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| PROTECTION PRODUCTS Description Low Capacitance TVS for High-Speed Data Interfaces Features 2000 watts peak pulse power (tp = 8/20s) Transient protection for high-speed data lines to Bellcore 1089 (Intra-Building) 100A (2/10s) ITU K.20 IPP=40A (5/310s) IEC 61000-4-2 (ESD) 15kV (air), 8kV (contact) IEC 61000-4-4 (EFT) 40A (5/50ns) IEC 61000-4-5 (Lightning) 100A (8/20s) Protects two lines in common and differential mode Low capacitance for high-speed interfaces Low clamping and operating voltage Integrated structure saves board space and increases reliability Solid-state silicon avalanche technology LC03-6 The LC03-6 transient voltage suppressor is designed to protect components which are connected to high speed telecommunication lines from voltage surges caused by lightning, electrostatic discharge (ESD), cable discharge events (CDE), and electrical fast transients (EFT). TVS diodes are ideal for use as board level protection of sensitive semiconductor components. The LC03-6 combines a TVS diode with a rectifier bridge to provide transient protection in both common and differential mode with a single device. The capacitance of the device is minimized (< 25pF) to ensure correct signal transmission on high speed lines . The LC03-6 meets the short-haul (intra-building) transient immunity requirements of Bellcore 1089 for telecommunications applications. The SO-8 surface mount package allows flexibility in the design of crowded PC boards. Mechanical Characteristics JEDEC SO-8 package RoHS/WEEE Compliant UL 497B listed Molding compound flammability rating: UL 94V-0 Marking : Part number, date code Packaging : Tube or Tape and Reel per EIA 481 Applications T1/E1 Line Cards T3/E3 and DS3 Interfaces STS-1 Interfaces ISDN S/T-Interfaces ISDN U-Interfaces 10/100 Ethernet Circuit Diagram Schematic & PIN Configuration 1 8 Pin 1 and 8 2 7 Pin 2, 3, 6, and 7 Ground 3 6 4 5 Pin 4 and 5 SO-8 (Top View) Revision 01/18/2008 1 www.semtech.com LC03-6 PROTECTION PRODUCTS Absolute Maximum Rating R ating Peak Pulse Power (tp = 8/20s) Peak Pulse Current (tp = 8/20s) Lead Soldering Temperature Operating Temperature Storage Temperature Symbol Pp k IP P TL TJ TSTG Value 2000 100 260 (10 sec.) -55 to +125 -55 to +150 Units Watts A C C C Electrical Characteristics LC03-6 Parameter Reverse Stand-Off Voltage Reverse Breakdown Voltage Reverse Leakage Current Clamp ing Voltage Clamp ing Voltage Junction Cap acitance Symbol VRWM V BR IR VC VC Cj It = 1mA VRWM = 6V, T=25C IPP = 50A, tp = 8/20s Line-to-Ground IPP = 100A, tp = 8/20s Line-to-Ground Between I/O p ins and Ground VR = 0V, f = 1MHz Between I/O p ins VR = 0V, f = 1MHz 16 6.8 25 15 20 25 Conditions Minimum Typical Maximum 6 Units V V A V V pF 8 12 pF 2008 Semtech Corp. 2 www.semtech.com LC03-6 PROTECTION PRODUCTS Typical Characteristics Non-Repetitive Peak Pulse Power vs. Pulse Time 100 Peak Pulse Power - Ppk (kW) Power Derating Curve 110 100 90 % of Rated Power or I PP 80 70 60 50 40 30 20 10 10 1 0.1 0.1 1 10 Pulse Duration - tp (s) 100 1000 0 0 25 50 75 100 125 