1SMB5.0AT3 - 600 Watt Peak Power Zener Transient Voltage...
Transcript of 1SMB5.0AT3 - 600 Watt Peak Power Zener Transient Voltage...
1 Publication Order Number:1SMB5.0AT3/D
1SMB5.0AT3G Series,SZ1SMB5.0AT3G Series
600 Watt Peak Power ZenerTransient VoltageSuppressors
Unidirectional
The SMB series is designed to protect voltage sensitive components from high voltage, high energy transients. They have excellent clamping capability, high surge capability, low zener impedance and fast response time. The SMB series is supplied in the Littelfuse exclusive, cost-effective, highly reliable package and is ideal ly sui ted for use in communication systems, automotive, numerical controls, process controls, medical equipment, business machines, power supplies and many other industrial/consumer applications.
Features
Working Peak Reverse Voltage Range − 5.0 V to 170 V
Standard Zener Breakdown Voltage Range − 6.7 V to 199 V
Peak Power − 600 W @ 1.0 ms
ESD Rating of Class 3 (> 16 kV) per Human Body Model
Maximum Clamp Voltage @ Peak Pulse Current
Low Leakage < 5.0 �A Above 10 V
UL 497B for Isolated Loop Circuit Protection
Response Time is Typically < 1.0 ns
SZ Prefix for Automotive and Other Applications Requiring UniqueSite and Control Change Requirements; AEC−Q101 Qualified andPPAP Capable
Pb−Free Packages are Available
Mechanical CharacteristicsCASE: Void-free, transfer-molded, thermosetting plasticFINISH: All external surfaces are corrosion resistant and leads are
readily solderableMAXIMUM CASE TEMPERATURE FOR SOLDERING PURPOSES:
260C for 10 SecondsLEADS: Modified L−Bend providing more contact area to bond padsPOLARITY: Cathode indicated by polarity bandMOUNTING POSITION: Any
PLASTIC SURFACE MOUNTZENER OVERVOLTAGE
TRANSIENT SUPPRESSORS5.0 V − 170 V,
600 W PEAK POWER
Device Package Shipping
ORDERING INFORMATION
SMBCASE 403A
PLASTIC
Cathode Anode
Littelfuse.com
1SMBxxxAT3G SMB(Pb−Free)
2,500 / Tape & Reel
See specific marking information in the device markingcolumn of the Electrical Characteristics table on page 3 ofthis data sheet.
DEVICE MARKING INFORMATION
A = Assembly LocationY = YearWW = Work Weekxx = Device Code (Refer to page 3)� = Pb−Free Package
MARKING DIAGRAM
AYWWxx �
�
(Note: Microdot may be in either location)
SZ1SMBxxxAT3G SMB(Pb−Free)
2,500 / Tape & Reel
Specifications subject to change without notice. © 2016 Littelfuse, Inc.September 19, 2016 − Rev. 13
Uni−Directional TVS
IPP
IF
V
I
IRIT
VRWMVC VBRVF
1SMB5.0AT3G Series, SZ1SMB5.0AT3G Series
MAXIMUM RATINGS
Rating Symbol Value Unit
Peak Power Dissipation (Note 1) @ TL = 25C, Pulse Width = 1 ms PPK 600 W
DC Power Dissipation @ TL = 75C Measured Zero Lead Length (Note 2)Derate Above 75C
Thermal Resistance from Junction−to−Lead
PD
R�JL
3.04025
WmW/CC/W
DC Power Dissipation (Note 3) @ TA = 25CDerate Above 25C
Thermal Resistance from Junction−to−Ambient
PD
R�JA
0.554.4226
WmW/CC/W
Forward Surge Current (Note 4) @ TA = 25C IFSM 100 A
Operating and Storage Temperature Range TJ, Tstg −65 to +150 C
Stresses exceeding Maximum Ratings may damage the device. Maximum Ratings are stress ratings only. Functional operation above theRecommended Operating Conditions is not implied. Extended exposure to stresses above the Recommended Operating Conditions may affectdevice reliability.1. 10 X 1000 �s, non−repetitive.2. 1 in square copper pad, FR−4 board.3. FR−4 board, using minimum recommended footprint, as shown in 403A case outline dimensions spec.4. 1/2 sine wave (or equivalent square wave), PW = 8.3 ms, duty cycle = 4 pulses per minute maximum.
