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One-line Bi-directional TVS Diode
AOZ8221
General Description
The AOZ8221 is a one-line bi-directional transient voltage suppressor diode designed to protect voltage sensitive electronics from high transient conditions and ESD. This device incorporates one TVS diode in an ultra-small SOD523 package. It may be used to meet the ESD immunity requirements of IEC 61000-4-2, Level 4 (15kV air, 8kV contact discharge). The AOZ8221 comes in an RoHS compliant SOD523 package and is rated over a -40C to +85C ambient temperature range. The ultra-small 1.6 x 0.8 x 0.6mm SOD523 package makes it ideal for applications where PCB space is a premium. The small size and high ESD protection makes it ideal for protecting voltage sensitive electronics from high transient conditions and ESD.
Features
ESD protection for high-speed data lines: - Exceeds: IEC 61000-4-2 (ESD) 24kV (air), 24kV (contact) - Human Body Model (HBM) 30kV

Small package saves board space Low insertion loss Low clamping voltage Low operating voltage: 5.0V Pb-free device
Applications

Portable handheld devices Keypads, data lines, buttons Notebook computers Digital Cameras Portable GPS MP3 players
Typical Application
Signal Line
Pin Configuration
Bidirection Protection of Single Line
Rev. 1.7 January 2009
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Page 1 of 6
AOZ8221
Ordering Information
Part Number
AOZ8221NI-05L
Ambient Temperature Range
-40C to +85C
Package
SOD523
Environmental
RoHS Compliant Green Product
All AOS products are offered in packages with Pb-free plating and compliant to RoHS standards. Parts marked as Green Products (with "L" suffix) use reduced levels of Halogens, and are also RoHS compliant. Please visit www.aosmd.com/web/quality/rohs_compliant.jsp for additional information.
Absolute Maximum Ratings
Exceeding the Absolute Maximum ratings may damage the device.
Parameter
VP - VN Peak Pulse Current (IPP), tP = 8/20s Storage Temperature (TS) ESD Rating per IEC61000-4-2, ESD Rating per IEC61000-4-2, ESD Rating per Human Body Contact(1) Air(1) 5V 5A
Rating
-65C to +150C 24kV 24kV 30kV
Model(2)
Notes: 1. IEC 61000-4-2 discharge with CDischarge = 150pF, RDischarge = 330. 2. Human Body Discharge per MIL-STD-883, Method 3015 CDischarge = 100pF, RDischarge = 1.5k.
Maximum Operating Ratings
Parameter
Junction Temperature (TJ)
Rating
-40C to +85C
Electrical Characteristics
TA = 25C unless otherwise specified.
Symbol
IPP VCL VRWM IR VBR
Parameter
Maximum Reverse Peak Pulse Current Clamping Voltage @ IPP Working Peak Reverse Voltage Maximum Reverse Leakage Current @ VRWM Breakdown Voltage @ IT
Symbol
IT IF VF Ppk CJ Test Current
Parameter
Forward Current Forward Voltage @ IF Peak Power Dissipation Max. Capacitance @ VR = 0 and f = 1MHz
Electrical Characteristics
TA = 25C unless otherwise noted, VF = 0.9V Max. @ IF = 10mA for all types
Device
AOZ8221NI-05L
Device Marking
H
VRWM (V) Max.
5.0
VBR (V) Max.
6.0
IR (A) Max.
0.1
VF (V) Typ.
1.0
VCL Max. IPP = 1A
11.00
IPP = 5A
13.00
IPP = 12A
16.00
CJ (pF) Typ.
