PROTEC SR70

05172
SR70
Only One Name Means ProTek’Tion™
ultra low capacitance steering diode array
Description
The SR70 is an ultra low capacitance steering diode array. Designed for protection against Electrostatic Discharge
(ESD), Electrical Fast Transients (EFT) and secondary lightning threats, this device is ideal for use in high-speed signal
interface application such as USB, microprocessor bus and mobile electronics.
SOT-143 package
The SR70 is capable of protecting one line pair or two single lines via the steering of transient voltage to power lines
or ground. Its ultra low capacitance allows maintenance of signal integrity for high-speed data lines while protecting
the circuit ICs from the damage of severe transients. An extremely low leakage current makes the SR70 suitable for
battery powered devices and POE applications. The SR70 is available in the small SOT-143 package, which reduces
internal lead inductance for low, overshoot voltage during fast front time transient events like ESD. This device meets
the IEC 61000-4-2 and IEC 61000-4-4 requirements.
Features
applications
• Compatible with IEC 61000-4-2 (ESD): Air - 15kV, Contact - 8kV
• Compatible with IEC 61000-4-4 (EFT): 40A - 5/50ns
• Compatible with IEC 61000-4-5 (Surge): 24A, 8/20µs - Level 2(LineGnd) & Level 3 (Line-Line)
• 225 Milliwatts Continuous Power Dissipation
• Provides Two Lines of Protection
• Low Leakage Current < 1.0µA
• Ultra Low Capacitance: 3pF Typical
• RoHS Compliant
• REACH Compliant
• USB Interface Ports
• POE Applications
• Video
• Handheld Electronics
• Laptops
Mechanical characteristics
• Molded JEDEC SOT-143 Package
• Approximate Weight: 9 milligrams
• Lead-Free Pure-Tin Plating (Annealed)
• Solder Reflow Temperature:
Pure-Tin - Sn, 100: 260-270°C
• 8mm Tape and Reel Per EIA Standard 481
• Flammability Rating UL 94V-0
PIN CONFIGURATION
VN 1
4 VP
I/O 1 2
05172.R7 8/10
3 I/O 2
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05172
SR70
Only One Name Means ProTek’Tion™
typical device characteristics
MAXIMUM RATINGS @ 25°C Unless Otherwise Specified
PARAMETER
SYMBOL
VALUE
UNITS
TA
-55 to 150
°C
Storage Temperature
TSTG
-55 to 150
°C
Forward Peak Pulse Current (tp = 8/20µs)
IPP
24
A
Operating Temperature
ELECTRICAL CHARACTERISTICS PER LINE @ 25°C Unless Otherwise Specified
PART
NUMBER
SR70
DEVICE
MARKING
REPETITIVE
PEAK
REVERSE
VOLTAGE
MAXIMUM
REVERSE
breakdown
voltage
MAXIMUM
REVERSE
LEAKAGE
CURRENT
VRRM
VOLTS
I @ 50µA
V(BR)
VOLTS
70
85
PSA
MAXIMUM
FORWARD
CLAMPING
VOLTAGE
8/20µs
I PP @ 24A
V FC
VOLTS
maximum
CAPACITANCE
(Note 1)
@ V RRM
IR
µA
MAXIMUM
FORWARD
CLAMPING
VOLTAGE
8/20µs
I PP @ 1A
V FC
VOLTS
1
1.5
7
10
0V, 1MHz
Cj
pF
notes
1. Measured between I/O pins and ground.
figure 1
pulse wave form
IPP - Peak Pulse Current - % of IPP
120
100
TEST
WAVEFORM
PARAMETERS
tf = 8µs
td = 20µs
Peak Value IPP
80
e-t
60
40
td = t/(IPP/2)
