Document
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 (8/20µs) 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 = 8/20µ 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=25°C IPP = 1A , tp = 8/20µ s IPP = 5A , tp = 8/20µ s tp = 8/20µ 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 µA 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=25°C IPP = 1A , tp = 8/20µ s IPP = 5A , tp = 8/20µ s tp = 8/20µ 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
µA V V A pF
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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=25°C IPP = 1A , tp = 8/20µ s IPP = 5A , tp = 8/20µ s tp = 8/20µ 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 µA 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=25°C IPP = 1A , tp = 8/20µ s IPP = 5A , tp = 8/20µ s tp = 8/20µ 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 µA V V A pF
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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 (µ 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 (µs) 20 25 30 td = IPP/2 e
-t
Waveform Parameters: tr = 8µs td = 20µs
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
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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 high.