SMDA05C-5 Datasheet

SMDA05C-5 THRU SMDA24C-5
Bidirectional TVS Array
for Protection of Five Lines
PROTECTION PRODUCTS
Description
Features
‹ Transient protection for data lines to
The SMDAxxC-5 series of transient voltage suppressors are designed to protect components which are
connected to data and transmission lines from voltage
surges caused by electrostatic discharge (ESD), electrical fast transients (EFT), and lightning.
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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 SMDAxxC-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.
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)
Small SO-8 surface mount package
Protects five I/O lines
Working voltages: 5V, 12V, 15V and 24V
Low leakage current
Low operating and clamping voltages
Solid-state silicon avalanche technology
Mechanical Characteristics
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The SMDAxxC-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.
JEDEC SO-8 package
Molding compound flammability rating: UL 94V-0
Marking : Part number, date code, logo
Packaging : Tube or Tape and Reel per EIA 481
Applications
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RS-232 and RS-422 Data Lines
Microprocessor Based Equipment
LAN/WAN Equipment
Notebooks, Desktops, and Servers
Instrumentation
Peripherals
Set Top Box
Serial and Parallel Ports
Schematic and PIN Configuration
SO-8 (Top View)
Revision 08/15/06
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SMDA05C-5 THRU SMDA24C-5
PROTECTION PRODUCTS
Absolute Maximum Rating
R ating
Symbol
Value
Units
Peak Pulse Power (tp = 8/20µs)
Pp k
300
Watts
Lead Soldering Temperature
TL
260 (10 sec.)
°C
Operating Temperature
TJ
-55 to +125
°C
TSTG
-55 to +150
°C
Storage Temperature
Electrical Characteristics
SMDA05C-5
Parameter
Symbol
Conditions
Minimum
Typical
Maximum
Units
5
V
Reverse Stand-Off Voltage
VRWM
Reverse Breakdown Voltage
V BR
It = 1mA
Reverse Leakage Current
IR
VRWM = 5V, T=25°C
20
µA
Clamping Voltage
VC
IPP = 1A, tp = 8/20µs
9.8
V
Maximum Peak Pulse Current
IP P
tp = 8/20µs
17
A
Junction Capacitance
Cj
Between I/O Pins and
Ground
VR = 0V, f = 1MHz
350
pF
Symbol
Conditions
Maximum
Units
12
V
6
V
SMDA12C-5
Parameter
Minimum
Typical
Reverse Stand-Off Voltage
VRWM
Reverse Breakdown Voltage
V BR
It = 1mA
Reverse Leakage Current
IR
VRWM = 12V, T=25°C
1
µA
Clamping Voltage
VC
IPP = 1A, tp = 8/20µs
19
V
Maximum Peak Pulse Current
IP P
tp = 8/20µs
12
A
Junction Capacitance
Cj
Between I/O Pins and
Ground
VR = 0V, f = 1MHz
120
pF
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SMDA05C-5 THRU SMDA24C-5
PROTECTION PRODUCTS
Electrical Characteristics
SMDA15C-5
Parameter
Symbol
Conditions
Minimum
Typical
Maximum
Units
15
V
Reverse Stand-Off Voltage
VRWM
Reverse Breakdown Voltage
V BR
It = 1mA
Reverse Leakage Current
IR
VRWM = 15V, T=25°C
1
µA
Clamping Voltage
VC
IPP = 1A, tp = 8/20µs
24
V
Maximum Peak Pulse Current
IP P
tp = 8/20µs
10
A
Junction Capacitance
Cj
Between I/O Pins and
Ground
VR = 0V, f = 1MHz
75
pF
Symbol
Conditions
Maximum
Units
24
V
16.7
V
SMDA24C-5
Parameter
Minimum
Typical
Reverse Stand-Off Voltage
VRWM
Reverse Breakdown Voltage
V BR
It = 1mA
Reverse Leakage Current
IR
VRWM = 24V, T=25°C
1
µA
Clamp ing Voltage
VC
IPP = 1A, tp = 8/20µs
43
V
Maximum Peak Pulse Current
IP P
tp = 8/20µs
5
A
Junction Cap acitance
Cj
Between I/O Pins and
Ground
VR = 0V, f = 1MHz
50
pF
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SMDA05C-5 THRU SMDA24C-5
PROTECTION PRODUCTS
Typical Characteristics
Non-Repetitive Peak Pulse Power vs. Pulse Time
Power Derating Curve
10
110
% of Rated Power or PI P
Peak Pulse Power - PPk (kW)
100
1
0.1
90
80
70
60
50
40
30
20
10
0
0.01
0.1
1
10
100
0
1000
25
50
75
100
125
150
Ambient Temperature - TA (oC)
Pulse Duration - tp (µs)
Pulse Waveform
110
Waveform
Parameters:
tr = 8µs
td = 20µs
100
90
Percent of I
PP
80
70
e-t
60
50
40
td = IPP/2
30
20
10
0
0
5
10
15
20
25
30
Time (µs)
ESD Pulse Waveform (Per IEC 61000-4-2)
IEC 61000-4-2 Discharge Parameters
Level
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First
Peak
Current
Peak
Current
at 30 ns
Peak
Current
at 60 ns
Test
Test
Voltage
Voltage
(Contact
(A ir
Discharge) Discharge)
( kV )
(kV)
(A )
(A )
(A )
1
7.5
4
8
2
2
2
15
8
4
4
4
3
22.5
12
6
6
8
4
30
16
8
8
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SMDA05C-5 THRU SMDA24C-5
PROTECTION PRODUCTS
Applications Information
Circuit Diagram
Device Connection for Protection of Five Data Lines
The SMDAxxC-5 is designed to protect up to 5 data or
I/O lines. They are bidirectional devices and may be
used on lines where the signal polarities are above and
below ground.
