35
©2009 Littelfuse, Inc.
Specifications are subject to change without notice.
Transient Voltage Suppression Diodes
Revision: January 09, 2009
1KSMB Series
Surface Mount – 1000W > 1KSMB series
Please refer to http://www.Littelfuse.com/series/1KSMB.html for current information.
1KSMB Series
The 1KSMB series is designed specifically to protect
sensitive electronic equipment from voltage transients
induced by lightning and other transient voltage events.
Description
1KSMB Series
Agency Approvals
Features
t)BMPHFO'SFF
t 3P)4DPNQMJBOU
t 'PSTVSGBDFNPVOUFE
applications to optimize
board space
t -PXQSPmMFQBDLBHF
t #VJMUJOTUSBJOSFMJFG
t 5ZQJDBMNBYJNVN
temperature coefficient
∆VBR = 0.1% x VBR@25°C x ∆T
t (MBTTQBTTJWBUFEDIJQ
junction
t 8QFBLQVMTFQPXFS
capability at 10×1000s
waveform, repetition rate
(duty cycles):0.01%
t 'BTUSFTQPOTFUJNF
typically less than 1.0ps
from 0V to BV min
t &YDFMMFOUDMBNQJOH
capability
t -PXJODSFNFOUBMTVSHF
resistance
t 5ZQJDBM*R less than 1µA
above 12V
t )JHI5FNQFSBUVSF
soldering guaranteed:
260°C/40 seconds at
terminals
t 1MBTUJDQBDLBHFIBT
Underwriters Laboratory
Flammability 94V-O
t .BUUF5JO-FBEoGSFF1MBUFE
t "WBJMBCMFJOCSFBLEPXO
Voltage from 6.8V to 160V
specially designed for
automotive applications
t 0GGFST)JHI4VSHFSBUJOHJO
compact package: bridges
the gap between 600W
and 1.5KW
Applications
TVS devices are ideal for the protection of I/O Interfaces,
VCC bus and other vulnerable circuits used in Telecom,
Computer, Industrial and Consumer electronic applications.
Maximum Ratings and Thermal Characteristics
(TA=25OC unless otherwise noted)
Parameter Symbol Value Unit
Peak Pulse Power Dissipation at
TA=25ºC by 10x1000µs waveform
(Fig.1)(Note 1), (Note 2)
PPPM 1000 W
Power Dissipation on infinite heat
sink at TA=50OCPM(AV) 5.0 W
Peak Forward Surge Current, 8.3ms
Single Half Sine Wave (Note 3) IFSM 100 A
Maximum Instantaneous Forward
Voltage at 50A for Unidirectional
only (Note 4)
VF3.5V/5.0 V
Operating Junction and Storage
Temperature Range T
J, TSTG -65 to 150 °C
Typical Thermal Resistance Junction
to Lead RuJL 20 °C/W
Typical Thermal Resistance Junction
to Ambient RuJA 100 °C/W
Notes:
1. Non-repetitive current pulse , per Fig. 3 and derated above TA = 25OC per Fig. 2.
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
device only, duty cycle=4 per minute maximum.
4. VF<3.5V for VBR _
<
50V and VF<5.0V for VBR _
>
51V.
AGENCY AGENCY FILE NUMBER
E128662
RoHS
36
Transient Voltage Suppression Diodes
Revision: January 09, 2009
©2009 Littelfuse, Inc.
Specifications are subject to change without notice.
Surface Mount – 1000W > 1KSMB series
1KSMB Series
Please refer to http://www.Littelfuse.com/series/1KSMB.html for current information.
Electrical Characteristics
Part
Number
(Uni)
Part
Number
(Bi)
Marking Reverse
Stand off
Voltage VR
(Volts)
Breakdown
Voltage VBR
(Volts) @ IT
Test
Current
IT
(mA)
Maximum
Clamping
Voltage VC
@ Ipp
(V)
Maximum
Peak
Pulse
Current Ipp
(A)
Maximum
Reverse
Leakage IR
@ VR
(μA)
Agency
Approval
UNI BI MIN MAX
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 82.6 180 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 17.10 18.90 1 25.5 39.2 1 x
1KSMB20A 1KSMB20CA A10L N10L 17.10 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 111.00 124.00 137.00 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
For bidirectional type having VR of 10 volts and less, the IR limit is double.
The avaliable parts are “A” type only, the parts without A (VBR is ± 10%) is not avaliable.
37
©2009 Littelfuse, Inc.
Specifications are subject to change without notice.
