Littelfuse 1KSMB User Manual
Transient Voltage Suppression Diodes
Surface Mount – 1000W > 1KSMB series
1KSMB Series
Uni-directional
Bi-directional
Agency Approvals
AGENCY AGENCY FILE NUMBER
E128662
Maximum Ratings and Thermal Characteristics
(TA=25°C unless otherwise noted)
Parameter Symbol Value Unit
Peak Pulse Power Dissipation at
TA=25ºC by 10/1000µs Waveform
(Fig.2)(Note 1), (Note 2)
Power Dissipation on Innite Heat
Sink at T
Peak For ward Surge Current, 8.3ms
Single Half Sine Wave (Note 3)
Maximum Instantaneous Forward
Voltage at 50A for Unidirectional
Only (Note 4)
Operating Junction and Storage
Temperature Range
Typical Thermal Resistance Junction
to Lead
Typical Thermal Resistance Junction
to Ambient
Notes:
1. Non-repetitive current pulse , per Fig. 4 and derated above T
2. Mounted on copper pad area of 0.2x0.2” (5.0 × 5.0mm) to each terminal.
3. Measured on 8.3ms single half sine wave or equivalent square wave for unidirectional
device only, duty cycle=4 per minute maximum.
4. V
<3.5V for V
F
=50°C
A
_< 50V and VF<5.0V for V
BR
BR
Functional Diagram
_> 51V.
P
PPM
P
M(AV)
I
FSM
V
F
, T
T
J
R
uJL
R
uJA
1000 W
100 A
3.5V/5.0 V
-55 to 150 °C
STG
100 °C/W
= 25°C per Fig. 3.
A
5.0 W
20 °C/W
RoHS
Description
The 1KSMB series is designed specifically to protect
sensitive electronic equipment from voltage transients
induced by lightning and other transient voltage events.
Features
• RoHS compliant
• For surface mounted
applications to optimize
board space
• Low prole 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
• IEC-61000-4-2 ESD
15kV(Air), 8kV (Contact)
• ESD protection of data
lines in accordance with
IEC 61000-4-2 (IEC801-2)
• EFT protection of data
lines in accordance with
IEC 61000-4-4 (IEC801-4)
• Built-in strain relief
•
VBR @TJ= VBR@25°C × (1+αT
x (TJ - 25))
(αT: Temperature Coefcient)
• Glass passivated chip
junction
• 1000W peak pulse power
capability at 10/1000μs
waveform, repetition rate
(duty cycles):0.01%
• Fast response time:
typically less than 1.0ps
from 0V to BV min
• Excellent clamping
capability
• Low incremental surge
resistance
• Typical I
less than 1µA
R
above 12V
• High temperature
soldering guaranteed:
260°C/40 seconds at
terminals
• Plastic package has
underwriters laboratory
ammability 94V-O
• Meet MSL level1, per
J-STD-020, LF maximum
peak of 260°C
• Matte tin lead–free Plated
• Available in breakdown
Voltage from 6.8V to 180V
specially designed for
automotive applications
• Offers high-surge rating in
compact package: bridges
the gap between 600W
and 1.5KW
• Halogen free and RoHS
compliant
Applications
TVS devices are ideal for the protection of I/O Interfaces,
V
bus and other vulnerable circuits used in Telecom,
CC
Computer, Industrial and Consumer electronic applications.
1KSMB Series
Cathode
Bi-directional
Uni-directional
Anode
Additional Information
Datasheet
Resources
Specifications are subject to change without notice.
Samples
© 2014 Littelfuse, Inc.
