© 2015 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 05/27/15
TVS Diode Arrays (SPA
® Diodes)
General Purpose ESD Protection - SM24CANB
Description
Applications
The SM24CANB TVS Diode Array is designed to protect
automotive Controller Area Network (CAN) lines from
damage due to electrostatic discharge (ESD), electrical fast
transient (EFT), and other overvoltage transients.
The SM24CANB Series can absorb repetitive ESD strikes
above the maximum level specified in the IEC61000-4-2
international standard without performance degradation
and safely dissipate 10A of 8/20s surge current (IEC61000-
4-5) with very low clamping voltages.
Features
• ESD, IEC61000-4-2,
±30kV contact, ±30kV air
• EFT, IEC61000-4-4,40A
(5/50ns)
• Lightning, IEC61000-4-5,
10A (tp=8/20μs)
• Low clamping voltage
• Low leakage current
• AEC-Q101 qualified
• CAN Bus Protection
• Automotive Networks
• On-Board Diagnostics
• Sensors, Actuators
• EnergyBus
• Industrial Control
Networks
• Device Net
• Safety BUS
• CAN open
Pinout and Functional Block Diagram
Life Support Note:
Not Intended for Use in Life Support or Life Saving Applications
The products shown herein are not designed for use in life sustaining or life saving
applications unless otherwise expressly indicated.
RoHS
Pb
GREEN
SM24CANB Series 500W TVS Diode Array
Pin 1Pin 2
Pin 3
Functional Block Diagram
12
3
Application Example
SPLIT
CAN
BUS
SM24CANB-02HTG (500W)
CANL
CAN BUS
Transceiver
Common
Mode Choke
(optional)
CANH
C G
R T/2
R T/2
© 2015 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 05/27/15
TVS Diode Arrays (SPA
® Diodes)
General Purpose ESD Protection - SM24CANB
Notes:
CAUTION: Stresses above those listed in “Absolute Maximum Ratings” may cause permanent damage to the device. This is a stress only rating and operation of
the device at these or any other conditions above those indicated in the operational sections of this specification is not implied.
Absolute Maximum Ratings
Symbol Parameter Value Units
PPk Peak Pulse Power (tp=8/20μs) 500 W
IPP Peak Pulse Current (tp=8/20μs) 10.0 A
TOP Operating Temperature -40 to 125 °C
TSTOR Storage Temperature -55 to 150 °C
Electrical Characteristics (TOP=25ºC)
Parameter Symbol Test Conditions Min Typ Max Units
Reverse Standoff Voltage VRWM IR≤1μA, Pin1 or Pin2 to Pin3 24.0 V
Reverse Breakdown Voltage VBR IT=1mA, Pin1 or Pin2 to Pin3 26.7 V
Leakage Current ILEAK VR=24V, Pin1 or Pin2 to Pin3 0.1 μA
Clamp Voltage1VC
IPP=1A, tp=8/20µs, Pin 1 or Pin 2 to Pin 3 34.0 V
IPP=8A, tp=8/20µs, Pin 1 or Pin 2 to Pin 3 46.0 V
IPP=10A, tp=8/20µs, Pin 1 or Pin 2 to Pin 3 50 V
Dynamic Resistance2RDYN TLP, tP=100ns, Pin 1 or Pin2 to Pin3 0.6 Ω
ESD Withstand Voltage1VESD
IEC61000-4-2 (Contact Discharge) ±30 kV
IEC61000-4-2 (Air Discharge) ±30 kV
Diode Capacitance1CI/O-GND
Reverse Bias=0V, f=1MHz;
Pin 1 or Pin2 to Pin 3 30 pF
Thermal Information
Parameter Rating Units
Storage Temperature Range -55 to 150 °C
Maximum Junction Temperature 150 °C
Maximum Lead Temperature (Soldering 20-40s) 260 °C
Pulse Waveform
0%
10%
20%
30%
40%
50%
60%
70%
80%
90%
100%
110%
0.0 5.0 10.0 15.0 20.0 25.0 30.0
Time (μs)
Percent of I
PP
Note:
