Page 1
PSOT03LC
05066
Only One Name Means ProTek’Tion™
ULTRA LOW CAPACITANCE TVS ARRAY
APPLICATIONS
✔ Ethernet - 10/100 Base T
✔ Cellular Phones
✔ FireWire
✔ Audio/Video Inputs
✔ Portable Electronics
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-Ground) & Level 2(Line-Line)
FEATURES
✔ ESD Protection > 40 kilovolts
✔ 500 Watts Peak Pulse Power per Line (tp = 8/20µs)
✔ Low Clamping Voltage
✔ Available in Multiple Voltage Types Ranging from 3V to 36V
✔ ✔
✔
ULTRA LOW CAPACITANCE: 5pF
✔ ✔
thru
PSOT36LC
SOT-23
MECHANICAL CHARACTERISTICS
✔ Molded JEDEC SOT-23
✔ Weight 14 milligrams (Approximate)
✔ Flammability rating UL 94V-0
✔ 8mm Tape and Reel Per EIA Standard 481
✔ Device Marking: Marking Code
PIN CONFIGURATION
1
2
3
105066.R4 8/03 www.protekdevices.com
Page 2
DEVICE CHARACTERISTICS
MAXIMUM RATINGS @ 25°C Unless Otherwise Specified
PSOT03LC
thru
PSOT36LC
PARAMETER
Peak Pulse Power - tp= 8/20µs (See Figure 1)
Operating Temperature
Storage Temperature
SYMBOL VALUE UNITS
P
PP
J
T
STG
500 W
-55°C to 150°CT
-55°C to 150°C°C
ELECTRICAL CHARACTERISTICS PER LINE @ 25°C Unless Otherwise Specified
PA RT
NUMBER
(Note 1)
PSOT03LC
PSOT05LC
PSOT08LC
PSOT12LC
PSOT15LC
PSOT24LC
PSOT36LC
DEVICE
MARKING
03L
05L
08L
12L
15L
24L
36L
RATED
STAND-OFF
VOLTAGE
V
WM
VOLTS
3.3
5.0
8.0
12.0
15.0
24.0
36.0
MINIMUM
BREAKDOWN
VOLTAGE
(See Note 2)
@ 1mA
V
(BR)
VOLTS
4.0
6.0
8.5
13.3
16.7
26.7
40.0
MAXIMUM
CLAMPING
VOLTAGE
(See Fig. 2)
= 1A
@ I
P
V
C
VOLTS
7.0
9.8
13.4
19.0
24.0
43.0
51.0
MAXIMUM
CLAMPING
VOLTAGE
(See Fig. 2)
@8/20µs
VC @ I
PP
10.9V @ 43.0A
13.5V @ 42.0A
16.9V @ 34.0A
25.9V @ 21.0A
30.0V @ 17.0A
49.0V @ 12.0A
76.8V @ 9.0A
MAXIMUM
LEAKAGE
CURRENT
@V
WM
I
D
µA
125
20
10
1
1
1
1
°C
TYPICAL
CAPACITANCE
@0V, 1 MHz
C
pF
5
5
5
5
5
5
5
Note 1: Positive potential is applied from pin 1 to 2; pin 2 is ground.
Note 2: Do not test or surge from pin 2 to 1. PIV typically greater than 100V for the rectifier diode.
10,000
1,000
100
- Peak Pulse Current - Watts
PP
P
10
0.01 1 10 100 1,000 10,000
PEAK PULSE POWER VS PULSE TIME
FIGURE 1
td - Pulse Duration - µs
500W, 8/20µs Waveform
2 www.protekdevices.com05066.R4 8/03
120
PP
100
80
60
40
- Peak Pulse Current - % of I
20
PP
I
0
FIGURE 2
PULSE WAVE FORM
t
f
Peak Value I
-t
e
td = t
0 5 10 15 20 25 30
t - Time - µs
PP
IPP/2
TEST
WAVEFORM
PARAMETERS
tf = 8µs
td = 20µs
Page 3
GRAPHS
PSOT03LC
thru
PSOT36LC
POWER DERATING CURVE
100
80
60
40
% Of Rated Power
20
0
0 25 50 75 100 125 150
T
- Lead Temperature - °C
L
Peak Pulse Power
8/20µs
Average Power
FIGURE 4
OVERSHOOT & CLAMPING VOLTAGE FOR PSOT03LC
40
30
20
FIGURE 3
10
5 Volts per Division
0
ESD Test Pulse: 7 kilovolt, 1/30ns (waveform)
FIGURE 5
TYPICAL CLAMPING VOLTAGE VS PEAK PULSE CURRENT FOR PSOT05LC
16
12
8
4
- Clamping Voltage - Volts
C
V
0
0 2 4 6 8 10 12 14 16 18
I
- Peak Pulse Current - Amps
PP
3 www.protekdevices.com05066.R4 8/03
Page 4
PSOT03LC
thru
PSOT36LC
APPLICATION NOTE
The PSOTxxLC Series are low capacitance TVS arrays designed to protect I/O or data lines from the damaging effects of ESD or EFT. This product
series provides unidirectional & bidirectional protection, with a surge capability of 500 Watts PPP per line for an 8/20µs waveform and ESD protection >
40 kilovolts.
