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Transient Voltage Suppression Diodes
Surface Mount - 1000W > 1KSMB series
RoHS
1KSMB Series
Description The 1KSMB series is designed specifically to protect sensitive electronic equipment from voltage transients induced by lightning and other transient voltage events. Features resistance less than 1A R above 12V soldering guaranteed: 260C/40 seconds at terminals
applications to optimize board space
Agency Approvals
AGENCY AGENCY FILE NUMBER E128662
temperature coefficient
VBR = 0.1% x VBR@25C x T
Underwriters Laboratory Flammability 94V-O
junction capability at 10x1000s waveform, repetition rate (duty cycles):0.01%
Unit W
Maximum Ratings and Thermal Characteristics (TA=25OC unless otherwise noted)
Parameter Peak Pulse Power Dissipation at TA=25C by 10x1000s waveform (Fig.1)(Note 1), (Note 2) 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 Typical Thermal Resistance Junction to Lead Typical Thermal Resistance Junction to Ambient Symbol PPPM PM(AV) IFSM VF TJ , TSTG RuJL RuJA Value 1000 5.0 100 3.5V/5.0 -65 to 150 20 100
Voltage from 6.8V to 160V specially designed for automotive applications compact package: bridges the gap between 600W and 1.5KW
typically less than 1.0ps from 0V to BV min capability
W A V C C/W C/W
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.
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.
(c)2009 Littelfuse, Inc. Specifications are subject to change without notice. Please refer to http://www.Littelfuse.com/series/1KSMB.html for current information.
35 Revision: January 09, 2009
1KSMB Series
1KSMB Series
Transient Voltage Suppression Diodes
Surface Mount - 1000W > 1KSMB series
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 A10E 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 B10E B10F B10G B10H
BI
N10A N10B N10C N10D N10E 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 O10E O10F O10G O10H
Reverse Stand off Voltage VR (Volts)
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
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
MAX
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
Maximum Maximum Maximum Test Agency Peak Reverse Current Clamping Approval Voltage VC Pulse Leakage IR IT @ Ipp Current Ipp @ VR (mA) (V) (A) (A)
10 10 10 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 1 1 1 10.5 11.3 12.1 13.4 14.5 15.6 16.7 18.2 21.2 22.5 25.5 27 .7 30.6 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 .0 152.0 165.0 179.0 207 .0 219.0 95.2 88.5 82.6 74.6 69.0 64.1 59.9 54.9 47 .2 44.4 39.2 36.1 32.7 30.1 26.7 24.2 21.9 20.0 18.6 16.9 15.4 14.3 13.0 11.8 10.9 9.7 8.8 8.0 7 .3 6.6 6.1 5.6 4.8 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
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.
1KSMB Series
36 Revision: January 09, 2009
(c)2009 Littelfuse, Inc. Specifications are subject to change without notice. Please refer to http://www.Littelfuse.com/series/1KSMB.html for current information.
Transient Voltage Suppression Diodes
Surface Mount - 1000W > 1KSMB series
Ratings and Characteristic Curves (T =25C unless otherwise noted)
A
100 Peak Pulse Power (PPP) or Current (IPP) Derating in Percentage %
100
PPPM-Peak Pulse Power (kW)
80
60
10
40
20
0.2x0.2" (5.0x5.0mm) Copper Pad Area
1 0.000001 0.00001 0.0001 0.001
0 0 25 50 75 100 125 150 175 td-Pulse Width (sec.) TA-Ambient temperature (C)
Figure 3 - Pulse Waveform
150
IPPM- Peak Pulse Current, % IRSM tr=10sec Peak Value IPPM
TJ=25C Pulse Width(td) is defined as the point where the peak current decays to 50% of IPPM
Figure 4 - Typical Junction Capacitance
10000
Bi-directional V=0V Uni-directional V=0V Uni-directional @VR
1000
100
Half Value IPPM IPPM
2
Cj (pF)
()
10/1000sec. Waveform as defined by R.E.A
100
Bi-directional @VR
50
10
Tj=25C f=1.0MHz Vsig=50mVp-p
0
td
0
1.0
2.0 t-Time (ms)
3.0
4.0
1 1.0
10.0
100.0
1000.0
VBR - Reverse Breakdown Voltage (V)
Figure 5 - Steady State Power Dissipation Derating Curve
6 PM(AV), Steady State Power Dissipation (W) 5 4 3 2 1 0 0 25 50 75 100 125 150 175 TA - Ambient Temperature(C)
Figure 6 - Maximum Non-Repetitive Peak Forward Surge Current Uni-Directional Only
120 IFSM - Peak Forward Surge Current (A) 100 80 60 40 20 0 1 10 Number of Cycles at 60 Hz 100
(c)2009 Littelfuse, Inc. Specifications are subject to change without notice. Please refer to http://www.Littelfuse.com/series/1KSMB.html for current information.
37 Revision: January 09, 2009
1KSMB Series
1KSMB Series
Figure 1 - Peak Pulse Power Rating Curve
Figure 2 - Pulse Derating Curve
Transient Voltage Suppression Diodes
Surface Mount - 1000W > 1KSMB series
Soldering Parameters
Reflow Condition
TP
tp
Ramp-up Critical Zone TL to TP
- Temperature Min (Ts(min)) Pre Heat - Temperature Max (Ts(max)) - Time (min to max) (ts) Average ramp up rate (Liquidus Temp (TL) to peak TS(max) to TL - Ramp-up Rate Reflow - Temperature (TL) (Liquidus) - Time (min to max) (ts)
150C 200C
Temperature (T)
TL Ts(max)
tL
3C/second max 3C/second max 217C 260
+0/-5
Ramp-down
Ts(min) ts
Preheat
25C t 25C to Peak
Time (t)
Peak Temperature (TP) Time within 5C of actual peak Temperature (tp) Ramp-down Rate Time 25C to peak Temperature (TP) Do not exceed
C
6C/second max 8 minutes Max. 280C
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-B102D
Environmental Specifications
Temperature Cycle Pressure Cooker High Temp. Storage HTRB Thermal Shock JESD22-A104 JESD 22-A102 JESD22-A103 JESD22-A108 JESD22-A106
1KSMB Series
38 Revision: January 09, 2009
(c)2009 Littelfuse, Inc. Specifications are subject to change without notice. Please refer to http://www.Littelfuse.com/series/1KSMB.html for current information.
Transient Voltage Suppression Diodes
Surface Mount - 1000W > 1KSMB series
Dimensions
DO-214AA (SMB J-Bend)
Dimensions
Cathode Band
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
A B H D F G
C
B C D E F G H I J
E
J
K
L
K L
I
Part Numbering System
1KSMB XXX C A
Part Marking System
Cathode Band
5% VOLTAGE TOLERANCE BI-DIRECTIONAL VOLTAGE SERIES
F
Littelfuse Logo Marking Code
Packaging
Part number 1KSMBxxxXX Component Package DO-214AA Quantity 3000 Packaging Option Packaging Specification EIA STD RS-481
(c)2009 Littelfuse, Inc. Specifications are subject to change without notice. Please refer to http://www.Littelfuse.com/series/1KSMB.html for current information.
39 Revision: January 09, 2009
1KSMB Series
1KSMB Series
XXX

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