AZ2225-01L
Transient Voltage Suppressing Device
For ESD/Transient Protection
Features
ESD Protection for 1 Line with Bi-directional.
Provide ESD protection for the protected line to
IEC 61000-4-2 (ESD) ±20kV (air), ±12kV (contact)
IEC 61000-4-4 (EFT) 40A (5/50ns)
IEC 61000-4-5 (Lightning) 7A (8/20µs)
Cable Discharge Event (CDE)
During transient conditions, the proprietary
clamping cells prevent over-voltage on the power
line or control/data lines, protecting any
downstream components.
AZ2225-01L is bi-directional and may be used on
lines where the signal swings above and below
ground.
AZ2225-01L may be used to meet the ESD
immunity requirements of IEC 61000-4-2, Level 4
(±15kV air,
±8kV
contact discharge).
Ultra-small SOD-323 package saves board
space.
Protect one I/O line or one power line
Fast turn-on and Low clamping voltage
Low operating voltage: 5V
Solid-state silicon-avalanche and active circuit
triggering technology
Green part avaliable
Circuit Diagram /
Pin Configuration
Applications
Computer Interfaces Protection
Microprocessors Protection
Serial and Parallel Ports Protection
Control Signal Lines Protection
Power lines on PCB Protection
Latchup Protection
1
Description
2
AZ2225-01L is a design which includes a
bi-directional surge rated clamping cell to protect
one power line, or one control line, or one low
speed data line in an electronic systems. The
AZ2225-01L has been specifically designed to
protect sensitive components which are
connected to power and control lines from
over-voltage damage and latch-up caused by
Electrostatic Discharging (ESD), Electrical Fast
Transients (EFT), Lightning, and Cable
Discharge Event (CDE).
AZ2225-01L is a unique design which includes
proprietary clamping cells in a single package.
Revision 2011/06/18
©2011 Amazing Micro.
1
www.amazingIC.com
SOD-323 (Top View)
AZ2225-01L
Transient Voltage Suppressing Device
For ESD/Transient Protection
SPECIFICATIONS
ABSOLUTE MAXIMUM RATINGS
PARAMETER
Peak Pulse Current (tp =8/20us)
Operating Supply Voltage (pin-1,-2 to pin-3)
ESD per IEC 61000-4-2 (Air)
ESD per IEC 61000-4-2 (Contact)
Lead Soldering Temperature
Operating Temperature
Storage Temperature
T
SOL
T
OP
T
STO
PARAMETER
I
PP
V
DC
V
ESD-1
RATING
8.5
6
±22
±15
260 (10 sec.)
-55 to +125
-55 to +150
o
o
o
UNITS
A
V
kV
C
C
C
ELECTRICAL CHARACTERISTICS
PARAMETER
Reverse Stand-Off
Voltage
Reverse Leakage
Current
Reverse
Breakdown Voltage
Clamping Voltage
Clamping Voltage
ESD Holding
Voltage
Channel Input
Capacitance
SYMBOL
V
RWM
I
Leak
V
BV
V
CL
V
CL
V
hold
T=25
o
C.
V
RWM
= 5V, T=25
o
C.
I
BV
= 1mA, T=25
o
C.
I
PP
=5A, tp=8/20us, T=25
o
C.
I
PP
=7A, tp=8/20us, T=25
o
C.
IEC 61000-4-2 6kV, T=25
o
C,
Contact mode.
V
R
= 0V, f = 1MHz, T=25
o
C.
6.1
7
8
10.5
CONDITIONS
MINI
TYP
MAX
5
2.5
9
8
9
UNITS
V
µA
V
V
V
V
C
IN
14
16.5
pF
Revision 2011/06/18
©2011 Amazing Micro.
2
www.amazingIC.com
AZ2225-01L
Transient Voltage Suppressing Device
For ESD/Transient Protection
Typical Characteristics
Clamping Voltage vs. Peak Pulse Current
12
11
10
Clamping Voltage (V)
9
8
7
6
5
4
3
2
1
0
5
6
7
8
9
Peak pulse Current (A)
Waveform
Parameters:
tr=8µs
µ
td=20µs
µ
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
-5
-4
-3
Typical Variation C
IN
vs V
IN
20
Transmission Line Pulsing (TLP) Measurement
f=1 MHz
15
10
5
0
V_pulse
Capacitance (pF)
-5
-10
-15
-20
Pulse from a
transmission line
TLP_I
100ns
+
TLP_V
-
DUT
-2
-1
0
1
2
3
4
5
-10
-5
0
5
10
Transmission Line Pulsing (TLP) Current (A)
Bias Voltage (V)
Transmission Line Pulsing (TLP) Voltage (V)
Revision 2011/06/18
©2011 Amazing Micro.
3
www.amazingIC.com
AZ2225-01L
Transient Voltage Suppressing Device
For ESD/Transient Protection
Applications Information
In order to obtain enough suppression of ESD
The AZ2225-01L is designed to protect one line
against System ESD/EFT/Lightning pulses by
clamping them to an acceptable reference. It
provides bi-directional protection.
The usage of the AZ2225-01L is shown in Fig. 1.
Protected line, such as data lines, control lines,
or power lines, is connected at pin 1. The pin 2 is
connected to a ground plane on the board. Since
AZ2225-01L is bi-directional, these connections
can be reversed (protected line to pin 2, ground
to pin 1). In order to minimize parasitic
inductance in the board traces, all path lengths
connected to the pins of AZ2225-01L should be
kept as short as possible.
Input
Output
induced transient, good circuit board is critical.
Thus, the following guidelines are recommended:
Minimize the path length between the
protected lines and the AZ2225-01L.
Place the AZ2225-01L near the input
terminals or connectors to restrict transient
coupling.
The ESD current return path to ground
should be kept as short as possible.
Use ground planes whenever possible.
NEVER route critical signals near board
edges and near the lines which the ESD
transient easily injects to.
V
BR
Transient
Voltage
-V
BR
V
BR
Normal
Operation
-V
BR
gnd
V
CL
gnd
-V
CL
gnd
gnd
1
Protected
Devices
2
Fig. 1
Revision 2011/06/18
©2011 Amazing Micro.
4
www.amazingIC.com
AZ2225-01L
Transient Voltage Suppressing Device
For ESD/Transient Protection
Mechanical Details
SOD-323
PACKAGE DIAGRAMS
TOP VIEW
Symbol
A
A1
A2
b
C
D
E
E1
L
SIDE VIEW
L1
θ
PACKAGE DIMENSIONS
Millimeters
MIN.
0.8
0
0.8
0.25
0.08
1.2
1.6
2.5
0.25
0
o
MAX.
1.0
0.1
0.9
0.35
0.15
1.4
1.8
2.7
0.4
8
o
Inches
MIN.
0.031
0.000
0.031
0.010
0.003
0.047
0.063
0.098
0.010
0
o
MAX.
0.039
0.004
0.035
0.014
0.006
0.055
0.071
0.106
0.016
8
o
0.475REF
0.019 REF
END VIEW
Revision 2011/06/18
©2011 Amazing Micro.
5
www.amazingIC.com
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