CD143A SR70

*R
oH
S
CO
M
PL
IA
NT
Features
Applications
Lead free as standard
RoHS compliant*
Halogen free**
ESD protection
Protects 2 lines
Low leakage current: <1 µA
Low capacitance: 3 pF
Cell phones
Desktops
Laptops & notebooks
Portable electronics
CD143A-SR70 – Steering Diode Array Series
General Information
The CD143A-SR70 device provides ESD protection for the external
ports of portable electronic devices such as cell phones, handheld
electronics and personal computers. The device also provides EFT
and surge protection.
4
1
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.
2
3
Electrical Characteristics (@ TA = 25 °C Unless Otherwise Noted)
Parameter
Capacitance @ 0 V 1 MHz*
Symbol
Min.
Nom.
Cj
Repetitive Peak Reverse Voltage
Max.
Unit
10
pF
70
V
Reverse Breakdown Voltage I @ 50 µA
VBR
Forward Clamping Voltage 8/20 µs IPP @ 1 A
VFC
1.5
V
Forward Clamping Voltage 8/20 µs IPP @ 24 A
VFC
7
V
IR
1
µA
Reverse Leakage Current @ VRRM
ESD Protection: IEC 61000-4-2
Contact Discharge
Air Discharge
85
V
±8
±15
kV
kV
EFT Protection: IEC 61000-4-4 @ 5/50 ns
40
A
Surge Protection: IEC 61000-4-5 @ 8/20 µs
Level 2 (Line-Gnd) & Level 3 (Line-Line)
24
A
*Measured between I/O pins and ground. 3 pF typical between I/O pins.
Thermal Characteristics (@ TA = 25 °C Unless Otherwise Noted)
Parameter
Symbol
Min.
Nom.
Max.
Forward Peak Pulse Current (tp = 8/20 µs )
IPP
Operating Temperature Range
TJ
-55
25
+150
°C
TSTG
-55
25
+150
°C
Storage Temperature Range
24
Unit
A
* RoHS Directive 2002/95/EC Jan. 27, 2003 including annex and RoHS Recast 2011/65/EU June 8, 2011.
** Bourns follows the prevailing definition of “halogen free” in the industry. 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.
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 specific applications.
CD143A-SR70 – Steering Diode Array Series
Product Dimensions
This is a molded JEDEC SOT-143 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
B
D
G
C
H
F
E
DIMENSIONS:
I
J
MM
(INCHES)
K
Recommended Pad Layout
This is the footprint recommended for this SOT-143 device.
2.85
(0.112)
A
2.80 - 3.04
(0.110 - 0.12)
B
1.78 - 2.03
(0.070 - 0.080)
C
2.11 - 2.48
(0.083 - 0.098)
D
1.20 - 1.39
(0.047 - 0.055)
E
0.39 - 0.50
(0.015 - 0.020)
F
0.79 - 0.93
(0.031 - 0.037)
G
0.08 - 0.15
(0.003 - 0.006)
H
0.46 - 0.60
(0.018 - 0.024)
I
0.84 - 1.14
(0.033 - 0.045)
J
0.72 - 0.83
(0.028 - 0.033)
K
0.013 - 0.10
(0.0005 - 0.004)
Block Diagram
1.90
(0.075)
The device block diagram below includes the pin names and basic
electrical connections associated with each channel.
0.85
(0.033)
4
1.05
(0.041)
1.90
(0.075)
1
2.75
(0.108)
1.70
(0.067)
0.85
(0.033)
2
1.20
(0.047)
0.80
(0.031)
DIMENSIONS:
3
0.85
(0.033)
MM
(INCHES)
Typical Part Marking
CD143A-SR70..............................................................................PSA
Device Pin Out
Pin
Function
1
VN
2
I/O 1
3
I/O 2
4
VP
Specifications 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 specific applications.
CD143A-SR70 – Steering 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
Carrier Width
A
Carrier Length
B
Carrier Depth
C
Sprocket Hole
d
Reel Outside Diameter
D
Reel Inner Diameter
D1
Feed Hole Diameter
D2
Sprocket Hole Position
E
Punch Hole Position
F
Punch Hole Pitch
P
Sprocket Hole Pitch
P0
Embossment Center
P1
Overall Tape Thickness
T
Tape Width
W
Reel Width
W1
Quantity per Reel
—
SOT-143
2.75 ±0.10
(0.108 - 0.004)
3.30 ±0.10
(0.130 - 0.004)
1.25 ±0.10
(0.049 - 0.004)
1.55 ±0.05
(0.061 - 0.002)
178
(7.008)
50.0
Min.
(1.969)
13.0 ±0.20
(0.512 - 0.008)
1.75 ±0.10
(0.069 - 0.004)
3.50 ±0.05
(0.138 - 0.002)
4.00 ±0.10
(0.157 - 0.004)
4.00 ±0.10
(0.157 - 0.004)
2.00 ±0.05
(0.079 - 0.002)
0.20 ±0.10
(0.008 - 0.004)
8.00 ±0.20
(0.315 - 0.008)
14.4
Max.
(0.567)
How To Order
Common Code
Chip Diode
Package
• 143A = SOT-143
Model
SR = Steering Diode Array
Repetitive Peak Reverse Voltage
70 = 70 VRWM (Volts)
CD 143A - SR 70
Asia-Pacific: 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
3,000
Specifications 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 specific applications.
REV. 07/14
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