The SMDAxxC-5 TVS arrays employ a monolithic structure. Therefore, the working voltage (VRWM) and breakdown voltage (VBR) specifications apply to the differential voltage between any two data line pins. For example, the SMDA24C-5 is designed for a maximum
voltage excursion of ±12V between any two data lines.
The device is connected as follows:
z
Connection Diagram
Pins 1, 2, 3, 4, and 5 are connected to the lines
that are to be protected. Pin 8 is connected to
ground. The ground connections 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. Pins 6 and 7 are not connected.
DATA IN
DATA OUT
8
7
6
5
1
2
3
4
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:
z Place the TVS near the input terminals or connectors to restrict transient coupling.
z Minimize the path length between the TVS and the
protected line.
z Minimize all conductive loops including power and
ground loops.
z The ESD transient return path to ground should be
kept as short as possible.
z Never run critical signals near board edges.
z Use ground planes whenever possible.
DATA IN
DATA OUT
Matte Tin Lead Finish
Matte tin has become the industry standard lead-free
replacement for SnPb lead finishes. A matte tin finish
is composed of 100% tin solder with large grains.
Since the solder volume on the leads is small compared to the solder paste volume that is placed on the
land pattern of the PCB, the reflow profile will be
determined by the requirements of the solder paste.
Therefore, these devices are compatible with both
 2004 Semtech Corp.
lead-free and SnPb assembly techniques. In addition,
unlike other lead-free compositions, matte tin does not
have any added alloys that can cause degradation of
the solder joint.
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SMDA05C-5 THRU SMDA24C-5
PROTECTION PRODUCTS
Outline Drawing - SO-8
A
e
N
h
D
h
H
2X E/2
E1 E
1
c
GAGE
PLANE
2
0.25
ccc C
2X N/2 TIPS
DIM
L
(L1)
e/2
DETAIL
B
01
A
D
aaa C
SEATING
PLANE
A2 A
C
.053
.069
.010
.004
.065
.049
.012
.020
.010
.007
.189 .193 .197
.150 .154 .157
.236 BSC
.050 BSC
.010
.020
.016 .028 .041
(.041)
8
8°
0°
.004
.010
.008
1.35
1.75
0.10
0.25
1.25
1.65
0.31
0.51
0.17
0.25
4.80 4.90 5.00
3.80 3.90 4.00
6.00 BSC
1.27 BSC
0.25
0.50
0.40 0.72 1.04
(1.04)
8
0°
8°
0.10
0.25
0.20
SIDE VIEW
A1
bxN
bbb
A
SEE DETAIL
A
A1
A2
b
c
D
E1
E
e
h
L
L1
N
01
aaa
bbb
ccc
DIMENSIONS
INCHES
MILLIMETERS
MIN NOM MAX MIN NOM MAX
C A-B D
NOTES:
1.
CONTROLLING DIMENSIONS ARE IN MILLIMETERS (ANGLES IN DEGREES).
2. DATUMS -A- AND -B- TO BE DETERMINED AT DATUM PLANE -H3. DIMENSIONS "E1" AND "D" DO NOT INCLUDE MOLD FLASH, PROTRUSIONS
OR GATE BURRS.
4. REFERENCE JEDEC STD MS-012, VARIATION AA.
Land Pattern - SO-8
X
DIM
(C)
G
Z
Y
C
G
P
X
Y
Z
DIMENSIONS
INCHES
MILLIMETERS
(.205)
.118
.050
.024
.087
.291
(5.20)
3.00
1.27
0.60
2.20
7.40
P
NOTES:
1.
THIS LAND PATTERN IS FOR REFERENCE PURPOSES ONLY.
CONSULT YOUR MANUFACTURING GROUP TO ENSURE YOUR
COMPANY'S MANUFACTURING GUIDELINES ARE MET.
2. REFERENCE IPC-SM-782A, RLP NO. 300A.
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SMDA05C-5 THRU SMDA24C-5
PROTECTION PRODUCTS
Ordering Information
Part Number
Lead
Finish
Qty per Reel
Reel Size
SMDA05C-5.TB
SnPb
500
7 Inch
SMDA12C-5.TB
SnPb
500
7 Inch
SMDA15C-5.TB
SnPb
500
7 Inch
SMDA24C-5.TB
SnPb
500
7 Inch
SMDA05C-5.TBT
Pb Free
500
7 Inch
SMDA12C-5.TBT
Pb Free
500
7 Inch
SMDA15C-5.TBT
Pb Free
500
7 Inch
SMDA24C-5.TBT
Pb Free
500
7 Inch
SMDA05C-5
SnPb
95/Tube
N/A
SMDA12C-5
SnPb
95/Tube
N/A
SMDA15C-5
SnPb
95/Tube
N/A
SMDA24C-5
SnPb
95/Tube
N/A
SMDA05C-5.T
Pb Free
95/Tube
N/A
SMDA12C-5.T
Pb Free
95/Tube
N/A
SMDA15C-5.T
Pb Free
95/Tube
N/A
SMDA24C-5.T
Pb Free
95/Tube
N/A
Note: Lead-free devices are RoHS/WEEE Compliant
Contact Information
Semtech Corporation
Protection Products Division
200 Flynn Rd., Camarillo, CA 93012
Phone: (805)498-2111 FAX (805)498-3804
 2004 Semtech Corp.
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