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Transient Voltage Suppression Diodes
Surface Mount – 1000W
RoHS 1KSMB Series
Agency Approvals
AGENCY
AGENCY FILE NUMBER
E128662
Maximum Ratings and Thermal Characteristics
(TA=25OC unless otherwise noted)
Parameter
Symbol
Peak Pulse Power Dissipation at
(TFAi=g2.15)º(CNobtye110)x, 1(N00o0teμs2)waveform
PPPM
Power Dissipation on infinite heat
sink at TA=50OC
Peak Forward 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
PM(AV)
IFSM
VF
TJ, TSTG
Value
1000
5.0
100
3.5V/5.0
-65 to 150
Unit
W
W
A
V
°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.
.PVOUFEPODPQQFSQBEBSFBPGYw YNN UPFBDIUFSNJOBM
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.
Description
The 1KSMB series is designed specifically to protect
sensitive electronic equipment from voltage transients
induced by lightning and other transient voltage events.
Features
t 3P)4DPNQMJBOU
t 'PSTVSGBDFNPVOUFE
applications to optimize
board space
t -PXQSPmMFQBDLBHF
t #VJMUJOTUSBJOSFMJFG
t 5ZQJDBMNBYJNVN
temperature coefficient
Δ VBR = 0.1% × VBR@25°C
t (MBTTQBTTJWBUFEDIJQ
KVODUJPO
t 8QFBLQVMTFQPXFS
capability at 10×1000μs
waveform, repetition rate
(duty cycles):0.01%
t 'BTUSFTQPOTFUJNF
typically less than 1.0ps
from 0V to BV min
t &YDFMMFOUDMBNQJOH
capability
t -PXJODSFNFOUBMTVSHF
resistance
t 5ZQJDBM*R less than 1μA
above 12V
t )JHI5FNQFSBUVSF
soldering guaranteed:
260°C/40 seconds at
terminals
t 1MBTUJDQBDLBHFIBT
Underwriters Laboratory
Flammability 94V-O
t .BUUF5JO-FBEoGSFF
Plated
t "WBJMBCMFJOCSFBLEPXO
Voltage from 6.8V
to 160V specially
designed for automotive
applications
t 0GGFST)JHI4VSHFSBUJOH
in 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.
1KSMB Series
Specifications are subject to change without notice.
25
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Transient Voltage Suppression Diodes
Surface Mount – 1000W
Electrical Characteristics
Part
Number
(Uni)
1KSMB6.8A
1KSMB7.5A
1KSMB8.2A
1KSMB9.1A
1KSMB10A
1KSMB11A
1KSMB12A
1KSMB13A
1KSMB15A
1KSMB16A
1KSMB18A
1KSMB20A
1KSMB22A
1KSMB24A
1KSMB27A
1KSMB30A
1KSMB33A
1KSMB36A
1KSMB39A
1KSMB43A
1KSMB47A
1KSMB51A
1KSMB56A
1KSMB62A
1KSMB68A
1KSMB75A
1KSMB82A
1KSMB91A
1KSMB100A
1KSMB110A
1KSMB120A
1KSMB130A
1KSMB150A
1KSMB160A
Part
Number
(Bi)
1KSMB6.8CA
1KSMB7.5CA
1KSMB8.2CA
1KSMB9.1CA
1KSMB10CA
1KSMB11CA
1KSMB12CA
1KSMB13CA
1KSMB15CA
1KSMB16CA
1KSMB18CA
1KSMB20CA
1KSMB22CA
1KSMB24CA
1KSMB27CA
1KSMB30CA
1KSMB33CA
1KSMB36CA
1KSMB39CA
1KSMB43CA
