CDSOT23-T24CAN Datasheet by Bourns Inc.

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Features
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*
Absolute Maximum Ratings (@ TA = 25 °C Unless Otherwise Noted)
CDSOT23-T24CAN CANbus Protector
*RoHS COMPLIANT
DeviceNet™ is a trademark of ODVA.
General Information
The Model CDSOT23-T24CAN device is designed to provide ESD and surge protection
for CAN transceivers, meeting IEC 61000-4-2 (ESD) and IEC 61000-4-5 (Surge) require-
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 minimizes impact on signal integrity
and is compatible with high-speed CAN.
The SOT-23 packaged device conforms to JEDEC standards and 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.
ments. The dual TVS array protects both data lines, offers a Working Reverse Voltage
Rating Symbol Value Unit
VDRM 24 V
Non-Repetitive Peak Impulse Current, 8/20 μs Waveform IPPSM 8A
Non-Repetitive Peak Impulse Current, 1.2/50 μs Waveform IPPSM 6A
ESD (IEC 61000-4-2 Contact) 30 kV
Junction Temperature TJ-40 to +150 ˚C
Storage Temperature
Repetitive Peak Off-state Voltage
Tstg -55 to +150 ˚C
3
1
2
Electrical Characteristics (@ TA = 25 °C Unless Otherwise Noted)
Parameter Test Condition Min. Typ. Max. Unit
IDLeakage Current VD = VDRM 100 nA
VBR Breakdown Voltage IBR = 1 mA 26.2 32 V
VCClamping Voltage I = 5 A 8/20 μs waveform 36 V
VCClamping voltage I = 8 A 8/20 μs waveform 40 V
C Capacitance VD = 0 V, f = 1 MHz
Vosc = 1 Vrms
Line to GND (Pin 1-3 or Pin 2-3) 22 30
pF
Line to Line (Pin 1-2) 11
C2801L
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.
WARNING Cancer and Reproductive Harm - www.P65Warnings.ca.gov
*RoHS Directive 2015/863, Mar 31, 2015 and Annex.
Applications
High-speed CANbus
Industrial control networks
Smart Distribution Systems (SDS)
DeviceNet™
Factory and process automation systems
Lift control systems
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CDSOT23-T24CAN CANbus Protector
Rating & Characteristic Curves
8/20 μs Pulse Waveform Clamping Voltage vs. Peak Pulse Current
Leakage Current vs. Temperature Breakdown Voltage vs. Temperature
20
40
60
80
100
120
0
30025201510
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
3025 35 40 45
IPP - Peak Pulse Current (A)
VC - Clamping Voltage (V)
8
10
6
4
2
8/20 µs
Waveform
26
0
-30-60 6030 12090 150
VBR - Typical Breakdown Voltage (V)
Temperature (°C)
31
32
30
29
27
28
0.01
0
-30-60 6030 12090 150
ID - Typical Leakage Current (nA)
Temperature (°C)
0.1
10
1VD = 24 V
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.
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CDSOT23-T24CAN CANbus Protector
Application Information
The Model CDSOT23-T24CAN 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 is designed with a minimum breakdown voltage of 26.2 V so that it will not conduct during a 24 VDC
power cross event.
by the CDSOT23-T24CAN device. The 1.2/50 s voltage, 8/20 s 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.
The surge test setup below shows the differential input/output (I/O) of a typical transceiver, its termination network, being protected
CANbus
Transceiver
CD
CD
Figure 1 -
CDSOT23-T24CAN Clamp Voltages for a +500 V Surge Figure 2 -
CDSOT23-T24CAN 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.
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CDSOT23-T24CAN CANbus Protector
Layout Considerations
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.
The figure below shows an example of how the Model CDSOT23-T24CAN can be connected on a two-sided PCB design. The device
Typical Part Marking Environmental Specifications
Moisture Sensitivity Level
ESD Classification (HBM)................................................................1
............................................................. 3B
C2YWWL
2-DIGIT PRODUCT CODE
MANUFACTURING
DATE CODE:
Y = YEAR
WW = WEEK
L = LOT CODE
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.
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Product Dimensions
CDSOT23-T24CAN CANbus Protector
How to Order
NAC42T-32TOSDC
Common Code
Chip Diode
Package
SOT23 = SOT-23-3L Package
Model
T = Transient Voltage Suppressor
Working Reverse Voltage
Suffix
24 = 24 V
CAN = CANbus Protector
Recommended Footprint
Dimensions
A0.95
(0.037)
B0.95
(0.037)
C2.00
(0.079)
D0.85
(0.033)
E0.85
(0.033)
A B
C
E
D
MILLIMETERS
(INCHES)
DIMENSIONS =
12
3
B
CD
HL
0 ° TO 8 °
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PLANE
K
J
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SEE
DETAIL
A
DETAIL
A
G
E
F
A
MILLIMETERS
(INCHES)
DIMENSIONS =
Dimensions
A2.80 - 3.00
(0.110 - 0.118)
B0.95 BSC
(0.037)
C1.20 - 1.40
(0.047 - 0.055)
D2.10 - 2.49
(0.083 - 0.098)
E1.90 BSC
(0.075)
F0.30 - 0.50
(0.012 - 0.019)
G0.89 - 1.17
(0.035 - 0.046)
H0.05 - 0.15
(0.002 - 0.006)
I0.25 BSC
(0.010)
J0.46 - 0.64
(0.018 - 0.025)
K0.40 - 0.58
(0.016 - 0.023)
L0.08 - 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.
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CDSOT23-T24CAN CANbus Protector
Packaging Information
The product is dispensed in tape and reel format (see diagram below).
Devices are packed in accordance with EIA standard
RS-481-A.
DIMENSIONS: MM
(INCHES)
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 ...
(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 ± 0.05
(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 .
(0.567) Max.
Quantity per Reel -- 3,000
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.
Tel: +886-2 2562-4117
Email: asiacus@bourns.com
Europe:
Asia-Pacific:
Tel: +36 88 885 877
Email: eurocus@bourns.com
The Americas:
Tel: +1-951 781-5500
Email: americus@bourns.com
www.bourns.com
BOURNS'
Legal Disclaimer Notice
This legal disclaimer applies to purchasers and users of Bourns® products manufactured by or on behalf of Bourns, Inc. and
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Unless otherwise expressly indicated in writing, Bourns® products and data sheets relating thereto are subject to change
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and complete before placing orders for Bourns® products.
The characteristics and parameters of a Bourns® product set forth in its data sheet are based on laboratory conditions, and
statements regarding the suitability of products for certain types of applications are based on Bourns’ knowledge of typical
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the user’s sole risk.
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also apply to such Bourns® custom products.
Users shall not sell, transfer, export or re-export any Bourns®WYVK\J[ZVY[LJOUVSVN`MVY\ZLPUHJ[P]P[PLZ^OPJOPU]VS]L[OL
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bilingual versions are available at:
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