The AR0502S1 is a 2-line ultra-low capacitance TVS di-
ode array, utilizing leading monolithic silicon technology
to provide fast response time and low ESD clamping volt-
age, making this device an ideal solution for protecting
voltage sensitive high-speed data lines. The AR0502S1
has a very low capacitance with a typical value at 0.3pF,
and complies with the IEC 61000-4-2 (ESD) with ±25kV
air and ±20kV contact discharge. It is assembled into a 4-
pin SOT-143 lead-free package. The small size, very low
capacitance and high ESD surge protection make
AR0502S1 an ideal choice to protect cell phone, digital
video interfaces, high speed data ports, and many other
portable applications.
Mechanical Characteristics
Package: SOT-143
Lead Finish: Matte Tin
Case Material: “Green” Molding Compound.
Moisture Sensitivity: Level 3 per J-STD-020
Terminal Connections: See Diagram Below
Marking Information: See Below
Applications
Cellular Handsets and Accessories
Notebooks and Handhelds
Personal Digital Assistants
Portable Instrumentation
Digital Cameras
Peripherals
Audio Players, Keypads, Side Keys, LCD
USB 2.0
Features
Ultra low capacitance: 0.3pF typical
Ultra low leakage: nA level
Operating voltage: 5V
Low clamping voltage
4-pin SOT-143 package
Protects two data lines and one power line
Complies with following standards:
– IEC 61000-4-2 (ESD) immunity test
Air discharge: ±25kV
Contact discharge: ±20kV
– IEC61000-4-5 (Lightning) 5A (8/20μs)
RoHS Compliant
Marking Information
4
3
R0502
1
2
R0502 = Device Marking Code
Pin1 is ground
Ordering Information
Dimensions and Pin Configuration
Pin 4
Part Number
1
Pin 2
Pin 3
Packaging
3000/Tape & Reel
Reel Size
7 inch
4
AR0502S1
2
Pin 1
3
Circuit Diagram
Pin Schematic
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AR0502S1
Absolute Maximum Ratings (T
A
=25°C unless otherwise specified)
Parameter
Peak Pulse Power (8/20µs)
Peak Pulse Current (8/20µs)
ESD per IEC 61000−4−2 (Air)
ESD per IEC 61000−4−2 (Contact)
Operating Temperature Range
Storage Temperature Range
Symbol
Ppk
I
PP
V
ESD
T
J
Tstg
Value
75
5
±25
±20
−55 to +125
−55 to +150
Unit
W
A
kV
°C
°C
Electrical Characteristics (T
A
=25°C unless otherwise specified)
Parameter
Reverse Working Voltage
Breakdown Voltage
Reverse Leakage Current
Clamping Voltage
Clamping Voltage
Junction Capacitance
Junction Capacitance
Note 1: I/O pins are pin 2 & 3
Symbol
V
RWM
V
BR
I
R
V
C
V
C
C
J
C
J
Min
Typ
Max
5
Unit
V
V
Test Condition
Any I/O pin to ground
I
T
= 1mA, any
I/O pin to ground
V
RWM
= 5V,
any I/O pin to ground
I
PP
= 1A (8 x 20µs pulse),
any I/O
pin to ground
I
PP
= 5A (8 x 20µs pulse),
any I/O
pin to ground
VR = 0V, f = 1MHz, between I/O
pins
VR = 0V, f = 1MHz, any I/O pin to
ground
6
0.5
10
15
0.3
0.4
0.8
µA
V
V
pF
pF
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AR0502S1
Typical Performance Characteristics (T
A
=25°C unless otherwise Specified)
Junction Capacitance vs. Reverse Voltage
Peak Pulse Power vs. Pulse Time
Clamping Voltage vs. Peak Pulse Current
Power Derating Curve
8 X 20μs Pulse Waveform
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Note：Data is taken with a 10x attenuator
ESD Clamping Voltage
8 kV Contact per IEC61000−4−2
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AR0502S1
AR0502S1 on USB Port Application
The AR0502S1 can be used to protect the USB port on the monitors, computers, peripherals or portable systems.
The ESD protection scheme for single USB ports is shown below figure, the voltage bus (VBUS) of USB port is con
nected to the power pin (pin4) of AR0502S1. Each data line (D+/D-) of USB port is connected to the ESD protection
pin (pin2/pin3) of AR0502S1. When ESD voltage pulse appears on the data line, the ESD pulse current will be con
ducted by AR0502S1 away from the USB controller chip. In addition, the ESD pulse current also can be conducted
by AR0502S1 away from the USB controller chip when the ESD voltage pulse appears on the voltage bus (VBUS) of
USB port. Therefore, the data lines (D+/D-) and voltage bus (VBUS) of two USB ports are complementally protected
with one AR0502S1.
V
BUS
1
4
USB
Contr olle r
R
T
R
T
GND
2
3
V
BUS
D+
D
_
USB
Port
AR0502S1
GND
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AR0502S1
SOT-143 Package Outline Drawing
MILLIMETERS
SYS
YM
MIN
0.90
0.00
0.90
0.30
0.75
0.08
2.80
1.20
2.25
1.80
0.30
0°
NOM
-
0.05
-
0.40
-
-
2.90
0.20 Typ
1.30
2.40
0.95 Typ
1.90
0.55 Ref
0.40
-
MAX
1.15
0.10
1.05
0.50
0.90
0.15
3.00
1.40
2.55
2.00
0.50
8°
A
A1
A2
b
b1
c
D
d
E
E1
e
e1
L
L1
Θ
Suggested Land Pattern
Unit(mm)
Contact Information
Applied Power Microelectronics Co., Ltd.
Website: http://www.appliedpowermicro.com
Email: sales@appliedpowermicro.com
Phone: +86 (0519) 8399 3606
Applied Power Microelectronics Co., Ltd. (APM) reserves the right to make changes to the product specification and data in this document without notice. APM makes no warranty, representation or
guarantee regarding the suitability of its products for any particular purpose, nor does APM assume any liability arising from the application or use of any products or circuits, and specifically dis-
claims any and all liability, including without limitation special, consequential or incidental damages.
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