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05066
PSOT03LC
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PSOT36LC
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, 8/20s - Level 1(Line-Gnd) & Level 2(Line-Line) F E AT U R E S ESD Protection > 40 kilovolts 500 Watts Peak Pulse Power per Line (tp=8/20s) Low Clamping Voltage Available in 3V - 36V Ultra Low Capacitance: 5pF RoHS Compliant MECHANICAL CHARACTERISTICS
SOT-23
Molded JEDEC SOT-23 Package Weight 8 milligrams (Approximate) Available in Lead-Free Pure-Tin Plating(Annealed) Solder Reflow Temperature: Pure-Tin - Sn, 100: 260-270C Consult Factory for Leaded Device Availability Flammability Rating UL 94V-0 8mm Tape and Reel Per EIA Standard 481 Marking: Marking Code
PIN CONFIGURATION
1 3 2
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PSOT36LC
DEVICE CHARACTERISTICS
MAXIMUM RATINGS @ 25C Unless Otherwise Specified
PARAMETER
Peak Pulse Power (tp = 8/20s) - See Figure 1 Operating Temperature Storage Temperature
SYMBOL
PPP TL TSTG
VALUE
500 -55 to 150 -55 to 150
UNITS
Watts C C
ELECTRICAL CHARACTERISTICS PER LINE
PART NUMBER (Note 1) DEVICE MARKING RATED STAND-OFF VOLTAGE MINIMUM BREAKDOWN VOLTAGE (See Note 2) @ 1mA V(BR) VOLTS
@ 25C Unless Otherwise Specified MAXIMUM CLAMPING VOLTAGE (See Fig. 2) MAXIMUM LEAKAGE CURRENT TYPICAL CAPACITANCE
MAXIMUM CLAMPING VOLTAGE (See Fig. 2) @ IP = 1A VC VOLTS
V WM VOLTS
@8/20s VC @ IPP
@VWM ID A
0V @ 1 MHz C pF
PSOT03LC PSOT05LC PSOT08LC PSOT12LC PSOT15LC PSOT24LC PSOT36LC
03L 05L 08L 12L 15L 24L 36L
3.3 5.0 8.0 12.0 15.0 24.0 36.0
4.0 6.0 8.5 13.3 16.7 26.7 40.0
7.0 9.8 13.4 19.0 24.0 43.0 51.0
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
125 20 10 1 1 1 1
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
PPP - Peak Pulse Power - Watts
FIGURE 1 PEAK PULSE POWER VS PULSE TIME
IPP - Peak Pulse Current - % of IPP
120 100 80 60 40 20 0 tf
FIGURE 2 PULSE WAVE FORM
Peak Value IPP TEST WAVEFORM PARAMETERS tf = 8s td = 20s
1,000
500W 8/20s Waveform
e-t
100
td = t I /2 PP
10 0.1
1
10 100 td - Pulse Duration - s
1,000
10,000
0
5
10
15 20 t - Time - s
25
30
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PSOT36LC
GRAPHS
100 80
% Of Rated Power
FIGURE 3 POWER DERATING CURVE
Peak Pulse Power 8/20s
60
40 20 Average Power 0 0 25 50 75 100 125 TL - Lead Temperature - C 150
FIGURE 4 OVERSHOOT & CLAMPING VOLTAGE FOR PSOT03LC
40
5 Volts per Division
30
20
10
0
ESD Test Pulse: 7 kilovolt, 1/30ns (waveform)
16
VC - Clamping Voltage - Volts
FIGURE 5 TYPICAL CLAMPING VOLTAGE VS PEAK PULSE CURRENT FOR PSOT05LC
12
8
4
0 0 2 4 6 8 10 12 IPP - Peak Pulse Current - Amps 14 16 18
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PSOT03LC
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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 8/20s 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.
Figure 1 - Common-Mode I/O Port Protection I/O LINE
1 3 2 3
2 1
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.
I/O 1 GND
Figure 2 - Differential-Mode Ethernet Protection
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.
ETHERNET TRANSCEIVER
1 3 2
I/O 2
2 3 1

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PSOT36LC
SOT-23 PACKAGE OUTLINE & DIMENSIONS
PACKAGE OUTLINE SOT-23
A L 0 - 10 3 B 1 2 S K J
PACKAGE DIMENSIONS
DIM MILLIMETERS MIN MAX 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 INCHES MIN MAX 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
V
G
C
D
H
A B C D G H J K L S V
NOTES 1. 2. 3. 4.
MOUNTING PAD
0.037" (0.95mm)
Dimensioning and tolerances per ANSI Y14.5M, 1985. Controlling Dimension: Inches Pin 3 is the cathode (Unidirectional Only). Dimensions are exclusive of mold flash and metal burrs.
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. 4. Suffix - LF = Lead-Free, Pure-Tin Plating, i.e., PSOT05LC-LF-T7. Outline & Dimensions: Rev 1 - 11/01, 06012
0.079" (2.00mm) 0.033" (0.85mm)
0.033" (0.85mm)
COPYRIGHT (c) 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
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