© 2017 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 07/24/17
TVS Diodes
Surface Mount > 1500W > SZ1SMC5.0AT3G Series
• Working Peak Reverse Voltage Range − 5.0 V to 78 V
• Standard Zener Breakdown Voltage Range −
6.7 V to 91.25 V
• Peak Power − 1500 W @ 1 ms
• ESD Rating of Class 3 (> 16 KV) per Human Body Model
• Maximum Clamp Voltage @ Peak Pulse Current
• Low Leakage < 5 µA Above 10 V
• UL 497B for Isolated Loop Circuit Protection
• Maximum Temperature Coefficient Specified
• Response Time is Typically < 1 ns
• Pb−Free Packages are Available
• SZ Prefix for Automotive and Other Applications Requiring
Unique Site and Control Change Requirements;
AEC−Q101 Qualified and PPAP Capable
Features
The SZ1SMC5.0AT3G 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 SZ1SMC5.0AT3G series is supplied in the
Littelfuse exclusive, cost-effective, highly reliable package
and is ideally suited for use in communication systems,
automotive, numerical controls, process controls, medical
equipment, business machines, power supplies and many
other industrial/consumer applications.
Description
Parameter Symbol Value Unit
Peak Power Dissipation (Note 1) @ TL =
25°C, Pulse Width = 1 ms PPK 1500 W
DC Power Dissipation @ TL = 75°C
Measured Zero Lead Length (Note 2)
Derate Above 75°C
Thermal Resistance from Junction−to−
Lead
PD
R
JL
4.0
54.6
18.3
W
mW/°C
°C/W
DC Power Dissipation (Note 3)
@ TA = 25°C
Derate Above 25°C
Thermal Resistance from Junction–to–
Ambient
PD
R8JA
0.75
6.1
165
W
mW/°C
°C/W
Forward Surge Current (Note 4) @ TA
= 25°C
IFSM 200 A
Operating and Storage Temperature
Range TJ, Tstg
-65 to
+150 °C
Maximum Ratings and Thermal Characteristics
SZ1SMC5.0AT3G Series
Functional Diagram
Bi-directional
Uni-directional
Cathode Anode
Pb
Stresses exceeding Maximum Ratings may damage the device. Maximum Ratings are stress
ratings only. Functional operation above the Recommended Operating Conditions is not
implied. Extended exposure to stresses above the Recommended Operating Conditions
may affect device reliability.
1. 10 x 1000 µs, non−repetitive.
2. 1 in square copper pad, FR−4 board.
3. FR−4 board, using Littelfuse minimum recommended footprint, as shown in 403-03 case
outline dimensions spec.
4. 1/2 sine wave (or equivalent square wave), PW = 8.3 ms, duty cycle = 4 pulses per minute
maximum.
Additional Information
Samples
Resources
Datasheet
Bi-directional
Uni-directional
Cathode Anode
© 2017 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 07/24/17
TVS Diodes
Surface Mount > 1500W > SZ1SMC5.0AT3G Series
Symbol Parameter
IPP Maximum Reverse Peak Pulse Current
VCClamping Voltage @ IPP
VRWM Working Peak Reverse Voltage
IRMaximum Reverse Leakage Current @ VRWM
VBR Breakdown Voltage @ IT
ITTest Current
IFForward Current
VFForward Voltage @ IF