20
0
05172.R7 8/10
tf
0
5
10
15
t - Time - µs
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25
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05172
SR70
Only One Name Means ProTek’Tion™
SOT-143 package information
A
outline dimensions
dim
millimeters
inches
min
max
min
max
A
2.80
3.04
0.110
0.120
B
1.20
1.39
0.047
0.055
C
0.84
1.14
0.033
0.045
D
0.39
0.50
0.015
0.020
F
0.79
0.93
0.031
0.037
G
1.78
2.03
0.070
0.080
J
0.08
0.15
0.003
0.006
K
0.46
0.60
0.018
0.024
L
0.445
0.60
0.0175
0.024
L1
0.40
0.60
0.016
0.024
R
0.72
0.83
0.028
0.033
S
2.11
2.48
0.083
0.098
L
G
B S
J
K
L1
F
D
H
C
R
NOTEs
1. Dimensioning and tolerances per ANSI Y14.M, 1985.
2. Controlling dimension: inches.
3. Dimensions are exclusive of mold flash and metal burrs.
pad layout dimensions
dim
millimeters
A
C
inches
min
max
min
max
A
1.88
2.13
0.074
0.084
B
1.80
2.06
0.071
0.081
C
0.71
0.97
0.028
0.038
D
0.76
1.02
0.030
0.040
E
1.07
1.32
0.042
0.052
F
0.71
0.97
0.028
0.038
B
D
E
F
NOTES
1. Controlling dimension: inches.
05172.R7 8/10
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05172
SR70
Only One Name Means ProTek’Tion™
TAPE AND REEL
P0
t
10 Pitches Cumulative
Tolerance on Tape. ± 0.2
P2
D
E
Top Cover Tape
Pin 1
A0
F
W
K0
B0
P
User Direction of Feed
specifications
Reel Dia.
Tape
Width
178mm (7”)
8mm
A0
B0
K0
D
E
F
W
P0
P2
P
3.10 ± 0.10 2.70 ± 0.10 1.35 ± 0.10 1.50 ± 0.10 1.75 ± 0.10 3.50 ± 0.05 8.00 ± 0.30 4.00 ± 0.10 2.00 ± 0.05 4.00 ± 0.10
tmax
0.25
Notes
1.
2.
3.
4.
5.
Dimensions are in millimeters.
Surface mount product is taped and reeled in accordance with EIA-481.
Suffix - T7 = 7” Reel - 3,000 pieces per 8mm tape.
Suffix - T13 = 13” Reel - 10,000 pieces per 8mm tape.
Marking on Part - marking code (see page 2) and date code.
Package outline, pad layout and tape specifications per document number 06011.R4 8/10.
ORDERING INFORMATION
base PART NUMBER
LEADFREE SUFFIX
TAPE SUFFIX
QTY/REEL
REEL SIZE
TUBE qty
SR70
-LF
-T7
3000
7”
n/a
SR70
-LF
-T13
10,000
13”
n/a
05172.R7 8/10
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05172
SR70
Only One Name Means ProTek’Tion™
company information
COMPANY PROFILE
ProTek Devices, based in Tempe, Arizona USA, is a manufacturer of Transient Voltage Suppression (TVS) products designed specifically for
the protection of electronic systems from the effects of lightning, Electrostatic Discharge (ESD), Nuclear Electromagnetic Pulse (NEMP), inductive switching and EMI/RFI. With over 25 years of engineering and manufacturing experience, ProTek designs TVS devices that provide
application specific protection solutions for all electronic equipment/systems.
ProTek Devices Analog Products Division, also manufactures analog interface, control, RF and power management products.
CONTACT US
Corporate Headquarters
2929 South Fair Lane
Tempe, Arizona 85282
USA
By Telephone
General: 602-431-8101
Sales: 602-414-5109
Customer Service: 602-414-5114
By Fax
General: 602-431-2288
By E-mail:
Sales: [email protected]
Customer Service: [email protected]
Technical Support: [email protected]
Web
www.protekdevices.com
www.protekanalog.com
COPYRIGHT © ProTek Devices 2002 - This literature is subject to all applicable copyright laws and is not for resale in any manner.
SPECIFICATIONS: ProTek reserves the right to change the electrical and or mechanical characteristics described herein without notice.
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 makes no warranty, representation or guarantee regarding the suitability of
its products for any particular purpose, nor does ProTek assume any liability arising out of the application or use of any product or circuit and specifically disclaims any and all liability without limitation special,
consequential or incidental damages.
LIFE SUPPORT POLICY: ProTek Devices products are not authorized for use in life support systems without written consent from the factory.
05172.R7 8/10
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