PROTECTION PRODUCTS
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www.semtech.com
PROTECTION PRODUCTS - Z-Pak
TM
RClamp1821Z
Ultra Small RailClamp
®
1-Line ESD protection
Description
Features
Nominal Dimensions Schematic
Revision 1/7/2014
Applications
Mechanical Characteristics
High ESD withstand Voltage: +/-15kV (Contact),
+/-18kV (Air) per IEC 61000-4-2
Able to withstand over 1000 ESD strikes per IEC
61000-4-2 Level 4
Ultra-small
020020
020020
020
1 pack1 pack
1 pack1 pack
1 pack
ageage
ageage
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Protects one data or power line
Low reverse current: <5nA typical (VR=18V)
Working voltage: +/- 18V
Low capacitance: 0.8pF Maximum
Solid-state silicon-avalanche technology
SLP0603P2X3B package
Pb-Free, Halogen Free, RoHS/WEEE Compliant
Nominal Dimensions: 0.6 x 0.3 x 0.25 mm
Lead Finish: NiAu
Marking : Marking code + dot matrix date code
Packaging : Tape and Reel
RailClamp
®
TVS arrays are ultra low capacitance ESD
protection devices designed to protect high speed data
interfaces. They are designed to replace 0201 size mul-
tilayer varistors (MLVs) in portable applications such as
cell phones, notebook computers, and other portable
electronics. This device offers desirable characteristics
for board level protection including fast response time,
low operating and clamping voltage, and no device deg-
radation.
RClamp
®
1821Z has a maximum capacitance of only
0.8pF. This allows it to be used on circuits operating in
excess of 3GHz without signal attenuation.
RClamp1821Z is in a 2-pin SLP0603P2X3B package.
It measures 0.6 x 0.3 mm with a nominal height of only
0.25mm. Leads are finished with lead-free NiAu. Each
device will protect one line operating at 18 volts. It
gives the designer the flexibility to protect single lines in
applications where arrays are not practical. The
combination of small size and high ESD surge capability
makes them ideal for use in portable applications such
as cellular phones, digital cameras, and MP3 players.
Cellular Handsets & Accessories
Near Field Communication (NFC) lines
RF signal lines
FM Antenna
Digital Lines
USB VBus
0.32
0.62
0.22
0.400 BSC
0.250
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SLP0603P2X3B (Bottom View)
