Features
Applications
n Halogen free**
n Firewire and USB
n ESD protection
n Portable electronics
n Protects two lines
n Video/graphic cards
n RoHS compliant*
n Ethernet - 10//100/1000 Base T
n Low leakage current
n Low capacitance
CD143A-SR2.8~3.3 - Steering/TVS Diode Array Series
General Information
The Model CD143A-SR2.8 and CD143A-SR3.3 devices provide ESD protection for the
external ports of portable electronic devices such as cell phones, handheld electronics
and personal computers.
GND
1
I/O
2
4
Vdd
3
I/O
The ESD protection provided by the component enables a data port to withstand a
minimum ±8 kV Contact / ±15 kV Air Discharge per the ESD test method specified
in IEC 61000-4-2. The device measures 2.80 mm x 1.20 mm and is available in a
SOT-143 package intended to be mounted directly onto an FR4 printed circuit board.
The Bourns® device will meet IEC 61000-4-2 (ESD) to 30 kV, IEC 61000-4-4 (EFT) to
40 A and IEC 61000-4-5 (Surge) to 12 A.
Absolute Maximum Ratings (@ TA = 25 °C Unless Otherwise Noted)
Parameter
Symbol
Value
Unit
Peak Pulse Power (tp= 8/20 µs) 1
PPP
200
W
12
A
Operating Supply Voltage (Vdd - Gnd)
Vdc
3.8
V
Vesd
±30
kV
Vio
(Gnd -0.5) to (Vdd +0.5)
V
-55 °C to +125 °C
°C
TSTG
-55 °C to +150 °C
°C
Peak Pulse Current (tp= 8/20 µs)
IPP
ESD Protection per IEC 61000-4-2
(Air, Contact)
DC Voltage at any I/O Pin
Operating Temperature
TJ
Storage Temperature
Electrical and Thermal Characteristics (@ TA = 25 °C Unless Otherwise Noted)
Parameter
Symbol
Breakdown Voltage Minimum @ 1 mA 2
VBR
Working Peak Voltage 2
Clamping Voltage Maximum @ IP = 1 A 2,3
Clamping Voltage Maximum @ IP 2,3
Leakage Current @ VWM
5
Capacitance Typical @ 0 V, 1 MHz 5
Notes:
1. See Peak Pulse Power vs. Pulse Time.
2. From Pin 4 to Pin 1.
3. See Pulse Wave Form.
CD143A-SR3.3
Unit
3.3
V
4.5
V
VWM
2.8
5.0
7.0
V
VC
8.5 @ 5 A
8.2 @ 10 A
V
VC
Reverse Leakage Current Maximum @ VWM 2
Forward Voltage Maximum @ 15 mA 4
CD143A-SR2.8
IL
5.0
µA
1.0
V
ID
1.0
µA
4.5
pF
Vf
CJ
4. From Pin 1 to Pin 4.
5. From Pin 1 to Pin 3, Pin 1 to Pin 2.
WARNING Cancer and Reproductive Harm - www.P65Warnings.ca.gov
* RoHS Directive 2015/863, Mar 31, 2015 and Annex.
**Bourns considers a product to be “halogen free” if (a) the Bromine (Br) content is 900 ppm or less; (b) the Chlorine (Cl) content is 900 ppm or less; and (c) the total Bromine (Br)
and Chlorine (Cl) content is 1500 ppm or less.
Specifications are subject to change without notice.
Users should verify actual device performance in their specific applications.
The products described herein and this document are subject to specific legal disclaimers as set forth on the last page of this document, and at www.bourns.com/docs/legal/disclaimer.pdf.
CD143A-SR2.8~3.3 - Steering/TVS Diode Array Series
Typical Characteristics
Clamping Voltage vs. Peak Pulse Current
120
Waveform Parameters
tt = 8 µs
td = 20 µs
tt
100
80
Clamping Voltage (V)
IPP – Peak Pulse Current (% of IPP)
Pulse Wave Form
et
60
40
td = t|IPP/2
20
0
5
0
10
15
20
25
30
12
11
10
9
8
7
6
5
4
3
2
1
0
Waveform Parameters
tr = 8 µs
td = 20 µs
4
5
6
7
t – Time (µs)
Forward Clamping Voltage vs. Peak Pulse Current
5
Input Capacitance (pF)
Forward Clamping Voltage (V)
10 11
12 13
14 15
5.0
4.5
4
3
2
Waveform Parameters
tr = 8 µs
td = 20 µs
1
4
5
6
7
8
9
10 11
12 13
14 15
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0.0
0.000
VDD = 3.3 V, GND = 0 V,
f = 1 MHz, T = 25 °C
0.825
Peak Pulse Current (A)
1.650
3.300
How to Order
CD 143A - SR 3.3 C
0.8
0.7
Common Code
Chip Diode
0.6
Package
143A = SOT-143
0.5
Model
SR = Steering Diode Array
0.4
0.3
Repetitive Peak Reverse Voltage
3.3 = 3.3 VRWM (Volts)
0.2
Customer Specific Requirements
VDD = 3.3 V, GND = 0 V,
f = 1 MHz, T = 25 °C
0.1
0.0
0.000
2.475
Input Voltage (V)
Typical Variation of CI/O-to-I/O vs. VIN
Capacitance (pF)
9
Typical Variation of CIN vs. VIN
6
0
8
Peak Pulse Current (A)
0.825
1.650
2.475
3.300
Input Voltage (V)
Specifications are subject to change without notice.
