SR12.TCT Semtech, SR12.TCT Datasheet

IC TVS ARRAY 2-LINE 12V SOT-143

SR12.TCT

Manufacturer Part Number
SR12.TCT
Description
IC TVS ARRAY 2-LINE 12V SOT-143
Manufacturer
Semtech
Series
RailClamp®r
Datasheet

Specifications of SR12.TCT

Voltage - Reverse Standoff (typ)
12V
Voltage - Breakdown
13.3V
Power (watts)
500W
Polarization
2 Channel Array - Unidirectional
Mounting Type
Surface Mount
Package / Case
SOT-143, SOT-143B, TO-253AA
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
SR12TR

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RailClamps are surge rated diode arrays designed to
protect high speed data interfaces. The SR12 has been
specifically designed to protect sensitive components
which are connected to data and transmission lines from
overvoltages caused by ESD (electrostatic discharge), EFT
(electrical fast transients), and lightning.
The unique design of the SR12 incorporates four surge
rated, low capacitance steering diodes and a TVS diode
in a single package. During transient conditions, the
steering diodes direct the transient to either the positive
side of the power supply line or to ground. The internal
TVS diode prevents over-voltage on the power line,
protecting any downstream components.
The low capacitance array configuration allows the user
to protect two high-speed data or transmission lines.
The low inductance construction minimizes voltage
overshoot during high current surges.
Revision 04/11/05
PROTECTION PRODUCTS
Description
Circuit Diagram
Pin 2
Pin 4
Pin 1
Pin 3
1
Features
Mechanical Characteristics
Applications
Low Capacitance TVS Diode Array
Schematic & PIN Configuration
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) 0.5kV, 12A (8/20µs)
Array of surge rated diodes with internal TVS Diode
Protects two I/O lines
Operating Voltage: 12 volts
Low capacitance (5pF typical) for high-speed
interfaces
Low clamping voltage
Solid-state silicon-avalanche technology
JEDEC SOT-143 package
UL 497B listed
Molding compound flammability rating: UL 94V-0
Marking : R12
Packaging : Tape and Reel per EIA 481
RoHS/WEEE Compliant
ADSL
Industrial Electronics
RS-422 Interfaces
Portable Electronics
Microcontroller Input Protection
WAN/LAN Equipment
1
2
SOT-143 (Top View)
4
3
RailClamp
www.semtech.com
SR12

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SR12.TCT Summary of contents

Page 1

... Molding compound flammability rating: UL 94V-0 Marking : R12 Packaging : Tape and Reel per EIA 481 RoHS/WEEE Compliant Applications ADSL Industrial Electronics RS-422 Interfaces Portable Electronics Microcontroller Input Protection WAN/LAN Equipment Schematic & PIN Configuration 1 2 SOT-143 (Top View) 1 SR12 RailClamp 4 3 www.semtech.com ...

Page 2

... PROTECTION PRODUCTS Absolute Maximum Rating µ µ Electrical Characteristics 2005 Semtech Corp µ ° µ µ www.semtech.com SR12 ° C ° C ° µ ...

Page 3

... Non-Repetitive Peak Pulse Power vs. Pulse Time 10 1 0.1 0.01 0 Pulse Duration - tp (µs) Pulse Waveform 110 100 Time (µs) Forward Voltage vs. Forward Current Forward Current - I 2005 Semtech Corp. 110 100 100 1000 Clamping Voltage vs. Peak Pulse Current 33 Waveform 30 Parameters 8µ 20µ -10 -12 Waveform Parameters: - µ µ ...

Page 4

... During positive duration ESD events, the top diode will be forward biased when the voltage on the protected line exceeds the reference voltage plus the V F 2005 Semtech Corp. Data Line and Power Supply Protection Using Vcc as reference ) the steering F ...

Page 5

... The RailClamp is designed to overcome the inherent disadvantages of using discrete signal diodes for ESD suppression. The RailClamp’s integrated TVS diode helps to mitigate the effects of parasitic inductance in 2005 Semtech Corp. of the diode. At first Figure 1 - “Rail o-Rail” Pr Figure 1 - “Rail- Figure 1 - “Rail- Figure 1 - “ ...

Page 6

... RailClamp are low capacitance, fast switching devices that are rated to handle transient currents and main- tain excellent forward voltage characteristics. Typical Applications 2005 Semtech Corp. 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 ...

Page 7

... OR GATE BURRS. 4. REFERENCE JEDEC STD TO-253, VARIATION D. Land Pattern - SOT-143 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. 2005 Semtech Corp. H GAUGE PLANE SEATING PLANE 0. DETAIL A SIDE VIEW 4X ccc C ...

Page 8

... PROTECTION PRODUCTS Marking Codes Ordering Information Contact Information Phone: (805)498-2111 FAX (805)498-3804 2005 Semtech Corp Semtech Corporation Protection Products Division 200 Flynn Rd., Camarillo, CA 93012 8 SR12 www.semtech.com ...

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