LC01-6 Low Capacitance TVS for High-Speed Telecommunication Systems PROTECTION PRODUCTS Description Features u 1500 watts peak pulse power (tp = 10/1000µs) u Transient protection for high speed data lines to The LC01-6 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), and electrical fast transients (EFT). TVS diodes are ideal for use as board level protection of sensitive semiconductor components. The LC01-6 is designed for metallic mode, secondary line side protection in digital line card applications. It features solid-state silicon-avalanche technology for unmatched transient protection without device degradation. The LC01-6 combines TVS diodes with low capacitance compensation diodes to provide an integrated, low capacitance protection solution. Additional features include sub-nanosecond response time, a low operating voltage of 6 volts, and low clamping voltage. u u u u u IEC 61000-4-2 (ESD) 15kV (air), 8kV (contact) IEC 61000-4-5 (Lightning) 95A (8/20µs) Bellcore 1089 (Outer-Building), 100A (10/1000µs), 500A (2/10µs) FCC Part 68 200A (10/160µs) ITU K.20 200A (5/310µs) Differential protection for one Tip & Ring line pair Low capacitance for high speed interfaces Low operating & clamping voltage Integrated structure saves board space and increases reliability Solid-state silicon-avalanche technology Mechanical Characteristics u u u u u The LC01-6 is suitable for use on T1/E1 and xDSL interfaces in equipment such as base stations, routers, and channel service units. The LC01-6 meets the longhaul (outer-building) transient immunity requirements of Bellcore 1089, FCC Part 68 (Type A and B surges), and IEC 61000-4-5. JEDEC SO-16W package UL 497B listed Molding compound flammability rating: UL 94V-0 Marking : Part number, date code, logo Packaging : Tube or Tape and Reel per EIA 481 Applications u u u u u Circuit Diagram T1/E1 Line Cards Base Stations WAN Interfaces xDSL Interfaces CSU/DSU Equipment Schematic & PIN Configuration SO-16W (Top View) Revision 9/2000 1 www.semtech.com LC01-6 PROTECTION PRODUCTS Absolute Maximum Rating R ating Symbo l Value Units Peak Pulse Pow er (tp = 10/1000µs) Pp k 1500 Watts Peak Pulse Current (tp = 10/1000µs) I PP 100 A Peak Pulse Current (tp = 10/160µs) I PP 200 A Thermal Resistance Junction to Case qJC 30 °C/W Thermal Resistance Junction to Amb ient qJA 95 °C/W Lead Soldering Temp erature TL 260 (10 sec.) °C Op erating Temp erature TJ -55 to +125 °C TSTG -55 to +150 °C Storage Temp erature Electrical Characteristics LC01-6 Par ame te r Symbo l Co nd itio ns Minimum Typ ical Maximum Units 6 V Reverse Stand -Off Voltage VRWM Reverse Breakd ow n Voltage V BR It = 1mA Reverse Leakage Current IR V RWM = 6V, T=25°C 25 µA Clamp ing Voltage VC IPP = 100A tp = 10/1000µ s 15 V Clamp ing Voltage VC IPP = 200A tp = 10/160µ s 16 V Temp erature Coefficient of Breakd ow n Voltage Junction Cap acitance ã 2000 Semtech Corp. V 3 aTVBR Cj 8 V R = 0V, f = 1MHz 2 mV /°C 50 pF www.semtech.com LC01-6 PROTECTION PRODUCTS Typical Characteristics Non-Repetitive Peak Pulse Power vs. Pulse Time Power Derating Curve 100 110 Peak Pulse Power - P PP (kW) 100 % of Rated Power or IPP 90 10 80 70 60 50 40 30 20 10 0 1 0.1 1 10 100 0 1000 25 50 Pulse Waveform 125 150 175 14 Waveform Parameters: tr = 10µs td = 1000µs 90 80 70 12 Clamping Voltage - VC (V) 100 Percent of IPP 100 Clamping Voltage vs. Peak Pulse Current 110 e-t 60 50 40 td = IPP/2 30 20 10 8 6 Waveform Parameters: tr = 10µs td = 1000µs 4 2 10 0 0 0 10 1000 3000 0 Time (µs) 10 20 30 40 50 60 70 80 90 100 110 Peak Pulse Current - IPP (A) Capacitance vs. Reverse Voltage AC Power Dissipation 41.5 6 Pins 1-8 tied together Pins 9 - 16 tied together f = 1MHz 41 5 40.5 Power (Watts) Typical Capacitance (pF) 75 Ambient Temperature - TA (oC) Pulse Duration - tp (µs) 40 39.5 39 4 3 2 1 38.5 0 0 1 2 3 4 5 6 1 Reverse Voltage (V) ã 2000 Semtech Corp. 10 100 1000 Time (Seconds) 3 www.semtech.com LC01-6 PROTECTION PRODUCTS Applications Information Device Connection Options for Protection of HighSpeed Data Lines The LC01-6 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 pair in differential (Line-to-Line) mode. Pins 18 are connected to line 1 and pins 9-16 are connected to line 2 as shown. All pins should be connected for best results. T1/E1 Linecard Protection A typical long-haul T1/E1 linecard protection circuit is shown below. The LC01-6 is connected between Tip & Ring on the transmit and receive line pairs. It provides protection to metallic (line-to-line) lightning surges per Bellcore 1089 and FCC Part 68. Depending on the application, a high voltage crowbar device (not shown) such as a gas discharge tube (GDT) or TVS Thyristor may be used to suppress common mode (line-toground) surges. To complete the protection circuit, the SRDA05-4 (or SRDA3.3-4 for 3.3V supplies) is employed as the secondary 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. Positive temperature coefficient (PTC) resistors or fuses are also required for AC power cross protection. For further information, reference Semtech application note AN97-10. Figure 1 - Schematic and Pin Configuration Figure 2 - Connection for Differential Protection (Line-to-Line) ã 2000 Semtech Corp. 4 www.semtech.com LC01-6 PROTECTION PRODUCTS Typical Applications T1 Line Card Protection (Long-Haul Applications) SDSL Protection ã 2000 Semtech Corp. 5 www.semtech.com LC01-6 PROTECTION PRODUCTS Outline Drawing - SO-16W Land Pattern - SO-16W ã 2000 Semtech Corp. 6 www.semtech.com LC01-6 PROTECTION PRODUCTS Ordering Information P ar t Numbe r Wo r king Vo ltage Qty p e r Reel R e e l Size LC01-6.TD 6V 1000 13 Inch Note: (1) No suffix indicates tube pack. Contact Information Semtech Corporation Protection Products Division 652 Mitchell Rd., Newbury Park, CA 91320 Phone: (805)498-2111 FAX (805)498-3804 ã 2000 Semtech Corp. 7 www.semtech.com