Datasheet SMDA05CN-5TB, SMDA05CN-5TE, SMDA15CN-5TB, SMDA15CN-5TE Datasheet (Semtech Corporation)
PROTECTION PRODUCTS
PROTECTION PRODUCTS
SMDA05CN-5 THRU SMDA15CN-5
Bidirectional TVS Array
for Protection of Five Lines
Description
The SMDAxxCN-5 series of transient voltage suppressors are designed to protect components which are
connected to data and transmission lines from voltage
surges caused by ESD (electrostatic discharge), EFT
(electrical fast transients), and lightning.
TVS diodes are characterized by their high surge
capability, low operating and clamping voltages, and
fast response time. This makes them ideal for use as
board level protection of sensitive semiconductor
components. The SMDAxxCN-5 is designed to provide
transient suppression on multiple data lines and I/O
ports. The low profile SO-8 design allows the user to
protect up to five data and I/O lines with one package.
The SMDAxxCN-5 TVS diode array will meet the surge
requirements of IEC 61000-4-2 (Formerly IEC 801-2),
Level 4, Human Body Model for air and contact
discharge.
Features
u 300 watts peak pulse power (tp = 8/20µs)
u Transient protection for data lines to
IEC 61000-4-2 (ESD) 15kV (air), 8kV (contact)
IEC 61000-4-4 (EFT) 40A (5/50ns)
IEC 61000-4-5 (Lightning) 12A (8/20µs)
u Protects up to 5 bidirectional lines
u Low operating voltage
u Low clamping voltage
u Solid-state silicon avalanche technology
Mechanical Characteristics
u JEDEC SO-8 package
u Molding compound flammability rating: UL 94V-0
u Marking : Part number, date code, logo
u Packaging : Tube or Tape and Reel per EIA 481
Applications
u RS-232 Data Lines
u RS-423 Data Lines
u LAN/WAN Equipment
u Servers
u Notebook & Desktop PC
u Set Top Box
u Peripherals
Circuit Diagram Schematic & PIN Configuration
SO-8 (Top View)
Revision 9/2000
1
www.semtech.com
PROTECTION PRODUCTS
PROTECTION PRODUCTS
Absolute Maximum Rating
SMDA05CN-5 THRU SMDA15CN-5
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Electrical Characteristics
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MWR
I
RB
R
C
C
PP
j
V
MWR
I
PP
I
PP
V
R
Am1=6 V
t
C°52=T,V5=01Aµ
sµ02/8=pt,A1=8.9V
sµ02/8=pt,A01=11V
sµ02/8=pt02A
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5-NC51ADMS
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MWR
I
PP
I
PP
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V
R
51V
Am1=7.61V
C°52=T,V51=1Aµ
sµ02/8=pt,A1=42V
sµ02/8=pt,A01=03V
sµ02/8=pt01A
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2ã 2000 Semtech Corp.
www.semtech.com
SMDA05CN-5 THRU SMDA15CN-5
PROTECTION PRODUCTS
PROTECTION PRODUCTS
Typical Characteristics
Non-Repetitive Peak Pulse Power vs. Pulse Time Power Derating Curve
10
(kW)
PP
1
0.1
Peak Pulse Power - P
0.01
0.1 1 10 100 1000
Pulse Duration - tp (µs)
Pulse Waveform Clamping Voltage vs. Peak Pulse Current
110
100
90
80
70
PP
60
50
40
Percent of I
30
20
10
0
0 5 10 15 20 25 30
-t
e
Time (µs)
td = IPP/2
Waveform
Parameters:
td = 20µs
tr = 8µs
110
100
90
PP
80
70
60
50
40
30
% of Rated Power or I
20
10
0
0 25 50 75 100 125 150 175
Ambient Temperature - T
35
30
(V)
C
25
20
15
10
Clamping Voltage - V
5
0
0 2 4 6 8 10 12 14 16 18 20 22 24
SMDA15CN-5
Peak Pulse Current - I
(oC)
A
SMDA05CN-5
(A)
PP
Waveform
Parameters:
tr = 8µs
td = 20µs
ã 2000 Semtech Corp.
3
www.semtech.com
PROTECTION PRODUCTS
PROTECTION PRODUCTS
Applications Information
SMDA05CN-5 THRU SMDA15CN-5
Device Connection Options for Protection of Four or
Five Data Lines
The SMDAxxCN-5 can be configured to protect either
four or five bidirectional data lines. The options for
connecting the devices are as follows:
1. Bidirectional protection of four I/O lines is achieved
by connecting pins 1, 2, 3, and 4 to the data lines.
Pins 5, 6, 7, and 8 are connected to ground. The
ground connection should be made directly to the
ground plane for best results. The path length is
kept as short as possible to reduce the effects of
parasitic inductance in the board traces. In this
configuration, the device can withstand the maximum specified transient impulse on four lines
simultaneously.
2. Bidirectional protection of five I/O lines is achieved
by connecting pins 1, 2, 3, 4, and 5 to the data
lines. Pins 6, 7, and 8 are connected to ground.
The ground connection should be made directly to
the circuit board ground plane for best results. In
this configuration, the device can withstand the
maximum rated transient impulse on any two lines
simultaneously.
Protection for Four Bidirectional Lines
From Connector
To Protected IC
Protection for Five Bidirectional Lines
From Connector
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:
l Place the TVS near the input terminals or connec-
tors to restrict transient coupling.
l Minimize the path length between the TVS and the
protected line.
l Minimize all conductive loops including power and
ground loops.
l The ESD transient return path to ground should be
kept as short as possible.
l Never run critical signals near board edges.
l Use ground planes whenever possible.
To Protected IC
4ã 2000 Semtech Corp.
www.semtech.com
PROTECTION PRODUCTS
PROTECTION PRODUCTS
Outline Drawing - SO-8
SMDA05CN-5 THRU SMDA15CN-5
Land Pattern - SO-8
ã 2000 Semtech Corp.
5
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PROTECTION PRODUCTS
PROTECTION PRODUCTS
Ordering Information
SMDA05CN-5 THRU SMDA15CN-5
rebmuNtraP
BT.5-NC50ADMSV5005hcnI7
ET.5-NC50ADMSV5005,2hcnI31
BT.5-NC51ADMSV51005hcnI7
ET.5-NC51ADMSV51005,2hcnI31
Note:
(1) No suffix indicates tube pack.
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Contact Information
Semtech Corporation
Protection Products Division
652 Mitchell Rd., Newbury Park, CA 91320
Phone: (805)498-2111 FAX (805)498-3804
6ã 2000 Semtech Corp.
www.semtech.com
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