SMDA03LC
thru
SMDA24LCC
LOW CAPACITANCE TVS ARRAY
105074.R8 3/08 www.protekdevices.com
APPLICATIONS
✔ SCSI & IDE Interfaces
✔ Parallel & Serial Port Protection (RS-232)
✔ Ethernet - 10/100 Base T
✔ Test & Measurement Equipment
✔ Industrial Control: Low Voltage Sensors
IEC COMPATIBILITY (EN61000-4)
✔ 61000-4-2 (ESD): Air - 15kV, Contact - 8kV
✔ 61000-4-4 (EFT): 40A - 5/50ns
✔ 61000-4-5 (Surge): 12A, 8/20µs - Level 1(Line-Gnd) & Level 2(Line-Line)
FEATURES
✔ 500 Watts Peak Pulse Power per Line (tp=8/20µs)
✔ Unidirectional & Bidirectional Configurations
✔ Available in Multiple Voltage Types Ranging From 3V to 24V
✔ Protects Up to Four (4) Lines
✔ ESD Protection > 40 kilovolts
✔ Low Capacitance: 15pF
✔ RoHS Compliant
MECHANICAL CHARACTERISTICS
✔ Molded JEDEC SO-8
✔ Weight 70 milligrams (Approximate)
✔ Available in Lead-Free Pure-Tin Plating(Annealed)
✔ Solder Reflow Temperature:
Pure-Tin - Sn, 100: 260-270°C
✔ Consult Factory for Leaded Device Availability
✔ Flammability Rating UL 94V-0
✔ 12mm Tape and Reel Per EIA Standard 481
✔ Marking: Marking Code, Logo, Date Code & Pin One Defined By Dot on Top of Package
05074
PIN CONFIGURATIONS
SO-8
124
8
3
5
6
7
124
8
3
5
6
7
UNIDIRECTIONAL BIDIRECTIONAL
SMDA03LC
thru
SMDA24LCC
205074.R8 3/08 www.protekdevices.com
DEVICE CHARACTERISTICS
Operating Temperature
SYMBOL VALUE
-55 to 150 °C
°C-55 to 150
UNITS
TL
TSTG
PARAMETER
Storage Temperature
Peak Pulse Power (tp = 8/20µs) - See Figure 1 PPP 500 Watts
MAXIMUM RATINGS @ 25°C Unless Otherwise Specified
Forward Voltage @ 50mA, 300µs - Square Wave (See Note 1) VF1.5 Volts
Note 1: Only applies to unidirectional devices.
Note 1: Part numbers with a “C” suffix are bidirectional devices, i.e., SMDA03LCC.
PART
NUMBER
(See Notes 1)
DEVICE
MARKING
MINIMUM
BREAKDOWN
VOLTAGE
@ 1mA
V(BR)
VOLTS
MAXIMUM
CLAMPING
VOLTAGE
(See Fig. 2)
@ IP = 1A
VC
VOLTS
MAXIMUM
CLAMPING
VOLTAGE
(See Fig. 2)
@8/20µs
VC @ IPP
MAXIMUM
CAPACITANCE
(See Note 2)
@0V, 1 MHz
C
pF
SMDA03LC
SMDA03LCC
SMDA05LC
SMDA05LCC
SMDA08LC
SMDA08LCC
SMDA12LC
SMDA12LCC
SMDA15LC
SMDA15LCC
SMDA24LC
SMDA24LCC
SLA
SLB
SLC
SLD
SLE
SLF
SLG
SLH
SLJ
SLK
SLL
SLM
4.5
4.5
6.0
6.0
8.5
8.5
13.3
13.3
16.7
16.7
26.7
26.7
7.0
7.0
9.8
9.8
13.4
13.4
19.0
19.0
24.0
24.0
43.0
43.0
10.9V @ 43.0A
10.9V @ 43.0A
13.5V @ 42.0A
13.5V @42.0A
16.9V @ 34.0A
16.9V @ 34.0A
25.9V @ 27.0A
25.9V @ 27.0A
30.0V @ 17.0A
30.0V @ 17.0A
49.0V @ 12.0A
49.0V @ 12.0A
15
15
15
15
15
15
15
15
15
15
15
15
MAXIMUM
LEAKAGE
CURRENT
@VWM
I
D
µA
125
125
20
20
10
10
1
1
1
1
1
1
RATED
STAND-OFF
VOLTAGE
VWM
VOLTS
3.3
3.3
5.0
5.0
8.0
8.0
12.0
12.0
15.0
15.0
24.0
24.0
ELECTRICAL CHARACTERISTICS PER LINE @ 25°C Unless Otherwise Specified
SMDA03LC
thru
SMDA24LCC
305074.R8 3/08 www.protekdevices.com
GRAPHS
0 25 50 75 100 125 150
TL - Lead Temperature - °C
20
40
60
80
100
% Of Rated Power
Peak Pulse Power
8/20µs
Average Power
FIGURE 3
POWER DERATING CURVE
0
0 5 10 15 20 25 30
t - Time - µs
0
20
40
60
80
100
120
IPP - Peak Pulse Current - % of IPP
TEST
WAVEFORM
PARAMETERS
tf = 8µs
td = 20µs
tfPeak Value IPP
e-t
td = t IPP/2
FIGURE 2
PULSE WAVE FORM
0.1 1 10 100 1,000 10,000
td - Pulse Duration - µs
500W 8/20µs Waveform
10
100
1,000
10,000
PPP - Peak Pulse Power - Watts
FIGURE 1
PEAK PULSE POWER VS PULSE TIME
FIGURE 4
OVERSHOOT & CLAMPING VOLTAGE FOR SMDA05LC
ESD Test Pulse: 5 kilovolt, 1/30ns (waveform)
5 Volts per Division
-20
-10
0
10
20
SMDA03LC
thru
SMDA24LCC
405074.R8 3/08 www.protekdevices.com
The SMDAxxLC & SMDAxxLCC Series are TVS arrays designed to protect I/O or data lines from the damaging effects of ESD, EFT and other types of
surges. This product series provides both unidirectional and bidirectional protection, with a surge capability of 500 Watts PPP per line for an 8/20µs
waveform and ESD protection > 40kV.
