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05181
Only One Name Means ProTek’Tion™
APPLICATIONS
✔ Ethernet - 10/100/1000 Base T
✔ Cellular Phones
✔ Audio/Video Inputs
✔ Handheld Electronics
✔ Personal Digital Assistant (PDA)
IEC COMPATIBILITY (EN61000-4)
SLVU2.8-8
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 Line Pairs
✔ ESD Protection > 40 kilovolts
✔ ✔
✔
LOW LEAKAGE CURRENT < 1.0µA
✔ ✔
✔ ✔
✔
ULTRA LOW CAPACITANCE: 6pF Typical
✔ ✔
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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DEVICE CHARACTERISTICS
MAXIMUM RATINGS @ 25°C Unless Otherwise Specified
SLVU2.8-8
PARAMETER
Peak Pulse Power (tp = 8/20µs) - See Figure 1
Peak Pulse Current (tp = 8/20µs)
Lead Soldering Temperature
Operating Temperature
Storage Temperature
SYMBOL VALUE
P
I
T
PP
I
PP
FRM
T
STG
J
600
30
260°C (10s)
-55°C to 150°C
ELECTRICAL CHARACTERISTICS PER LINE @ 25°C Unless Otherwise Specified
PART NUMBER DEVICE
MARKING
RATED
STAND-OFF
VOLTAGE
(See Note 1)
V
WM
VOLTS
MINIMUM
BREAKDOWN
VOLTAGE
(See Note 1)
@ 1mA
V
(BR)
VOLTS
MINIMUM
SNAPBACK
VOLTAGE
(See Note 1)
@I
= 50mA
SB
V
SB
VOLTS
2.83.02.8SL8SLVU2.8-8
@IPP = 2A
V
C
VOLTS
@I
VOLTS
PP
V
8.55.5
MAXIMUM
CLAMPING
VOLTAGE
(See Note 1)
(See Fig. 2)
= 5A
@IPP = 24A
C
VOLTS
@IPP = 30A
V
C
15
V
C
VOLTS
17
MAXIMUM
LEAKAGE
CURRENT
(See Note 1)
UNITS
Watts
Amps
°C
°C-55°C to 150°C
°C
TYPICAL
CAPACITANCE
(See Note 1)
@V
WM
I
D
µA
1.0 6
@0V, 1MHz
C
pF
Note 1: Device measured between pin 1 to 2, pin 3 to 4, pin 5 to 6 and pin 7 to 8.
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GRAPHS
SLVU2.8-8
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
PULSE WAVE FORM
t
f
Peak Value I
-t
e
PP
TEST
WAVEFORM
PARAMETERS
tf = 8µs
td = 20µs
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
40
td = t
- Peak Pulse Current - % of I
20
PP
I
0
0 5 10 15 20 25 30
t - Time - µs
IPP/2
TYPICAL CLAMPING VOLTAGE VS PEAK PULSE CURRENT
20
16
12
- Clamping Voltage - V
C
V
FIGURE 4
8
4
0
0 5 10 15 20 25 30
IPP - Peak Pulse Current A
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SLVU2.8-8
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 SLVU2.8-8 was designed to provide the level of protection required to safe guard sensitive
equipment. This product can be used in different configurations to provide a level of protection to meet bidirectional requirements either in a commonmode or differential-mode configuration.
BIDIRECTIONAL COMMON-MODE CONFIGURATION (Figure 1)
The SLVU2.8-8 provides up to four lines of protection in a common-mode configuration as
depicted in figure 1.
Circuit connectivity is as follows:
✔ Line 1 is connected to Pin 1
✔ Line 2 is connected to Pin 8
✔ Line 3 is connected to Pin 5
✔ Line 4 is connected to Pin 4
✔ Pins 2, 3, 6 and 7 are connected to ground
BIDIRECTIONAL DIFFERENTIAL-MODE CONFIGURATION (Figure 2)
The SLVU2.8-8 provides up to four line paris of protection in a differential-mode configuration as depicted in figure 2.
Figure 1. Bidirectional Common-Mode Protection
Circuit connectivity is as follows:
✔ Line Pair 1 is connected to Pins 1 & 2
✔ Line Pair 2 is connected to Pins 3 & 4
✔ Line Pair 3 is connected to Pins 7 & 8
✔ Line Pair 4 is connected to Pins 5 & 6
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 2. Bidirectional Differential-Mode Protection
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PACKAGE OUTLINE & DIMENSIONS
SLVU2.8-8
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”
J
R X 45º
0.030” ± 0.005”
A
B
C
D
0º - 10º
F
G
F
J
K
P
R
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.
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.,
SLVU2.8-8-T7.
3. Suffix-T13 = 13 Inch Reel - 2,500 pieces per 12mm tape,
i.e.,
SLVU2.8-8-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: [email protected]
Web Site: www.protekdevices.com
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