SL05 through SL24 Low Capacitance TVS Diode For High Speed Data Interfaces PROTECTION PRODUCTS Description Features 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. 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 Mechanical Characteristics JEDEC SOT23 package Molding compound flammability rating: UL 94V-0 Marking : Marking Code Packaging : Tape and Reel per EIA 481 Applications Circuit Diagram High-Speed data lines Cellular handsets AND accessories Universal Serial Bus (USB) port protection Portable instrumentation LAN/WAN equipment Peripherals Schematic & PIN Configuration 1 3 (N.C.) 2 SOT23 Top View Revision 09/23/04 1 www.semtech.com SL05 through SL24 PROTECTION PRODUCTS Absolute Maximum Rating R ating Symbol Value Units Peak Pulse Power (tp = 8/20s) Pp k 300 Watts ESD Voltage (HBM p er IEC 61000-4-2) VESD >25 kV 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 SL05 Parameter Symbol Conditions Minimum Typical Maximum Units 5 V Reverse Stand-Off Voltage VRWM Reverse Breakdown Voltage V BR It = 1mA Reverse Leakage Current IR VRWM = 5V, T=25C 20 A Clamp ing Voltage VC IPP = 1A, tp = 8/20s 9.8 V Clamp ing Voltage VC IPP = 5A, tp = 8/20s 11 V Peak Pulse Current IP P tp = 8/20s 17 A Junction Cap acitance Cj Pi n 1 to 2 VR = 0V, f = 1MHz 5 pF Symbol Conditions Maximum Units 12 V 6 V SL12 Parameter Minimum Typical Reverse Stand-Off Voltage VRWM Reverse Breakdown Voltage V BR It = 1mA Reverse Leakage Current IR VRWM = 12V, T=25C 1 A Clamping Voltage VC IPP = 1A, tp = 8/20s 19 V Clamping Voltage VC IPP = 5A, tp = 8/20s 24 V Peak Pulse Current IP P tp = 8/20s 12 A Junction Capacitance Cj Pi n 1 to 2 VR = 0V, f = 1MHz 5 pF 2004 Semtech Corp. 2 13.3 V www.semtech.com SL05 through SL24 PROTECTION PRODUCTS Electrical Characteristics (Continued) SL15 Parameter Symbol Conditions Minimum Typical Maximum Units 15 V Reverse Stand-Off Voltage VRWM Reverse Breakdown Voltage V BR It = 1mA Reverse Leakage Current IR VRWM = 15V, T=25C 1 A Clamping Voltage VC IPP = 1A, tp = 8/20s 24 V Clamping Voltage VC IPP = 5A, tp = 8/20s 30 V Peak Pulse Current IP P tp = 8/20s 10 A Junction Capacitance Cj Pi n 1 to 2 VR = 0V, f = 1MHz 5 pF Symbol Conditions Maximum Units 24 V 16.7 V SL24 Parameter Minimum Typical Reverse Stand-Off Voltage VRWM Reverse Breakdown Voltage V BR It = 1mA Reverse Leakage Current IR VRWM = 24V, T=25C 1 A Clamp ing Voltage VC IPP = 1A, tp = 8/20s 43 V Clamp ing Voltage VC IPP = 5A, tp = 8/20s 55 V Peak Pulse Current IP P tp = 8/20s 5 A Junction Cap acitance Cj Pi n 1 to 2 VR = 0V, f = 1MHz 5 pF 2004 Semtech Corp. 3 26.7 V www.semtech.com SL05 through SL24 PROTECTION PRODUCTS Typical Characteristics Non-Repetitive Peak Pulse Power vs. Pulse Time Power Derating Curve 10 110 Peak Pulse Power - Ppk (kW) 100 % of Rated Power or IPP 90 1 0.1 80 70 60 50 40 30 20 10 0 0.01 0 0.1 1 10 100 25 1000 50 75 100 125 150 o Ambient Temperature - TA ( C) Pulse Duration - tp (s) Pulse Waveform 110 Waveform Parameters: tr = 8s td = 20s 100 90 Percent of IPP 80 70 -t e 60 50 40 td = IPP/2 30 20 10 0 0 5 10 15 20 25 30 Time (s) ESD Pulse Waveform (Per IEC 61000-4-2) IEC 61000-4-2 Discharge Parameters Level 2004 Semtech Corp. 4 First Peak Current Peak Current at 30 ns Peak Current at 60 ns Test Test Voltage Voltage (Contact (A ir Discharge) Discharge) (kV) (kV) (A ) (A ) (A ) 1 7.5 4 8 2 2 2 15 8 4 4 4 3 22.5 12 6 6 8 4 30 16 8 8 15 www.semtech.com SL05 through SL24 PROTECTION PRODUCTS Applications Information SL Connection Options 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: z z 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. One Devices with Steering Diode : Unidirectional Line I/O Line Protection 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. 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. 2004 Semtech Corp. 5 www.semtech.com SL05 through SL24 PROTECTION PRODUCTS Outline Drawing - SOT23 3L D A DIM e1 A A1 A2 b c D E E1 e e1 L L1 N 0 aaa bbb H 3 B E1 GAUGE PLANE SEATING PLANE E 0 c 0.25 C L L1 DETAIL A 1 2 bxN bbb e A2 A .035 .000 .035 .012 .003 .110 .082 .047 .015 0 .037 .114 .093 .051 .075 .037 .020 .022 3 .004 .008 .044 .004 .040 .020 .007 .120 .104 .055 .024 8 0.89 1.12 0.01 0.10 0.88 0.95 1.02 0.30 0.51 0.08 0.18 2.80 2.90 3.04 2.10 2.37 2.64 1.20 1.30 1.40 1.90 BSC 0.95 BSC 0.40 0.50 0.60 (0.55) 3 0 8 0.10 0.20 C A B 3X aaa C SEE DETAIL A SIDE VIEW SEATING PLANE A1 DIMENSIONS INCHES MILLIMETERS MIN NOM MAX MIN NOM MAX C NOTES: 1. CONTROLLING DIMENSIONS ARE IN MILLIMETERS (ANGLES IN DEGREES). 2. DATUMS -A- AND -B- TO BE DETERMINED AT DATUM PLANE -H- 3. DIMENSIONS "E1" AND "D" DO NOT INCLUDE MOLD FLASH, PROTRUSIONS OR GATE BURRS. Land Pattern - SOT23 3L X Y DIM Z G Y C C E E1 G X Y Z DIMENSIONS INCHES MILLIMETERS (.087) .037 .075 .031 .039 .055 .141 (2.20) 0.95 1.90 0.80 1.00 1.40 3.60 E E1 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. 2004 Semtech Corp. 6 www.semtech.com SL05 through SL24 PROTECTION PRODUCTS Marking Codes Part Number Marking Code SL05 L05 SL12 L12 SL15 L15 SL24 L24 Ordering Information Part Number Lead Finish Qty per R eel R eel Size SL05.TC SnPb 3,000 7 Inch SL12.TC SnPb 3,000 7 Inch SL15.TC SnPb 3,000 7 Inch SL24.TC SnPb 3,000 7 Inch SL05.TCT Pb Free 3,000 7 Inch SL12.TCT Pb Free 3,000 7 Inch SL15.TCT Pb Free 3,000 7 Inch SL24.TCT Pb Free 3,000 7 Inch Contact Information Semtech Corporation Protection Products Division 200 Flynn Road, Camarillo, CA 93012 Phone: (805)498-2111 FAX (805)498-3804 2004 Semtech Corp. 7 www.semtech.com