150 175 Ambient Temperature - TA (oC) Pulse Waveform 110 100 90 80 Percent of IPP 70 60 50 40 30 20 10 0 0 5 10 15 T im e (s) 20 25 30 td = I PP /2 e -t W aveform Parameters: tr = 8s td = 20s Clamping Voltage - VC (V) 20 18 16 14 12 10 8 6 4 2 0 Clamping Voltage vs. Peak Pulse Current L in e-T o-L in e L in e -T o -G rou n d W a v efo rm P ara m e ters : tr = 8 s td = 2 0 s 0 10 20 30 40 50 60 70 80 90 100 11 0 P e a k P u lse C u r re n t - I P P (A ) Normalized Capacitance vs. Reverse Voltage 1.4 1.2 Forward Voltage - VF (V) 6 Forward Voltage vs. Forward Current 5 1 C J(VR ) / C J(VR =0) 0.8 0.6 0.4 0.2 0 0 1 2 3 4 Reverse Voltage - VR (V) 5 6 4 3 2 1 W a v efo rm P ara m e ters : tr = 8 s td = 2 0 s f = 1MHz 0 0 10 20 30 40 50 60 70 80 90 100 11 0 F o r w a r d C u r r e n t - I F (A ) 2008 Semtech Corp. 3 www.semtech.com LC03-6 PROTECTION PRODUCTS Typical Characteristics Insertion Loss S21 - I/O to I/O Insertion Loss S21 - I/O to Gnd CH1 S21 LOG 6 dB / REF 0 dB 1: -3.03 dB 910 MHz CH1 S21 LOG 6 dB / REF 0 dB 1: -3.03 dB 642 MHz 0 dB -6 dB -12 dB -18 dB -24 dB -30 dB -36 dB -42 dB -48 dB 1 MHz START . 030 MHz 10 MHz 100 MHz 3 2 1 4 2: -2.84 dB 900 MHz 3: -20.79 dB 1.8 GHz 4: -2.97 dB 2.5 GHz 0 dB 4 2: -7.11 dB 900 MHz 1 -6 dB -12 dB -18 dB -24 dB -30 dB -36 dB -42 dB 2 3: -23.03 dB 1.8 GHz 4: -6.17 dB 2.5 GHz 3 3 1 GHz GHz STOP 3000. 000000 MHz -48 dB 1 MHz START . 030 MHz 10 MHz 100 MHz 3 1 GHz GHz STOP 3000. 000000 MHz 2008 Semtech Corp. 4 www.semtech.com LC03-6 PROTECTION PRODUCTS Applications Information Device Connection Options for Protection of Two High-Speed Data Lines The LC03-6 is designed to protect two high-speed data lines (one differential pair) from transient over-voltages which result from lightning and ESD. The device can be configured to protect in differential (Line-to-Line) and common (Line-to-Ground) mode. Data line inputs/ outputs are connected at pins 1 to 8, and 4 to 5 as shown. Pins 2, 3, 6, and 7 are connected to ground. These pins should be connected directly to a ground plane on the board for best results. The path length is kept as short as possible to minimize parasitic inductance. In applications where high common mode voltages are present, differential protection is achieved by leaving pins 2, 3, 6, and 7 not connected. T1/E1 Linecard Protection (Intra-Building) A typical T1/E1 linecard protection circuit is shown below. The LC03-6 is connected between Tip and Ring on the transmit and receive line pairs. It provides protection to metallic and common mode lightning surges per Bellcore 1089. This design takes advantage of the isolation of the transformer to suppress common mode surges. To complete the protection circuit, the RClamp3304N (or RClamp0504N for 5V supplies) is employed as the IC side protection element. This device helps prevent the transceiver from latching up by providing fine clamping of transients that are coupled through the transformer. For further information, reference Semtech application note AN97-10. T3/E3 and STS-1 Protection The LC03-6 can also be used to protect T3/E3 and STS-1 