RClamp3321P
Ultra-Low Capacitance
1-Line, 3.3V ESD protection
PROTECTION PRODUCTS - RailClamp
Description
The RClamp
®
3321P provides ESD protection for USB3.0,
HDMI1.3/1.4, and other high-speed ports. It may be
used to meet the ESD immunity requirements of IEC
61000-4-2. The RClamp3321P is designed to minimize
both the ESD peak clamping and the TLP clamping. The
dynamic resistance is minimized (0.47 Ohms typical) for
optimum protection of sensitive circuits. Maximum ca-
pacitance is only 0.35pF. This allows the RClamp3321P
to be used in applications operating in excess of 5GHz
without signal attenuation. These devices are manufac-
tured using Semtech’s proprietary low voltage technol-
ogy for superior characteritics at operating voltages up
to 3.3 volts.
The RClamp3321P is in a 2-pin SLP1006P2 package. It
measures 1.0 x 0.6 x 0.5mm. The leads are spaced at a
pitch of 0.65mm and are finished with lead-free NiPdAu.
Each device will protect one line operating at 3.3 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, HDMI and V-By-
One interfaces in portable devices.
Features
u
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)
u
u
u
u
u
u
u
Ultra-small package (1.0 x 0.6 x 0.5mm)
Protects one data or I/O line
Low capacitance: 0.35pF
Dynamic Resistance: 0.47 Ohms Typical
Low ESD clamping voltage
Operating voltage: 3.3V
Solid-state silicon-avalanche technology
Mechanical Characteristics
u
u
u
u
u
u
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
Applications
u
u
u
u
u
u
u
USB 3.0
HDMI 1.3/1.4
V-By-One
Display Port
MHL / MDDI
LVDS Interfaces
eSATA Interfaces
Package Dimensions
Schematic & Pin Configuration
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(
))&( <(<
))&( <&<
Nominal Dimensions (mm)
7/25/2013
1
SLP1006P2 (Bottom View)
www.semtech.com
RClamp3321P
PROTECTION PRODUCTS
Absolute Maximum Ratings
Rating
Peak Pulse Power (tp = 8/20µs)
Maximum Peak Pulse Current (tp = 8/20µs)
ESD per IEC 61000-4-2 (Air)
1
ESD per IEC 61000-4-2 (Contact)
1
Operating Temperature
Storage Temperature
Symbol
P
PK
I
PP
V
ESD
T
J
T
STG
Value
25
3
+/- 17
+/- 12
-55 to +125
-55 to +150
Units
Watts
Amps
kV
O
C
C
O
Electrical Characteristics (T=25
O
C unless otherwise specified)
Parameter
Symbol
Conditions
Min.
Typ.
Max.
Units
Reverse Stand-Off Voltage
Breakdown Voltage
Reverse Leakage Current
Clamping Voltage
Clamping Voltage
ESD Clamping Voltage
2
V
RWM
V
BR
I
R
V
C
V
C
V
C
V
C
V
TRIG
R
DYN
C
j
I
BR
= 1mA
V
RWM
= 3.3V
I
PP
= 1A, tp = 8/20µs
I
PP
= 4A, tp = 8/20µs
I
PP
= 4A,
tlp = 0.2/100ns
I
PP
= 16A,
tlp = 0.2/100ns
tlp = 0.2/100ns
tlp = 0.2 / 100ns
V
R
= 0V, f = 1MHz
5.5
7
10
9.5
10.5
8.8
3.3
8.5
50
10
13
V
V
nA
V
V
V
ESD Clamping Voltage
2
Trigger Voltage
2
Dynamic Resistance
2, 3
Junction Capacitance
14.5
8
0.47
0.22
0.35
V
V
Ω
pF
Notes
1)ESD gun return path connected to ESD ground reference plane.
2)TLP Settings: t
p
= 100ns, t
r
= 0.2ns, I
TLP
and V
TLP
sample window: t
1
= 70ns to t
2
= 90ns.
3) Dynamic resistance calculated from I
pp
= 4A to I
pp
= 16A using “Best Fit”
4) Device is electrically symmetrical
2013 Semtech Corporation.
2
www.semtech.com
RClamp3321P
PROTECTION PRODUCTS
Typical Characteristics
Non-Repetitive Peak Pulse Power vs. Pulse Time
1000
T
A
= 25
O
C
8x20us Peak Clamping Voltage vs Peak Current
20
T
A
= 25
O
C
Waveform 8x20us
Peak Pulse Power - P
PP
(W)
15
Peak Clamping Voltage - V
C
(V)
100
10
5
10
0
RC3321P_AR_8_20 Surge
DR040412-25
1
0.1
1
10
Pulse Duration - tp (µs)
100
1000
-5
0
1
2
3
Peak Pulse Current - I
PP
(A)
4
5
Capacitance vs. Temperature vs. Bias Voltage
0.8
TLP Characteristic
25
T
A
= 25
O
C
t
P
= 100ns
t
R
= 0.2ns
t
MEAS
= 70-90ns
R
DYN
= 0.47Ω
Typ. Both Directions
20
0.6
f = 1MHz
VR = 0V
VR = 3.3V
Junction Capacitance - C
J
(pF)
TLP Current (A)
15
0.4
10
5
0.2
0
RC3321P_AR_CJ
RC3321P_AR_TLP
0.0
-50
0
50
Temperature (
O
C)
100
150
-5
0
5
10
DUT Voltage (V)
15
20
ESD Clamping (+8kV Contact per IEC 61000-4-2)
140
120
T
A
= 25
O
C.
Waveform IEC61000-4-2 +8kV.
Measured with and corrected for 50Ω, 40dB Attenuator.
50Ω Scope Input Impedance, 2GHz BW.
ESD Gun Return connected to ESD Ground Plane.
ESD Clamping (-8kV Contact per IEC 61000-4-2)
20
0
Clamping Voltage - V
C
(V)
80
60
40
20
0
RC3321P_AR_P8_ESD
Clamping Voltage - V
C
(V)
100
-20
-40
-60
-80
-100
-120
RC3321P_AR_N8_ESD
T
A
= 25
O
C.
Waveform IEC61000-4-2 -8kV.
Measured with and corrected for 50Ω, 40dB Attenuator.
50Ω Scope Input Impedance, 2GHz BW.
ESD Gun Return connected to ESD Ground Plane
.
-20
-20
0
20
40
Time (ns)
60
80
100
-140
-20
0
20
40
Time (ns)
60
80
100
2013 Semtech Corporation.
3
www.semtech.com
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