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05066.R8 10/12 Page 1
05066
PSOT03LC - PSOT36LC
500 WATT ULTRA LOW CAPACITANCE TVS ARRAY
DESCRIPTION
The PSOTxxLC series are ultra low capacitance transient voltage suppressor (TVS) arrays, designed for power or data
line applicaons that provide protecon against ESD, terary lightning and switching transients. This series oers low
clamping voltage for the protecon of sensive components.
The PSOTxxLC series has a peak pulse power of 500 Was for an 8/20µs waveshape and is available in a SOT-23 pack-
age conguraon. This series meets the IEC 61000-4-2, 61000-4-4 and IEC 61000-4-5 requirements.
FEATURES
Compable with IEC 61000-4-2 (ESD): Air 15kV, Contact 8kV
Compable with IEC 61000-4-4 (EFT): 40A, 5/50ns
Compable with IEC 61000-4-5 (Surge): 12A, 8/20µs - Level 1(Line-
Ground) & Level 2(Line-Line)
500 Was Peak Pulse Power per Line(tp = 8/20µs)
Low Clamping Voltage
Ultra Low Capacitance
Available in Mulple Voltages Ranging from 3V to 36V
RoHS Compliant
REACH Compliant
MECHANICAL CHARACTERISTICS
Molded JEDEC SOT-23 Package
Approximate Weight: 8 milligrams
Lead-Free Pure-Tin Plang (Annealed)
Solder Reow Temperature:
Pure-Tin - Sn, 100: 260-270°C
Flammability Rang UL 94V-0
8mm Tape and Reel per EIA Standard 481
APPLICATIONS
Ethernet 10/100 Base T
Cellular Phones
FireWire
Audio/Video Inputs
Portable Electronics
PIN CONFIGURATION

2
3
1
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05066.R8 10/12 
05066
PSOT03LC - PSOT36LC
TYPICAL DEVICE CHARACTERISTICS
MAXIMUM RATINGS 
PARAMETER SYMBOL VALUE UNITS
Peak Pulse Power (tp = 8/20µs) - See Figure 1 PPP 500 Was
Operang Temperature TL-55 to 150 °C
Storage Temperature TSTG -55 to 150 °C
ELECTRICAL CHARACTERISTICS PER LINE 
PART
NUMBER
ote 
DEVICE

RATED

VOLTAGE
VWM
VOLTS
MINIMUM

VOLTAGE
ote
mA
V
VOLTS
MAXIMUM
CLAMPING
VOLTAGE

P = 1A
VC
VOLTS
MAXIMUM
CLAMPING
VOLTAGE

P
VC
VOLTS
MAXIMUM

CURRENT
WM
ID
µA
TYPICAL
CAPACITANCE
z
C
pF
PSOT03LC 03L 3.3 4.0 7.0 9.0 125 5
PSOT05LC 05L 5.0 6.0 9.8 11.0 20 5
PSOT08LC 08L 8.0 8.5 13.4 15.0 10 5
PSOT12LC 12L 12.0 13.3 19.0 23.0 1 5
PSOT15LC 15L 15.0 16.7 24.0 28.0 1 5
PSOT24LC 24L 24.0 26.7 43.0 46.0 1 5
PSOT36LC 36L 36.0 40.0 51.0 68.0 1 5
NOTES
1. Posive potenal is applied from pin 1 to 2; pin 2 is ground.
2. Do not test or surge from pin 2 to 1. PIV typically greater than 100V for recer diode.
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05066.R8 10/12 
05066
PSOT03LC - PSOT36LC
TYPICAL DEVICE CHARACTERISTICS
Peak Pulse Power
8/20µs
Average Power

POWER DERATING CURVE
TA






% Of Rated Power
TEST
WAVEFORM
PARAMETERS
tf = 8µs
td = 20µs
tf
e-t
Peak Value IPP
td = t/(IPP/2)

PULSE WAVE FORM
t - Time - µs

IPPPP






FIGURE 1

td
500W, 8/20µs Waveform

PPP




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05066
PSOT03LC - PSOT36LC
TYPICAL DEVICE CHARACTERISTICS
FIGURE 4







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05066.R8 10/12 
05066
PSOT03LC - PSOT36LC
SPICE MODEL
FIGURE 1
SPICE MODEL FOR

PARAMETER UNIT  LCRD
BV VSee Table 2 200
IBV µA 1 0.01
Cjo pF See Table 2 5
ISA See Table 2 1E-14
Vj V 0.6 0.6
M - 0.33 0.33
N- 1 1
RSOhms See Table 2 0.31
TT s1E-8 1E-9
EG eV 1.11 1.11

PART NUMBER BV Cjop IS Rs
PSOT03LC 4.5 438 1E-11 0.21
PSOT05LC 6.0 284 1E-11 0.14
PSOT08LC 8.5 146 1E-11 0.28
PSOT12LC 13.3 123 1E-13 0.40
PSOT15LC 16.7 102 1E-13 0.52
PSOT12LC 26.7 61 1E-13 1.54
ABD - Avalanche Breakdown Diode (TVS)
LCRD - Low Capacitance Recer Diode
Lg - Lead Inductance
ABD
LCRD
Lg
0.6nH
I/O
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05066
PSOT03LC - PSOT36LC
APPLICATION INFORMATION

Two PSOTxxLC devices used in parallel. Circuit connecvity is as follows:
I/O Line connected to Device 1, Pin 1.
I/O Line connected to Device 2, Pin 2.
Device 1, Pin 2 connected to ground.
Device 2, Pin 1 connected to ground.
Device 1 and 2, Pin 3 not connected.
CIRCUIT BOARD RECOMMENDATIONS
Circuit board layout is crical for electromagnec compability protecon. The following guidelines are recommended:
The protecon 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 conducve 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 parasic inductance.
Ground planes should be used whenever possible. For mullayer PCBs, use dedicated ground planes
2
3
12
3
1
I/O LINE
GND
2
3
12
3
1
I/O 1
I/O 2
Ethernet Transceiver