interfaces. The data lines from the BNC interface are run through the LC03-6 (i.e. enters at pin 1 and exits at pin 8) with the ground connection made at the other side of the device (pins 4 and 5). The center pins (2, 3, 6, and 7) are not connected. In this configuration, the LC03-6 adds less than 12pF of capacitance to each line and provides surge protection to 100A (tp=8/20s). Connection for Differential (Line-to-Line) and Common Mode Protection (Line-to-Ground) Connection for Differential Protection (Line-to-Line) 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. 2008 Semtech Corp. 5 www.semtech.com LC03-6 PROTECTION PRODUCTS Typical Applications 1 2 3 4 8 7 6 5 LC03-6 RClamp3304N 1 2 3 4 8 7 6 5 LC03-6 T1 Line Card Protection (Short-Haul Applications) 1 2 3 4 8 7 6 5 DS3, T3, E3, or STS-1 1 2 3 4 8 7 6 5 T3/E3 and STS-1 Protection 2008 Semtech Corp. 6 www.semtech.com LC03-6 PROTECTION PRODUCTS Typical Applications (Continued) LC03-6 LC03-6 ISDN S-Interface Protection ISDN U-Interface Secondary Protection 2008 Semtech Corp. 7 www.semtech.com LC03-6 PROTECTION PRODUCTS Typical Applications (Continued) 10/100 Ethernet Protection High Speed Driver/Receiver Protection 2008 Semtech Corp. 8 www.semtech.com LC03-6 PROTECTION PRODUCTS Applications Information - SPICE Model 0.7 nH D2 D1 D2 D2 D2 LC03-6 Spice Model LC03-6 Spice Parameters Parameter IS BV VJ RS IB V CJO TT M N EG Unit Amp Volt Volt Ohm Amp Farad sec --eV D1 (T VS) 1.0E-20 7.9 0.6 0.102 1E-3 3.4e-9 2.541E-9 0.007 1.1 1.11 D2 (LCR D) 3.98E-13 240 0.64 0.048 1E-3 8.0E-12 2.541E-9 0.022 1.1 1.11 2008 Semtech Corp. 9 www.semtech.com LC03-6 PROTECTION PRODUCTS Outline Drawing - SO-8 A N 2X E/2 E1 E 1 ccc C 2X N/2 TIPS 2 e/2 B D aaa C SEATING PLANE A2 A C bxN bbb A1 C A-B D SIDE VIEW SEE DETAIL DETAIL GAGE PLANE 0.25 L (L1) e D h h H DIM c A A1 A2 b c D E1 E e h L L1 N 01 aaa bbb ccc DIMENSIONS INCHES MILLIMETERS MIN NOM MAX MIN NOM MAX .053 .069 .004 .010 .049 .065 .012 .020 .010 .007 .189 .193 .197 .150 .154 .157 .236 BSC .050 BSC .010 .020 .016 .028 .041 (.041) 8 8 0 .004 .010 .008 1.75 1.35 0.10 0.25 1.25 1.65 0.51 0.31 0.17 0.25 4.80 4.90 5.00 3.80 3.90 4.00 6.00 BSC 1.27 BSC 0.25 0.50 0.40 0.72 1.04 (1.04) 8 0 8 0.10 0.25 0.20 01 A A 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. 4. REFERENCE JEDEC STD MS-012, VARIATION AA. Land Pattern - SO-8 X DIM (C) G Z C G P X Y Z DIMENSIONS INCHES MILLIMETERS (.205) .118 .050 .024 .087 .291 (5.20) 3.00 1.27 0.60 2.20 7.40 Y P NOTES: 1. THIS LAND PATTERN IS FOR REFERENCE PURPOSES ONLY. CONSULT YOUR MANUFACTURING GROUP TO ENSURE YOUR COMPANY'S MANUFACTURING GUIDELINES ARE MET. 2. REFERENCE IPC-SM-782A, RLP NO. 300A. 2008 Semtech Corp. 10 www.semtech.com LC03-6 PROTECTION PRODUCTS Ordering Information Par t Number LC03-6.TB LC03-6.TBT Lead Finish SnPb Pb free Qty per Reel 500 500 R eel Size 7 Inch 7 Inch Contact Information Semtech Corporation Protection Products Division 200 Flynn Rd., Camarillo, CA 93012 Phone: (805)498-2111 FAX (805)498-3804 2008 Semtech Corp. 11 www.semtech.com |
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