Surface Mount – 1500W > 1.5SMB Series
1000W 1KSMB series
TVS Diodes
1.5SMB Series
Uni-directional
Bi-directional
Description
RoHS
Pb
e3
The 1.5SMB Series is designed specifically to protect
sensitive electronic equipment from voltage transients
induced by lightning and other transient voltage events.
Features
• 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%
• V
BR
@ T
J
= V
BR
@25°C
x (1+
α
T x (T
J
- 25))
(
α
T: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 2
nd
level
interconnect is Pb-free
and the terminal finish
material is tin(Sn) (IPC/
JEDEC J-STD-609A.01)
Maximum Ratings and Thermal Characteristics
(T
A
=25
O
C unless otherwise noted)
Parameter
Peak Pulse Power Dissipation by
10/1000μs Waveform (Fig.2)
(Note 1), (Note 2)
Power Dissipation on Infinite Heat
Sink at T
L
=50
O
C
Peak Forward Surge Current, 8.3ms
Single Half Sine Wave (Note 3)
Maximum Instantaneous Forward
Voltage at 50A for Unidirectional
Only
Operating Temperature Range
Storage Temperature Range
Typical Thermal Resistance Junction
to Lead
Typical Thermal Resistance Junction
to Ambient
Symbol
P
PPM
P
D
I
FSM
V
F
T
J
T
STG
R
θJL
R
θJA
Value
1500
5.0
120
5.0
-65 to 150
-65 to 175
20
100
Unit
W
W
A
V
°C
°C
°C/W
°C/W
Notes:
1. Non-repetitive current pulse , per Fig. 4 and derated above T
J
(initial) =25
O
C 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, V
CC
bus and other vulnerable circuits used in
Telecom, Computer, Industrial and Consumer electronic
applications.
Bi-directional
Cathode
Uni-directional
Anode
©2019 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 08/27/19
Surface Mount – 1500W > 1.5SMB Series
1000W 1KSMB series
TVS Diodes
Electrical Characteristics
(T =25°C unless otherwise noted)
A
Part
Number
(Uni)
Part
Number
(Bi)
Marking
UNI
H15I
H15K
H10L
H15N
H15P
H15S
H15V
H15Z
N15B
N15D
N15F
N15G
N15I
N15K
N15L
N15N
N15P
N15S
N15V
BI
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 V
BR
Test
Clamping
Peak
Clamping
Peak
Maximum
Reverse
(Volts) @ I
T
Current Voltage V
C
Stand off
Pulse
Voltage V
C
Pulse
Temperature
Leakage I
R
Voltage V
R
@ I
pp
Current I
pp
@ I
pp
Current I
pp
coefficient
I
T
@ V
R
(Volts)
(10/1000μs) (10/1000μs) (8/20μs)
(8/20μs)
of V
BR
(%/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
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
I-V Curve Characteristics
Uni-directional
I
Bi-directional
I
I
pp
Vc V
BR
V
R
I
R
V
F
I
T
V
Vc V
BR
V
R
I
T
I
R
I
R
I
T
V
R
V
BR
Vc
V
I
pp
I
pp
P
PPM
V
R
V
BR
V
C
I
R
V
F
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 (I
T
)
Clamping Voltage
-- Peak voltage measured across the TVS at a specified I
PPM
(peak impulse current)
Reverse Leakage Current
-- Current measured at V
R
Forward Voltage Drop for Uni-directional
©2019 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 08/27/19
1500W 1KSMB series
Surface Mount – 1000W > 1.5SMB Series
TVS Diodes
Ratings and Characteristic Curves
(T =25°C unless otherwise noted)
A
Figure 1 - TVS Transients Clamping Waveform
Voltage Transients
Figure 2 - Peak Pulse Power Rating Curve
100
Voltage Across TVS
Voltage or Current
P
PPM
-Peak Pulse Power (kW)
10
Current Through TVS
1
0.1
0.001
0.01
0.1
1
10
Time
t
d
-Pulse Width (ms)
Figure 3 - Peak Pulse Power Derating Curve
100
Peak Pulse Power (P
PP
) or Current (I
PP
)
Derating in Percentage %
