ETC SRDA5-6

05110
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PSRDA05-6
. . . engineered solutions for the transient environment™
LOW CAPACITANCE STEERING DIODE & TVS ARRAYS
APPLICATIONS
✔ Ethernet - 10/100 Base T
✔ Computer I/O Ports- SCSI, FireWire & USB
✔ Set Top Box Protection
IEC COMPATIBILITY (EN61000-4)
✔ 61000-4-2 (ESD): Air - 15kv, Contact - 8kv
✔ 61000-4-4 (EFT): 40A - 5/50ns
✔ 61000-4-5 (Surge): 24A, 8/20µs - Level 2(Line-Gnd) & Level 3(Line-Line)
SO-8
FEATURES
✔ 500 Watts Peak Pulse Power Dissipation(tp = 8/20µs)
✔ Bidirectional Configuration
✔ Available in 3.3V & 5V
✔ Protects Up to Six (6) I/O Ports
✔ ESD Protection > 40 kilovolts
✔ LOW CAPACITANCE -15pF
MECHANICAL CHARACTERISTICS
✔ Molded JEDEC SO-8
✔ Weight 15 milligrams (Approximate)
✔ Flammability Rating UL 94V-0
✔ 12mm Tape and Reel Per EIA Standard 481-1-A
✔ Device Marking Code & Logo
✔ Pin 1 Indicated By Dot on Package
CIRCUIT DIAGRAM
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I/O 1 1
8
GND
I/O 2 2
7
I/O 6
+VREF 3
6
I/O 5
I/O 3 4
5
I/O 4
1
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PSRDA05-6
DEVICE CHARACTERISTICS
MAXIMUM RATINGS @ 25°C Unless Otherwise Specified
PARAMETER
Operating Temperature
Storage Temperature
Maximum Forward Voltage @ 100 mA (See Note 1)
SYMBOL
VALUE
UNITS
TJ
-55°C to 150°C
°C
TSTG
-55°C to 150°C
°C
VF
1.1
Volts
Note 1: Measured between pins 8 to 1, 2, 3, 4, 5, 6, or 7.
ELECTRICAL CHARACTERISTICS PER LINE @ 25°C Unless Otherwise Specified
PART
NUMBER
(See Note 1)
DEVICE
MARKING
SGG
SGH
PSRDA3.3-6
PSRDA05-6
RATED
STAND-OFF
VOLTAGE
MINIMUM
BREAKDOWN
VOLTAGE
MAXIMUM
CLAMPING
VOLTAGE
(See Fig. 2)
MAXIMUM
CLAMPING
VOLTAGE
(See Fig. 2)
VWM
VOLTS
@ 1mA
V(BR)
VOLTS
@ IP = 1A
VC
VOLTS
3.3
5.0
4.0
6.0
6.5
9.8
MAXIMUM
LEAKAGE
CURRENT
MAXIMUM
CAPACITANCE
(See Note 2)
(See Figure 5)
@8/20µs
VC @ IPP
@VWM
ID
µA
0V @ 1 MHz
C
pF
10.9V @ 43.0A
13.5V @ 42.0A
125
20
15
15
Note 1: Spice model and parameters for this series are available on the ProTek Devices web site: www.protekdevices.com.
Note 2: 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 = mV, F = 1 MHz.
FIGURE 1
PEAK PULSE POWER VS PULSE TIME
IPP - Peak Pulse Current - % of IPP
PPP - Peak Pulse Current - Watts
10,000
500W, 8/20µs Waveshape
1,000
100
10
0.01
05110.R2 1/02
FIGURE 2
PULSE WAVE FORM
120
tf
100
Peak Value IPP
80
e-t
TEST
WAVEFORM
PARAMETERS
tf = 8µs
td = 20µs
60
40
td = t I /2
PP
20
0
1
10
100
td - Pulse Duration - µs
1,000
10,000
2
0
5
10
15
t - Time - µs
20
25
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PSRDA05-6
GRAPHS
FIGURE 3
POWER DERATING CURVE
100
40
Peak Pulse Power
8/20µs
5 Volts per Division
80
% Of Rated Power
FIGURE 4
OVERSHOOT & CLAMPING VOLTAGE FOR PSRDA05-6
60
40
30
20
10
20
0
Average Power
0
0
25
50
75
100
125
TL - Lead Temperature - °C
150
ESD Test Pulse: 8 kilovolt, 1/30ns (waveshape)
FIGURE 5
INPUT CAPACITANCE CIRCUIT
FIGURE 6
TYPICAL CLAMPING VOLTAGE VS PEAK PULSE CURRENT
12
I/O
VR
VC - Clamping Voltage - Volts
REF2
+VCC
G
8
PSRDA05-6
4
0
0
5
REF1
10
15
20
IPP - Peak Pulse Current - Amps
25
30
FIGURE 7
TYPICAL REVERSE VOLTAGE VS CAPACITANCE
8
C - Capacitance - pF
6
PSRDA05-6
4
2
0
0
05110.R2 1/02
1
2
3
VR - Reverse Voltage - Volts
3
4
5
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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 8/20µs 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.
USB PORT
VBUS
D+
DGND
CIRCUIT BOARD LAYOUT RECOMMENDATIONS
USB PORT
✔
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.
✔
USB CONTROLLER
Circuit board layout is critical for Electromagnetic Compatibility (EMC) protection. The following guidelines are
recommended:
VBUS
D+
DGND
GND
8
7
1
2
VBUS
6
5
3
4
USB PORT
VBUS
D+
DGND
Figure 1. Typical Differential-Mode USB Protection
Ground planes should be used whenever possible.
For multilayer PCBs, use ground vias.
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PACKAGE OUTLINE & DIMENSIONS
PACKAGE OUTLINE
SO-8
-A-
8
5
-B-
0.010” (0.25 MM)
P
M B M
4 PL
1
PACKAGE DIMENSIONS
4
DIM
D
G
C
R X 45º
0º - 10º
-TJ
K
0.010” (0.25 MM)
M T B S
F
A S
8 PL
MOUNTING PAD
4.80
3.80
1.35
0.35
0.40
1.27 BSC
0.18
0.10
5.80
0.25
INCHES
MIN
MAX
5.00
0.189
0.196
4.00
0.150
0.157
1.75
0.054
0.068
0.49
0.014
0.019
1.250
0.016
0.049
1.27 BSC 0.05 BSC 0.05 BSC
0.25
0.007
0.009
0.25
0.004
0.008
6.20
0.229
0.244
0.50
0.010
0.019
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.
0.050” ± 0.005”
0.030” ± 0.005”
0.160” ± 0.005”
A
B
C
D
F
G
J
K
P
R
MILLIMETERS
MIN
MAX
0.245” MIN
0.045” ± 0.005”
06009 Rev 1 -11/01
TAPE & REEL PACKAGING:
Surface mount product is taped and reeled in accordance with EIA-481, reel quantites
and sizes are as follows:
7 Inch Reel - 1,000 pieces per reel; 13 Inch Reel - 2,500 pieces per reel
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
COPYRIGHT © ProTek Devices 2001
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.
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