Semiconductor Components Industries, LLC, 2012
January, 2012 Rev. 5
1Publication Order Number:
NUP2105L/D
NUP2105L, SZNUP2105L
Dual Line CAN
Bus Protector
The SZ/NUP2105L has been designed to protect the CAN
transceiver in highspeed and fault tolerant networks from ESD and
other harmful transient voltage events. This device provides
bidirectional protection for each data line with a single compact
SOT23 package, giving the system designer a low cost option for
improving system reliability and meeting stringent EMI requirements.
Features
350 W Peak Power Dissipation per Line (8 x 20 msec Waveform)
Low Reverse Leakage Current (< 100 nA)
Low Capacitance HighSpeed CAN Data Rates
IEC Compatibility: IEC 6100042 (ESD): Level 4
IEC 6100044 (EFT): 40 A – 5/50 ns
IEC 6100045 (Lighting) 8.0 A (8/20 ms)
ISO 76371, Nonrepetitive EMI Surge Pulse 2, 9.5 A
(1 x 50 ms)
ISO 76373, Repetitive Electrical Fast Transient (EFT)
EMI Surge Pulses, 50 A (5 x 50 ns)
Flammability Rating UL 94 V0
AECQ101 Qualified and PPAP Capable
SZ Prefix for Automotive and Other Applications Requiring Unique
Site and Control Change Requirements
PbFree Packages are Available*
Applications
Industrial Control Networks
Smart Distribution Systems (SDS)
DeviceNet
Automotive Networks
Low and HighSpeed CAN
Fault Tolerant CAN
*For additional information on our PbFree strategy and soldering details, please
download the ON Semiconductor Soldering and Mounting Techniques
Reference Manual, SOLDERRM/D.
http://onsemi.com
SOT23
CASE 318
STYLE 27
PIN 1
PIN 3
PIN 2
MARKING DIAGRAM
27E = Device Code
M = Date Code
G= PbFree Package
SOT23
DUAL BIDIRECTIONAL
VOLTAGE SUPPRESSOR
350 W PEAK POWER
1
27EMG
G
CAN
Transceiver
CAN_H
CAN_L
NUP2105L
CAN Bus
See detailed ordering and shipping information in the package
dimensions section on page 2 of this data sheet.
ORDERING INFORMATION
(Note: Microdot may be in either location)
NUP2105L, SZNUP2105L
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2
MAXIMUM RATINGS (TJ = 25C, unless otherwise specified)
Symbol Rating Value Unit
PPK Peak Power Dissipation
8 x 20 ms Double Exponential Waveform (Note 1) 350
W
TJOperating Junction Temperature Range 55 to 150 C
TJStorage Temperature Range 55 to 150 C
TLLead Solder Temperature (10 s) 260 C
ESD Human Body model (HBM)
Machine Model (MM)
IEC 6100042 Specification (Contact)
16
400
30
kV
V
kV
Maximum ratings are those values beyond which device damage can occur. Maximum ratings applied to the device are individual stress limit
values (not normal operating conditions) and are not valid simultaneously. If these limits are exceeded, device functional operation is not implied,
damage may occur and reliability may be affected.
1. Nonrepetitive current pulse per Figure 1.
ELECTRICAL CHARACTERISTICS (TJ = 25C, unless otherwise specified)
Symbol Parameter Test Conditions Min Typ Max Unit
VRWM Reverse Working Voltage (Note 2) 24 V
VBR Breakdown Voltage IT = 1 mA (Note 3) 26.2 32 V
IRReverse Leakage Current VRWM = 24 V 15 100 nA
VCClamping Voltage IPP = 5 A (8 x 20 ms Waveform)
(Note 4)
40 V
VCClamping Voltage IPP = 8 A (8 x 20 ms Waveform)
(Note 4)
44 V
IPP Maximum Peak Pulse Current 8 x 20 ms Waveform (Note 4) 8.0 A
CJ Capacitance VR = 0 V, f = 1 MHz (Line to GND) 30 pF
2. TVS devices are normally selected according to the working peak reverse voltage (VRWM), which should be equal or greater than the DC
or continuous peak operating voltage level.
3. VBR is measured at pulse test current IT
.
