RClamp1224S Low Capacitance TVS for ADSL Interfaces PROTECTION PRODUCTS - RailClamp® Description Features Transient protection for high-speed data lines to RailClamp® TVS arrays are ultra low capacitance ESD protection devices designed to protect high speed data interfaces. This series has been specifically designed to protect sensitive components which are connected to high-speed data and transmission lines from overvoltage caused by ESD (electrostatic discharge), CDE (Cable Discharge Events), and EFT (electrical fast transients). These devices integrate low capacitance, surge-rated compensation diodes with high power transient voltage suppressors (TVS). The capacitance of the device is limited to 3pF maximum to ensure correct signal transmission on high-speed lines. The RClamp®1224S is in a 6-pin SOT-23 package. The leads are finished with lead-free matte tin. They are particularly well suited for applications where board space is at a premium. The RClamp1224S may be used to protect xDSL interfaces, multi-protocol serial transceivers, portable electronics, and wireless systems. Mechanical Characteristics JEDEC SOT-23 6L package Pb-Free, Halogen Free, RoHS/WEEE Compliant Nominal Dimensions: 2.9 x 2.8mm Molding compound flammability rating: UL 94V-0 Marking: Marking Code + Date Code Packaging: Tape and Reel Applications Package Dimensions xDSL Interfaces RS-232, RS-422 Interfaces Multi-Protocol Serial Transceivers High-Speed Data Lines WAN/LAN Equipment Carrier Class Equipment Customer Premise Equipment Schematic & Pin Configuration 1.6 1 IEC 61000-4-2 (ESD) ±15kV (air), ±8kV (contact) IEC 61000-4-4 (EFT) 40A (5/50ns) IEC 61000-4-5 (Lightning) , 15A (8/20μs) Optimized for easy PCB layout Low capacitance: 3pF Operating voltage: 12V Low clamping voltage Small Package saves board space Solid-state technology 2.8 2 2.9 1.0 6 Pin SOT-23 package Nominal Dimensions in mm Revision 6/2/2010 (Top Side View) 1 www.semtech.com RClamp1224S PROTECTION PRODUCTS Absolute Maximum Rating R ating Symbol Value Units Peak Pulse Power (tp = 8/20μs) Pp k 400 Watts Peak Pulse Current (tp = 8/20μs) IP P 15 A ESD p er IEC 61000-4-2 (Air) ESD p er IEC 61000-4-2 (Contact) VESD 15 8 kV TJ -40 to +85 °C TSTG -55 to +150 °C Op erating Temp erature Storage Temp erature Electrical Characteristics (T=25oC unless otherwise specified) Parameter Symbol Conditions Reverse Stand-Off Voltage VRWM Reverse Breakdown Voltage V BR It = 1mA Reverse Leakage Current IR VRWM = 12V T= 0 - 85°C Clamping Voltage VC Clamping Voltage Junction Capacitance1 © 2010 Semtech Corp. Minimum Typical Maximum Units 12 V 13.3 V 0.02 μA IPP = 1A, tp = 8/20μs 19 V VC IPP = 15A, tp = 8/20μs 27 V Cj Pi n 1 to Pi n 3 Pi n 4 to Pi n 6 VR = 0V - 12V, f = 1MHz 3 pF 2 0.01 1.5 www.semtech.com RClamp1224S PROTECTION PRODUCTS Typical Characteristics Non-Repetitive Peak Pulse Power vs. Pulse Time Power Derating Curve 10 110 % of Rated Power or PI P Peak Pulse Power - PPP (kW) 100 1 0.1 90 80 70 60 50 40 30 20 10 0 0.01 0.1 1 10 100 0 1000 25 50 75 100 125 150 Ambient Temperature - TA (oC) Pulse Duration - tp (⎯s) Pulse Waveform Clamping Voltage vs. Peak Pulse Current 35 110 100 Clamping Voltage - VC (V) 90 Percent of IPP 80 70 e -t 60 50 40 td = I PP /2 30 20 30 25 20 15 Waveform Parameters: tr = 8μs td = 20μs 10 10 5 0 0 5 10 15 20 25 30 0 5 T im e (µs) 10 15 Peak Pulse Current - IPP (A) Normalized Junction Capacitance vs. Reverse Voltage (Line-to-Ground) Typical Insertion Loss S21 (Each Line) CH1 S21 LOG 6 dB / REF 0 dB 1: - 0.16570 dB 800 MHz 2 1.8 Cj(VR)/Cj(VR=0V) 2: - 0.22400 dB 900 MHz 0 dB 1.6 12 5 3 1.4 -6 dB 1.2 -12 dB 1 -18 dB 0.8 4 3: - 1.2278 dB 1.8 GHz 4: - 3.6123 dB 2.5 GHz -24 dB 0.6 -30 dB 0.4 -36 dB 0.2 f = 1 MHz 0 -42 dB 0 2 4 6 8 10 12 -48 dB Reverse Voltage - VR (V) 1 MHz START . 