TVS Diodes
Surface Mount – 1500W
1000W > 1.5SMB
1KSMB Series
series
1.5SMB Series
RoHS
Pb e3
Description
Uni-directional
Bi-directional
The 1.5SMB Series is designed specifically to protect
sensitive electronic equipment from voltage transients
induced by lightning and other transient voltage events.
Features
Maximum Ratings and Thermal Characteristics
(TA=25OC unless otherwise noted)
Parameter
Symbol
Value
Unit
PPPM
1500
W
Power Dissipation on Infinite Heat
Sink at TL=50OC
PD
5.0
W
Peak Forward Surge Current, 8.3ms
Single Half Sine Wave (Note 3)
IFSM
120
A
Maximum Instantaneous Forward
Voltage at 50A for Unidirectional
Only
VF
5.0
V
Operating Temperature Range
TJ
-65 to 150
°C
Storage Temperature Range
TSTG
-65 to 175
°C
Typical Thermal Resistance Junction
to Lead
RθJL
20
°C/W
Typical Thermal Resistance Junction
to Ambient
RθJA
100
°C/W
Peak Pulse Power Dissipation by
10/1000μs Waveform (Fig.2)
(Note 1), (Note 2)
• For surface mounted
applications to optimize
board space
• Low profile package
• Typical failure mode is
short from over-specified
voltage or current
• Whisker test is conducted
based on JEDEC
JESD201A per its table 4a
and 4c
• ESD protection of data
lines in accordance with
IEC 61000-4-2, 30kV(Air),
30kV (Contact)
• EFT protection of data
lines in accordance with
IEC 61000-4-4
• Built-in strain relief
• Glass passivated chip
junction
• 1500W peak pulse power
capability at 10/1000μs
waveform, repetition rate
(duty cycles):0.01%
• VBR @ TJ= VBR@25°C
x (1+αT x (TJ - 25))
(αT:Temperature
Coefficient, typical value
is 0.1%)
• Excellent clamping
capability
• Low incremental surge
resistance
• Meet MSL level 1 per
J-STD-020, and high
temperature soldering
guaranteed: 260C/10sec
• Matte tin lead–free Plated
• Halogen free and RoHS
compliant
• Pb-free E3 means 2nd level
interconnect is Pb-free
and the terminal finish
material is tin(Sn) (IPC/
JEDEC J-STD-609A.01)
Notes:
1. Non-repetitive current pulse , per Fig. 4 and derated above TJ (initial) =25OC per Fig. 3.
2. Mounted on copper pad area of 0.2x0.2” (5.0 x 5.0mm) to each terminal.
3. Measured on 8.3ms single half sine wave or equivalent square wave for unidirectional
component only, duty cycle=4 per minute maximum.
Functional Diagram
Applications
TVS components are ideal for the protection of I/O
Interfaces, VCC bus and other vulnerable circuits used in
Telecom, Computer, Industrial and Consumer electronic
applications.
Bi-directional
Cathode
Anode
Uni-directional
©2019 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 08/27/19
TVS Diodes
Surface Mount – 1500W
1000W > 1.5SMB
1KSMB Series
series
Electrical Characteristics (T =25°C unless otherwise noted)
A
Part
Number
(Uni)
Part
Number
(Bi)
1.5SMB20A
1.5SMB22A
1.5SMB23A
1.5SMB24A
1.5SMB27A
1.5SMB30A
1.5SMB33A
1.5SMB36A
1.5SMB39A
1.5SMB43A
1.5SMB47A
1.5SMB51A
1.5SMB56A
1.5SMB62A
1.5SMB68A
1.5SMB75A
1.5SMB82A
1.5SMB91A
1.5SMB100A
1.5SMB20CA
1.5SMB22CA
1.5SMB23CA
1.5SMB24CA
1.5SMB27CA
1.5SMB30CA
1.5SMB33CA
1.5SMB36CA
1.5SMB39CA
1.5SMB43CA
1.5SMB47CA
1.5SMB51CA
1.5SMB56CA
1.5SMB62CA
1.5SMB68CA
1.5SMB75CA
1.5SMB82CA
1.5SMB91CA
1.5SMB100CA
Marking
UNI
BI
H15I
H15K
H10L
H15N
H15P
H15S
H15V
H15Z
N15B
N15D
N15F
N15G
N15I
N15K
N15L
N15N
N15P
N15S
N15V
B15I
B15K
B10L
B15N
B15P
B15S
B15V