4. Pulse waveform per Figure 1.
ORDERING INFORMATION
Device Package Shipping
NUP2105LT1 SOT23 3,000 / Tape & Reel
NUP2105LT1G SOT23
(PbFree)
3,000 / Tape & Reel
SZNUP2105LT1G SOT23
(PbFree)
3,000 / Tape & Reel
NUP2105LT3 SOT23 10,000 / Tape & Reel
NUP2105LT3G SOT23
(PbFree)
10,000 / Tape & Reel
SZNUP2105LT3G SOT23
(PbFree)
10,000 / Tape & Reel
For information on tape and reel specifications, including part orientation and tape sizes, please refer to our Tape and Reel Packaging
Specifications Brochure, BRD8011/D.
NUP2105L, SZNUP2105L
http://onsemi.com
3
TYPICAL PERFORMANCE CURVES
(TJ = 25C unless otherwise noted)
Figure 1. Pulse Waveform, 8 20 ms
110
90
80
70
60
50
40
30
20
10
00 5 15 25
t, TIME (ms)
% OF PEAK PULSE CURRENT
WAVEFORM
PARAMETERS
tr = 8 ms
td = 20 ms
td = IPP/2
30
Figure 2. Clamping Voltage vs Peak Pulse Current
12.0
10.0
8.0
6.0
4.0
2.0
0.025 40
VC, CLAMPING VOLTAGE (V)
IPP
, PEAK PULSE CURRENT (A)
30 35 45 50
100
10 20
ct
Figure 3. Typical Junction Capacitance vs
Reverse Voltage
25
02
VR, REVERSE VOLTAGE (V)
C, CAPACITANCE (pF)
46810
125C
20
15
35
10
30
25C
40C
PULSE WAVEFORM
8 x 20 ms per Figure 1
f = 1.0 MHz, Line to Ground
0
5
10
15
20
25
30
35
40
45
50
20 22 24 26 28 30 32 34
Figure 4. VBR versus IT Characteristics
55C
TA = +150C
25C
65C
VBR, VOLTAGE (V)
IT
, (mA)
Figure 5. IR versus Temperature Characteristics
0
5
10
15
20
25
024681012
55C
TA = +150C
+25C
+65C
IL, LEAKAGE CURRENT (nA)
VR, REVERSE BIAS VOLTAGE (V)
0
20
40
60
80
100
120
60 30 0 30 60 90 120 150 180
Figure 6. Temperature Power Dissipation Derating
TEMPERATURE (C)
PERCENT DERATING (%)
NUP2105L, SZNUP2105L
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4
APPLICATIONS
Background
The Controller Area Network (CAN) is a serial
communication protocol designed for providing reliable
high speed data transmission in harsh environments. TVS
diodes provide a low cost solution to conducted and radiated
Electromagnetic Interference (EMI) and Electrostatic
Discharge (ESD) noise problems. The noise immunity level
and reliability of CAN transceivers can be easily increased
by adding external TVS diodes to prevent transient voltage
failures.
The NUP2105L provides a transient voltage suppression
solution for CAN data communication lines. The
NUP2105L is a dual bidirectional TVS device in a compact
SOT23 package. This device is based on Zener technology
that optimizes the active area of a PN junction to provide
robust protection against transient EMI surge voltage and
ESD. The NUP2105L has been tested to EMI and ESD
levels that exceed the specifications of popular high speed
CAN networks.
CAN Physical Layer Requirements
Table 1 provides a summary of the system requirements
for a CAN transceiver. The ISO 118982 physical layer
specification forms the baseline for most CAN systems. The
transceiver requirements for the Honeywell Smart
Distribution Systems (SDS) and Rockwell
(AllenBradley) DeviceNet high speed CAN networks
are similar to ISO 118982. The SDS and DeviceNet
transceiver requirements are similar to ISO 118982;
however, they include minor modifications required in an
industrial environment.