030 MHz © 2010 Semtech Corp. 3 10 MHz 100 MHz 3 1 GHz GHz STOP 3000. 000000 MHz www.semtech.com RClamp1224S PROTECTION PRODUCTS Applications Information Pin Conf iguration (T op Side Vie w) Configuration (Top View) Device Connection for Metallic Protection of HighSpeed Data Lines The RClamp1224S 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. For metallic mode protection, the input of line 1 is connected at pin 1 and the output is connected at pin 6. Likewise, the input of line 2 is connected at pin 3 and the output is connected at pin 4. For common mode protection, ground either pins 1 and 6 or pins 3 and 4. The ground connection should be made directly to the ground plane for best results. Matte Tin Lead Finish Matte tin has become the industry standard lead-free replacement for SnPb lead finishes. A matte tin finish is composed of 100% tin solder with large grains. Since the solder volume on the leads is small compared to the solder paste volume that is placed on the land pattern of the PCB, the reflow profile will be determined by the requirements of the solder paste. Therefore, these devices are compatible with both lead-free and SnPb assembly techniques. In addition, unlike other lead-free compositions, matte tin does not have any added alloys that can cause degradation of the solder joint. © 2010 Semtech Corp. 4 www.semtech.com RClamp1224S PROTECTION PRODUCTS Outline Drawing - SOT-23 6L DIM A e1 2X E/2 A A1 A2 b c D E1 E e e1 L L1 N 01 aaa bbb ccc D N EI 1 E 2 ccc C 2X N/2 TIPS e B D aaa C A2 SEATING PLANE DIMENSIONS INCHES MILLIMETERS MIN NOM MAX MIN NOM MAX .057 .035 .000 .006 .035 .045 .051 .010 .020 .003 .009 .110 .114 .122 .060 .063 .069 .110 BSC .037 BSC .075 BSC .012 .018 .024 (.024) 6 0° 10° .004 .008 .008 A H A1 C bxN bbb 0.90 1.45 0.00 0.15 .90 1.15 1.30 0.25 0.50 0.08 0.22 2.80 2.90 3.10 1.50 1.60 1.75 2.80 BSC 0.95 BSC 1.90 BSC 0.30 0.45 0.60 (0.60) 6 0° 10° 0.10 0.20 0.20 C A-B D c GAGE PLANE 0.25 L 01 (L1) SEE DETAIL DETAIL A A SIDE VIEW NOTES: 1. CONTROLLING DIMENSIONS ARE IN MILLIMETERS (ANGLES IN DEGREES). 2. DATUMS -A- AND -B- TO BE DETERMINED AT DATUM PLANE -H3. DIMENSIONS "E1" AND "D" DO NOT INCLUDE MOLD FLASH, PROTRUSIONS OR GATE BURRS. Land Pattern - SOT-23 6L X DIM (C) G Z Y P C G P X Y Z DIMENSIONS MILLIMETERS INCHES (.098) .055 .037 .024 .043 .141 (2.50) 1.40 0.95 0.60 1.10 3.60 NOTES: 1. © 2010 Semtech Corp. THIS LAND PATTERN IS FOR REFERENCE PURPOSES ONLY. CONSULT YOUR MANUFACTURING GROUP TO ENSURE YOUR COMPANY'S MANUFACTURING GUIDELINES ARE MET. 5 www.semtech.com RClamp1224S PROTECTION PRODUCTS Marking YW 224 Ordering Information Part Number Qty per Reel Reel Size RClamp 1224S.TCT 3,000 7 Inch Note: Lead finish is lead-free matte tin RailClamp and RClamp are trademarks of Semtech Corporation YW = 2 - Alphanumeric characters for Date Code Tape and Reel Specification User Direction of feed Device Orientation in Tape A0 3.23 +/-0.05 mm B0 K0 3.17 +/-0.05 mm Tape Width B, (Max) D 8 mm 4.2 mm (.165) 1.5 + 0.1 mm - 0.0 mm 1.37 +/-0.05 mm D1 E 1.0 mm ±0.05 1.750±.10 mm F K (MAX) P P0 P2 T(MAX) 3.5±0.05 mm 2.4 mm 4.0±0.1 mm 4.0±0.1 mm 2.0±0.05 mm 0.4 mm W 8.0 mm + 0.3 mm - 0.1 mm Contact Information Semtech Corporation Protection Products Division 200 Flynn Rd., Camarillo, CA 93012 Phone: (805)498-2111 FAX (805)498-3804 © 2010 Semtech Corp. 6 www.semtech.com