Page 1
05172
Only One Name Means ProTek’Tion™
APPLICATIONS
✔ USB Interface Ports
✔ Cellular Phones
✔ Video
✔ Handheld Electronics
✔ Personal Computers
IEC COMPATIBILITY (EN61000-4)
SR70
STEERING DIODE ARRAY
✔ 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)
FEATURES
✔ ESD Protection > 40 kilovolts
✔ 225 Milliwatt Continuous Power Dissipation
✔ Provides Two (2) Lines of Protection
✔ ✔
✔
LOW LEAKAGE CURRENT < 1.0µA
✔ ✔
✔ ✔
✔
ULTRA LOW CAPACITANCE: 3pF Typical
✔ ✔
MECHANICAL CHARACTERISTICS
✔ Molded JEDEC SOT-143
✔ Weight 35 milligrams (Approximate)
✔ Flammability rating UL 94V-0
✔ 8mm Tape and Reel Per EIA Standard 481
✔ Marking: Marking Code
PIN CONFIGURATION
SOT-143
V
I/O 1
N
1
2
105172.R1 8/03 www.protekdevices.com
V
P
4
I/O 2
3
Page 2
DEVICE CHARACTERISTICS
MAXIMUM RATINGS @ 25°C Unless Otherwise Specified
SR70
PARAMETER
Operating Temperature
Storage Temperature
Forward Peak Pulse Current (tp = 8/20µs)
SYMBOL VALUE
T
J
T
STG
I
PP
-55°C to 150°C
-55°C to 150°C°C
24 A
ELECTRICAL CHARACTERISTICS PER LINE @ 25°C Unless Otherwise Specified
PA RT
NUMBER
DEVICE
MARKING
REPETITIVE
PEAK
REVERSE
VOLTAGE
MINIMUM
REVERSE
BREAKDOWN
VOLTAGE
I@ 50µA
V
RRM
VOLTS
V
(BR)
VOLTS
SR70 PSA 70 85 1.5
Note 1: Measured between I/O pins and ground. 3pF typical between I/O pins.
MAXIMUM
REVERSE
LEAKAGE
CURRENT
@ V
RRM
I
R
µA
1
MAXIMUM
FORWARD
CLAMPING
VOLTAGE
8/20µs
IPP @ 1A
V
FC
VOLTS
MAXIMUM
FORWARD
CLAMPING
VOLTAGE
8/20µs
IPP @ 24A
V
FC
VOLTS
7
UNITS
°C
MAXIMUM
CAPACITANCE
(See Note 1)
@0V, 1 MHz
Cj
pF
10
10
- Forward Voltage - V
F
V
FOWARD VOLTAGE VS FORWARD CURRENT
8
6
4
2
0
0 5 10 15 20 25 30 35 40 45
FIGURE 1
Waveform
Parameters
tr - 8µs
td = 20µs
IF - Forward Current - A
FIGURE 2
120
PP
100
80
60
40
- Peak Pulse Current - % of I
20
PP
I
0
0 5 10 15 20 25 30
2 www.protekdevices.com05172.R1 8/03
PULSE WAVE FORM
t
f
Peak Value I
-t
e
td = t
t - Time - µs
PP
IPP/2
TEST
WAVEFORM
PARAMETERS
tf = 8µs
td = 20µs
Page 3
PACKAGE OUTLINE & DIMENSIONS
SR70
H
TYPICAL
DIM
Millimeters Inches
1
2.85
2
2.00
3
1.80
4
1.90
5
1.05
6
2.75
7
1.20
8
0.80
9
0.85
10
0.85
11
0.85
PACKAGE OUTLINE
A
G
L
S
B
J
PACKAGE DIMENSIONS
SOT-143
MILLIMETERS
INCHES
DIM MIN MAX MIN MAX
K
F
R
D
C
MOUNTING PAD
1
798
2
10
6
3
5
11
0.112
0.079
0.071
0.075
0.041
0.108
0.047
0.031
0.033
0.033
0.033
4
A
B
C
D
F
G
H
J
K
L
R
S
NOTES
1. Dimensioning and tolerances per ANSI Y14.5M, 1985.
2. Controlling Dimension: Inches
3. 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.,
3. Suffix-T13 = 13 Inch Reel - 10,00 pieces per 8mm tape,
i.e.,
2.80
1.20
0.84
0.39
0.79
1.78
0.013
0.08
0.46
0.445
0.72
2.11
SR70-T7.
SR70-T13.
3.04
1.39
1.14
0.50
0.93
2.03
0.10
0.15
0.60
0.60
0.83
2.48
0.110
0.047
0.033
0.015
0.031
0.070
0.0005
0.003
0.018
0.0175
0.028
0.083
0.0120
0.055
0.045
0.020
0.037
0.080
0.004
0.006
0.024
0.024
0.033
0.098
Outline & Dimensions: Rev 1 - 11/01, 06011
COPYRIGHT © ProTek Devices 2003
SPECIFICATIONS: ProTek reserves the right to change the electrical and or mechanical
characteristics described herein without notice (except JEDEC).
DESIGN CHANGES: ProTek reser ves 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
3 www.protekdevices.com05172.R1 8/03
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