Users should verify actual device performance in their specific applications.
The products described herein and this document are subject to specific legal disclaimers as set forth on the last page of this document, and at www.bourns.com/docs/legal/disclaimer.pdf.
CD143A-SR2.8~3.3 - Steering/TVS Diode Array Series
Product Dimensions
This is a molded device. It weighs approximately 35 mg and has a flammability rating
of UL 94V-0. The dimensions for the packaged device are shown below.
Dimensions
A
2.80 - 3.04
(0.110 - 0.12)
B
1.80 - 2.02
(0.071 - 0.080)
C
2.25 - 2.55
(0.089 - 0.100)
D
1.2 - 1.4
(0.047 - 0.055)
E
0.35 - 0.50
(0.014 - 0.020)
F
0.76 - 0.89
(0.030 - 0.035)
G
0.09 - 0.18
(0.035 - 0.007)
H
0.46 - 0.60
(0.018 - 0.024)
I
0.9 - 1.1
(0.035 - 0.043)
J
0.72 - 0.83
(0.028 - 0.033)
K
0.05 - 0.1
(0.002 - 0.004)
A
B
xx
D
G
C
H
F
E
DIMENSIONS:
I
J
MM
(INCHES)
K
Recommended Pad Layout
Block Diagram
This is the footprint recommended for this SOT-143 device.
The device block diagram below includes the pin names and basic
electrical connections associated with each channel.
2.92
(0.115)
1.92
(0.076)
GND
1
I/O
2
4
Vdd
3
I/O
1.4
(0.055)
2.2
(0.087)
0.8
(0.031)
1.72
(0.068)
1.4
(0.055)
1.4
(0.055)
0.52
(0.020)
3.6
(0.142)
Typical Part Marking
INTERNAL
CONTROL
CODE
1.0
(0.039)
xx
DIMENSIONS:
MM
(INCHES)
DEVICE ID:
2A = CD143A-SR2.8
3A = CD143A-SR3.3
Specifications are subject to change without notice.
Users should verify actual device performance in their specific applications.
The products described herein and this document are subject to specific legal disclaimers as set forth on the last page of this document, and at www.bourns.com/docs/legal/disclaimer.pdf.
CD143A-SR2.8~3.3 - Steering/TVS Diode Array Series
Packaging Information
The surface mount product is packaged in an 8 mm x 4 mm tape and reel format per EIA-481 standard.
P
0
P
1
d
T
E
Index Hole
120 °
F
D2
W
A
D1 D
P
B
Trailer
.......
.......
End
C
Device
.......
.......
10 pitches (min.)
Leader
.......
.......
.......
.......
10 pitches (min.)
W1
Start
DIMENSIONS:
MM
(INCHES)
Direction of Feed
Item
Symbol
SOT-143
Carrier Width
A
3.19 ± 0.10
(0.126 ± 0.004)
Carrier Length
B
2.8 ± 0.10
(0.110 ± 0.004)
Carrier Depth
C
1.31 ± 0.10
(0.052 ± 0.004)
Sprocket Hole
d
1.5 +0.1/-0
(0.059 +0.004/-0)
Reel Outside Diameter
D
180 ± 3
(7.087 ± 0.012)
Reel Inner Diameter
D1
Feed Hole Diameter
D2
13.0 +0.5/-0.2
(0.512 +0.020/-0.008)
Sprocket Hole Position
E
1.75 ± 0.10
(0.069 ± 0.004)
Punch Hole Position
F
3.50 ± 0.05
(0.138 ± 0.002)
Punch Hole Pitch
P
4.00 ± 0.10
(0.157 ± 0.004)
Sprocket Hole Pitch
P0
4.00 ± 0.10
(0.157 ± 0.004)
Embossment Center
P1
2.00 ± 0.05
(0.079 ± 0.002)
50.0
MIN.
(1.969)
Overall Tape Thickness
T
0.6
MAX.
(0.024)
Tape Width
W
8.3
MAX.
(0.327)
Reel Width
W1
14.4
MAX.
(0.567)
Quantity per Reel
--
3,000
Asia-Pacific:
Tel: +886-2 2562-4117
Email: asiacus@bourns.com
Europe:
Tel: +36 88 885 877
Email: eurocus@bourns.com
The Americas:
Tel: +1-951 781-5500
Email: americus@bourns.com
www.bourns.com
REV. 08/20
Specifications are subject to change without notice.
Users should verify actual device performance in their specific applications.
The products described herein and this document are subject to specific legal disclaimers as set forth on the last page of this document, and at www.bourns.com/docs/legal/disclaimer.pdf.
