SMDA05-6 [SEMTECH]
Unidirectional TVS Array for Protection of Six Lines; 为保护六行单向TVS阵列
| 型号： | SMDA05-6 |
| 厂家： | 
SEMTECH CORPORATION |
| 描述： | Unidirectional TVS Array for Protection of Six Lines |
| 文件： | 总6页 (文件大小：160K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
SMDA05-6
Unidirectional TVS Array
for Protection of Six Lines
PROTECTION PRODUCTS
Features
Description
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 6 unidirectional lines
u Low operating voltage
The SMDA 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 SMDA05-6 is designed to provide
transient suppression on multiple data lines and I/O
ports. It is designed to operate on 5V digital lines. The
low profile SO-8 design allows the user to protect up to
six data and I/O lines with one package.
u Low clamping voltage
u Solid-state silicon avalanche technology
Mechanical Characteristics
u JEDEC SO-8 package
u UL 497B listed
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
The SMDA05-6 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.
Applications
u 5V data & I/O lines
u Communication lines
u Microprocessor based equipment
u LAN/WAN equipment
u Servers
u Notebook & Desktop PC
u Instrumentation
u Peripherals
Circuit Diagram
Schematic & PIN Configuration
SO-8 (Top View)
www.semtech.com
Revision 9/2000
1
SMDA05-6
PROTECTION PRODUCTS
Absolute Maximum Rating
Rating
Peak Pulse Power (tp = 8/20µs)
Peak Pulse Current (tp = 8/20µs)
Lead Soldering Temperature
Operating Temperature
Symbol
Ppk
Value
300
Units
Watts
A
IPP
17
TL
260 (10 sec.)
-55 to +125
-55 to +150
°C
TJ
°C
Storage Temperature
TSTG
°C
Electrical Characteristics
SMDA05-6
Parameter
Symbol
VRWM
VBR
IR
Conditions
Minimum
Typical
Maximum
Units
Reverse Stand-Off Voltage
Reverse Breakdown Voltage
Reverse Leakage Current
Clamping Voltage
5
V
V
It = 1mA
6
VRWM = 5V, T=25°C
IPP = 1A, tp = 8/20µs
IPP = 5A, tp = 8/20µs
tp = 8/20µs
20
9.8
11
µA
V
VC
Clamping Voltage
VC
V
Maximum Peak Pulse Current
Junction Capacitance
IPP
17
A
Cj
Between I/O pins and
Gnd
400
pF
VR = 0V, f = 1MHz
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ã 2000 Semtech Corp.
2
SMDA05-6
PROTECTION PRODUCTS
Typical Characteristics
Non-Repetitive Peak Pulse Power vs. Pulse Time
Power Derating Curve
10
110
100
90
80
70
60
50
40
30
20
10
0
1
0.1
0.01
0
25
50
75
100
125
150
0.1
1
10
100
1000
Ambient Temperature - TA (oC)
Pulse Duration - tp (µs)
Pulse Waveform
Clamping Voltage vs. Peak Pulse Current
11
10
9
110
100
90
80
70
60
50
40
30
20
10
0
Waveform
Parameters:
tr = 8µs
td = 20µs
8
7
e-t
6
5
4
td = IPP/2
Waveform
Parameters:
tr = 8µs
3
2
td = 20µs
1
0
0
2
4
6
8
10
12
14
16
18
0
5
10
15
20
25
30
Peak Pulse Current - IPP (A)
Time (µs)
ESD Pulse Waveform (IEC 61000-4-2)
IEC 61000-4-2 Discharge Parameters
Level
First
Peak
Peak
Test
Test
Peak
Current
Current
Voltage
(Contact
Voltage
(Air
Current at 30 ns at 60 ns
Discharge) Discharge)
(A)
7.5
(A)
4
(A)
8
(kV)
(kV)
1
2
3
4
2
2
15
22.5
30
8
4
6
8
4
6
8
4
8
12
16
15
www.semtech.com
ã 2000 Semtech Corp.
3
SMDA05-6
PROTECTION PRODUCTS
Applications Information
Device Connection for Protection of Six Data Lines
Circuit Diagram
The SMDA05-6 is designed to protect up to 6 data or
I/O lines operating at 5 volts. They are unidirectional
devices and may be used on lines where the signal
polarities are above ground (i.e. 0 to 5V).
The device is connected as follows:
l
Pins 1, 2, 3, 4, 5 and 8 are connected to the lines
that are to be protected. Pins 6 and 7 are con-
nected to ground. The ground connections should
be made directly to the ground plane for best
results. The path length is kept as short as pos-
sible to reduce the effects of parasitic inductance
in the board traces.
Connection Diagram
Circuit Board Layout Recommendations for Suppres-
sion of ESD.
DATA IN
DATA OUT
Good circuit board layout is critical for the suppression
of ESD induced transients. The following guidelines are
recommended:
l
l
l
l
Place the TVS near the input terminals or connec-
tors to restrict transient coupling.
Minimize the path length between the TVS and the
protected line.
Minimize all conductive loops including power and
ground loops.
The ESD transient return path to ground should be
kept as short as possible.
8
7
6
5
4
1
2
3
l
l
Never run critical signals near board edges.
Use ground planes whenever possible.
DATA IN
DATA OUT
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ã 2000 Semtech Corp.
4
SMDA05-6
PROTECTION PRODUCTS
Outline Drawing - SO-8
Land Pattern - SO-8
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ã 2000 Semtech Corp.
5
SMDA05-6
PROTECTION PRODUCTS
Ordering Information
Working
Voltage
Qty per
Reel
Part Number
Reel Size
SMDA05-6.TB
SMDA05-6.TE
5V
5V
500
7 Inch
2,500
13 Inch
Note:
(1) No suffix indicates tube pack.
Contact Information
Semtech Corporation
Protection Products Division
652 Mitchell Rd., Newbury Park, CA 91320
Phone: (805)498-2111 FAX (805)498-3804
www.semtech.com
ã 2000 Semtech Corp.
6
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