UNIDIRECTIONAL COMMON-MODE CONFIGURATION(Figure 1)
The SMDAxxLC Series provides up to four (4) lines of protection in a common-mode
configuration as depicted in Figure 1.
Circuit connectivity is as follows:
✔Line 1 is connected to Pin 5.
✔Line 2 is connected to Pin 6.
✔Line 3 is connected to Pin 7.
✔Line 4 is connected to Pin 8.
✔Pins 1-4 are connected to ground.
BIDIRECTIONAL COMMON-MODE CONFIGURATION (Figure 2)
Ideal for Ethernet applications, SMDAxxLCC Series provides up to four (4) lines of
protection in a common-mode configuration as depicted in Figure 2.
Circuit connectivity is as follows:
✔TPIN is connected to Pin 5.
✔TPIP is connected to Pin 6.
✔TPON is connected to Pin 1.
✔TPOP is connected to Pin 2.
✔Pins 3, 4, 7 & 8 are connected to ground.
CIRCUIT BOARD LAYOUT RECOMMENDATIONS
Circuit board layout is critical for Electromagnetic
Compatibility (EMC) protection. The following
guidelines are recommended:
✔The protection device should be placed near the
input terminals or connectors, the device will
divert the transient current immediately before it
can be coupled into the nearby traces.
✔The path length between the TVS device and
the protected line should be minimized.
✔All conductive loops including power and ground
loops should be minimized.
✔The transient current return path to ground
should be kept as short as possible to reduce
parasitic inductance.
✔Ground planes should be used whenever
possible. For multilayer PCBs, use ground vias.
Figure 1. Unidirectional Common-Mode Protection
5
6
7
8
1234
LINE 4
LINE 3
LINE 2
LINE 1
GND PLANE
Figure 2. Bidirectional Common-Mode Protection
5
6
7
8
1234
TPIN
TPIP
TPOP
TPON
ETHERNET REPEATER
APPLICATION NOTE
SMDA03LC
thru
SMDA24LCC
505074.R8 3/08 www.protekdevices.com
SO-8 PACKAGE OUTLINE & DIMENSIONS
COPYRIGHT © ProTek Devices 2007
SPECIFICATIONS: ProTek reserves the right to change the electrical and or mechanical characteristics described herein without notice (except JEDEC).
DESIGN CHANGES: ProTek reserves the right to discontinue product lines without notice, and that the final judgement concerning selection and specifications is
the buyer’s and that in furnishing engineering and technical assistance, ProTek assumes no responsibility with respect to the selection or specifications of such
products.
ProTek Devices
2929 South Fair Lane, Tempe, AZ 85282
Tel: 602-431-8101 Fax: 602-431-2288
E-Mail: sales@protekdevices.com
Web Site: www.protekdevices.com
TAPE & REEL/BULK ORDERING NOMENCLATURE
1. Surface mount product is taped and reeled in accordance with EIA-481.
2. Suffix-T7 = 7 Inch Reel - 1,000 pieces per 12mm tape, i.e. SMDA05LC-T7.
3. Suffix-T13 = 13 Inch Reel - 2,500 pieces per 12mm tape,
i.e., SMDA05LC-T13.
4. Suffix - LF = Lead-Free, Pure-Tin Plating, i.e., SMDA05LC-LF-T7.
5. No Suffix = Product Shipped in Tubes of 98 pcs per Tube.
A
B
C
D
F
G
J
K
P
R
4.80
3.80
1.35
0.35
0.40
1.27 BSC
0.18
0.10
5.80
0.25
5.00
4.00
1.75
0.49
1.250
1.27 BSC
0.25
0.25
6.20
0.50
0.189
0.150
0.054
0.014
0.016
0.05 BSC
0.007
0.004
0.229
0.010
0.196
0.157
0.068
0.019
0.049
0.05 BSC
0.009
0.008
0.244
0.019
DIM MIN MAX MIN MAX
MILLIMETERS INCHES
PACKAGE DIMENSIONS
NOTES
1. - T - = Seating Plane and Datum Surface.
2. Dimensions “A” and “B” are Datum.
3. Dimensions “A” and “B” do not include mold protrusion.
4. Maximum mold protrusion is 0.015” (0.380 mm) per side.
5. Dimensioning and tolerances per ANSI Y14.5M, 1982.
6. Dimensions are exclusive of mold flash and metal burrs.
-A-
85
14
-B - P
G
D
-T-
C
KJ
R x 45°
0° - 10°
F
4 PL
0.010 (0.25 MM) MM
B
+
8 PL
0.010 (0.25 MM) MS
B
+S
AT
PACKAGE OUTLINE SO-8
0.050 ± 0.005
0.030 ± 0.005
0.245 MIN
0.160 ± 0.005
0.045 ± 0.005
MOUNTING PAD