Legal Disclaimer Notice
This legal disclaimer applies to purchasers and users of Bourns® products manufactured by or on behalf of Bourns, Inc. and its
affiliates (collectively, “Bourns”).
Unless otherwise expressly indicated in writing, Bourns® products and data sheets relating thereto are subject to change
without notice. Users should check for and obtain the latest relevant information and verify that such information is current and
complete before placing orders for Bourns® products.
The characteristics and parameters of a Bourns® product set forth in its data sheet are based on laboratory conditions, and
statements regarding the suitability of products for certain types of applications are based on Bourns’ knowledge of typical
requirements in generic applications. The characteristics and parameters of a Bourns® product in a user application may vary
from the data sheet characteristics and parameters due to (i) the combination of the Bourns® product with other components
in the user’s application, or (ii) the environment of the user application itself. The characteristics and parameters of a Bourns®
product also can and do vary in different applications and actual performance may vary over time. Users should always verify
the actual performance of the Bourns® product in their specific devices and applications, and make their own independent
judgments regarding the amount of additional test margin to design into their device or application to compensate for
differences between laboratory and real world conditions.
Unless Bourns has explicitly designated an individual Bourns® product as meeting the requirements of a particular industry
standard (e.g., ISO/TS 16949) or a particular qualification (e.g., UL listed or recognized), Bourns is not responsible for any
failure of an individual Bourns® product to meet the requirements of such industry standard or particular qualification. Users of
Bourns® products are responsible for ensuring compliance with safety-related requirements and standards applicable to their
devices or applications.
Bourns® products are not recommended, authorized or intended for use in nuclear, lifesaving, life-critical or life-sustaining applications, nor in any other applications where failure or malfunction may result in personal injury, death, or severe property or
environmental damage. Unless expressly and specifically approved in writing by two authorized Bourns representatives on a
case-by-case basis, use of any Bourns® products in such unauthorized applications might not be safe and thus is at the user’s
sole risk. Life-critical applications include devices identified by the U.S. Food and Drug Administration as Class III devices and
generally equivalent classifications outside of the United States.
Bourns expressly identifies those Bourns® standard products that are suitable for use in automotive applications on such
products’ data sheets in the section entitled “Applications.” Unless expressly and specifically approved in writing by two
authorized Bourns representatives on a case-by-case basis, use of any other Bourns® standard products in an automotive
application might not be safe and thus is not recommended, authorized or intended and is at the user’s sole risk. If Bourns
expressly identifies a sub-category of automotive application in the data sheet for its standard products (such as infotainment
or lighting), such identification means that Bourns has reviewed its standard product and has determined that if such Bourns®
standard product is considered for potential use in automotive applications, it should only be used in such sub-category of
automotive applications. Any reference to Bourns® standard product in the data sheet as compliant with the AEC-Q standard
or “automotive grade” does not by itself mean that Bourns has approved such product for use in an automotive application.
Bourns® standard products are not tested to comply with United States Federal Aviation Administration standards generally
or any other generally equivalent governmental organization standard applicable to products designed or manufactured for
use in aircraft or space applications. Bourns expressly identifies Bourns® standard products that are suitable for use in aircraft
or space applications on such products’ data sheets in the section entitled “Applications.” Unless expressly and specifically
approved in writing by two authorized Bourns representatives on a case-by-case basis, use of any other Bourns® standard
product in an aircraft or space application might not be safe and thus is not recommended, authorized or intended and is at the
user’s sole risk.
The use and level of testing applicable to Bourns® custom products shall be negotiated on a case-by-case basis by Bourns and
the user for which such Bourns® custom products are specially designed. Absent a written agreement between Bourns and the
user regarding the use and level of such testing, the above provisions applicable to Bourns® standard products shall also apply
to such Bourns® custom products.
Users shall not sell, transfer, export or re-export any Bourns® products or technology for use in activities which involve the
design, development, production, use or stockpiling of nuclear, chemical or biological weapons or missiles, nor shall they use
Bourns® products or technology in any facility which engages in activities relating to such devices. The foregoing restrictions
apply to all uses and applications that violate national or international prohibitions, including embargos or international
regulations. Further, Bourns® products and Bourns technology and technical data may not under any circumstance be
exported or re-exported to countries subject to international sanctions or embargoes. Bourns® products may not, without prior
authorization from Bourns and/or the U.S. Government, be resold, transferred, or re-exported to any party not eligible
to receive U.S. commodities, software, and technical data.
To the maximum extent permitted by applicable law, Bourns disclaims (i) any and all liability for special, punitive, consequential,
incidental or indirect damages or lost revenues or lost profits, and (ii) any and all implied warranties, including implied warranties
of fitness for particular purpose, non-infringement and merchantability.
For your convenience, copies of this Legal Disclaimer Notice with German, Spanish, Japanese, Traditional Chinese and Simplified Chinese
bilingual versions are available at:
Web Page: http://www.bourns.com/legal/disclaimers-terms-and-policies
PDF: http://www.bourns.com/docs/Legal/disclaimer.pdf
C1753 05/17/18R