80
60
40
20
0
Figure 4 - Pulse Waveform
150
I
PPM
- Peak Pulse Current, % I
RSM
tr=10µsec
Peak Value
IPPM
TJ=25°C
Pulse Width(td) is defined
as the point where the peak
current decays to 50% of IPPM
100
Half Value
IPPM
IPPM
2
( )
10/1000µsec. Waveform
as defined by R.E.A
50
0
25
50
75
100 125 150
T
J
- Initial Junction Temperature (ºC)
175
0
td
0
1.0
2.0
t-Time (ms)
3.0
4.0
Figure 5 - Typical Junction Capacitance
10000
Uni -direc onal V=0V
Figure 6 - Maximum Non-Repetitive Peak Forward
Surge Current Uni-Directional Only
120
I
FSM
- Peak Forward Surge Current
(A)
Bi-direc onal V=0V
1000
100
80
60
40
20
0
Cj(pF)
100
Bi/Uni -direc onal V=V
R
10
1
10
V
BR
- Reverse Breakdown Voltage(V)
100
1
10
Number of Cycles at 60 Hz
100
©2019 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 08/27/19
Surface Mount – 1500W > 1.5SMB Series
1000W 1KSMB series
TVS Diodes
Figure 7 - Typical Transient Thermal Impedance
1000
Transient Thermal Impedance (°C/W)
Figure 8 - Peak Forward Voltage Drop vs Peak Forward
Current (Typical Values)
100.0
100
I
F
-Peak Forward Current(A)
0.01
0.1
1
10
100
1000
10.0
10
1
1.0
0.1
0.001
0.1
1.0
2.0
3.0
4.0
5.0
6.0
T
P
- Pulse Duration (s)
V
F
-Peak Forward Voltage(V)
Soldering Parameters
Reflow Condition
- Temperature Min (T
s(min)
)
Pre Heat
- Temperature Max (T
s(max)
)
- Time (min to max) (t
s
)
Average ramp up rate (Liquidus Temp (T
A
)
to peak
T
S(max)
to T
A
- Ramp-up Rate
Reflow
- Temperature (T
L
) (Liquidus)
- Time (min to max) (t
L
)
Lead–free assembly
150°C
200°C
T
L
T
P
Ramp-up
t
p
Critical Zone
T
L
to T
P
Temperature (T)
60 – 180 secs
3°C/second max
3°C/second max
217°C
60 – 150 seconds
260
+0/-5
°C
20 – 40 seconds
6°C/second max
8 minutes Max.
260°C
t
L
T
s(max)
Ramp-down
T
s(min)
Preheat
t
s
25˚C
t 25˚C to Peak
Time (t)
Peak Temperature (T
P
)
Time within 5°C of actual peak
Temperature (t
p
)
Ramp-down Rate
Time 25°C to peak Temperature (T
P
)
Do not exceed
Environmental Specifications
High Temp. Storage
HTRB
Temperature Cycling
JESD22-A103
JESD22-A108
JESD22-A104
JEDEC-J-STD-020, Level 1
JESD22-A101
JESD22-A111
Physical Specifications
Weight
Case
Polarity
Terminal
0.003 ounce, 0.093 grams
JEDEC DO214AA. Molded plastic body
over glass passivated junction
Color band denotes cathode except
Bidirectional.
Matte Tin-plated leads, Solderable per
JESD22-B102
MSL
H3TRB
RSH
©2019 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 08/27/19
Surface Mount – 1500W > 1.5SMB Series
1000W 1KSMB series
TVS Diodes
Dimensions
DO-214AA (SMB J-Bend)
Cathode Band
(for Uni-directional products only)
Dimensions
A
Inches
Min
0.077
0.160
0.130
0.084
0.030
-
0.205
0.006
0.089
0.085
-
0.085
Max
0.086
0.180
0.155
0.096
0.060
0.008
0.220
0.012
-
-
0.107
-
Millimeters
Min
1.950
4.060
3.300
2.130
0.760
-
5.210
0.152
2.260
2.160
-
2.160
Max
2.200
4.570
3.940
2.440
1.520
0.203
5.590
0.305
-
-
2.740
-
A
B
H
D
F
G
C
B
C
D
E
F
G
H
I
E
J
K
L
J
K
L
I
Solder Pads
Part Numbering System
(all dimensions in mm)
Part Marking System
1.5SMB XXX C A
F
YMXXX
(for uni-directional products only)
Cathode Band
Littelfuse Logo
5%
V
BR
VOLTAGE TOLERANCE
BI-DIRECTIONAL
V
BR
VOLTAGE
XX
Marking Code
Trace Code Marking
Y:Year Code
M: Month Code
XXX: Lot Code
SERIES
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
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