1 Parameter is guaranteed by design and/or device characterization.
2 Transmission Line Pulse (TLP) test setting : Std.TDR(50Ω),tp=100ns, tr=0.2ns ITLP and VTLP averaging window: star t1=70ns to end t2=80ns
0.0
10.0
20.0
30.0
40.0
50.0
024681012141618202224
Capacitance (pF)
Bias Voltage (V)
Capacitance vs. Reverse Bias
(Pin1 or Pin2 to Pin3)
© 2015 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 05/27/15
TVS Diode Arrays (SPA
® Diodes)
General Purpose ESD Protection - SM24CANB
Time
Temperature
TP
TL
TS(max)
TS(min)
25
tP
tL
tS
time to peak temperature
Preheat
P
rehea
t
Ramp-up
R
amp-up
Ramp-down
R
amp-d
o
Critical Zone
TL to TP
C
ritical Zon
e
T
L
to
T
P
Reflow Condition Pb – Free assembly
Pre Heat
- Temperature Min (Ts(min)) 150°C
- Temperature Max (Ts(max)) 200°C
- Time (min to max) (ts) 60 – 180 secs
Average ramp up rate (Liquidus) Temp (TL)
to peak 3°C/second max
TS(max) to TL - Ramp-up Rate 3°C/second max
Reflow - Temperature (TL) (Liquidus) 217°C
- Temperature (tL) 60 – 150 seconds
Peak Temperature (TP) 260+0/-5 °C
Time within 5°C of actual peak
Temperature (tp)20 – 40 seconds
Ramp-down Rate 6°C/second max
Time 25°C to peak Temperature (TP) 8 minutes Max.
Do not exceed 260°C
Soldering Parameters
Product Characteristics
Lead Plating Matte Tin
Lead Material Copper Alloy
Lead Coplanarity 0.0004 inches (0.102mm)
Substrate material Silicon
Body Material Molded Epoxy
Flammability UL 94 V-0
Notes :
1. All dimensions are in millimeters
2. Dimensions include solder plating.
3. Dimensions are exclusive of mold flash & metal burr.
4. Blo is facing up for mold and facing down for trim/form, i.e. reverse trim/form.
5. Package surface matte finish VDI 11-13.
0
10
20
30
40
50
60
1.03.0 5.07.0 9.011.0
Clamp Voltage (V C)
Peak Pulse Current-IPP (A)
Clamping Voltage vs. Peak Pulse Current
(Pin1 or Pin2 to Pin3)
60
0
2
4
6
8
10
12
14
16
18
20
01020304050
TLP Current (A)
TLP Volts (V)
Transmission Line Pulsing (TLP) Plot
(Pin1or Pin2 to Pin3)
© 2015 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 05/27/15
TVS Diode Arrays (SPA
® Diodes)
General Purpose ESD Protection - SM24CANB
Part Numbering SystemPart Marking System
SM 02 TG
Series
Number of
Channels
Package
T= Tape & Reel
G= Green
–
TVS Diode Arrays
(SPA® Diodes)
H: SOT23-3
H
24 CAN
Working
Voltage
CAN BUS
B
Wattage
B: 500W
M24CB
12
3
P
e
e1
E
3
12
E1
b
A1
A
D
C
L1
0
N
M
502B
Package SOT23-3
Pins 3
JEDEC TO-236
Millimeters Inches
Min Max Min Max
A0.89 1. 12 0.035 0.044
A1 0.01 0.10 0.0004 0.004
b0.30 0.50 0.012 0.020
c0.08 0.2 0.003 0.008
D2.80 3.04 0.110 0.120
E2.10 2.64 0.083 0.104
E1 1.20 1.40 0.047 0.055
e0.95 BSC 0.038 BSC
e1 1.90 BSC 0.075 BSC
L1 0.54 REF 0.021 REF
M2.29 0.090
N0.95 0.038
O0.78 0.030TYP
P0.78 0.030TYP
Package Dimensions — SOT23-3
Recommended Pad Layout
P
e
e1
E
3
12
E1
b
A1
A
D
C
L1
0
N
M
502B
Part Number Package Marking Min. Order Qty. Packaging Option P/P0 Packaging Specification
SM24CANB-02HTG SOT23-3 M24CB 3000 Tape & Reel – 8mm tape/7” reel 4mm/4mm EIA RS-481
© 2015 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 05/27/15
TVS Diode Arrays (SPA
® Diodes)
General Purpose ESD Protection - SM24CANB
GENERAL INFORMATION
1. 3000 PIECES PER REEL.
2. ORDER IN MULTIPLES OF FULL REELS ONLY.
3. MEETS EIA-481 REVISION "A" SPECIFICATIONS.
COVER TAPE
USER DIRECTION OF FEED PIN 1
SOT23-3 (8mm POCKET PITCH)
8.4mm
180mm
14.4mm
13mm
60mm
ACCESS HOLE
8mm TAPE AND REEL
Embossed Carrier Tape & Reel Specification — SOT23-3
Symbol Millimetres Inches
Min Max Min Max
E1.65 1.85 0.065 0.073
F3.40 3.60 0.134 0.142
P2 1.90 2.10 0.075 0.083
D1.40 1.60 0.055 0.063
P0 3.90 4.10 0.154 0.161
W7.70 8.30 0.303 0.327
P3.90 4.10 0.154 0.161
A0 3.05 3.25 0.120 0.128
B0 2.67 2.87 0.105 0.113
K0 1. 12 1.32 0.044 0.052
t0.22 0.24 0.009 0.009
