05096
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Only One Name Means ProT
ek’Tion™
PSRDA15-4
STEERING DIODE / TVS ARRA COMBO
Y
APPLICA
TIONS
✔
Ethernet - 10/100 Base T
✔
Computer I/O Ports - SCSI, FireWire & USB
✔
Set-Top Box Protection
✔
Video Card
IEC COMPA
TIBILITY
(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)
FEA
TURES
✔
500 Watts Peak Pulse Power per Line (tp=8/20µs)
✔
Unidirectional Configuration
✔
Available in 4 Voltage Types: 3.3V to 15V
✔
Protects Up to Four (4) I/O Ports
✔
ESD Protection > 40 kilovolts
✔
LOW CAPACITANCE: 15pF
✔
RoHS Compliant in Lead-Free Versions
MECHANICAL CHARACTERISTICS
✔
✔
✔
✔
Molded JEDEC SO-8 Package
Weight 70 milligrams (Approximate)
Available in Tin-Lead or Lead-Free Pure-Tin Plating(Annealed)
Solder Reflow Temperature:
Tin-Lead - Sn/Pb, 85/15: 240-245°C
Pure-Tin - Sn, 100: 260-270°C
✔
Flammability Rating UL 94V-0
✔
12mm Tape and Reel Per EIA Standard 481
✔
Marking: Logo, Marking Code, Date Code & Pin One Defined By Dot on Top of Package
SO-8
PIN CONFIGURA
TION
GND
I/O 4
I/O 3
GND
8
7
6
5
1
I/O 1
2
+V
REF
3
+V
REF
4
I/O 2
05096.R7 4/05
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DEVICE CHARACTERISTICS
MAXIMUN RATINGS @ 25°C Unless Otherwise Specified
PARAMETER
Peak Pulse Power (t
p
= 8/20µs) - See Figure 1
Operating Temperature
Storage Temperature
Maximum Forward Voltage @ 100mA (See Note 1)
Note 1:
Measured between pins 8 or 5 to 1, 2, 3, 4, 6 and 7.
SYMBOL
P
PP
T
J
T
STG
V
F
VALUE
500
-55°C to 150°C
-55°C to 150°C
1.1
UNITS
Watts
°C
°C
Volts
ELECTRICAL CHARACTERISTICS PER LINE @ 25°C Unless Otherwise Specified
PART
NUMBER
DEVICE
MARKING
RATED
STAND-OFF
VOLTAGE
MINIMUM
BREAKDOWN
VOLTAGE
MAXIMUM
CLAMPING
VOLTAGE
(See Fig. 2)
@ I
P
= 1A
V
C
VOLTS
6.5
9.8
19.0
24.0
MAXIMUM
CLAMPING
VOLTAGE
(See Fig. 2)
MAXIMUM
LEAKAGE
CURRENT
MAXIMUM
CAPACITANCE
(See Note 1)
(See Figure 5)
@0V, 1 MHz
C
j(SD)
pF
15
15
15
15
V
WM
VOLTS
PSRDA3.3-4
PSRDA05-4
PSRDA12-4
PSRDA15-4
PRA
PRB
PRD
PRE
3.3
5.0
12.0
15.0
@ 1mA
V
(BR)
VOLTS
4.0
6.0
13.3
16.7
@8/20µs
V
C
@ I
PP
10.9V @ 43.0A
13.5V @ 42.0A
25.9V @ 21.0A
30.0V @ 17.0A
@V
WM
I
D
µA
125
20
1
1
Note 1:
Capacitance measured at V
WM
= V
CC
connected between I/O pins to pin 8 and 5 (Gnd). V
R
= V
WM
@ 1MHz. As shown in Figure 5, REF1 is
connected to ground, REF2 is connected to +V
CC
, and input applies to V
CC
= 5V, V
sign
= mV, F = 1 MHz.
