Document
1.5SMB Series
Surface Mount – 1000W
TVS Diodes Datasheet
RoHS Pb e3
Uni-directional
Bi-directional
Maximum Ratings and Thermal Characteristics (TA=25OC unless otherwise noted)
Parameter
Symbol Value Unit
Peak Pulse Power Dissipation by
10/1000μs Waveform (Fig.2) (Note 1), (Note 2)
PPPM
1500
W
Power Dissipation on Infinite Heat Sink at TL=50OC
PD
Peak Forward Surge Current, 8.3ms Single Half Sine Wave (Note 3)
IFSM
5.0
W
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
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.
Description
The 1.5SMB Series is designed specifically to protect sensitive electronic equipment from voltage transients induced by lightning and other transient voltage events.
Features & Benefits
■ For surface mounted applications to optimize board space
■ Low profile package
■ Typical failure mode is short from over-specified voltage or current
■ 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
■ Whisker test is conducted based on JEDEC JESD201A per its table 4a and 4c
■ ESD protection of data lines in accordance with IEC 61000-42, 30kV(Air), 30kV (Contact)
■ EFT protection of data lines in accordance with IEC 610004-4
■ Built-in strain relief
■ Glass passivated chip junction
■ 1500W peak pulse power capability at 10/1000μs waveform, repetition rate (duty cycles):0.01%
■ 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-STD609A.01)
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.
Functional Diagram
Cathode
Bi-directional Uni-directional
Anode
© 2022 Littelfuse, Inc.
1
Specifications are subject to change without notice.
Revised: GD. 12/05/22
1.5SMB Series
Surface Mount – 1000W
TVS Diodes Datasheet
Part Number
(Uni)
Part Number
(Bi)
Electrical Characteristics (TA=25°C unless otherwise noted)
Marking UNI BI
Reverse Stand off Voltage
VR (Volts)
Breakdown Voltage VBR (Volts) @ IT
MIN MAX
Test
Maximum Clamping
Maximum Peak
Maximum Clamping
Current Voltage VC Pulse Current Voltage VC
IT (mA)
@ Ipp (10/1000μs)
(V)
Ipp (10/1000μs)
(A)
@ Ipp (8/20μs)
(V)
Maximum Peak Pulse
Current Ipp (8/20μs)
(A)
Maximum Reverse
Leakage IR @ VR (µA)
Maximum Temperature
coefficient of VBR (%/C)
1.5SMB20A 1.5SMB20CA H15I B15I 17.1 19.0 21.0 1 1.5SMB22A 1.5SMB22CA H15K B15K 18.8 20.9 23.1 1 1.5SMB23A 1.5SMB23CA H10L B10L 20.0 22.0 24.2 1 1.5SMB24A 1.5SMB24CA H15N B15N 20.5 22.8 25.2 1 1.5SMB27A 1.5SMB27CA H15P B15P 23.1 25.7 28.4 1 1.5SMB30A 1.5SMB30CA H15S B15S 25.6 28.5 31.5 1 1.5SMB33A 1.5SMB33CA H15V B15V 28.2 31.4 34.7 1 1.5SMB36A 1.5SMB36CA H15Z B15Z 30.8 34.2 37.8 1 1.5SMB39A 1.5SMB39CA N15B C15B 33.3 37.1 41.0 1 1.5SMB43A 1.5SMB43CA N15D C15D 36.8 40.9 45.2 1 1.5SMB47A 1.5SMB47CA N15F C15F 40.2 44.7 49.4 1 1.5SMB51A 1.5SMB51CA N15G C15G 43.6 48.5 53.6 1 1.5SMB56A 1.5SMB56CA N15I C15I 47.8 53.2 58.8 1 1.5SMB62A 1.5SMB62CA N15K C15K 53.0 58.9 65.1 1 1.5SMB68A 1.5SMB68CA N15L C15L 58.1 64.6 71.4 1 1.5SMB75A 1.5SMB75CA N15N C15N 64.1 71.3 78.8 1 1.5SMB82A 1.5SMB82CA N15P C15P 70.1 77.9 86.1 1 1.5SMB91A 1.5SMB91CA N15S C15S 77.8 86.5 95.5 1 1.5SMB100A 1.5SMB100CA N15V C15V 85.5 95.0 105.0 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
34.8
302.0
20
49.7
35.0
273.4
10
45.0
35.0
250.0
1
45.0
42.9
249.0
1
40.5
48.4
222.8
1
36.7
53.5
201.9
1
33.3
59.0
183.2
1
30.5
64.5
167.8
1
28.2
69.6
155.1
1
25.6
76.6
140.8
1
23.5
83.7
129.3
1
21.7
90.6
119.4
1
19.7
99.5
108.4
1
17.9
109.8
98.5
1
16.5
118.9
90.8
1
14.8
133.1
81.4
1
13.5
146.0
74.3
1
12.2
161.5
67.1
1
11.1
177.0
61.1
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 Uni-directional
I-V Curve Characteristics
I Bi-directional
Ipp
Vc VBR VR
IR VF
V
IT
Vc VBR VR
IT IR
IR IT
V VR VBR Vc
Ipp
PPPM Peak Pulse Power Dissipation - Max power dissipation VR Stand-off Voltage - Maximum voltage th.