ELECTRICAL CHARACTERISTICS (TA = 25C unlessotherwise noted, VF = 3.5 V Max. @ IF (Note 5) = 30 A)
Symbol Parameter
IPP Maximum Reverse Peak Pulse Current
VC Clamping Voltage @ IPP
VRWM Working Peak Reverse Voltage
IR Maximum Reverse Leakage Current @ VRWM
VBR Breakdown Voltage @ IT
IT Test Current
IF Forward Current
VF Forward Voltage @ IF5. 1/2 sine wave (or equivalent square wave), PW = 8.3 ms,
non−repetitive duty cycle.
2 Publication Order Number:1SMB5.0AT3/D
Specifications subject to change without notice. © 2016 Littelfuse, Inc.September 19, 2016 − Rev. 13
1SMB5.0AT3G Series, SZ1SMB5.0AT3G Series
ELECTRICAL CHARACTERISTICS
Device*Device
Marking
VRWM(Note 6) IR @ VRWM
Breakdown Voltage VC @ IPP (Note 8)Ctyp
(Note 9)VBR (Note 7) Volts @ IT VC IPP
V �A Min Nom Max mA V A pF
1SMB5.0AT3G1SMB6.0AT3G1SMB6.5AT3G1SMB7.0AT3G
KEKGKKKM
5.06.06.57.0
800800500500
6.406.677.227.78
6.77.027.68.19
7.07.377.988.6
10101010
9.210.311.212.0
65.258.353.650.0
2700230021402005
1SMB7.5AT3G1SMB8.0AT3G1SMB8.5AT3G1SMB9.0AT3G
KPKRKTKV
7.58.08.59.0
10050105.0
8.338.899.4410.0
8.779.369.9210.55
9.219.8310.411.1
1.01.01.01.0
12.913.614.415.4
46.544.141.739.0
1890178016901605
1SMB10AT3G1SMB11AT3G1SMB12AT3G1SMB13AT3G
KXKZLELG
10111213
5.05.05.05.0
11.112.213.314.4
11.712.85
1415.15
12.313.514.715.9
1.01.01.01.0
17.018.219.921.5
35.333.030.227.9
1460134512451160
1SMB14AT3G1SMB15AT3G1SMB16AT3G1SMB17AT3G
LKLMLPLR
14151617
5.05.05.05.0
15.616.717.818.9
16.417.618.7519.9
17.218.519.720.9
1.01.01.01.0
23.224.426.027.6
25.824.023.121.7
10851020965915
1SMB18AT3G1SMB20AT3G1SMB22AT3G1SMB24AT3G
LTLVLXLZ
18202224
5.05.05.05.0
20.022.224.426.7
21.0523.3525.6528.1
22.124.526.929.5
1.01.01.01.0
29.232.435.538.9
20.518.516.915.4
870790730675
1SMB26AT3G1SMB28AT3G1SMB30AT3G1SMB33AT3G
MEMGMKMM
26283033
5.05.05.05.0
28.931.133.336.7
30.432.7535.0538.65
31.934.436.840.6
1.01.01.01.0
42.145.448.453.3
14.213.212.411.3
630590555510
1SMB36AT3G1SMB40AT3G1SMB43AT3G1SMB45AT3G
MPMRMTMV
36404345
5.05.05.05.0
40.044.447.850.0
42.146.7550.352.65
44.249.152.855.3
1.01.01.01.0
58.164.569.472.7
10.39.38.68.3
470430400385
1SMB48AT3G1SMB51AT3G1SMB54AT3G1SMB58AT3G
MXMZNENG
48515458
5.05.05.05.0
53.356.760.064.4
56.159.763.1567.8
58.962.766.371.2
1.01.01.01.0
77.482.487.193.6
7.77.36.96.4
365345330310
1SMB60AT3G1SMB64AT3G1SMB70AT3G1SMB75AT3G
NKNMNPNR
60647075
5.05.05.05.0
66.771.177.883.3
70.274.8581.987.7
73.778.686
92.1
1.01.01.01.0
96.8103113121
6.25.85.34.9
300280260245
1SMB85AT3G1SMB90AT3G1SMB100AT3G
NVNXNZ
8590100
55.05.05.0
94.4100111
99.2105.5117
104111123
1.01.01.0
137146162
4.44.13.7
220210190
1SMB110AT3G1SMB120AT3G1SMB130AT3G1SMB150AT3G
PEPGPKPM
110120130150
5.05.05.05.0
122133144167
128.5140
151.5176
135147159185
1.01.01.01.0
177193209243
3.43.12.92.5
175160150135
1SMB160AT3G1SMB170AT3G
PPPR
160170
5.05.0
178189
187.5199
197209
1.01.0
259275
2.32.2
125120
6. A transient suppressor is normally selected according to the working peak reverse voltage (VRWM), which should be equal to or greater thanthe DC or continuous peak operating voltage level.
