Datasheet UM5084 Rev04

UM5084
Low Capacitance Bidirectional Single Line
TVS Protection Diode
UM5084 DFN2 1.0×0.6
General Description
The UM5084 TVS protection diode is designed to replace multilayer varistors (MLVs) in portable
applications such as cell phones, notebook computers, and PDA’s. They feature large
cross-sectional area junctions for conducting high transient currents, offer desirable electrical
characteristics for board level protection, such as fast response time, lower operating voltage,
lower clamping voltage and no device degradation when compared to MLVs. The UM5084 TVS
protection diode protects sensitive semiconductor components from damage or upset due to
electrostatic discharge (ESD) and other voltage induced transient events. The UM5084 is
available in DFN2 1.0×0.6 (compatible with SOD923/SOD882/CSP 1.0×0.6) package with
working voltages of 12 volt. It gives designer the flexibility to protect bidirectional single line in
applications where arrays are not practical. Additionally, it may be “sprinkled” around the board
in applications where board space is at a premium. It may be used to meet the ESD immunity
requirements of IEC 61000-4-2, ±15kV air, ±8kV contact discharge.
Applications
Features
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Cell Phone Handsets and Accessories
Personal Digital Assistants (PDA’s)
Notebooks, Desktops and Servers
Portable Instrumentation
Cordless Phones
Smart Card
Digital Cameras
MP3 Players
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Pin Configurations
Transient Protection for Data Lines to IEC
61000-4-2 (ESD): ±15kV (Air), ±8kV (Contact)
Small Package for Use in Portable Electronics
Suitable Replacement for MLV’s in ESD
Protection Applications
Bidirectional TVS Protection
Stand-off Voltages: 12V
Low Leakage Current
Low Diode Capacitance
Small Body Outline Dimensions:
1.0mm×0.6mm
Top View
2
2
E5
1
1
UM5084
DFN2 1.0×0.6
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UM5084
Ordering Information
Part
Number
Working
Voltage
Packaging Type
Channel
Marking
Code
Shipping Qty
UM5084
12.0V
DFN2 1.0×0.6
1
E5
5000pcs/7 Inch
Tape & Reel
Absolute Maximum Ratings
Rating
Peak Pulse Power (tP=8/20μs)
Maximum Peak Pulse Current (tP=8/20μs)
Lead Soldering Temperature
Operating Temperature
Storage Temperature
Symbol
PPK
IPP
TL
TJ
TSTG
Value
140
5.9
260 (10 sec.)
-55 to +125
-55 to +150
Unit
Watts
Amps
°C
°C
°C
Symbol Definition
Parameter
Maximum Reverse Peak Pulse Current
Clamping Voltage @ Ipp
Working Peak Reverse Voltage
Maximum Reverse Leakage Current @ VRWM
Breakdown Voltage @ IT
Test Current
Peak Power Dissipation
Max. Capacitance @ VR=0V, f=1MHz
Symbol
IPP
VC
VRWM
IR
VBR
IT
PPK
CJ
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UM5084
Electrical Characteristics
(T=25°C, Device for 12.0V Reverse Stand-off Voltage)
Parameter
Reverse Stand-Off
Voltage
Reverse Breakdown
Voltage
Symbol
Conditions
Min
Typ
VRWM
16.7
Max
Unit
12
V
18.7
V
VBR
IT=1mA
Reverse Leakage Current
IR
VRWM=12V, T=25°C
0.5
μA
Clamping Voltage
VC
IPP=5.9A, tP=8/20μs
23.7
V
Junction Capacitance
CJ
VR=0V, f=1MHz
15
pF
10
Applications Information
Device Connection Options
UM5084 ESD protection diode is designed to protect one bidirectional data, I/O or power supply
line from the damage caused by ESD and surge pulses. The device is bidirectional and may be
used on lines where the signal polarity is above ground and below ground.
Circuit Board Layout Recommendations for Suppression of ESD
Good circuit board layout is critical for the suppression of ESD induced transients. The following
guidelines are recommended:
1. Place the TVS near the input terminals or connectors to restrict transient coupling.
2. Minimize the path length between the TVS and the protected line.
3. Minimize all conductive loops including power and ground loops.
4. The ESD transient return path to ground should be kept as short as possible.
5. Never run critical signals near board edges.
6. Use ground planes whenever possible. For multilayer printed-circuit boards, use ground
vias.
7. Keep parallel signal paths to a minimum.
8. Avoid running protection conductors in parallel with unprotected conductor.
9. Avoid using shared transient return paths to a common ground point.
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UM5084
Package Information
UM5084 DFN2 1.0×0.6
Outline Drawing
DIMENSIONS
D
e
Pin #1 ID
E
b(2×)
R
L(2×)
L1
Bottom View
Symbol
MILLIMETERS
A
Min
0.40
Typ
-
Max
0.53
Min
0.016
Typ
-
Max
0.021
A1
0.00
-
0.05
0.000
-
0.002
b
0.45
0.50
0.55
0.018
0.020
0.022
D
0.95
1.00
1.075
0.037
0.039
0.042
E
0.55
0.60
0.675
0.022
0.024
0.027
A1
A
e
Side View
INCHES
0.65TYP
0.026TYP
L
0.20
0.25
0.30
0.008
0.010
0.012
L1
0.00
0.05
0.10
0.000
0.002
0.004
R
0.05
0.10
0.15
0.002
0.004
0.006
Note: R is optional.
Land Pattern
0.65
0.35
NOTES:
1. Compound dimension: 1.00×0.60;
2. Unit: mm;
3. General tolerance ±0.05mm unless otherwise
specified;
4. The layout is just for reference.
0.65
Tape and Reel Orientation
E5
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UM5084
GREEN COMPLIANCE
Union Semiconductor is committed to environmental excellence in all aspects of its
operations including meeting or exceeding regulatory requirements with respect to the use
of hazardous substances. Numerous successful programs have been implemented to
reduce the use of hazardous substances and/or emissions.
All Union components are compliant with the RoHS directive, which helps to support
customers in their compliance with environmental directives. For more green compliance
information, please visit:
http://www.union-ic.com/index.aspx?cat_code=RoHSDeclaration
IMPORTANT NOTICE
The information in this document has been carefully reviewed and is believed to be
accurate. Nonetheless, this document is subject to change without notice. Union assumes
no responsibility for any inaccuracies that may be contained in this document, and makes
no commitment to update or to keep current the contained information, or to notify a
person or organization of any update. Union reserves the right to make changes, at any
time, in order to improve reliability, function or design and to attempt to supply the best
product possible.
Union Semiconductor, Inc
Add: Unit 606, No.570 Shengxia Road, Shanghai 201210
Tel: 021-51093966
Fax: 021-51026018
Website: www.union-ic.com
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