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| Low Capacitance TVS Diode For High Speed Data Interfaces PROTECTION PRODUCTS Description The SL series of TVS arrays are designed to protect sensitive electronics from damage or latch-up due to ESD, lightning, and other voltage-induced transient events. They are available with operating voltages of 5V, 12V, 15V and 24V. TVS diodes are solid-state devices designed specifically for transient suppression. They offer desirable characteristics for board level protection including fast response time, low operating and clamping voltage and no device degradation. The SL series devices feature a low capacitance, fast switching compensation diode in series with a standard TVS diode. This effectively reduces the overall capacitance of the device to less than 5pF making it an integrated, low capacitance solution for use on high-speed interfaces. The SL series devices may be used to meet the immunity requirements of IEC 61000-4-2, level 4. SL05 THRU SL24 Features u Transient protection for high-speed data lines to IEC 61000-4-2 (ESD) 15kV (air), 8kV (contact) IEC 61000-4-4 (EFT) 40A (5/50ns) IEC 61000-4-5 (Lightning) 12A (8/20s) Small package for use in portable electronics Two devices will protect one line Low capacitance for high-speed data lines Working voltages: 5V, 12V, 15V and 24V Solid-state silicon avalanche technology u u u u u u u u u u u u u u u Mechanical Characteristics JEDEC SOT23 package Molding compound flammability rating: UL 94V-0 Marking : Marking Code Packaging : Tape and Reel per EIA 481 Applications High-Speed data lines Cellular handsets & accessories Universal Serial Bus (USB) port protection Portable instrumentation LAN/WAN equipment Peripherals Circuit Diagram Schematic & PIN Configuration 1 3 (N.C.) 2 SOT23 Top View Revision 9/2000 1 www.semtech.com SL05 THRU SL24 PROTECTION PRODUCTS Absolute Maximum Rating R ating Peak Pulse Pow er (tp = 8/20 s) ESD Voltage (HBM p er IEC 61000-4-2) Lead Sold ering Temp erature Op erating Temp erature Storage Temp erature Symbo l Pp k I PP TL TJ TSTG Value 300 >25 260 (10 sec.) -55 to +125 -55 to +150 Units Watts kV C C C Electrical Characteristics SL05 Par ame te r Reverse Stand -Off Voltage Reverse Breakd ow n Voltage Reverse Leakage Current Clamp ing Voltage Clamp ing Voltage Maximum Peak Pulse Current Junction Cap acitance Symbo l VRWM V BR IR VC VC Ip p Cj It = 1mA V RWM = 5V, T=25C IPP = 1A , tp = 8/20 s IPP = 5A , tp = 8/20 s tp = 8/20 s Pi n 1 t o 2 V R = 0V, f = 1MHz 6 20 9.8 11 17 5 Co nd itio ns Minimum Typ ical Maximum 5 Units V V A V V A pF SL12 Par ame te r Reverse Stand -Off Voltage Reverse Breakd ow n Voltage Reverse Leakage Current Clamp ing Voltage Clamp ing Voltage Maximum Peak Pulse Current Junction Cap acitance Symbo l VRWM V BR IR VC VC Ip p Cj It = 1mA V RWM = 12V, T=25C IPP = 1A , tp = 8/20 s IPP = 5A , tp = 8/20 s tp = 8/20 s Pi n 1 t o 2 V R = 0V, f = 1MHz 2 Co nd itio ns Minimum Typ ical Maximum 12 Units V V 13.3 1 19 24 12 5 A V V A pF a 2000 Semtech Corp. www.semtech.com SL05 THRU SL24 PROTECTION PRODUCTS Electrical Characteristics (Continued) SL15 Par ame te r Reverse Stand -Off Voltage Reverse Breakd ow n Voltage Reverse Leakage Current Clamp ing Voltage Clamp ing Voltage Maximum Peak Pulse Current Junction Cap acitance Symbo l VRWM V BR IR VC VC Ip p Cj It = 1mA V RWM = 15V, T=25C IPP = 1A , tp = 8/20 s IPP = 5A , tp = 8/20 s tp = 8/20 s Pi n 1 t o 2 V R = 0V, f = 1MHz 16.7 1 24 30 10 5 Co nd itio ns Minimum Typ ical Maximum 15 Units V V A V V A pF SL24 Par ame te r Reverse Stand -Off Voltage Reverse Breakd ow n Voltage Reverse Leakage Current Clamp ing Voltage Clamp ing Voltage Maximum Peak Pulse Current Junction Cap acitance Symbo l VRWM V BR IR VC VC Ip p Cj It = 1mA V RWM = 24V, T=25C IPP = 1A , tp = 8/20 s IPP = 5A , tp = 8/20 s tp = 8/20 s Pi n 1 t o 2 V R = 0V, f = 1MHz 26.7 1 43 55 5 5 Co nd itio ns Minimum Typ ical Maximum 24 Units V V A V V A pF a 2000 Semtech Corp. 3 www.semtech.com SL05 THRU SL24 PROTECTION PRODUCTS Typical