M
PL
IA
NT
Features
■
RoHS compliant*
■
Protects up to four I/O ports
■
Unidirectional configuration
■
ESD protection: 30 kV max.
■
Low capacitance: 15 pF
Applications
■
Ethernet - 10/100 Base T
■
Computer I/O ports - SCSI, FireWire
*R
oH
S
CO
and USB
■
Set-top box protection
■
Video cards
General Information
The markets of portable communications, computing and video equipment are
challenging the semiconductor industry to develop increasingly smaller electronic
components.
Bourns offers Steering Diode/Transient Voltage Suppressor Array combination diodes
for surge and ESD protection applications in an eight lead narrow body SOIC package
size format. Bourns
®
Chip Diodes conform to JEDEC standards, are easy to handle on
standard pick and place equipment and their flat configuration minimizes roll away.
The Bourns device will meet IEC 61000-4-2 (ESD), IEC 61000-4-4 (EFT) and
IEC 61000-4-5 (Surge) requirements.
Electrical Characteristics (@ T
A
= 25 °C Unless Otherwise Noted)
Parameter
Minimum Breakdown Voltage @ 1 mA
Working Peak Voltage
Maximum Clamping Voltage V
C
@ I
P 1
Maximum Clamping Voltage
@ 8/20 µs V
C
@ I
PP 1
Maximum Leakage Current @ V
WM
Maximum Cap. Bidirectional @ 0 V, 1 MHz
ESD Protection per IEC 61000-4-2
Contact - Min.
Contact - Max.
Air - Min.
Air - Max.
Peak Pulse Power (t
p
= 8/20 µs)
2
Maximum Forward Voltage @ 10 mA
Notes:
1. See Pulse Waveform.
2. See Peak Pulse Power vs. Pulse Time.
3. Measured between pins 8 or 5 to 1, 2, 3, 4, 6 and 7.
1
2
3
4
8
7
6
5
Thermal Characteristics (@ T
A
= 25 °C Unless Otherwise Noted)
Parameter
Operating Temperature
Storage Temperature
Symbol
T
J
T
STG
Max.
-55 to +150
-55 to +150
Unit
°C
°C
PR
A
CDNBS08-SRDAxx-4 Series - Steering Diode/TVS Array Combo
Symbol
V
BR
V
WM
V
F
V
F
I
D
C
J(SD)
CDNBS08-
SRDA3.3-4
4.0
3.3
8.0
10.9 V
@ 43 A
125
SRDA05-4
6.0
5.0
9.8
13.5 V
@ 42 A
20
15
±8
±30
±15
±30
500
1.1
SRDA12-4
13.3
12.0
19.0
25.9 V
@ 27 A
1
SRDA15-4
16.7
15.0
24.0
30.0 V
@ 17 A
1
Unit
V
V
V
V
µA
pF
ESD
kV
W
V
P
PP
V
F
*RoHS Directive 2002/95/EC Jan. 27, 2003 including annex and RoHS Recast 2011/65/EU June 8, 2011.
Specifications are subject to change without notice.
Customers should verify actual device performance in their specific applications.
CDNBS08-SRDAxx-4 Series - Steering Diode/TVS Array Combo
Product Dimensions
This is an RoHS compliant molded JEDEC narrow body SO-8
package with 100 % Sn plating on the lead frame. It weighs
approximately 15 mg and has a flammability rating of UL 94V-0.
A
J
45 °
NOM.
B
C
4°±4°
H
7 ° NOM.
4 PLCS.
D
DIMENSIONS = MILLIMETERS
(INCHES)
E
Recommended Footprint
A
B
G
D
C
I
Dimensions
7 ° NOM.
3 PLCS.
A
B
C
D
1.143 - 1.397
(0.045 - 0.065)
0.635 - 0.889
(0.025 - 0.035)
6.223
Min.
(0.245)
Min.
3.937 - 4.191
(0.155 - 0.165)
1.016 - 1.27
(0.040 - 0.050)
E
F
K
L
E
Dimensions
A
B
C
D
E
F
G
H
I
J
K
L
4.80 - 5.00
(0.189 - 0.197)
3.81 - 4.00
(0.150 - 0.157)
5.80 - 6.20
(0.228 ± 0.244)
0.36 - 0.51
(0.014 - 0.020)
1.35 - 1.75
(0.053 - 0.069)
0.102 - 0.203
(0.004 - 0.008)
0.25 - 0.50
(0.010 - 0.020)
0.51 - 1.12
(0.020 - 0.044)
0.190 - 0.229
(0.0075 - 0.0090)
4.60 - 5.21
(0.181 - 0.205)
0.28 - 0.79
(0.011 - 0.031)
1.27
(0.050)
Typical Part Marking
CDNBS08-SRDA3.3-4............................................................... PRA
CDNBS08-SRDA05-4................................................................ PRB
CDNBS08-SRDA12-4................................................................ PRD
CDNBS08-SRDA15-4................................................................ PRE
How to Order
CD NBS08 - SRDA 3.3 - 4
Common Code
Chip Diode
Package
NBS08 = Narrow Body SOIC8 Package
Model
SRDA = Steering/TVS Diode Array
Working Peak Reverse Voltage
3.3 = 3.3 V
RWM
(Volts)
Number of Protection Lines
4 = 4 Lines
Specifications are subject to change without notice.
Customers should verify actual device performance in their specific applications.
CDNBS08-SRDAxx-4 Series - Steering Diode/TVS Array Combo
Performance Graphs
Peak Pulse Power vs Pulse Time
10,000
I
PP
– Peak Pulse Current (% of I
PP
)
P
PP
– Peak Pulse Power (W)
Pulse Waveform
120
100
80
60
40
20
0
t
d
= t
|
I
PP
/2
t
t
Test Waveform Parameters
t
t
= 8 µs
t
d
= 20 µs
e
t
1,000
500 W, 8/20 µs Waveform
100
10
0.01
1
10
100
1,000
10,000
0
5
10
15
t – Time (µs)
20
25
30
t
d
– Pulse Duration (µs)
Block Diagram
8
7
6
5
Power Derating Curve
100
80
60
40
20
Average Power
Peak Pulse Power
8/20 µs
1
2
3
4
% of Rated Power
0
0
25
50
75
100
125
150
T
L
– Lead Temperature (°C)
Device Pinout
Pin
1
2
3
4
5
6
7
8
Function
I/O 1
+V
REF
+V
REF
I/O 2
GND
I/O 3
I/O 4
GND
Specifications are subject to change without notice.
Customers should verify actual device performance in their specific applications.
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