Transient Voltage Suppression Diodes
Revision: January 09, 2009
1KSMB Series
Surface Mount – 1000W > 1KSMB series
Please refer to http://www.Littelfuse.com/series/1KSMB.html for current information.
1KSMB Series
Ratings and Characteristic Curves (TA=25°C unless otherwise noted)
1
10
100
0.000001 0.00001 0.0001 0.001
td-Pulse Width (sec.)
PPPM-Peak Pulse Power (kW)
0.2x0.2" (5.0x5.0mm)
Copper Pad Area
IPPM- Peak Pulse Current, % IRSM
0
0
50
100
150
1.0 2.0 3.0 4.0
tr=10μsec
Peak Value
IPPM
IPPM
2
TJ=25°C
Pulse Width(td) is defined
as the point where the peak
current decays to 50% of IPPM
10/1000μsec. Waveform
as defined by R.E.A
td
t-Time (ms)
Half Value
IPPM ( )
0
20
40
60
80
100
0 25 50 75 100 125 150 175
Peak Pulse Power (PPP) or Current (IPP)
Derating in Percentage %
TA-Ambient temperature (ºC)
1
10
100
1000
10000
1.0 10.0 100.0 1000.0
Cj (pF)
Tj=25C
f=1.0MHz
Vsig=50mVp-p
Uni-directional V=0V
Bi-directional V=0V
VBR - Reverse Breakdown Voltage (V)
Uni-directional @VR
Bi-directional @VR
0
1
2
3
4
5
6
0 25 50 75 100 125 150 175
TA - Ambient Temperature(ºC)
PM(AV), Steady State Power Dissipation
(W)
Figure 1 - Peak Pulse Power Rating Curve Figure 2 - Pulse Derating Curve
Figure 3 - Pulse Waveform Figure 4 - Typical Junction Capacitance
Figure 5 - Steady State Power Dissipation Derating
Curve
0
20
40
60
80
100
120
1 10 100
Number of Cycles at 60 Hz
IFSM - Peak Forward Surge Current
(A)
Figure 6 - Maximum Non-Repetitive Peak Forward
Surge Current Uni-Directional Only
38
Transient Voltage Suppression Diodes
Revision: January 09, 2009
©2009 Littelfuse, Inc.
Specifications are subject to change without notice.
Surface Mount – 1000W > 1KSMB series
1KSMB Series
Please refer to http://www.Littelfuse.com/series/1KSMB.html for current information.
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-B102D
Environmental Specifications
Temperature Cycle JESD22-A104
Pressure Cooker JESD 22-A102
High Temp. Storage JESD22-A103
HTRB JESD22-A108
Thermal Shock JESD22-A106
Soldering Parameters
Temperature (T)
Time (t)
Ts(min)
Ts(max)
TL
TP
ts
Preheat
tL
tp
Ramp-up Critical Zone
TL to TP
Ramp-down
t 25˚C to Peak
25˚C
Reflow Condition -FBEoGSFFBTTFNCMZ
Pre Heat
- Temperature Min (Ts(min))150°C
- Temperature Max (Ts(max))200°C
- Time (min to max) (ts)oTFDT
Average ramp up rate (Liquidus Temp
(TL) to peak 3°C/second max
TS(max) to TL - Ramp-up Rate 3°C/second max
Reflow - Temperature (TL) (Liquidus) 217°C
- Time (min to max) (ts)oTFDPOET
Peak Temperature (TP)260+0/-5 °C
Time within 5°C of actual peak
Temperature (tp)oTFDPOET
Ramp-down Rate 6°C/second max
Time 25°C to peak Temperature (TP)8 minutes Max.
Do not exceed 280°C
39
©2009 Littelfuse, Inc.
Specifications are subject to change without notice.
Transient Voltage Suppression Diodes
Revision: January 09, 2009
1KSMB Series
Surface Mount – 1000W > 1KSMB series
Please refer to http://www.Littelfuse.com/series/1KSMB.html for current information.
1KSMB Series
Dimensions Inches 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
L
K
J
Dimensions
A
D
EG
F
H
C
B
Cathode Band
DO-214AA (SMB J-Bend)
Part Numbering System
Packaging
Part number Component
Package Quantity Packaging
Option
Packaging
Specification
1KSMBxxxXX DO-214AA 3000 5BQF3FFMoNNwUBQF EIA STD RS-481
Part Marking System
VO LTAGE
BI-DIRECTIONAL
5% VOLTAGE TOLERANCE
SERIES
1KSMB XXX C A
F
XXX
Marking Code
Littelfuse Logo
Cathode Band