Characteristics Non-Repetitive Peak Pulse Power vs. Pulse Time 10 Peak Pulse Power - PPP (kW) 110 100 90 % of Rated Power or I PP 80 70 60 50 40 30 20 10 0 Power Derating Curve 1 0.1 0.01 0.1 1 10 Pulse Duration - tp ( s) 100 1000 0 25 50 75 100 125 150 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 Time (s) 20 25 30 td = IPP/2 e -t Waveform Parameters: tr = 8s td = 20s ESD Pulse Waveform (Per IEC 61000-4-2) Level IEC 61000-4-2 Discharge Parameters First Peak Current (A) 1 2 3 4 7.5 15 22.5 30 Peak Current at 30 ns (A) 4 8 12 16 Peak Current at 60 ns (A) 8 4 6 8 Test Test Voltage Voltage (Contact ( A ir Disch arge) Disch arge) (kV ) (kV ) 2 4 6 8 2 4 8 15 a 2000 Semtech Corp. 4 www.semtech.com SL05 THRU SL24 PROTECTION PRODUCTS Applications Information Device Connection for Protection of One High-Speed Data Line The SL series devices are designed to protect highspeed data lines. The SLxx utilizes a low capacitance compensation diode in series with, but in opposite polarity to a TVS diode in each line to achieve an effective capacitance of less than 5pF per device. During a transient event, the internal rectifier must be forward biased (TVS is reversed biased). Therefore, each device will only suppress transient events in one polarity. To achieve protection in both positive and negative polarity, a second device is connected in antiparallel to the first. On unidirectional lines, a fast switching steering diode may be used as an alternative to using two SL devices. The options for connecting the devices are as follows: l SL Connection Options Two Devices : Bidirectional or Unidirectional Line Low capacitance protection of one high-speed line: Protection of one unidirectional or bidirectional high-speed line is achieved by connecting two devices in anti-parallel. Pin 1 of the first device is connected to the line and pin 2 is connected to ground (or to a second line for differential protection). Pin 2 of the second device is connected to line 1 and pin 1 is connected to ground (or line 2) as shown. Pin 3 is not connected. During positive duration transients, the first device will conduct from pin 1 to 2. The steering diode conducts in the forward direction while the TVS will avalanche and conduct in the reverse direction. During negative transients, the second device will conduct in the same manner. For optimum protection, the ground connections should be made directly to the ground plane for best results. The path length is kept as short as possible to reduce the effects of parasitic inductance in the board traces. The path length between the TVS and the protected line should also be minimized. Connection Option for Unidirectional Lines Only: An optional method for protecting unidirectional (normal signal polarities above ground) lines is to add a fast switching steering diode in parallel to the SL TVS. Input/outputs are connected to pin 1 of the SL device and the cathode of the rectifier. The anode of the diode and pin 2 of the SL TVS are connected to ground. One Devices with Steering Diode : Unidirectional Line Only I/O Line Protection l a 2000 Semtech Corp. 5 www.semtech.com SL05 THRU SL24 PROTECTION PRODUCTS Outline Drawing - SOT23 Land Pattern - SOT23 Note 1 : Grid placement courtyard is 8 x 8 elements (4mm x 4mm) in accordance with the international grid detailed in IEC Publication 97. a 2000 Semtech Corp. 6 www.semtech.com SL05 THRU SL24 PROTECTION PRODUCTS Marking Codes Par t Numbe r SL05 SL12 SL15 SL24 Mar king Co d e L05 L12 L15 L24 Ordering Information Par t Numbe r SL05.TC SL05.TG SL12.TC SL12.TG SL15.TC SL15.TG SL24.TC SL24.TG Wo r king Vo ltage 5V 5V 12V 12V 15V 15V 24V 24V Qty p e r R e e l 3,000 10,000 3,000 10,000 3,000 10,000 3,000 10,000 R e e l Size 7 Inch 13 Inch 7 Inch 13 Inch 7 Inch 13 Inch 7 Inch 13 Inch Contact Information Semtech Corporation Protection Products Division 652 Mitchell Rd., Newbury Park, CA 91320 Phone: (805)498-2111 FAX (805)498-3804 a 2000 Semtech Corp. 7 www.semtech.com |
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