Table 1. Transceiver Requirements for HighSpeed CAN Networks
Parameter ISO 118982SDS Physical Layer
Specification 2.0
DeviceNet
Min / Max Bus Voltage
(12 V System)
3.0 V / 16 V 11 V / 25 V Same as ISO 118982
Common Mode Bus Voltage CAN_L:
2.0 V (min)
2.5 V (nom)
CAN_H:
2.5 V (nom)
7.0 V (max)
Same as ISO 118982Same as ISO 118982
Transmission Speed 1.0 Mb/s @ 40 m
125 kb/s @ 500 m
Same as ISO 118982500 kb/s @ 100 m
125 kb/s @ 500 m
ESD Not specified, recommended
w $8.0 kV (contact)
Not specified, recommended
w $8.0 kV (contact)
Not specified, recommended
w $8.0 kV (contact)
EMI Immunity ISO 76373, pulses ‘a’ and ‘b’ IEC 6100044 EFT Same as ISO 118982
Popular Applications Automotive, Truck, Medical
and Marine Systems
Industrial Control Systems Industrial Control Systems
NUP2105L, SZNUP2105L
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5
EMI Specifications
The EMI protection level provided by the TVS device can
be measured using the International Organization for
Standardization (ISO) 76371 and 3 specifications that are
representative of various noise sources. The ISO 76371
specification is used to define the susceptibility to coupled
transient noise on a 12 V power supply, while ISO 76373
defines the noise immunity tests for data lines. The ISO 7637
tests also verify the robustness and reliability of a design by
applying the surge voltage for extended durations.
The IEC 610004X specifications can also be used to
quantify the EMI immunity level of a CAN system. The IEC
610004 and ISO 7637 tests are similar; however, the IEC
standard was created as a generic test for any electronic
system, while the ISO 7637 standard was designed for
vehicular applications. The IEC6100044 Electrical Fast
Transient (EFT) specification is similar to the ISO 76371
pulse 1 and 2 tests and is a requirement of SDS CAN
systems. The IEC 6100045 test is used to define the power
absorption capacity of a TVS device and long duration
voltage transients such as lightning. Table 2 provides a
summary of the ISO 7637 and IEC 610004X test
specifications. Table 3 provides the NUP2105Ls ESD
test results.
Table 2. ISO 7637 and IEC 610004X Test Specifications
Test Waveform Test Specifications NUP2105L Test Simulated Noise Source
ISO 76371
12 V Power Supply Lines
Pulse 1
Vs = 0 to 100 V
Imax = 10 A
tduration = 5000 pulses
Imax = 1.75 A
Vclamp_max = 31 V
tduration = 5000 pulses
Ri = 10 W, tr = 1.0 ms,
td_10% = 2000 ms, t1 = 2.5 s,
t2 = 200 ms, t3 = 100 ms
DUT in parallel with
inductive load that is
disconnected from power
supply.
Pulse 2
Vs = 0 to +100 V
Imax = 10 A
tduration = 5000 pulses
Imax = 9.5 A
Vclamp_max = 33 V
tduration = 5000 pulses
Ri = 10 W, tr = 1.0 ms,
td_10% = 50 ms, t1 = 2.5 s,
t2 = 200 ms
DUT in series with inductor
that is disconnected.
ISO 76373
Data Line EFT
Pulse ‘a’
Vs = 60 V
Imax = 1.2 A
tduration = 10 minutes
Imax = 50 A
Vclamp_max = 40 V
tduration = 60 minutes
Ri = 50 W, tr = 5.0 ns,
td_10% = 0.1 ms, t1 = 100 ms,
t2 = 10 ms, t3 = 90 ms
Switching noise of inductive
loads.
Pulse ‘b’
Vs = +40 V
Imax = 0.8 A
tduration = 10 minutes
IEC 6100044
Data Line EFT
Vopen circuit = 2.0 kV
Ishort circuit = 40 A
(Level 4 = Severe Industrial
Environment)
Ri = 50 W, tr < 5.0 ns,
td_50% = 50 ns, tburst = 15 ms,
fburst = 2.0 to 5.0 kHz,
trepeat = 300 ms
tduration = 1 minute
(Note 2) Switching noise of inductive
loads.
IEC 6100045
Vopen circuit = 1.2 x 50 ms,
Ishort circuit = 8 x 20 ms
Ri = 50 W
Lightning, nonrepetitive
power line and load
switching
1. DUT = device under test.
2. The EFT immunity level was measured with test limits beyond the IEC 6100044 test, but with the more severe test conditions of
ISO 76373.
