*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.
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.
C 28
0 1L
500 V Surge
n
RoHS compliant*
CDSOT23-T24CAN CANbus Protector
1
3
2
Value
24
8
6
30
-40 to +150
-55 to +150
Unit
V
A
A
kV
˚C
˚C
Asia-Pacific:
Tel: +886-2 2562-4117 • Email: asiacus@bourns.com
EMEA:
Tel: +36 88 520 390 • Email: eurocus@bourns.com
The Americas:
Tel: +1-951 781-5500 • Email: americus@bourns.com
www.bourns.com
CDSOT23-T24CAN CANbus Protector
3312 - 2 mm SMD Trimming Potentiometer
Rating & Characteristic Curves
8/20 µs Pulse Waveform
120
I
PP
– Peak Pulse Current (% of I
PP
)
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
IPP - Peak Pulse Current (A)
e
t
Clamping Voltage vs. Peak Pulse Current
10
8/20 µs
Waveform
8
6
4
2
0
5
10
15
t – Time (µs)
20
25
30
0
25
30
35
VC - Clamping Voltage (V)
40
45
Leakage Current vs. Temperature
10
Breakdown Voltage vs. Temperature
32
31
1
VD = 24 V
VBR - Typical Breakdown Voltage (V)
30
60
Temperature (°C)
90
120
150
ID - Typical Leakage Current (nA)
30
29
28
27
26
-60
0.1
0.01
-60
-30
0
-30
0
30
60
Temperature (°C)
90
120
150
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.
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.
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 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 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.
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.
CDSOT23-T24CAN CANbus Protector
Layout Considerations
The figure below shows an example of how the Model CDSOT23-T24CAN 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.
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.
3312 - 2 mm SMD Trimming Potentiometer
CDSOT23-T24CAN CANbus Protector
Product Dimensions
A
B
DIMENSIONS =
MILLIMETERS
(INCHES)
Recommended Footprint
A
B
3
C
1
2
D
SEE
DETAIL
A
C
F
E
GAUGE
PLANE
DETAIL
A
L
E
G
H
D
SEATING PLANE
I
J
0 ° TO 8 °
K
Dimensions
A
B
C
D
E
F
G
H
I
J
K
L
2.80 - 3.00
(0.110 - 0.118)
0.95
BSC
(0.037)...........
1.20 - 1.40
(0.047 - 0.055)
2.10 - 2.49
(0.083 - 0.098)
1.90
BSC
(0.075)...........
0.30 - 0.50
(0.012 - 0.019)
0.89 - 1.17
(0.035 - 0.046)
0.05 - 0.15
(0.002 - 0.006)
0.25
BSC
(0.010)...........
0.46 - 0.64
(0.018 - 0.025)
0.40 - 0.58
(0.016 - 0.023)
0.08 - 0.20
(0.003 - 0.008)
DIMENSIONS =
MILLIMETERS
(INCHES)
Dimensions
A
B
C
D
E
0.95
(0.037)
0.95
(0.037)
2.00
(0.079)
0.85
(0.033)
0.85
(0.033)
How to Order
CD SOT23 - T 24 CAN
Common Code
Chip Diode
Package
SOT23 = SOT-23-3L Package
Model
T = Transient Voltage Suppressor
Working Reverse Voltage
24 = 24 V
Suffix
CAN = CANbus Protector
Specifications are subject to change without notice.
Customers should verify actual device performance in their specific applications.
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.
stm32/stm8
京公网安备 11010802033920号
Copyright © 2005-2026 EEWORLD.com.cn, Inc. All rights reserved
电子工程世界
