bias voltage may be applied at pins 2 and 5 with either polarity. $ % # $ # Wiring Diagram $ % # $ & 2013 Semtech Corporation. 5 www.semtech.com TClamp1272S PROTECTION PRODUCTS Outline Drawing - SOT-23-6L % % " & % ## % ' &% % % ! " " # # " ! ( # $ # # # # - . & # , & '&## % & $% % &' ' & & ) ) $'' ) ) & % ## % ' '% & #$ # ' $% # %&# *# ( (+ '& '$ & Land Pattern - SOT-23-6L % % ' ! 0 / & & % ## % / 0 , & '&## % & ' % ## % ' # ( # ' *&' ' * ' $' & & #/ & $# /&$' % $* $' '&$ & $' /&$' &% /1 % $* $' $ # ' % 2013 Semtech Corporation. 6 ' www.semtech.com TClamp1272S PROTECTION PRODUCTS Marking Ordering Information # Part Number Lead Finish Qty per Reel Reel Size TClamp1272S.TCT Matte Tin 3000 7” TransClamp and TClamp are registered trademarks of Semtech Corporation. Notes: YW = Alphanumeric character Date Code Tape and Reel Specification 2 Tape Width 8 D D1 E F mm 1.55 ±0.05 mm 1.0 ±0.25 mm 1.75 ±0.10 mm 3.50 ±0.05 !! " K (Max) mm 2.40 P P0 P2 mm 4.0 ±0.10 mm 4.0 ±0.10 mm 2.00 ±0.05 T (Max) mm 0.40 W mm 8.0 +0.3 −0.1 Contact Information Contact Information Semtech Corporation Protection Products Division 200 Flynn Rd., Camarillo, CA 93012 Phone: (805)498-2111 FAX (805)498-3804 2013 Semtech Corporation. 7 www.semtech.com