CD143A-SR05LC Datasheet by Bourns Inc.

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Features
RoHS compliant*
Halogen free**
ESD protection >15 kV
Protects Vcc and two data lines
Applications
Ethernet - 10/100/1000 Base T
Firewire and USB
Portable electronics
Video/graphic cards
Absolute Maximum Ratings (@ TA = 25 °C Unless Otherwise Noted)
Electrical and Thermal Characteristics (@ TA = 25 °C Unless Otherwise Noted)
CD143A-SR05LC - Steering/TVS Diode Array Series
*RoHS COMPLIANT
* RoHS Directive 2002/95/EC Jan. 27, 2003 including annex and RoHS Recast 2011/65/EU June 8, 2011.
**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.
Specifi cations are subject to change without notice.
The device characteristics and parameters in this data sheet can and do vary in different applications and actual device performance may vary over time.
Users should verify actual device performance in their specifi c applications.
Parameter Symbol Value Unit
Peak Pulse Current (tp= 8/20 µs) IPP 13 A
Operating Temperature TJ-55 °C to +125 °C
Storage Temperature TSTG -55 °C to +150 °C
Forward Voltage (If= 15 mA, Pin 1-4) Vf1V
Parameter Symbol Value Unit
Breakdown Voltage Minimum @ 2 mA 1VBR 6.1 V
Working Peak Voltage 1VWM 5.0 V
Clamping Voltage Maximum @ IP = 5 A 2,4 VC9.0 V
Clamping Voltage Maximum @ IPP 2,4 VC12.5 @ 13 A V
Leakage Current @ VWM 1ID1.0 µA
Capacitance Maximum between I/O Pins and Ground
@ VR = 0 V, f = 1 MHz 3 CIN 3pF
General Information
The Bourns® Model CD143A-SR05LC device provides ESD, EFT and surge
protection for the external ports of portable electronic devices such as cellphones,
handheld electronics and personal computers.
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 specifi ed
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), IEC 61000-4-4(EFT)
and IEC 61000-4-5 (Surge) requirements.
Notes:
1. From Pin 4 to Pin 1.
2. See Pulse Wave Form.
3. Pin 1 (GND) connected to Ground, Pin 4 (REF) connected to 5 V.
4. I/O to GND, REF connected to 5 V and GND connected to Ground.
1GND
I/O
REF
I/O2
4
3
BOURNS‘ 2.50 - 3.04 1.7a - 2.03 211-255 0.35 - 0.5 +J 0.76 - 0.93 0.08-0.18 0.46 - 0.60 0.54-1.14 0.72 - 0.53 0013-010
Specifi cations are subject to change without notice.
The device characteristics and parameters in this data sheet can and do vary in different
applications and actual device performance may vary over time.
Users should verify actual device performance in their specifi c applications.
CD143A-SR05LC - Steering/TVS Diode Array Series
Product Dimensions
This is a molded JEDEC SOT-143 device. It has a fl ammability rating of UL 94V-0.
The dimensions for the packaged device are shown below.
Typical Part Marking
CD143A-SR05LC ....................................................................... 5LC
Dimensions
A2.80 - 3.04
(0.110 - 0.12)
B1.78 - 2.03
(0.070 - 0.080)
C2.11 - 2.55
(0.083 - 0.100)
D1.2 - 1.4
(0.047 - 0.055)
E0.35 - 0.5
(0.014 - 0.020)
F0.76 - 0.93
(0.030 - 0.037)
G0.08 - 0.18
(0.003 - 0.007)
H0.46 - 0.60
(0.018 - 0.024)
I0.84 - 1.14
(0.033 - 0.045)
J0.72 - 0.83
(0.028 - 0.033)
K0.013 - 0.10
(0.0005 - 0.004)
Recommended Pad Layout
1.92
(0.076)
1.72
(0.068)
1.4
(0.055)
0.52
(0.020)
1.00
(0.039)
1.4
(0.055)
1.4
(0.055)
0.8
(0.031)
2.2
(0.087)
3.6
(0.142)
2.92
(0.115)
MM
(INCHES)
DIMENSIONS:
Block Diagram
The device block diagram below includes the pin names and basic
electrical connections associated with each channel.
B
D
I
K
E
G
H
F
J
C
A
MM
(INCHES)
DIMENSIONS:
This is the footprint recommended for this SOT-143 device.