7. VBR measured at pulse test current IT at an ambient temperature of 25C.8. Surge current waveform per Figure 2 and derate per Figure 4 of the General Data − 600 W at the beginning of this group.9. Bias Voltage = 0 V, F = 1 MHz, TJ = 25C†Please see 1SMB10CAT3 to 1SMB78CAT3 for Bidirectional devices.* Include SZ-prefix devices where applicable.
3 Publication Order Number:1SMB5.0AT3/D
Specifications subject to change without notice. © 2016 Littelfuse, Inc.September 19, 2016 − Rev. 13
1SMB5.0AT3G Series, SZ1SMB5.0AT3G Series
1SMB5.0AT3G
1SMB10AT3G
1SMB48AT3G
1SMB170AT3G
NONREPETITIVEPULSE WAVEFORMSHOWN IN FIGURE 2
tP, PULSE WIDTH
1
10
100
0.1 �s 1 �s 10 �s 100 �s 1 ms 10 ms0.1
Figure 1. Pulse Rating Curve
0 1 2 3 40
50
100
t, TIME (ms)
VALU
E (%
)
HALF VALUE - IPP2
PEAK VALUE - IPP
tr� 10 �s
Figure 2. Pulse Waveform
Figure 3. Pulse Derating Curve
Vin VL
Zin
LOAD
Figure 4. Typical Junction Capacitance vs. Bias Voltage
PEAK
PU
LSE
DER
ATIN
G IN
% O
FPE
AK P
OW
ER O
R C
UR
REN
T @
T A=
25C
100
80
60
40
20
00 25 50 75 100 125 150
TA, AMBIENT TEMPERATURE (C)
120
140
160
tP
PULSE WIDTH (tP) IS DEFINED ASTHAT POINT WHERE THE PEAKCURRENT DECAYS TO 50% OFIPP.
BIAS VOLTAGE (VOLTS)
Figure 5. Typical Protection Circuit
1 10 100 1000
10
100
1000
10,000
C, C
APA
CIT
AN
CE
(pF)
PP
K, P
EA
K P
OW
ER
(kW
)
1
TJ = 25Cf = 1 MHz
5
4 Publication Order Number:1SMB5.0AT3/D
Specifications subject to change without notice. © 2016 Littelfuse, Inc.September 19, 2016 − Rev. 13
1SMB5.0AT3G Series, SZ1SMB5.0AT3G Series
APPLICATION NOTES
Response TimeIn most applications, the transient suppressor device is
placed in parallel with the equipment or component to beprotected. In this situation, there is a time delay associatedwith the capacitance of the device and an overshootcondition associated with the inductance of the device andthe inductance of the connection method. The capacitiveeffect is of minor importance in the parallel protectionscheme because it only produces a time delay in thetransition from the operating voltage to the clamp voltage asshown in Figure 6.
The inductive effects in the device are due to actualturn-on time (time required for the device to go from zerocurrent to full current) and lead inductance. This inductiveeffect produces an overshoot in the voltage across theequipment or component being protected as shown inFigure 7. Minimizing this overshoot is very important in theapplication, since the main purpose for adding a transientsuppressor is to clamp voltage spikes. The SMB series havea very good response time, typically < 1.0 ns and negligibleinductance. However, external inductive effects couldproduce unacceptable overshoot. Proper circuit layout,
minimum lead lengths and placing the suppressor device asclose as possible to the equipment or components to beprotected will minimize this overshoot.
Some input impedance represented by Zin is essential toprevent overstress of the protection device. This impedanceshould be as high as possible, without restricting the circuitoperation.
Duty Cycle DeratingThe data of Figure 1 applies for non-repetitive conditions
and at a lead temperature of 25C. If the duty cycle increases,the peak power must be reduced as indicated by the curvesof Figure 8. Average power must be derated as the lead orambient temperature rises above 25C. The average powerderating curve normally given on data sheets may benormalized and used for this purpose.