Table 3. NUP2105L ESD Test Results
ESD Specification Test Test Level Pass / Fail
Human Body Model Contact 16 kV Pass
IEC 6100042
Contact 30 kV (Note 3) Pass
Noncontact (Air Discharge) 30 kV (Note 3) Pass
3. Test equipment maximum test voltage is 30 kV.
NUP2105L, SZNUP2105L
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6
TVS Diode Protection Circuit
TVS diodes provide protection to a transceiver by
clamping a surge voltage to a safe level. TVS diodes have
high impedance below and low impedance above their
breakdown voltage. A TVS Zener diode has its junction
optimized to absorb the high peak energy of a transient
event, while a standard Zener diode is designed and
specified to clamp a steady state voltage.
Figure 7 provides an example of a dual bidirectional
TVS diode array that can be used for protection with the
highspeed CAN network. The bidirectional array is created
from four identical Zener TVS diodes. The clamping
voltage of the composite device is equal to the breakdown
voltage of the diode that is reversed biased, plus the diode
drop of the second diode that is forwarded biased.
Figure 7. HighSpeed and Fault Tolerant CAN TVS
Protection Circuit
CAN
Transceiver
CAN_H
CAN_L
NUP2105L
CAN Bus
NUP2105L, SZNUP2105L
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7
PACKAGE DIMENSIONS
SOT23 (TO236)
CASE 31808
ISSUE AP
D
A1
3
12
NOTES:
1. DIMENSIONING AND TOLERANCING PER ANSI Y14.5M, 1982.
2. CONTROLLING DIMENSION: INCH.
3. MAXIMUM LEAD THICKNESS INCLUDES LEAD FINISH
THICKNESS. MINIMUM LEAD THICKNESS IS THE MINIMUM
THICKNESS OF BASE MATERIAL.
4. DIMENSIONS D AND E DO NOT INCLUDE MOLD FLASH,
PROTRUSIONS, OR GATE BURRS.
ǒmm
inchesǓ
SCALE 10:1
0.8
0.031
0.9
0.035
0.95
0.037
0.95
0.037
2.0
0.079
SOLDERING FOOTPRINT
VIEW C
L
0.25
L1
q
e
EE
b
A
SEE VIEW C
DIM
A
MIN NOM MAX MIN
MILLIMETERS
0.89 1.00 1.11 0.035
INCHES
A1 0.01 0.06 0.10 0.001
b0.37 0.44 0.50 0.015
c0.09 0.13 0.18 0.003
D2.80 2.90 3.04 0.110
E1.20 1.30 1.40 0.047
e1.78 1.90 2.04 0.070
L0.10 0.20 0.30 0.004
0.040 0.044
0.002 0.004
0.018 0.020
0.005 0.007
0.114 0.120
0.051 0.055
0.075 0.081
0.008 0.012
NOM MAX
L1
H
2.10 2.40 2.64 0.083 0.094 0.104
HE
0.35 0.54 0.69 0.014 0.021 0.029
c
0−−− 10 0 −−− 10
q
STYLE 27:
PIN 1. CATHODE
2. CATHODE
3. CATHODE
ON Semiconductor and are registered trademarks of Semiconductor Components Industries, LLC (SCILLC). SCILLC reserves the right to make changes without further notice
to any products herein. SCILLC makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does SCILLC assume any liability
arising out of the application or use of any product or circuit, and specifically disclaims any and all liability, including without limitation special, consequential or incidental damages.
“Typical” parameters which may be provided in SCILLC data sheets and/or specifications can and do vary in different applications and actual performance may vary over time. All
operating parameters, including “Typicals” must be validated for each customer application by customer’s technical experts. SCILLC does not convey any license under its patent rights
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PUBLICATION ORDERING INFORMATION
N. American Technical Support: 8002829855 Toll Free
USA/Canada
Europe, Middle East and Africa Technical Support:
Phone: 421 33 790 2910
Japan Customer Focus Center
Phone: 81358171050
NUP2105L/D
Honeywell and SDS are registered trademarks of Honeywell International Inc.
DeviceNet is a trademark of Rockwell Automation.
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