BIDIRECTIONAL COMMON-MODE CONFIGRUATION (Figure 1)
Two PSOTxxLC devices, when used in paralell, provide protection in a
common-mode configuration as depicted in Figure 1.
Circuit connectivity is as follows:
✔ I/O Line is connected to Device 1, Pin 1.
✔ I/O Line is connect to Device 2, Pin 2.
✔ Device 1, Pin 2 is connected to ground.
✔ Device 2, Pin 1 is connected to ground.
✔ Device 1 & 2, Pin 3 is not connected.
BIDIRECTIONAL DIFFERENTIAL-MODE CONFIGRUATION (Figure
1)
In addition, two PSOTxxLC devices, when used in paralell, provide
protection in a differential-mode configuration for Ethernet applications as
depicted in Figure 2.
Circuit connectivity is as follows:
✔ I/O Line 1 is connected to Device 1, Pin 1.
✔ I/O Line 1 is connect to Device 2, Pin 2.
✔ I/O Line 2 is connected to Device 1, Pin 1.
✔ I/O Line 2 is connect to Device 2, Pin 2.
✔ Device 1 & 2, Pin 3 is not connected.
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.
I/O LINE
1
2
Figure 2 - Differential-Mode Ethernet Protection
I/O 1
ETHERNET TRANSCEIVER
I/O 2
Figure 1 - Common-Mode I/O Port Protection
3
3
GND
1
3
3
2
2
1
2
1
✔ 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.
4 www.protekdevices.com05066.R4 8/03
Page 5
PACKAGE OUTLINE & DIMENSIONS
PSOT03LC
thru
PSOT36LC
PACKAGE OUTLINE
A
L
3
B
1
2
S
K
0º - 10º
PACKAGE DIMENSIONS
J
SOT-23
MILLIMETERS
INCHES
DIM MIN MAX MIN MAX
V
G
A
B
C
D
G
C
H
J
D
H
K
L
S
V
MOUNTING PAD
0.037” (0.95mm)
NOTES
1. Dimensioning and tolerances per ANSI Y14.5M, 1985.
2. Controlling Dimension: Inches
3. Pin 3 is the cathode (Unidirectional Only).
4. Dimensions are exclusive of mold flash and metal burrs.
2.80
1.20
0.89
0.37
1.78
0.013
0.085
0.45
0.89
2.10
0.45
3.04
1.40
1.11
0.50
2.04
0.100
0.177
0.60
1.02
2.50
0.60
0.1102
0.0472
0.0350
0.0150
0.0701
0.0005
0.0034
0.0180
0.0350
0.0830
0.0177
0.1197
0.0551
0.0440
0.0200
0.0807
0.0040
0.0070
0.0236
0.0401
0.0984
0.0236
0.079” (2.00mm)
0.033” (0.85mm)
0.033” (0.85mm)
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 reser ves 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.
TAPE & REEL ORDERING NOMENCLATURE
1. Surface mount product is taped and reeled in accordance
with EIA-481.
2. Suffix -T7 = 7 Inch Reel - 3,000 pieces per 8mm tape,
i.e.,
PSOT05LC-T7.
3. Suffix -T13 = 13 Inch Reel - 10,000 pieces per 8mm tape,
i.e.,
PSOT05LC-T13
.
Outline & Dimensions: Rev 1 - 11/01, 06012
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
5 www.protekdevices.com05066.R4 8/03
Loading...