1GND
I/O
REF
I/O2
4
3
%
20
40
60
80
100
120
0
03025201510
5
IPP – Peak Pulse Current (% of IPP)
t – Time (µs)
Test Waveform Parameters
tt = 8 µs
td = 20 µs
tt
et
td = t|IPP/2
0
20
40
60
80
100
0 25 50 75 100 125 150
% of Rated Power
TL – Lead Temperature (°C)
012345
Input Capacitance (pF)
0.0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
VDD = 5 V, GND = 0 V, f = 1 MHz, T = 25
°C
Peak Pulse Current (A)
4 5 6 7 8 9 10 11 12 13
Clamping Voltage (V)
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
Waveform
Parameters:
tr=8 µs
td=20 µs
I/O pin to GND pin
Typical Clamping Voltage vs. Peak Pulse Current Pulse Wave Form
CD143A-SR05LC - Steering/TVS Diode Array Series
Specifi cations are subject to change without notice.
The device characteristics and parameters in this data sheet can and do vary in different applications and actual device performance may vary over time.
Users should verify actual device performance in their specifi c applications.
Performance Graphs
Typical Capacitance vs. Reverse Voltage Power Derating Curve
How to Order
CD 143A - SR 05 LC
Common Code
Chip Diode
Package
143A = SOT-143
Model
SR = Steering Diode Array
Workint Peak Voltage
05 = 5.0 VWM (Volts)
Capacitance
LC = Low Capacitance
BOURNS‘
CD143A-SR05LC - Steering/TVS Diode Array Series
Application Information
The Model CD143A-SR05LC is designed to protect two data lines
against transient overvoltage events, as well as to limit the transient
voltage on the 5 V supply line of the protected device.
Pin 1 must be connected to the local Ground used by the protected
device and Pin 4 must be connected to the 5 V supply rail used by
the protected device, as shown in the fi gure below. Under no
circumstances should Pins 1 and 4 be left unconnected (fl oating).
To optimize the performance of the protection design, connections
to the CD143A-SR05LC should be as short as possible. This will
minimize the parasitic inductance of the printed circuit board traces.
An optional 0.1 µF bypass chip capacitor can be added from Pin 4
to Ground to enhance the ESD performance of the design when the
nearest bypass capacitor is a signifi cant distance from the Model
CD143A-SR05LC.
1
23
4
CD143A-SR05LC
GND
PROTECTED LINE #1
PROTECTED LINE #2
GND
OPTIONAL LOCAL
BYPASS CAPACITOR
VCC = 5 V
Specifi cations are subject to change without notice.
The device characteristics and parameters in this data sheet can and do vary in different applications and actual device performance may vary over time.
Users should verify actual device performance in their specifi c applications.
280:015 325:015 125:015 150:010 178:2 500 )M 130:020 175:010 350:010 400:010 400:020 200:010 020:0“: 800:020 BOURNS‘ BOURNS'
3312 - 2 mm SMD Trimming Potentiometer
.......
.......
....... ..............
....... ..............
PB
F
E
dT
120 °
D2
DD
1
W1
C
Index Hole
P
0
P
1
W
A
10 pitches (min.)
Direction of Feed
10 pitches (min.)
End
Trailer Device Leader
Start
MM
(INCHES)
DIMENSIONS:
CD143A-SR05LC - 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.
Item Symbol SOT-143
Carrier Width A 2.80 ± 0.15
(0.110 ± 0.006)
Carrier Length B 3.25 ± 0.15
(0.128 ± 0.006)
Carrier Depth C 1.25 ± 0.15
(0.049 ± 0.006)
Sprocket Hole d 1.50 ± 0.10
(0.059 ± 0.004)
Reel Outside Diameter D 178 ± 2
(7.008 ± 0.079)
Reel Inner Diameter D1 50.0
(1.969) MIN.
Feed Hole Diameter D2 13.0 ± 0.20
(0.512 ± 0.008)
Sprocket Hole Position E 1.75 ± 0.10
(0.069 ± 0.004)
Punch Hole Position F 3.50 ± 0.10
(0.138 ± 0.004)
Punch Hole Pitch P 4.00 ± 0.10
(0.157 ± 0.004)
Sprocket Hole Pitch P0 4.00 ± 0.20
(0.157 ± 0.008)
Embossment Center P1 2.00 ± 0.10
(0.079 ± 0.004)
Overall Tape Thickness T 0.20 ± 0.10
(0.008 ± 0.004)
Tape Width W 8.00 ± 0.20
(0.315 ± 0.008)
Reel Width W114.4
(0.567) MAX.
Quantity per Reel -- 3,000 REV. 03/15
Asia-Pacifi c:
Tel: +886-2 2562-4117
Fax: +886-2 2562-4116
EMEA:
Tel: +36 88 520 390
Fax: +36 88 520 211
The Americas:
Tel: +1-951 781-5500
Fax: +1-951 781-5700
www.bourns.com
Specifi cations are subject to change without notice.
The device characteristics and parameters in this data sheet can and do vary in different applications and actual device performance may vary over time.
Users should verify actual device performance in their specifi c applications.

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