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05110
PSRDA3.3-6
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PSRDA05-6
STEERING DIODE/ TVS ARRAY COMBO
APPLICATIONS
Ethernet - 10/100 Base T Computer I/O Ports - SCSI, FireWire & USB Set-Top Box Protection VGA - Video Interface Industrial Controls
IEC COMPATIBILITY (EN61000-4)
61000-4-2 (ESD): Air - 15kV, Contact - 8kV 61000-4-4 (EFT): 40A - 5/50ns 61000-4-5 (Surge): 24A, 8/20s - Level 2(Line-Gnd) & Level 3(Line-Line)
SO-8
FEATURES
500 Watts Peak Pulse Power per Line (tp=8/20s) Bidirectional Configuration Available in 3.3V & 5V Protects Up to Six (6) Lines ESD Protection > 40 kilovolts Low Capacitance: 15pF RoHS Compliant
MECHANICAL CHARACTERISTICS
Molded JEDEC SO-8 Weight 70 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 12mm Tape and Reel Per EIA Standard 481 Marking: Marking Code, Logo, Date Code & Pin One Defined By Dot on Top of Package
PIN CONFIGURATION
GND
I/O 6
I/O 5
I/O 4
8
7
6
5
1
I/O 1
2
I/O 2
3
+VREF
4
I/O 3
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DEVICE CHARACTERISTICS
MAXIMUM RATINGS @ 25C Unless Otherwise Specified PARAMETER Peak Pulse Power (tp = 8/20s) - See Figure 1 Operating Temperature Storage Temperature Continuous Power Dissipation Maximum Forward Voltage @ 100mA (See Note 1)
Note 1: Measured between pins 8 to 1, 2, 3, 4, 5, 6 or 7.
SYMBOL PPP TL TSTG PPC VF
VALUE 500 -55 to 150 -55 to 150 1000 1.1
UNITS Watts C C mW Volts
ELECTRICAL CHARACTERISTICS PER LINE
PART NUMBER DEVICE MARKING RATED STAND-OFF VOLTAGE MINIMUM BREAKDOWN VOLTAGE
@ 25C Unless Otherwise Specified
MAXIMUM CLAMPING VOLTAGE (See Fig. 2) @ IP = 1A VC VOLTS 6.5 9.8
MAXIMUM CLAMPING VOLTAGE (See Fig. 2)
MAXIMUM LEAKAGE CURRENT
MAXIMUM CAPACITANCE (See Note 1) (See Figure 5) @0V, 1 MHz Cj(SD) pF 15 15
VWM VOLTS PSRDA3.3-6 PSRDA05-6 SGG SGH 3.3 5.0
@ 1mA V(BR) VOLTS 4.0 6.0
@8/20s VC @ IPP 10.9V @ 43.0A 13.5V @ 42.0A
@VWM ID A 125 20
Note 1: Capacitance measured at VWM = VCC connected between I/O pins to pin 8(Gnd). VR = VWM @ 1MHz. As shown in Figure 5, REF1 is connected to ground, REF2 is connected to +VCC, and input applies to VCC = 5V, Vsign = 30mV, F = 1 MHz.
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 t - Time - s
20
25
30
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PSRDA05-6
GRAPHS
100 80
% Of Rated Power
FIGURE 3 POWER DERATING CURVE
40 Peak Pulse Power 8/20s
5 Volts per Division
FIGURE 4 OVERSHOOT & CLAMPING VOLTAGE FOR PSRDA05-6
30
60
20
40 20 Average Power 0 0 25 50 75 100 125 TL - Lead Temperature - C 150
10
0 ESD Test Pulse: 8 kilovolt, 1/30ns (waveshape)
FIGURE 5 INPUT CAPACITANCE CIRCUIT
REF2
FIGURE 6 TYPICAL CLAMPING VOLTAGE VS PEAK PULSE CURRENT FOR PSRDA05-6
12
VC - Clamping Voltage - Volts
8
I/O
+VCC
4
VR
G
0 0 REF1 5 10 15 20 IPP - Peak Pulse Current - Amps 25 30
FIGURE 7 TYPICAL REVERSE VOLTAGE VS CAPACITANCE FOR PSRDA05-6
8
6
C - Capacitance - pF
4
2
0 0 1 2 3 VR - Reverse Voltage - Volts 4 5
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PSRDA05-6
APPLICATION NOTE
The PSRDAxx-6 Series are low capacitance, bidirectional TVS arrays that are designed to protect I/O or high speed data lines from the damaging effects of ESD or EFT. This product series has a surge capability of 500 Watts PPP per line for an 8/20s waveshape and offers ESD protection > 40kV. DIFFERENTIAL-MODE CONFIGURATION (Figure 1) Ideal for use in USB applications, the PSRDAxx-6 Series provides up to six (6) lines of protection in a differential mode configuration as depicted in Figure 1. Circuit connectivity is as follows: Pins 1, 2, 4, 5, 6 and 7 are connected to the datalines. Pin 8 is connected to ground. Pin 3 is connected to the databus.
Figure 1. Typical Differential-Mode USB Protection USB PORT VBUS
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.
D+ DGND USB PORT
USB CONTROLLER
VBUS
D+ GND
8 7 6 5
DGND

1
2
VBUS
3
4
USB PORT D+ DGND
VBUS
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PSRDA3.3-6
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PSRDA05-6
SO-8 PACKAGE OUTLINE & DIMENSIONS
PACKAGE OUTLINE
-A-
SO-8
8
5 -B - P
+ 0.010 (0.25 MM) M B M 4 PL
DIM A B C D F G J K P R
NOTES 1. 2. 3. 4. 5. 6.
PACKAGE DIMENSIONS MILLIMETERS MIN MAX 4.80 3.80 1.35 0.35 0.40 1.27 BSC 0.18 0.10 5.80 0.25 INCHES MIN MAX
1
4
G
D C R x 45 0 - 10
K 0.010 (0.25 MM) M T B S A S 8 PL
-T-
+
J
F
0.196 5.00 0.189 0.150 0.157 4.00 1.75 0.054 0.068 0.49 0.014 0.019 0.049 1.250 0.016 1.27 BSC 0.05 BSC 0.05 BSC 0.25 0.007 0.009 0.004 0.008 0.25 6.20 0.229 0.244 0.019 0.50 0.010
MOUNTING PAD
0.050 0.005 0.030 0.005
- T - = Seating Plane and Datum Surface. Dimensions "A" and "B" are Datum. Dimensions "A" and "B" do not include mold protrusion. Maximum mold protrusion is 0.015" (0.380 mm) per side. Dimensioning and tolerances per ANSI Y14.5M, 1982. Dimensions are exclusive of mold flash and metal burrs.
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. PSRDA05-6-T7. 3. Suffix-T13 = 13 Inch Reel - 2,500 pieces per 12mm tape, i.e., PSRDA05-6-T13. 4. Suffix - LF = Lead-Free, Pure-Tin Plating, i.e., PSRDA05-6-LF-T7. 5. No Suffix = Product Shipped in Tubes of 98 pcs per Tube.
0.160 0.005
0.245 MIN
0.045 0.005
Outline & Dimensions: Rev 1 - 11/01, 06009
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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