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05143
Only One Name Means ProTek’Tion™
APPLICATIONS
✔ Ethernet - 10/100/1000 Base T
✔ Cellular Phone Base Stations
✔ Switching Stations
✔ Audio/Video Inputs
✔ Handheld Devices
IEC COMPATIBILITY (EN61000-4)
SLVDA2.8LC
ULTRA LOW CAPACITANCE TVS ARRAY
✔ 61000-4-2 (ESD): Air - 15kV, Contact - 8kV
✔ 61000-4-4 (EFT): 40A - 5/50ns
✔ 61000-4-5 (Surge): 24A, 8/20µs - Level 2(Line-Ground) & Level 3(Line-Line)
FEATURES
✔ 600 Watts Peak Pulse Power per Line (tp = 8/20µs)
✔ Provides Protection for Four (4) Line Pairs
✔ ✔
✔
LOW LEAKAGE CURRENT < 1.0µA
✔ ✔
✔ ✔
✔
ULTRA LOW CAPACITANCE: 1.25pF
✔ ✔
MECHANICAL CHARACTERISTICS
✔ Molded JEDEC SO-8
✔ Weight 0.6 grams (Approximate)
✔ Flammability rating UL 94V-0
✔ 12mm Tape and Reel Per EIA Standard 481
✔ Device Marking: Marking Code, Logo, Date Code & Pin One Defined By DOT on Package
PIN CONFIGURATION
SO-8
8
1
7
2
6
3
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4
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DEVICE CHARACTERISTICS
MAXIMUM RATINGS @ 25°C Unless Otherwise Specified
SLVDA2.8LC
PARAMETER
Peak Pulse Power (tp = 8/20µs) - See Figure 1
Peak Pulse Current (tp = 8/20µs)
Lead Soldering Temperature
Operating Temperature
Storage Temperature
SYMBOL
P
PP
I
PP
T
II
T
J
T
STG
VALUE
600
30
260°C (10 Sec)
-55°C to 150°C
-55°C to 150°C
ELECTRICAL CHARACTERISTICS PER LINE @ 25°C Unless Otherwise Specified
PA RT
NUMBER
SLVDA2.8LC LV2.8 2.8 3.0 2.8 4.6
DEVICE
MARKING
CODE
RATED
STAND-OFF
VOLTAGE
V
WM
VOLTS
MINIMUM
BREAKDOWN
VOLTAGE
@ 1mA
V
(BR)
VOLTS
MINIMUM
SNAP BACK
VOLTAGE
@ I
= 50mA
SB
V
SB
VOLTS
MAXIMUM
CLAMPING
VOLTAGE
(See Fig. 2)
@IP = 1A
V
C
VOLTS
MAXIMUM
CLAMPING
VOLTAGE
(See Fig. 2)
@IP = 5A
V
C
VOLTS
6.2 5
MAXIMUM
CLAMPING
VOLTAGE
(See Fig. 42)
@8/20µs
VC @ I
21.0V@30.0A 1.0
MAXIMUM
LEAKAGE
CURRENT
PP
@V
µA
UNITS
Watts
A
°C
°C
°C
TYPICAL
CAPACITANCE
WM
I
D
@0V, 1MHz
C
pF
PEAK PULSE POWER VS PULSE TIME
FIGURE 1
10,000
1,000
100
- Peak Pulse Current - Watts
PP
P
10
0.01 1 10 100 1,000 10,000
td - Pulse Duration - µs
600W, 8/20µs Waveform
FIGURE 2
120
PP
100
80
60
40
- Peak Pulse Current - % of I
20
PP
I
0
0 5 10 15 20 25 30
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PULSE WAVE FORM
t
f
Peak Value I
-t
e
td = t
t - Time - µs
PP
IPP/2
TEST
WAVEFORM
PARAMETERS
tf = 8µs
td = 20µs
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GRAPHS
SLVDA2.8LC
POWER DERATING CURVE
FIGURE 3
100
80
60
40
% Of Rated Power
20
0
0 25 50 75 100 125 150
TL - Lead Temperature - °C
Peak Pulse Power
8/20µs
Average Power
TYPICAL CLAMPING VOLTAGE VS PEAK PULSE CURRENT
FIGURE 4
20
16
12
8
- Clamping Voltage - V
C
4
V
0
0 5 10 15 20 25 30
IPP - Peak Pulse Current A
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Page 4
SLVDA2.8LC
APPLICATION NOTE
Electronic equipment is susceptible to damage caused by Electrostatic Discharge (ESD), Electrical Fast Transients (EFT), and tertiary lightning
effects. Knowing that equipment can be damaged, the SLVDA2.8LC was designed to provide the level of protection required to safe guard sensitive
high speed data circuits. This product can be used to provide a level of protection to meet bidirectional requirements either in a common-mode or
differential-mode configuration.
BIDIRECTIONAL COMMON-MODE CONFIGURATION (Figure 1)
The SLVDA2.8LC can provide 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 8
✔ Line 2 is connected to pin 7
✔ Line 3 is connected to pin 6
✔ Line 4 is connected to pin 5
✔ Pins 1, 2, 3, and 4 are connected to ground
BIDIRECTIONAL DIFFERENTIAL-MODE CONFIGURATION (Figure 2)
The SLVDA2.8LC can provide up to four line pairs (4) of protection in a differential-mode configuration as depicted in Figure 2.
Circuit connectivity is as follows:
✔ Line Pair # 1 is connected to pin 8 and 1
✔ Line Pair # 2 is connected to pin 7 and 2
✔ Line Pair # 3 is connected to pin 5 and 4
✔ Line Pair # 4 is connected to pin 6 and 3
CIRCUIT BOARD LAYOUT RECOMMENDATIONS
Circuit board layout is critical for Electromagnetic
Compatibility (EMC) protection. The following guidelines
are recommended:
Figure 1: Bidirectional Common-Mode Protection
Figure 2: Bidirectional Differential-Mode Protection
✔ 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.
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Page 5
PACKAGE OUTLINE & DIMENSIONS
SLVDA2.8LC
G
-T-
0.010” (0.25 MM)
8 PL
PACKAGE OUTLINE
-A-
8
1
5
M
P
0.010” (0.25 MM)
4 PL
-B-
4
M
B
PACKAGE DIMENSIONS
MILLIMETERS
SO-8
INCHES
DIM MIN MAX MIN MAX
D
C
K
S
S
M
T
B
A
MOUNTING PAD
0.050” ± 0.005”
A
B
R X 45º
C
D
0º - 10º
F
G
J
F
J
K
P
R
NOTES
1. - T - = Seating Plane and Datum Surface.
0.030” ± 0.005”
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.
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
0.160” ± 0.005”
0.045” ± 0.005”
COPYRIGHT © ProTek Devices 2003
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.
0.245” MIN
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.,
SLVDA2.8LC-T7.
3. Suffix-T13 = 13 Inch Reel - 2,500 pieces per 12mm tape,
i.e.,
SLVDA2.8LC-T13.
4. No Suffix = Product Shipped in Tubes of 98 pcs per Tube.
Outline & Dimensions: Rev 1 - 11/01, 06009
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
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