Document
SMDA05C THRU SMDA24C
Bidirectional TVS Array for Protection of Four Lines
PROTECTION PRODUCTS Description
The SMDAxxC series of TVS arrays are designed to provide bidirectional protection for sensitive electronics from damage or latch-up due to ESD, lightning and other voltage-induced transient events. Each device will protect four data or I/O lines. 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 low profile SO-8 package allows the user to protect up to four independent lines with one package. The SMDAxxC series is suitable protection for sensitive semiconductors components such as microprocessors, ASICs, transceivers, transducers, and CMOS memory. The SMDAxxC series devices may be used to meet the ESD immunity requirements of IEC 61000-4-2, level 4 for air and contact discharge.
Features
u Transient protection for 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) Bidirectional protection Small SO-8 package Protects four I/O lines Working voltages: 5V, 12V, 15V and 24V Low leakage current Low operating and clamping voltages Solid-state silicon avalanche technology
u u u u u u u u u u u u u u u u u u
Mechanical Characteristics
JEDEC SO-8 package Molding compound flammability rating: UL 94V-0 Marking : Part number, date code, logo Packaging : Tube or Tape and Reel per EIA 481
Applications
Data and I/O Lines Microprocessor based equipment Notebooks, Desktops, and Servers Instrumentation LAN/WAN equipment Peripherals Serial and Parallel Ports
Schematic & PIN Configuration
1
8
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7
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5
SO-8 (Top View)
Revision 9/2000 1 www.semtech.com
SMDA05C THRU SMDA24C
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 TL TJ TSTG Symbo l Pp k Value 300 >25 260 (10 sec.) -55 to +125 -55 to +150 Units Watts kV °C °C °C
Electrical Characteristics
SMDA05C 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 I PP 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 V R = 0V, f = 1MHz 6 20 9.8 11 17 350 Co nd itio ns Minimum Typ ical Maximum 5 Units V V µA V V A pF
SMDA12C 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 I PP 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 V R = 0V, f = 1MHz 13.3 1 19 24 12 120 Co nd itio ns Minimum Typ ical Maximum 12 Units V V µA V V A pF
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SMDA05C THRU SMDA24C
PROTECTION PRODUCTS Electrical Characteristics (Continued)
SMDA15C 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 V RWM V BR IR VC VC I PP 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 V R = 0V, f = 1MHz 16.7 1 24 30 10 75 Co nd itio ns Minimum Typ ical Maximum 15 Units V V µA V V A pF
SMDA24C 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 I PP 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 V R = 0V, f = 1MHz 26.7 1 43 55 5 50 Co nd itio ns Minimum Typ ical Maximum 24 Units V V µA V V A pF
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SMDA05C THRU SMDA24C
PROTECTION PRODUCTS Typical Characteristics
Non-Repetitive Peak Pulse Power vs. Pulse Time
10 110 100 Peak Pulse Power - P PP (kW) 90 % of Rated Power or IPP 80 70 60 50 40 30 20 10 0.01 0.1 1 10 Pulse Duration - tp (µs) 100 1000 0 0 25 50 75 100 125 150 Ambient Temperature - TA (oC) 1
Power Derating Curve
0.1
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 (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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SMDA05C THRU SMDA24C
PROTECTION PRODUCTS Applications Information
Device Connection for Protectio.