* RoHS Directive 2002/95/EC Jan 27, 2003 including Annex.
** 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.
Customers should verify actual device performance in their specific applications.
CD143A-SR05~12 – Steering/TVS Diode Array Series
Features
■Lead free as standard
■RoHS compliant*
■Halogen free**
■ESD protection >25 kV
■Protects Vcc and two data lines
Applications
■Ethernet - 10/100/1000 Base T
■Firewire and USB
■Portable electronics
■Video/graphic cards
General Information
Absolute Maximum Ratings, TA= 25 °C (Unless Otherwise Noted)
Electrical Characteristics, TA= 25 °C (Unless Otherwise Noted)
Notes:
1. See Peak Pulse Power vs. Pulse Time.
2. From Pin 4 to Pin 1.
3. See Pulse Wave Form.
4. From Pin 1 to Pin 3, Pin 1 to Pin 2, Pin 3 to Pin 4, Pin 2 to Pin 4.
5. GND is connected to ground, REF is connected to +VCC and input applies to VCC = VWM. VOSC = 30 mV, F = 1 MHz.
The CD143A-SR05 and CD143A-SR12 devices provides ESD, EFT
and surge protection for the external ports of portable electronic
devices such as cell phones, 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 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), IEC 61000-4-4
(EFT) and IEC 61000-4-5 (Surge) requirements.
Parameter Symbol Value Unit
Peak Pulse Power (tp= 8/20 µs)1PPP 500 W
Peak Pulse Current (tp= 8/20 µs)
-SR05 IPP 30 A
-SR12 16
Operating Temperature TJ-55 ˚C to 150 ˚C ˚C
Storage Temperature TSTG -55 ˚C to 150 ˚C ˚C
Peak Forward Voltage (lf= 1 A 8/20 µs) VF1.5 V
1GND
I/O
REF
I/O2
4
3
*RoHS COMPLIANT
Parameter Symbol CD143A-SR05 CD143A-SR12 Unit
Breakdown Voltage Minimum @ 1 mA 2VBR 6.0 13.3 V
Working Peak Voltage 2VWM 5.0 12 V
Clamping Voltage Maximum @ IP= 1 A 2,3 VC9.8 19 V
Clamping Voltage Maximum @ IP2,3 VC20 @ 28 A 30 @ 16 A V
Leakage Current @ VWM 2ID5.0 1.0 µA
Capacitance Maximum per Data Line @ 0 V,
1 MHz 4,5 CJ10 10 pF
Specifications are subject to change without notice.
Customers should verify actual device performance in their specific applications.
CD143A-SR05~12 – Steering/TVS Diode Array Series
Product Dimensions
Recommended Pad Layout
B
D
I
K
E
G
H
F
J
C
A
MM
(INCHES)
DIMENSIONS:
1.90
(0.075)
1.70
(0.067)
1.20
(0.047)
0.80
(0.031)
0.85
(0.033)
0.85
(0.033)
0.85
(0.033)
1.05
(0.041)
1.90
(0.075)
2.75
(0.108)
2.85
(0.112)
MM
(INCHES)
DIMENSIONS:
Dimensions
A2.80 - 3.04
(0.110 - 0.12)
B1.78 - 2.03
(0.070 - 0.080)
C2.11 - 2.48
(0.083 - 0.098)
D1.20 - 1.39
(0.047 - 0.055)
E0.39 - 0.50
(0.015 - 0.020)
F0.79 - 0.93
(0.031 - 0.037)
G0.08 - 0.15
(0.003 - 0.006)
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)
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.
Block Diagram
1GND
I/O
REF
I/O2
4
3
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.
Typical Part Marking
CD143A-SR05 ................................................................................5A
CD143A-SR12 ..............................................................................12A
Specifications are subject to change without notice.
Customers should verify actual device performance in their specific applications.
CD143A-SR05~12 – Steering/TVS Diode Array Series
Performance Graphs
100
1,000
10,000
10
1 0.01 10 100 10,000 1,000
PPP – Peak Pulse Current (W)
td – Pulse Duration (µs)
500 W, 8/20 µs Waveform
20
40
60
80
100
120
0
0 30 25 20 15 10
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)
Average Power
Peak Pulse Power
8/20 µs
0
4
8
12
16
0 5 1 2 3
C - Capacitance - pF
VR – Reverse Voltage - Volts
4
How To Order
CD 143A - SR 05
Common Code
Chip Diode
Package
• 143A = SOT-143
Model
SR = Steering Diode Array
Working Peak Voltage
05 = 5.0 VWM (Volts)
12 = 12 VWM (Volts)
Peak Pulse Power vs Pulse Time Pulse Wave Form
Typical Capacitance vs. Reverse Voltage Power Derating Curve
Specifications are subject to change without notice.
Customers should verify actual device performance in their specific applications.
CD143A-SR05~12 – 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 A2.75 ±0.10
(0.108 - 0.004)
Carrier Length B3.30 ±0.10
(0.130 - 0.004)
Carrier Depth C1.25 ±0.10
(0.049 - 0.004)
Sprocket Hole d1.55 ±0.05
(0.061 - 0.002)
Reel Outside Diameter D178
(7.008)
Reel Inner Diameter D150.0
(1.969) Min.
Feed Hole Diameter D213.0 ±0.20
(0.512 - 0.008)
Sprocket Hole Position E1.75 ±0.10
(0.069 - 0.004)
Punch Hole Position F3.50 ±0.05
(0.138 - 0.002)
Punch Hole Pitch P4.00 ±0.10
(0.157 - 0.004)
Sprocket Hole Pitch P04.00 ±0.10
(0.157 - 0.004)
Embossment Center P12.00 ±0.05
(0.079 - 0.002)
Overall Tape Thickness T0.20 ±0.10
(0.008 - 0.004)
Tape Width W8.00 ±0.20
(0.315 - 0.008)
Reel Width W114.4
(0.567) Max.
Quantity per Reel —3,000
REV. 06/11
.......
.......
....... ..............
....... ..............
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:
