T
Features
PL
IA
N
Single device for two I/O lines
Low capacitance for high-speed CANbus
IEC 61000-4-2 30 kV ESD
IEC 61000-4-5 (Level 1, CWG 1.2/50)
500 V Surge
■ RoHS compliant*
■ AEC-Q101 compliant**
*R
oH
S
&
AE
C
CO
M
■
■
■
■
Applications
■ High-speed CANbus
■
■
■
■
Industrial control networks
Smart Distribution Systems (SDS)
DeviceNet™
Factory and process automation systems
CDSOT23-T24CAN-Q CANbus Protector
General Information
The Model CDSOT23-T24CAN-Q device is designed to provide ESD and surge
protection for CAN transceivers, meeting IEC 61000-4-2 (ESD) and IEC 61000-4-5
(Surge) requirements. The dual TVS array protects both data lines, offers a Working
Reverse Voltage of 24 V and a Minimum Breakdown Voltage of 26.2 V and can be used
with transceivers with internal circuitry for 24 V power supply miswiring. The low capacitance and low leakage current of the Model CDSOT23-T24CAN-Q minimizes impact
on signal integrity and is compatible with high-speed CAN.
1
3
2
The SOT-23 packaged device will mount directly onto the industry standard SOT-23
footprint. Its compact size eases layout on compact PCB designs while ensuring
compliance with stringent EMI requirements.
Absolute Maximum Ratings (@ TA = 25 °C Unless Otherwise Noted)
Rating
Symbol
Value
Unit
Repetitive Peak Off-state Voltage
VDRM
24
V
Non-Repetitive Peak Impulse Current, 8/20 μs Waveform
IPPSM
8
A
Non-Repetitive Peak Impulse Current, 1.2/50 μs Waveform
IPPSM
6
A
30
kV
ESD (IEC 61000-4-2 Contact)
Junction Temperature
TJ
-40 to +150
°C
Storage Temperature
Tstg
-55 to +150
°C
Electrical Characteristics (@ TA = 25 °C Unless Otherwise Noted)
Parameter
Test Condition
Leakage Current
VD = VDRM
Breakdown Voltage
IBR = 1 mA
VC
Clamping Voltage
I = 5 A 8/20 μs waveform
36
V
VC
Clamping voltage
I = 8 A 8/20 μs waveform
40
V
Capacitance
VD = 0 V, f = 1 MHz
Vosc = 1 Vrms
ID
VBR
C
Min.
Typ.
26.2
Line to GND (Pin 1-3 or Pin 2-3)
22
Line to Line (Pin 1-2)
11
Max.
Unit
100
nA
32
V
30
pF
WARNING Cancer and Reproductive Harm
www.P65Warnings.ca.gov
DeviceNet™ is a trademark of ODVA.
*RoHS Directive 2015/863, Mar 31, 2015 and Annex.
**”Q” part number suffix indicates AEC-Q101 compliance.
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.
CDSOT23-T24CAN-Q CANbus Protector
Rating & Characteristic Curves
8/20 μs Pulse Waveform
Clamping Voltage vs. Peak Pulse Current
100
10
Test Waveform Parameters
tt = 8 µs
td = 20 µs
tt
80
et
60
40
td = t|IPP/2
20
0
0
10
5
15
20
25
8/20 µs
Waveform
8
IPP - Peak Pulse Current (A)
IPP – Peak Pulse Current (% of IPP)
120
6
4
2
30
t – Time (µs)
0
25
Leakage Current vs. Temperature
30
35
VC - Clamping Voltage (V)
40
45
Breakdown Voltage vs. Temperature
10
32
VBR - Typical Breakdown Voltage (V)
ID - Typical Leakage Current (nA)
31
VD = 24 V
1
0.1
0.01
-60
-30
0
30
60
Temperature (°C)
90
120
150
30
29
28
27
26
-60
-30
0
30
60
Temperature (°C)
90
120
150
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.
CDSOT23-T24CAN-Q CANbus Protector
Application Information
The Model CDSOT23-T24CAN-Q dual TVS diode array is designed to protect a CANbus transceiver against surge events per
IEC 61000-4-5 (Level 1), and also increase the resistibility against ESD events beyond IEC 61000-4-2 to as high as 30 kV. It is
intended to be used with a transceiver that has internal protection against other faults such as 24 V power supply miswiring. The
Model CDSOT23-T24CAN-Q is designed with a minimum breakdown voltage of 26.2 V so that it will not conduct during a 24 VDC
power cross event.
The surge test setup below shows the differential input/output (I/O) of a typical transceiver, its termination network, being protected
by the CDSOT23-T24CAN-Q device. The 1.2/50 μs voltage, 8/20 μs current combination wave generator is connected to the circuit
through two 80 ohm resistors and a coupling device (CD). This circuit was subjected to a 500 V (1.2/50) longitudinal surge
(common mode) in both positive and negative polarities per IEC 61000-4-5 (Level 1). The oscilloscope traces in Figures 1 and 2
show the clamp voltage with respect to ground for the CAN H and CAN L signal lines, as well as the total surge current output from
the surge generator into the circuit, for each of these surges. The peak current on each line is ~ 5.5 A (11 A total/2 lines) when
subjected to the 500 V (1.2/50) surge. The TVS diode clamps the voltage at the I/O of the transceiver within 37 V during the surge.
CD
CD
CANbus
Transceiver
Figure 1 CDSOT23-T24CAN-Q Clamp Voltages for a +500 V Surge
-Q
Figure 2 CDSOT23-T24CAN-Q Clamp Voltages for a -500 V Surge
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.
CDSOT23-T24CAN-Q CANbus Protector
Layout Considerations
The figure below shows an example of how the Model CDSOT23-T24CAN-Q can be connected on a two-sided PCB design. The
device should be placed as close to the bus connector as possible with short traces to the signal lines. Since the connector pin
spacing is generally much larger than the pin spacing of the transceiver, it is relatively easy to do this. A standard 10 mil, 1 ounce
copper trace is more than adequate to handle the peak current level from the 500 V surge discussed in the previous section. The
ground pin of the device should be connected to the circuit board ground plane using a short trace and a via. If there is a ground
plane on the signal side of the circuit board near where the diode array is placed, it should be connected directly to it.
CDSOT23-T24CAN-Q
Typical Part Marking
How to Order
CD SOT23 - T 24 CAN - Q
MANUFACTURING DATE CODE:
• 1ST DIGIT INDICATES THE YEAR.
• 2ND & 3RD DIGITS INDICATE THE WEEK NUMBER.
• 4TH DIGIT INDICATES THE LOT CODE.
Common Code
Chip Diode
Package
SOT23 = SOT-23-3L Package
2-DIGIT PRODUCT CODE:
C2 = CDSOT23-T24CAN-Q
XX Y WW L
(UNDERSCORE DENOTES
AEC-Q101 COMPLIANCY)
Model
T = Transient Voltage Suppressor
Working Reverse Voltage
24 = 24 V
Suffix
CAN = CANbus Protector
AEC-Q101 Suffix
Q = AEC-Q101 Compliant
Environmental Specifications
Moisture Sensitivity Level ................................................................1
ESD Classification (HBM)............................................................. 3B
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.
CDSOT23-T24CAN-Q CANbus Protector
Product Dimensions
Recommended Footprint
A
A
3
C
1
B
DIMENSIONS = MILLIMETERS
(INCHES)
B
SEE
DETAIL
D
A
2
C
E
F
DETAIL
A
GAUGE
PLANE
E
L
H
G
D
SEATING PLANE
I
0 ° TO 8 °
DIMENSIONS = MILLIMETERS
(INCHES)
J
K
Dimensions
Dimensions
A
2.74 - 3.00
(0.108 - 0.118)
A
B
0.95
(0.037) BSC
0.95
(0.037)
B
C
1.20 - 1.40
(0.047 - 0.055)
0.95
(0.037)
C
D
2.10 - 2.49
(0.083 - 0.098)
2.00
(0.079)
E
1.90
(0.075) BSC
D
0.85
(0.033)
F
0.30 - 0.50
(0.012 - 0.019)
E
0.85
(0.033)
G
0.89 - 1.17
(0.035 - 0.046)
H
0.05 - 0.15
(0.002 - 0.006)
I
0.25
(0.010) BSC
J
0.46 - 0.64
(0.018 - 0.025)
K
0.40 - 0.58
(0.016 - 0.023)
L
0.08 - 0.20
(0.003 - 0.008)
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.
CDSOT23-T24CAN-Q CANbus Protector
Packaging Information
The product is dispensed in tape and reel format (see diagram below).
P
0
P
1
d
T
E
Index Hole
120 ϒ
F
D2
W
B
D1 D
P
A
C
Trailer
Device
Leader
....... .......
....... .......
.......
....... ....... .......
End
W1
Start
DIMENSIONS:
10 pitches (min.)
10 pitches (min.)
Direction of Feed
Item
Symbol
SOT-23
Carrier Width
A
2.25 ±0.10
(0.088 - 0.004)
Carrier Length
B
2.34 ±0.10
(0.092 - 0.004)
Carrier Depth
C
1.22 ±0.10
(0.048 - 0.004)
Sprocket Hole
d
1.55 ±0.05
(0.061 - 0.002)
Reel Outside Diameter
D
178
(7.008)
Reel Inner Diameter
D1
...
50.0
Min.
(1.969)
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 ± 0.05
(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)
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
W1
14.4
.
Max.
(0.567)
--
3,000
Quantity per Reel
MM
(INCHES)
Devices are packed in accordance with EIA standard
RS-481-A.
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. 08/19
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
P[ZHɉSPH[LZJVSSLJ[P]LS`¸)V\YUZ¹
Unless otherwise expressly indicated in writing, Bourns® products and data sheets relating thereto are subject to change
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