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SRDA12-4 Datasheet Preview

SRDA12-4 Datasheet

Low Capacitance TVS Diode Array

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PROTECTION PRODUCTS - RailClamp®
Description
RailClamps are surge rated diode arrays designed to
protect high speed data interfaces. The SRDA series
has been specifically designed to protect sensitive
components which are connected to data and trans-
mission lines from overvoltage caused by electrostatic
discharge (ESD), electrical fast transients (EFT), and
lightning.
The unique design incorporates surge rated, low
capacitance steering diodes and a TVS diode in a
single package. During transient conditions, the
steering diodes direct the transient current to ground
via the internal low voltage TVS. The TVS diode clamps
the transient voltage to a safe level. The low capaci-
tance array configuration allows the user to protect up
to four high-speed data lines. The SRDA05-4 may be
used to protect lines operating up to 5 volts while the
SRDA12-4 may be used on lines operating up to 12
volts.
These devices are in a 8-pin SOIC package. They are
available with a SnPb or RoHS/WEEE compliant matte
tin lead finish. The high surge capability (Ipp=25A,
tp=8/20μs) means it can be used in high threat
environments in applications such as CO/CPE equip-
ment, telecommunication lines, and video lines.
SRDA05-4 and SRDA12-4
RailClamp®
Low Capacitance TVS Diode Array
Features
‹ 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) 24A (8/20μs)
‹ Array of surge rated diodes with internal TVS diode
‹ Protects four I/O lines
‹ Low capacitance (<15pF) for high-speed interfaces
‹ Low operating and clamping voltages
‹ Solid-state technology
Mechanical Characteristics
‹ JEDEC SOIC-8 package
‹ Lead Finish: SnPb or Matte Sn
‹ Molding compound flammability rating: UL 94V-0
‹ Marking : Part number, date code, logo
‹ Packaging : Tape and Reel per EIA 481
Applications
‹ USB Power and Data Line Protection
‹ T1/E1 secondary IC Side Protection
‹ T3/E3 secondary IC Side Protection
‹ HDSL, SDSL secondary IC Side Protection
‹ Video Line Protection
‹ Microcontroller Input Protection
‹ Base stations
‹ I2C Bus Protection
Circuit Diagram
Schematic and PIN Configuration
REF1
I/O 1
I/O 2
I/O 3
I/O 4
REF2
Revision 8/21/07
I/O 1 1
REF 1 2
REF 1 3
I/O 2 4
1
8 REF 2
7 I/O 4
6 I/O 3
S0-8 (Top View)
5 REF 2
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Semtech

SRDA12-4 Datasheet Preview

SRDA12-4 Datasheet

Low Capacitance TVS Diode Array

No Preview Available !

SRDA05-4 and SRDA12-4
PROTECTION PRODUCTS
Absolute Maximum Rating
Rating
Peak Pulse Power (tp = 8/20μs)
Peak Forward Voltage (IF = 1A, tp=8/20μs)
Lead Soldering Temperature
Operating Temperature
Storage Temperature
Electrical Characteristics (T=25oC)
Symbol
Ppk
VFP
TL
TJ
TSTG
Value
500
1.5
260 (10 sec.)
-55 to +125
-55 to +150
Units
Watts
V
°C
°C
°C
SRDA05-4
Parameter
Reverse Stand-Off Voltage
Reverse Breakdown Voltage
Reverse Leakage Current
Clamping Voltage
Clamping Voltage
Clamping Voltage
Peak Pulse Current
Junction Capacitance
Symbol
VRWM
VBR
IR
VC
VC
VC
IPP
Cj
Conditions
Minimum
It = 1mA
VRWM = 5V, T=25°C
IPP = 1A, tp = 8/20μs
IPP = 10A, tp = 8/20μs
IPP = 25A, tp = 8/20μs
tp = 8/20μs
Between I/O pins and
Ground
VR = 0V, f = 1MHz
Between I/O pins
VR = 0V, f = 1MHz
6
Typical
8
4
Maximum
5
10
9.8
12
20
25
15
Units
V
V
μA
V
V
V
A
pF
pF
© 2007 Semtech Corp.
2
www.semtech.com


Part Number SRDA12-4
Description Low Capacitance TVS Diode Array
Maker Semtech
Total Page 11 Pages
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