At first glance the derating curves of Figure 8 appear to bein error as the 10 ms pulse has a higher derating factor thanthe 10 �s pulse. However, when the derating factor for agiven pulse of Figure 8 is multiplied by the peak powervalue of Figure 1 for the same pulse, the results follow theexpected trend.
VL
V
Vin
Vin (TRANSIENT)VL
td
V
Vin (TRANSIENT)OVERSHOOT DUE TOINDUCTIVE EFFECTS
tD = TIME DELAY DUE TO CAPACITIVE EFFECTt t
Figure 6. Figure 7.
Figure 8. Typical Derating Factor for Duty Cycle
DE
RAT
ING
FA
CTO
R
1 ms
10 �s
10.70.5
0.3
0.05
0.1
0.2
0.01
0.020.03
0.07
100 �s
0.1 0.2 0.5 2 5 10 501 20 100D, DUTY CYCLE (%)
PULSE WIDTH10 ms
5 Publication Order Number:1SMB5.0AT3/D
Specifications subject to change without notice. © 2016 Littelfuse, Inc.September 19, 2016 − Rev. 13
1SMB5.0AT3G Series, SZ1SMB5.0AT3G Series
UL RECOGNITION
The entire series has Underwriters LaboratoryRecognition for the classification of protectors (QVGQ2)under the UL standard for safety 497B and File .Many competitors only have one or two devices recognizedor have recognition in a non-protective category. Somecompetitors have no recognition at all. With the UL497Brecognition, our parts successfully passed several tests
including Strike Voltage Breakdown test, EnduranceConditioning, Temperature test, DielectricVoltage-Withstand test, Discharge test and several more.
Whereas, some competitors have only passed aflammability test for the package material, we have beenrecognized for much more to be included in their Protectorcategory.
6 Publication Order Number:1SMB5.0AT3/D
Specifications subject to change without notice. © 2016 Littelfuse, Inc.September 19, 2016 − Rev. 13
#E128662
1SMB5.0AT3G Series, SZ1SMB5.0AT3G Series
PACKAGE DIMENSIONS
SMBCASE 403A−03
ISSUE H
E
b D
cL1L
A
A1
NOTES:1. DIMENSIONING AND TOLERANCING PER ANSI Y14.5M, 1982.2. CONTROLLING DIMENSION: INCH.3. D DIMENSION SHALL BE MEASURED WITHIN DIMENSION P.
2.2610.089
2.7430.108
2.1590.085 � mm
inches�SCALE 8:1
SOLDERING FOOTPRINT
DIMA
MIN NOM MAX MINMILLIMETERS
1.90 2.20 2.28 0.075
INCHES
A1 0.05 0.10 0.19 0.002b 1.96 2.03 2.20 0.077c 0.15 0.23 0.31 0.006D 3.30 3.56 3.95 0.130E 4.06 4.32 4.60 0.160
L 0.76 1.02 1.60 0.030
0.087 0.0900.004 0.0070.080 0.0870.009 0.0120.140 0.1560.170 0.181
0.040 0.063
NOM MAX
5.21 5.44 5.60 0.205 0.214 0.220HE
0.51 REF 0.020 REF
D
L1
HE
POLARITY INDICATOROPTIONAL AS NEEDED
7 Publication Order Number:1SMB5.0AT3/D
Specifications subject to change without notice. © 2016 Littelfuse, Inc.September 19, 2016 − Rev. 13
Littelfuse.com
Information furnished is believed to be accurate and reliable. However, users should independently evaluate the suitability of and test each product selected for their own applications. Littelfuse products are not designed for, and shall not be used for, any purpose (including, without limitation, military, aerospace, medical, life-saving, life-sustaining or nuclear facility applications, devices intended for surgical implant into the body, or any other application in which the failure or lack of desired operation of the product may result in personal injury, death, or property damage) other than those expressly set forth in applicable Littelfuse product documentation. Warranties granted by Littelfuse shall be deemed void for products used for any purpose not expressly set forth in applicable Littelfuse documentation. Littelfuse shall not be liable for any claims or damages arising out of products used in applications not expressly intended by Littelfuse as set forth in applicable Littelfuse documentation. The sale and use of Littelfuse products is subject to Littelfuse Terms and Conditions of Sale, unless otherwise agreed by Littelfuse.