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uClamp3304A
μClamp TM
4-Line ESD protection Array
PROTECTION PRODUCTS - MicroClamp TM
requires less than 2.9mm of PCB area
Description
The μ Clamp TM series of TVS arrays are designed to pro-
tect sensitive electronics from damage or latch-up due
to ESD. They are designed for use in applications where
board space is at a premium. Each device requires less
than 2.9mm 2 of PCB area and will protect up to four
lines. They are unidirectional devices and may be used
on lines with positive signal polarities.
The μ clamp TM 3304A is constructed using Semtech’s pro-
prietary EPD process technology. The EPD process pro-
vides low standoff voltages with significant reductions in
leakage currents and capacitance over silicon-avalanche
diode processes. They feature a true operating voltage
of 3.3 volts for superior protection when compared to
traditional pn junction devices.
These devices may be used to meet the immunity re-
quirements of IEC 61000-4-2, level 4. They offer desir-
able characteristics for board level protection including
fast response time, low operating and clamping voltage,
and no device degradation. The small SC89 package
makes them ideal for use in portable electronics such as
cell phones, PDAs, notebook computers, and digital cam-
eras.
Dimensions
1.70
0.50
Features
Transient protection for data lines to
IEC 61000-4-2 (ESD) ±15kV (air), ±8kV (contact)
IEC 61000-4-4 (EFT) 40A (5/50ns)
Protects four unidirectional I/O lines
Ultra-small SC-89 package (1.7 x 1.7 x 0.6mm)
2
Working voltage: 3.3V
Low leakage current
Low operating and clamping voltages
Solid-state silicon-avalanche technology
Mechanical Characteristics
SC-89 (SOT-666) package
Molding compound flammability rating: UL 94V-0
Marking: Marking Code
Lead Finish: Matte Tin
RoHS Compliant
Weight: 2.9mg (typical)
Packaging: Tape and Reel per EIA 481
Applications
Cellular Handsets and Accessories
Cordless Phones
Notebooks and Handhelds
Portable Instrumentation
Digital Cameras
Peripherals
MP3 Players
Schematic & PIN Configuration
0.30
0.60
1.25
1.70
Maximum Dimensions (mm)
SC-89 (Top View)
Revision 02/25/05
1
www.semtech.com
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