RClamp1851Y
Ultra Small RailClamp®
1-Line, 18V ESD Protection
PROTECTION PRODUCTS - RailClamp®
Features
Description
RailClamp® TVS diodes are ultra low capacitance devices
designed to protect sensitive electronics from damage
or latch-up due to ESD, EFT, and EOS. They are designed
for use on high speed ports in applications such as cell
phones, notebook computers, and other portable elec-
tronics. These devices offer desirable characteristics for
board level protection including fast response time, low
operating and clamping voltage, and no device degrada-
tion.
High ESD withstand Voltage: +/-18kV (Contact/Air)
per IEC 61000-4-2
Able to withstand over 1000 ESD strikes per
IEC 61000-4-2 Level 4
Ultra-small 0201 package
Protects one high speed data line
Working voltage: +/- 18V
Low capacitance: 0.35pF typical
Extremely low dynamic resistance: <0.10 Ohms
(Typ)
RClamp®1851Y is specifically designed for protection of
Near Field Communications (NFC) interfaces. It features
extremely good ESD protection characteristics including
a low typical dynamic resistance of <0.1 Ohms, low peak
ESD clamping voltage, and high ESD withstand voltage
(+/-18kV contact per IEC 61000-4-2). Low typical ca-
pacitance (0.35pF at VR=0V) means that RClamp1851Y
will not create harmonic distortion in the RF signal. This
device is bidirectional and has a working voltage of 18V
for use on NFC resonator circuits without signal clipping.
Low ESD clamping voltage
Solid-state silicon-avalanche technology
Mechanical Characteristics
SLP0603P2X3E 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
Packaging: Tape and Reel
RClamp1851Y is in a 2-pin SLP0603P2X3E package
measuring 0.6 x 0.3 mm with a nominal height of
0.25mm. Leads are finished with lead-free NiAu. The
combination of working voltage, low dynamic resis-
tance, and low capacitance makes this device ideal for
use on NFC antenna ciruits, signal lines, and FM
antennas in portable devices.
Applications
Near Field Communication (NFC) lines
RF signal lines
FM Antenna
Nominal Dimensions
Schematic
0.600
0.220
0.300
1
0.160
0.355 BSC
2
0.250
Nominal Dimensions (in mm)
SLP0603P2X3E (Bottom View)
www.semtech.com
Revision 1/27/2014
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