Revised: 01/20/14
Transient Voltage Suppression Diodes
Surface Mount – 1000W > 1KSMB series
Electrical Characteristics (T
Part
Number
(Uni)
Part
Number
(Bi)
=25°C unless otherwise noted)
A
Marking
Reverse
Stand off
Voltage V
UNI BI MIN MAX
(Volts)
Breakdown
Voltage V
(Volts) @ I
R
Maximum
Test
I
T
Clamping
Voltage
@ Ipp
Current
BR
T
(mA)
V
C
Maximum
Peak
Pulse
Current Ipp
(A)
Maximum
Reverse
Leakage
IR @ V
R
(µA)
1KSMB6.8A 1KSMB6.8CA A10A N10A 5.80 6.45 7. 14 10 10.5 95.2 900 x
1KSMB7.5A 1KSMB7.5CA A10B N10B 6.40 7. 13 7.88 10 11. 3 88.5 400 x
1KSMB8.2A 1KSMB8.2CA A10C N10C 7.02 7.79 8.61 10 12.1 82.6 18 0 x
1KSMB9.1A 1KSMB9.1CA A10D N10D 7.78 8.65 9.55 1 13.4 74.6 45 x
1KSMB10A 1KSMB10CA A10E N10E 8.55 9.50 10.50 1 14.5 69.0 8 x
1KSMB11A 1KSMB11CA A10F N10F 9.40 10.50 11.60 1 15.6 64.1 4 x
1KSMB12A 1KSMB12CA A10G N10G 10.20 11.40 12.60 1 16.7 59.9 1 x
1KSMB13A 1KSMB13CA A10H N10H 11. 10 12.40 13.70 1 18.2 54.9 1 x
1KSMB15A 1KSMB15CA A10I N10I 12.80 14.30 15.80 1 21.2 47.2 1 x
1KSMB16A 1KSMB16CA A10J N10J 13.60 15.20 16.80 1 22.5 44.4 1 x
1KSMB18A 1KSMB18CA A10K N10K 15.30 1 7. 1 0 18.90 1 25.5 39.2 1 x
1KSMB20A 1KSMB20CA A10L N10L 1 7. 1 0 19.00 21.00 1 27.7 36.1 1 x
1KSMB22A 1KSMB22CA A10M N10M 18.80 20.90 23.10 1 30.6 32.7 1 x
1KSMB24A 1KSMB24CA A10N N10N 20.50 22.80 25.20 1 33.2 30.1 1 x
1KSMB27A 1KSMB27CA A10O N10O 23.10 25.70 28.40 1 37.5 26.7 1 x
1KSMB30A 1KSMB30CA A10P N10P 25.60 28.50 31.50 1 41.4 24.2 1 x
1KSMB33A 1KSMB33CA A10Q N10Q 28.20 31.40 34.70 1 45.7 21.9 1 x
1KSMB36A 1KSMB36CA A10R N10R 30.80 34.20 37.80 1 49.9 20.0 1 x
1KSMB39A 1KSMB39CA A10S N10S 33.30 37.10 41.00 1 53.9 18.6 1 x
1KSMB43A 1KSMB43CA A10T N10T 36.80 40.90 45.20 1 59.3 16.9 1 x
1KSMB47A 1KSMB47CA A10U N10U 40.20 44.70 49.40 1 64.8 15.4 1 x
1KSMB51A 1KSMB51CA A10V N10V 43.60 48.50 53.60 1 70.1 14.3 1 x
1KSMB56A 1KSMB56CA A10W N10W 47.80 53.20 58.80 1 77.0 13.0 1 x
1KSMB62A 1KSMB62CA A10X N10X 53.00 58.90 65.10 1 85.0 11.8 1 x
1KSMB68A 1KSMB68CA A10Y N10Y 58.10 64.60 71.40 1 92.0 10.9 1 x
1KSMB75A 1KSMB75CA A10Z N10Z 64.10 71.30 78.80 1 103.0 9.7 1 x
1KSMB82A 1KSMB82CA B10A O10A 70.10 77.90 86.10 1 113.0 8.8 1 x
1KSMB91A 1KSMB91CA B10B O10B 77.80 86.50 95.50 1 125.0 8.0 1 x
1KSMB100A 1KSMB100CA B10C O10C 85.50 95.00 105.00 1 137.0 7. 3 1 x
1KSMB110A 1KSMB110CA B10D O10D 94.00 105.00 116.00 1 152.0 6.6 1
1KSMB120A 1KSMB120CA B10E O10E 102.00 114.00 126.00 1 165.0 6.1 1
1KSMB130A 1KSMB130CA B10F O10F 111. 0 0 124.00 137.00 1 179.0 5.6 1
1KSMB150A 1KSMB150CA B10G O10G 128.00 143.00 158.00 1 207.0 4.8 1
1KSMB160A 1KSMB160CA B10H O10H
136.00 152.00 168.00 1 219.0 4.6 1
1KSMB170A 1KSMB170CA B10I O10I 144.50 162.00 179.00 1 234.0 4.3 1
1KSMB180A 1KSMB180CA B10J O10J 153.00 171.00 189.00 1 246.0 4.1 1
For bidirectional type having VR of 10 volts and less, the IR limit is double.
For parts without A V
is ± 10% and VC is 5% higher than with A parts.
BR
Agency
Approval
© 2014 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 01/20/14
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