PROTECTION PRODUCTS
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PROTECTION PRODUCTS - RailClamp
RClamp1521P
Ultra-Low Capacitance
1-Line ESD protection
Description Features
Dimensions Schematic & PIN Configuration
Revision 10/26/2007
The RailClamp family is a series of ultra low capacitance
Transient Voltage Suppressors (TVS) designed to protect
high speed data interfaces. This series has been specifi-
cally designed to protect sensitive components which are
connected to high-speed data and transmission lines
from overvoltage caused by ESD (electrostatic discharge),
CDE (Cable Discharge Events), and EFT (electrical fast
transients).
The RClampTM1521P has a maximum capacitance of
only 0.5pF. This allows it to be used on circuits operat-
ing in excess of 3GHz without signal attenuation. They
may be used to meet the ESD immunity requirements of
IEC 61000-4-2, Level 4 (±15kV air, ±8kV contact
discharge).
The RClamp1521P is in a 2-pin, RoHS/WEEE compliant,
SLP1006P2 package measuring 1.0 x 0.6 x 0.5mm.
The leads are spaced at a pitch of 0.65mm and feature
a lead-free finish. Each device will protect one high-
speed line operating at 15 volts. It gives the designer
the flexibility to protect single lines in applications
where arrays are not practical. The combination of
small size, low capacitance, and high ESD surge
capability makes them ideal for use in applications
such as cellular phones and high-power USB.
Applications
Mechanical Characteristics
Cellular Handsets & Accessories
USB Ports
PCI Express
Serial ATA
Transient protection for data lines to
IEC 61000-4-2 (ESD) ±15kV (air), ±8kV (contact)
IEC 61000-4-4 (EFT) 40A (tp = 5/50ns)
Cable Discharge Event (CDE)
Ultra-small package (1.0 x 0.6 x 0.5mm)
Protects one data or I/O line
Low capacitance: 0.3pF typical
Low clamping voltage
Low operating voltage: 15V
Solid-state silicon-avalanche technology
SLP1006P2 package
Molding compound flammability rating: UL 94V-0
Marking: Marking code
Packaging : Tape and Reel
Lead Finish: NiPdAu
RoHS/WEEE Compliant
SLP1006P2 (Bottom View)
Maximum Dimensions (mm)
0.65
0.50
0.60
1.0