B15Z
C15B
C15D
C15F
C15G
C15I
C15K
C15L
C15N
C15P
C15S
C15V
Breakdown
Maximum Maximum Maximum Maximum
Maximum
Reverse Voltage VBR Test
Clamping
Peak
Clamping
Peak
Maximum
Reverse
Stand off (Volts) @ IT Current Voltage VC
Pulse
Voltage VC
Pulse
Temperature
Leakage IR
Voltage VR
@ Ipp
Current Ipp
@ Ipp
Current Ipp
coefficient
IT
@ VR
(Volts)
(10/1000μs)
(10/1000μs)
(8/20μs)
(8/20μs)
of
VBR (%/C)
MIN MAX (mA)
(µA)
(V)
(A)
(V)
(A)
17.1
18.8
20.0
20.5
23.1
25.6
28.2
30.8
33.3
36.8
40.2
43.6
47.8
53.0
58.1
64.1
70.1
77.8
85.5
19.0 21.0
20.9 23.1
22.0 24.2
22.8 25.2
25.7 28.4
28.5 31.5
31.4 34.7
34.2 37.8
37.1 41.0
40.9 45.2
44.7 49.4
48.5 53.6
53.2 58.8
58.9 65.1
64.6 71.4
71.3 78.8
77.9 86.1
86.5 95.5
95.0 105.0
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
27.7
30.6
33.2
33.2
37.5
41.4
45.7
49.9
53.9
59.3
64.8
70.1
77.0
85.0
92.0
103.0
113.0
125.0
137.0
54.9
49.7
45.0
45.0
40.5
36.7
33.3
30.5
28.2
25.6
23.5
21.7
19.7
17.9
16.5
14.8
13.5
12.2
11.1
34.8
35.0
35.0
42.9
48.4
53.5
59.0
64.5
69.6
76.6
83.7
90.6
99.5
109.8
118.9
133.1
146.0
161.5
177.0
302.0
273.4
250.0
249.0
222.8
201.9
183.2
167.8
155.1
140.8
129.3
119.4
108.4
98.5
90.8
81.4
74.3
67.1
61.1
20
10
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
0.085
0.088
0.088
0.091
0.092
0.093
0.094
0.096
0.097
0.098
0.099
0.100
0.101
0.102
0.103
0.104
0.105
0.106
0.106
I-V Curve Characteristics
Uni-directional
I
I
Bi-directional
Ipp
Vc VBR VR
IR VF
IT
V
Vc VBR VR
Ipp
PPPM
VR
VBR
VC
IR
VF
IT
IR
IR
IT
VR VBR Vc
V
Ipp
Peak Pulse Power Dissipation -- Max power dissipation
Stand-off Voltage -- Maximum voltage that can be applied to the TVS without operation
Breakdown Voltage -- Maximum voltage that flows though the TVS at a specified test current (IT)
Clamping Voltage -- Peak voltage measured across the TVS at a specified IPPM (peak impulse current)
Reverse Leakage Current -- Current measured at VR
Forward Voltage Drop for Uni-directional
©2019 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 08/27/19
TVS Diodes
1500W > 1.5SMB
Surface Mount – 1000W
1KSMB Series
series
Ratings and Characteristic Curves (T =25°C unless otherwise noted)
A
Figure 1 - TVS Transients Clamping Waveform
Figure 2 - Peak Pulse Power Rating Curve
Voltage Transients
PPPM-Peak Pulse Power (kW)
100
Voltage or Current
Voltage Across TVS
Current Through TVS
10
1
0.1
0.001
0.01
10
Figure 4 - Pulse Waveform
Figure 3 - Peak Pulse Power Derating Curve
100
150
IPPM- Peak Pulse Current, % IRSM
Peak Pulse Power (PPP) or Current (IPP)
Derating in Percentage %
1
td-Pulse Width (ms)
Time
80
60
40
20
0
0.1
0
25
50
75
100
125 150
TJ - Initial Junction Temperature (ºC)
tr=10µsec
TJ=25°C
Pulse Width(td) is defined
as the point where the peak
current decays to 50% of IPPM
Peak Value
IPPM
100
Half Value
IPPM IPPM
( )
2
50
10/1000µsec. Waveform
as defined by R.E.A
td
0
175
0
1.0
2.0
3.0
4.0
t-Time (ms)
Figure 6 - Maximum Non-Repetitive Peak Forward
Surge Current Uni-Directional Only
Figure 5 - Typical Junction Capacitance
10000
Uni -direconal V=0V
120
IFSM - Peak Forward Surge Current
(A)
Bi-direconal V=0V
Cj(pF)
1000
100
Bi/Uni -direconal V=VR
10
100
80
60
40
20
0
1
10
VBR- Reverse Breakdown Voltage(V)
100
1
10
100
Number of Cycles at 60 Hz