13
Rev. 1.7 January 2009
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Page 2 of 6
AOZ8221
Typical Performance Characteristics
Clamping Voltage vs. Peak Pulse Current
20 Clamping Voltage, VCL (V) 18 Insertion Loss (dB) 16 14 12 10 8 (tperiod = 100ns, tr = 1ns) 5 0 -5 -10 -15 -20 -25
I/O - Gnd Insertion Loss (S21) vs. Frequency
(Vp = 3.3V)
0
2
4
6
8
10
12
1
10
100 Frequency (MHz)
1000
10000
Peak Pulse Current, IPP (A)
Capacitance vs. Reverse Bias
16 14
Input Capacitance (pF)
12 10 8 6 4 2 0 1.0 2.0 3.0 4.0 5.0
Input Voltage (V)
Rev. 1.7 January 2009
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Page 3 of 6
AOZ8221
Package Dimensions, SOD523
E1 L b D
B
E
A
aaa
CAB
TOP VIEW
BOTTOM VIEW
View `C'
A
C Seating Plane
A1
SIDE VIEW
c
VIEW `C'
RECOMMENDED LAND PATTERN
0.40 1.40
Dimensions in millimeters
Symbols A A1 b c D E E1 L aaa Min. 0.50 0.00 0.25 0.07 0.70 1.10 1.50 0.25 Nom. 0.60 -- 0.30 -- 0.80 1.20 1.60 0.30 0.08 Max. 0.70 0.05 0.35 0.20 0.90 1.30 1.70 0.40
Dimensions in inches
Symbols A A1 b c D E E1 L aaa Min. 0.020 0.00 0.010 0.003 0.028 0.043 0.059 0.010 Nom. 0.024 -- 0.012 -- 0.031 0.047 0.063 0.012 0.003 Max. 0.028 0.002 0.014 0.008 0.035 0.051 0.067 0.016
0.40
UNIT: mm
Notes: 1. All Dimensions are in millimeters. 2. Dimensions are inclusive of plating. 3. Controlling dimension is millimeter, converted inch dimensions are not necessarily exact. 4. The cathode mark is optional. 5. Package body sizes exclude mold flash and gate burrs. Mold flash at the non-lead sides should be less than 3 mils each.
Rev. 1.7 January 2009
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Page 4 of 6
AOZ8221
Tape and Reel Dimensions, SOD523
Tape
B - B' Section
K0 B1 Max. 2 B0 P0 T A0 A1 Max 2 E3 E2 E
P1
P2
D0
D1 E1
UNIT: mm
A - A' Section
T 0.18 0.1 B0 1.95 0.1 B1 1.4 0.1 A0 0.9 0.1 A1 0.39 0.1 K0 0.73 0.1 D0 o1.5 0.1 D1 o0.50 0.05 E 8.0 0.2 E1 1.75 0.1 E2 3.5 0.05 E3 2.75 P0 2.0 0.1
Feeding Direction
P1 4.0 0.1 P2 2.0 0.05
Package SOD523
Reel
W1 S
G N
K
V H R
Arbor Hole Detail A Back View
W
Section: B - B'
UNIT: mm
Tape Size 8mm
Reel Size o180
M o180.00 0.5
N o60.50
W 9.0 0.30
W1 11.40 1.00
H o13.00
+0.50/-2.0
K 10.60
S 2.00 0.50
G o9.00
R 5.00
V 18.00
Leader/Trailer and Orientation
Empty
Cathode
Trailer Tape 300mm min.
Rev. 1.7 January 2009
Components Tape Orientation in Pocket
Leader Tape 500mm min.
Page 5 of 6
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AOZ8221
Part Marking
HM
Product Number Code
Date Code
This datasheet contains preliminary data; supplementary data may be published at a later date. Alpha & Omega Semiconductor reserves the right to make changes at any time without notice. LIFE SUPPORT POLICY ALPHA & OMEGA SEMICONDUCTOR PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR SYSTEMS. As used herein: 1. Life support devices or systems are devices or systems which, (a) are intended for surgical implant into the body or (b) support or sustain life, and (c) whose failure to perform when properly used in accordance with instructions for use provided in the labeling, can be reasonably expected to result in a significant injury of the user. 2. A critical component in any component of a life support, device, or system whose failure to perform can be reasonably expected to cause the failure of the life support device or system, or to affect its safety or effectiveness.
Rev. 1.7 January 2009
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