1KSMB47CA
1KSMB51CA
1KSMB56CA
1KSMB62CA
1KSMB68CA
1KSMB75CA
1KSMB82CA
1KSMB91CA
1KSMB100CA
1KSMB110CA
1KSMB120CA
1KSMB130CA
1KSMB150CA
1KSMB160CA
Marking
UNI
A10A
A10B
A10C
A10D
"&
A10F
A10G
A10H
A10I
A10J
A10K
A10L
A10M
A10N
A10O
A10P
A10Q
A10R
A10S
A10T
A10U
A10V
A10W
A10X
A10Y
A10Z
B10A
B10B
B10C
B10D
#&
B10F
B10G
B10H
BI
N10A
N10B
N10C
N10D
/&
N10F
N10G
N10H
N10I
N10J
N10K
N10L
N10M
N10N
N10O
N10P
N10Q
N10R
N10S
N10T
N10U
N10V
N10W
N10X
N10Y
N10Z
O10A
O10B
O10C
O10D
0&
O10F
O10G
O10H
Reverse
Stand off
Vo(lVtaogltes)VR
5.80
6.40
7.02
7.78
8.55
9.40
10.20
11.10
12.80
13.60
15.30
17.10
18.80
20.50
23.10
25.60
28.20
30.80
33.30
36.80
40.20
43.60
47.80
53.00
58.10
64.10
70.10
77.80
85.50
94.00
102.00
111.00
128.00
136.00
Breakdown
Voltage VBR
(Volts) @ IT
MIN MAX
6.45
7.13
7.79
8.65
9.50
10.50
11.40
12.40
14.30
15.20
17.10
19.00
20.90
22.80
25.70
28.50
31.40
34.20
37.10
40.90
44.70
48.50
53.20
58.90
64.60
71.30
77.90
86.50
95.00
105.00
114.00
124.00
143.00
152.00
7.14
7.88
8.61
9.55
10.50
11.60
12.60
13.70
15.80
16.80
18.90
21.00
23.10
25.20
28.40
31.50
34.70
37.80
41.00
45.20
49.40
53.60
58.80
65.10
71.40
78.80
86.10
95.50
105.00
116.00
126.00
137.00
158.00
168.00
For bidirectional type having VR of 10 volts and less, the IR limit is double.
5IFBWBMJBCMFQBSUTBSFi"wUZQFPOMZ UIFQBSUTXJUIPVU" 7BR is ± 10%) is not avaliable.
Test
Current
IT
(mA)
Maximum Maximum Maximum
Clamping Peak Reverse
Voltage VC Pulse Leakage IR
@(VI)pp
Current
(A)
Ipp
@(μAV)R
Agency
Approval
10 10.5 95.2
10 11.3 88.5
10 12.1 82.6
1 13.4 74.6
1 14.5 69.0
1 15.6 64.1
1 16.7 59.9
1 18.2 54.9
1 21.2 47.2
1 22.5 44.4
1 25.5 39.2
1 27.7 36.1
1 30.6 32.7
1 33.2 30.1
1 37.5 26.7
1 41.4 24.2
1 45.7 21.9
1 49.9 20.0
1 53.9 18.6
1 59.3 16.9
1 64.8 15.4
1 70.1 14.3
1 77.0 13.0
1 85.0 11.8
1 92.0 10.9
1 103.0 9.7
1 113.0 8.8
1 125.0 8.0
1 137.0 7.3
1 152.0 6.6
1 165.0 6.1
1 179.0 5.6
1 207.0 4.8
1 219.0 4.6
900
400
180
45
8
4
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
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©2007 Littelfuse
26 1KSMB Series
Specifications are subject to change without notice.

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Transient Voltage Suppression Diodes
Surface Mount – 1000W
Ratings and Characteristic Curves (TA=25°C unless otherwise noted)
Figure 1 - Peak Pulse Power Rating Curve
Figure 2 - Pulse Derating Curve
100 100
80
60
10
40
0.2x0.2" (5.0x5.0mm)
Copper Pad Area
1
0.000001
0.00001
0.0001
td-Pulse Width (sec.)