Two PSOTxxLC devices used in parallel. Circuit connecvity is as follows:
I/O Line 1 connected to Device 1, Pin 1.
I/O Line 1 connected to Device 2, Pin 2.
I/O Line 2 connected to Device 1, Pin 1.
I/O Line 2 connected to Device 2, Pin 2.
Device 1 and 2, Pin 3 not connected.
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05066
PSOT03LC - PSOT36LC
SOT-23 PACKAGE INFORMATION
OUTLINE DIMENSIONS
DIM MILLIMETERS INCHES
MIN MAX MIN MAX
A 2.80 3.04 0.110 0.120
B 1.20 1.40 0.047 0.055
C0.89 1.11 0.035 0.044
D 0.37 0.50 0.015 0.020
G1.78 2.04 0.070 0.081
H 0.013 0.100 0.001 0.004
J 0.085 0.177 0.003 0.007
K0.45 0.60 0.018 0.024
L0.89 1.02 0.035 0.040
S2.10 2.50 0.083 0.098
V0.45 0.60 0.018 0.024
NOTES
1. Controlling dimension: inches.
2. Dimensioning and tolerances per ANSI Y14.5M, 1985.
3. Pin 3 is the cathode (Unidireconal Only)
4. Dimensions are exclusive of mold ash and metal burrs.
PAD LAYOUT DIMENSIONS
DIM MILLIMETERS INCHES
MIN MAX MIN MAX
A 0.71 0.97 0.028 0.038
B 1.88 2.13 0.074 0.084
C0.71 0.97 0.028 0.038
D 0.81 1.07 0.032 0.042
NOTES
1. Controlling dimension: inches.
A
L
B S
GV
3
1 2
DH
C
K J
0°-10°
A
C
D
B
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05066
PSOT03LC - PSOT36LC
TAPE AND REEL
SPECIFICATIONS
REEL DIA. TAPE
WIDTH    D E F W   P tmax
178mm (7”) 8mm 3.15 ± 0.10 2.77 ± 0.10 1.30 ± 0.10 1.55 ± 0.10 1.75 ± 0.10 3.50 ± 0.05 8.00 ± 0.30 4.00 ± 0.10 2.00 ± 0.05 4.00 ± 0.10 0.228
NOTES
1. Dimensions are in millimeters.
2. Surface mount product is taped and reeled in accordance with EIA-481.
3. Sux - T7 = 7” Reel - 3,000 pieces per 8mm tape.
4. Sux - T13 = 13” Reel - 10,000 pieces per 8mm tape.
5. Marking on Part - marking code (see page 2) and date code.
Package outline, pad layout and tape specicaons per document number 06012.R2 8/10.
Top Cover Tape
K0
D
P0
P2
10 Pitches Cumulave
Tolerance on Tape. ± 0.2
A0
B0
P
E
F
W
User Direcon of Feed
Pin 1
t
ORDERING INFORMATION
BASE PART NUMBER
xx = V LEADFREE SUFFIX TAPE SUFFIX  REEL SIZE TUBE QTY
PSOTxxLC -LF -T7 3,000 7” n/a
PSOTxxLC -LF -T13 10,000 13” n/a
This device is only available in a Lead-Free conguraon.
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05066
PSOT03LC - PSOT36LC
COMPANY INFORMATION
COPYRIGHT © ProTek Devices 1998 - This literature is subject to all applicable copyright laws and is not for resale in any manner.
SPECIFICATIONS: ProTek reserves the right to change the electrical and or mechanical characteriscs described herein without noce.
DESIGN CHANGES: ProTek reserves the right to disconnue product lines without noce and that the nal judgement concerning selecon and specicaons is the buyer’s and that in furnishing engineering
and technical assistance. ProTek assumes no responsibility with respect to the selecon or specicaons of such products. ProTek makes no warranty, representaon or guarantee regarding the suitability of
its products for any parcular purpose, nor does ProTek assume any liability arising out of the applicaon or use of any product or circuit and specically disclaims any and all liability without limitaon special,
consequenal or incidental damages.
LIFE SUPPORT POLICY: ProTek Devices products are not authorized for use in life support systems without wrien consent from the factory.
COMPANY PROFILE
In business more than 20 years, ProTek Devices™ is a privately-held company located in Tempe, Arizona, that oers a product line of tran-
sient voltage suppressors (TVS); avalanche breakdown diodes; steering diode TVS arrays and other surge suppressor component products.
These TVS devices protect electronic systems from the eects of lightning, electrostac discharge (ESD), nuclear electromagnec pulses
(NEMP), inducve switching and EMI / RFI. ProTek Devices also oers high performance interface and linear products that include analog
switches; mulplexers; LED drivers; audio control ICs; RF and related high frequency products. The analog devices work in a host of con-
sumer; industrial; automove and other applicaons.
CONTACT US

2929 South Fair Lane
Tempe, Arizona 85282
USA

General: 602-431-8101
Sales: & Markeng: 602-414-5109
Customer Service: 602-414-5114
Product Technical Support: 602-414-5107
By Fax
General: 602-431-2288

Sales: sales@protekdevices.com
Customer Service: service@protekdevices.com
Technical Support: support@protekdevices.com

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Zervex
Singapore - 408538
Tel: +65-67488312
Fax: +65-67488313
Web
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