10,000
P
PP
- Peak Pulse Power - Watts
FIGURE 1
PEAK PULSE POWER VS PULSE TIME
I
PP
- Peak Pulse Current - % of I
PP
120
100
80
60
40
20
0
t
f
FIGURE 2
PULSE WAVE FORM
Peak Value I
PP
TEST
WAVEFORM
PARAMETERS
t
f
= 8µs
t
d
= 20µs
1,000
500W 8/20µs Waveform
e
-t
100
t
d
= t I /2
PP
10
0.1
1
10
100
t
d
- Pulse Duration - µs
1,000
10,000
0
5
10
15
t - Time - µs
20
25
30
05096.R7 4/05
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GRAPHS
FIGURE 3
POWER DERATING CURVE
40
Peak Pulse Power
8/20µs
5 Volts per Division
100
80
% Of Rated Power
FIGURE 4
OVERSHOOT & CLAMPING VOLTAGE FOR PSRDA05-4
30
60
20
40
20
Average Power
0
0
25
50
75
100
125
T
L
- 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 PSRDA05-4
12
V
C
- Clamping Voltage - Volts
8
I/O
+V
CC
4
V
R
G
0
0
REF1
5
10
15
20
I
PP
- Peak Pulse Current - Amps
25
30
FIGURE 7
INSERTION LOSS - PSRDA12-4
FIGURE 8
RETURN LOSS - PSRDA12-4
20 db
10 db per Division
10 db per Division
20 db
Ref 0 db
Ref 0 db
-20 db
-20 db
-50 db
100 MHz per Division
05096.R7 4/05
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-50 db
100 MHz per Division
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PSRDA15-4
APPLICA
TION NOTE
The PSRDAxx-4 Series are low capacitance, unidirectional 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 P
PP
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-4 Series provides up
to four (4) lines of protection in a differential-mode configuration as
depicted in Figure 1.
Circuit connectivity is as follows:
✔
Pins 1, 4, 6 and 7 are connected to the data lines.
✔
Pins 5 and 8 are connected to ground.
✔
Pins 2 and 3 are connected to the databus.
DIFFERENTIAL-MODE CONFIGURATION (Figure 2)
The PSRDAxx-4 Series also provides up to four (4) lines of protection
in a differential-mode configuration as depicted in Figure 2 for T1/E1
applications.
Circuit connectivity is as follows:
✔
Pins 1, 4, 6 and 7 are connected to the data lines.
✔
Pins 5 and 8 are connected to ground.
✔
Pins 2 and 3 are connected to the databus.
CIRCUIT BOARD LAYOUT RECOMMENDATIONS
Circuit board layout is critical for Electromagnetic Compat-
ibility (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 induc-
tance.
Ground planes should be used whenever possible.
For multilayer PCBs, use ground vias.
Figure 2. Typical Differential-Mode T1/E1 Protection
PTC
RTIP
PLC01-
6
RRING
PTC
T1/E1 TRANSCEIVER
4
3
2
1
Figure 1. Typical Differential-Mode USB Protection
USB PORT
D+
D-
V
BUS
4
3
2
1
V
BUS
GND
USB CONTROLLER
5
6
7
8
USB PORT
GND
GND
D+
D-
GND
V
BUS
✔
✔
✔
✔
5
6
7
8
GND
TTIP
GND
PTC
PLC01-
6
TRING
PTC
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PACKAGE OUTLINE & DIMENSIONS
PACKAGE OUTLINE
-A-
SO-8
8
5
-B - P
0.010 (0.25 MM) M B M
4 PL
+
PACKAGE DIMENSIONS
DIM
A
B
C
D
F
G
J
K
P
R
NOTES
1.
2.
3.
4.
5.
6.
- 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.
1
4
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
G
D
C
R x 45°
0° - 10°
K
+
0.010 (0.25 MM) M T B S A S
8 PL
0.050 ± 0.005
-T-
J
F
5.00
0.189
0.196
4.00
0.150
0.157
0.054
0.068
1.75
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
0.030 ± 0.005
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.,
PSRDA05-4-T7.
3. Suffix-LF = Lead-Free, Pure Tin Plating,
i.e.,
PSRDA05-4-LF-T7.
4. Suffix-T13 = 13 Inch Reel - 2,500 pieces per 12mm tape,
i.e.,
PSRDA05-4-T13.
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 © ProTek Devices 2005
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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