0.001
20
0
0
25 50 75 100 125 150 175
TA-Ambient temperature (ºC)
Figure 3 - Pulse Waveform
150
100
50
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
Half Value
( )IPPM IPPM
2
10/1000μsec. Waveform
as defined by R.E.A
0
0
td
1.0
2.0
t-Time (ms)
3.0
4.0
Figure 4 - Typical Junction Capacitance
10000
1000
Bi-directional V=0V
Uni-directional V=0V
Uni-directional @VR
100
Bi-directional @VR
10
Tj=25C
f =1.0MHz
Vsig=50mVp-p
1
1.0
10.0
100.0
1000.0
VBR - Reverse Breakdown Voltage (V)
Figure 5 - Steady State Power Dissipation Derating
Curve
6
5
4
3
2
1
0
0 25 50 75 100 125 150 175
TA - Ambient Temperature(ºC)
Figure 6 - Maximum Non-Repetitive Peak Forward
Surge Current Uni-Directional Only
120
100
80
60
40
20
0
1
10
Number of Cycles at 60 Hz
100
1KSMB Series
Specifications are subject to change without notice.
27
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Transient Voltage Suppression Diodes
Surface Mount – 1000W
Soldering Parameters
Reflow Condition
-FBEoGSFFBTTFNCMZ
- Temperature Min (Ts(min))
Pre Heat - Temperature Max (Ts(max))
- Time (min to max) (ts)
Average ramp up rate (LiquidusTemp
(TL) to peak
TS(max) to TL - Ramp-up Rate
Reflow
-Temperature (TL) (Liquidus)
- Time (min to max) (ts)
Peak Temperature (TP)
Time within 5°C of actual peak
Temperature (tp)
Ramp-down Rate
Time 25°C to peakTemperature (TP)
Do not exceed
150°C
200°C
oTFDT
3°C/second max
3°C/second max
217°C
oTFDPOET
260+0/-5 °C
oTFDPOET
6°C/second max
8 minutes Max.
280°C
TP
TL
Ts(max)
Ts(min)
25˚C
Ramp-up
tp
tL
Critical Zone
TL to TP
ts
Preheat
Ramp-down
t 25˚C to Peak
Time (t)
Physical Specifications
Weight
Case
Polarity
Terminal
0.003 ounce, 0.093 grams
+&%&$%0"".PMEFEQMBTUJDCPEZ
PWFSHMBTTQBTTJWBUFEKVODUJPO
Color band denotes cathode except
Bidirectional.
Matte Tin-plated leads, Solderable per
+&4%#%
Environmental Specifications
Temperature Cycle
Pressure Cooker
High Temp. Storage
HTRB
Thermal Shock
+&4%"
+&4%"
+&4%"
+&4%"
+&4%"
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©2007 Littelfuse
28 1KSMB Series
Specifications are subject to change without notice.

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Transient Voltage Suppression Diodes
Surface Mount – 1000W
Dimensions
DO-214AA (SMB J-Bend)
Cathode Band
AC
D
E
J
B
H
F
G
KL
I
Dimensions
A
B
C
D
&
F
G
H
I
J
K
L
Inches
Min Max
0.077
0.086
0.160
0.180
0.130
0.155
0.084
0.096
0.030
0.060
- 0.008
0.205
0.220
0.006
0.012
0.089
-
0.085
-
- 0.107
0.085
-
Millimeters
Min Max
1.950
2.200
4.060
4.570
3.300
3.940
2.130
2.440
0.760
1.520
- 0.203
5.210
5.590
0.152
0.305
2.260
-
2.160
-
- 2.740
2.160
-
Part Numbering System
1KSMB XXX C A
SERIES
5% VOLTAGE TOLERANCE
BI-DIRECTIONAL
VOLTAGE
Part Marking System
Cathode Band
F
Littelfuse Logo
Marking Code
Packaging
Part number
1KSMBxxxXX
Component
Package
DO-214AA
Quantity
3000
Packaging
Option
5BQF3FFMoNNwUBQF
Packaging
Specification
&*"45%34
1KSMB Series
Specifications are subject to change without notice.
29
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©2007 Littelfuse