PROTECTION PRODUCTS
1
www.semtech.com
PRELIMINARY
PROTECTION PRODUCTS - RailClamp
®®
®®
®
RClamp3521P
Ultra-Low Capacitance
1-Line, 3.5V ESD protection
Description
Features
Dimensions Schematic & Pin Configuration
Revision12/13/2013
Applications
Mechanical Characteristics
Transient protection for data lines to
IEC 61000-4-2 (ESD) ±17kV (air), ±12kV (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: 0.40pF
Dynamic Resistance: 0.47 Ohms Typical
Low ESD clamping voltage
Operating voltage: 3.5V
Solid-state silicon-avalanche technology
SLP1006P2 package
Molding compound flammability rating: UL 94V-0
Marking: Marking code
Packaging: Tape and Reel
Lead Finish: NiPdAu
Pb-Free, Halogen Free, RoHS/WEEE Compliant
SLP1006P2 (Bottom View)
Nominal Dimensions (mm)
USB 2.0 / USB 3.0
V-By-One
Display Port
MHL / MDDI
LVDS Interfaces
eSATA Interfaces
RClamp
®
3521P provides ESD protection for USB3.0
and other high-speed ports. It may be used to meet
the ESD immunity requirements of IEC 61000-4-2.
RClamp3521P is designed to minimize both the ESD
peak clamping and the TLP clamping. The dynamic
resistance is minimized (0.47 Ohms typical) for opti-
mum protection of sensitive circuits. Maximum capaci-
tance is only 0.40pF. This allows the RClamp3521P to
be used in applications operating in excess of 5GHz
without appreciable signal attenuation. These devices
are manufactured using Semtech’s proprietary low
voltage technology for superior electrical characteritics.
RClamp3521P is in a 2-pin SLP1006P2 package. It mea-
sures 1.0 x 0.6 x 0.5mm. Leads are spaced at a pitch of
0.65mm and are finished with lead-free NiPdAu. Each
device will protect one line operating up to 3.5 volts.
The combination of low peak ESD clamping, low dynamic
resistance, and low capacitance makes this device suit-
able for applications such as USB 3.0, audio and V-By-
One interfaces in portable devices.
0.65
0.50
0.60
1.0
2
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