©2019 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 08/27/19
TVS Diodes
Surface Mount – 1500W
1000W > 1.5SMB
1KSMB Series
series
Figure 8 - Peak Forward Voltage Drop vs Peak Forward
Current (Typical Values)
Figure 7 - Typical Transient Thermal Impedance
100.0
IF -Peak Forward Current(A)
Transient Thermal Impedance (°C/W)
1000
100
10
1
0.1
0.001
0.01
0.1
1
10
100
10.0
1.0
0.1
1000
1.0
2.0
TP - Pulse Duration (s)
3.0
4.0
5.0
6.0
VF -Peak Forward Voltage(V)
Soldering Parameters
Pre Heat
Lead–free assembly
- Temperature Min (Ts(min))
150°C
- Temperature Max (Ts(max))
200°C
- Time (min to max) (ts)
Ramp-up
TL
60 – 180 secs
Average ramp up rate (Liquidus Temp (TA)
to peak
3°C/second max
TS(max) to TA - Ramp-up Rate
3°C/second max
Reflow
tp
TP
- Temperature (TL) (Liquidus)
217°C
- Time (min to max) (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
Physical Specifications
Weight
0.003 ounce, 0.093 grams
Case
JEDEC DO214AA. Molded plastic body
over glass passivated junction
Polarity
Color band denotes cathode except
Bidirectional.
Terminal
Matte Tin-plated leads, Solderable per
JESD22-B102
Temperature (T)
Reflow Condition
tL
Critical Zone
TL to TP
Ts(max)
Ts(min)
Ramp-down
ts
Preheat
25˚C
t 25˚C to Peak
Time (t)
Environmental Specifications
High Temp. Storage
JESD22-A103
HTRB
JESD22-A108
Temperature Cycling
JESD22-A104
MSL
JEDEC-J-STD-020, Level 1
H3TRB
JESD22-A101
RSH
JESD22-A111
©2019 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 08/27/19
TVS Diodes
Surface Mount – 1500W
1000W > 1.5SMB
1KSMB Series
series
Dimensions
DO-214AA (SMB J-Bend)
C
A
B
H
D
F
E
G
L
K
J
Inches
Dimensions
Cathode Band
(for Uni-directional products only)
Millimeters
Min
Max
Min
Max
A
0.077
0.086
1.950
2.200
B
0.160
0.180
4.060
4.570
C
0.130
0.155
3.300
3.940
D
0.084
0.096
2.130
2.440
E
0.030
0.060
0.760
1.520
F
-
0.008
-
0.203
G
0.205
0.220
5.210
5.590
H
0.006
0.012
0.152
0.305
I
0.089
-
2.260
-
J
0.085
-
2.160
-
K
-
0.107
-
2.740
L
0.085
-
2.160
-
I
Solder Pads
(all dimensions in mm)
Part Numbering System
Part Marking System
1.5SMB XXX C A
F
Cathode Band
5% VBR VOLTAGE TOLERANCE
XX
BI-DIRECTIONAL
YMXXX
VBR VOLTAGE
SERIES
(for uni-directional products only)
Littelfuse Logo
Marking Code
Trace Code Marking
Y:Year Code
M: Month Code
XXX: Lot Code
Packaging
Part number
1.5SMBxxxXX
Component
Package
DO-214AA
Quantity
3000
Packaging
Option
Tape & Reel - 12mm tape/13” reel
Packaging
Specification
EIA STD RS-481
©2019 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 08/27/19
TVS Diodes
Surface Mount – 1500W
1000W > 1.5SMB
1KSMB Series
series
Tape and Reel Specification
0.157
(4.0)
0.47
(12.0)
Cathode
0.315
(8.0)
0.059 DIA
(1.5)
Cover tape
13.0 (330)
0.80 (20.2)
Arbor Hole Dia.
0.49
(12.5)
Dimensions are in inches
(and millimeters).
Direction of Feed
Disclaimer Notice - Information furnished is believed to be accurate and reliable. However, users should independently evaluate the suitability of and
test each product selected for their own applications. Littelfuse products are not designed for, and may not be used in, all applications.
Read complete Disclaimer Notice at http://www.littelfuse.com/disclaimer-electronics.
©2019 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 08/27/19
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