I-V Curve Characteristics (TA = 25°C unless otherwise noted, VF = 3.5 V Max @ IF = 100 A) (Note 5)
V
I
© 2017 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 07/24/17
TVS Diodes
Surface Mount > 1500W > SZ1SMC5.0AT3G Series
Electrical Characteristics (TA = 25°C unless otherwise noted)
Breakdown Voltage VC @ IPP (Note 8)
Device* Device
Marking
V
RWM
(Note 6)
IR @
VRWM
VBR (V) (Note 7) @ ITVCIPP
Volts µA MIN NOM MAX mA Volts Amps
SZ1SMC5.0AT3G GDE 5.0 1000 6.4 6.7 7. 0 10 9.2 163
SZ1SMC6.0AT3G GDG 6.0 1000 6.67 7.02 7.37 10 10.3 145.6
SZ1SMC6.5AT3G GDK 6.5 500 7.22 7. 6 7.98 10 11. 2 133.9
SZ1SMC7.5AT3G GDP 7. 5 100 8.33 8.77 9.21 112.9 116.3
SZ1SMC8.0AT3G GDR 8.0 50 8.89 9.36 9.83 113.6 110.3
SZ1SMC9.0AT3G GDV 9.0 10 10 10.55 11. 1 115.4 97.4
SZ1SMC10AT3G GDX 10 511. 1 11. 7 12.3 117 88.2
SZ1SMC12AT3G GEE 12 513.3 14 14.7 119.9 75.3
SZ1SMC13AT3G GEG 13 514.4 15.15 15.9 121.5 69.7
SZ1SMC14AT3G GEK 14 515.6 16.4 1 7. 2 123.2 64.7
SZ1SMC15AT3G GEM 15 516.7 1 7. 6 18.5 124.4 61.5
SZ1SMC16AT3G GEP 16 51 7. 8 18.75 19.7 126 57.7
SZ1SMC17AT3G GER 17 518.9 19.9 20.9 127.6 53.3
SZ1SMC18AT3G GET 18 520 21.05 22.1 129.2 51.4
SZ1SMC20AT3G GEV 20 522.2 23.35 24.5 132.4 46.3
SZ1SMC22AT3G GEX 22 524.4 25.65 26.9 135.5 42.2
SZ1SMC24AT3G GEZ 24 526.7 28.1 29.5 138.9 38.6
SZ1SMC26AT3G GFE 26 528.9 30.4 31.9 142.1 35.6
SZ1SMC28AT3G GFG 28 531.1 32.75 34.4 145.4 33
SZ1SMC30AT3G GFK 30 533.3 35.05 36.8 148.4 31
SZ1SMC33AT3G GFM 33 536.7 38.65 40.6 153.3 28.1
SZ1SMC36AT3G GFP 36 540 42.1 44.2 158.1 25.8
SZ1SMC40AT3G GFR 40 544.4 46.75 49.1 164.5 32.2
SZ1SMC43AT3G GFT 43 547.8 50.3 52.8 169.4 21.6
SZ1SMC48AT3G GFX 48 553.3 56.1 58.9 177.4 19.4
SZ1SMC51AT3G GFZ 51 556.7 59.7 62.7 182.4 18.2
SZ1SMC54AT3G GGE 54 560 63.15 66.3 187.1 1 7. 2
SZ1SMC58AT3G GGG 58 564.4 67.8 71.2 193.6 16
SZ1SMC60AT3G GGK 60 566.7 70.2 73.7 196.8 15.5
SZ1SMC64AT3G GGM 64 571.1 74.85 78.6 1103 14.6
SZ1SMC70AT3G GGP 70 577.8 81.9 86 1113 13.3
SZ1SMC75AT3G GGR 75 583.3 87.7 92.1 1121 12.4
SZ1SMC78AT3G GGT 78 586.7 91.25 95.8 1126 11. 4
6. A transient suppressor is normally selected according to the maximum working peak reverse voltage (VRWM), which should be equal to or greater than the DC or continuous
peak operating voltage level.
7. V BR measured at pulse test current IT at an ambient temperature of 25°C.
8. Surge current waveform per Figure 2 and derate per Figure 3 of the General Data − 1500 Watt at the beginning of this group.
© 2017 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 07/24/17
TVS Diodes
Surface Mount > 1500W > SZ1SMC5.0AT3G Series
Figure 1. Pulse Rating Curve
Ratings and Characteristic Curves
Figure 2. Pulse Waveform
Figure 3. Pulse Derating Curve Figure 4. Dynamic Impedance
© 2017 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 07/24/17
TVS Diodes
Surface Mount > 1500W > SZ1SMC5.0AT3G Series
Dimensions
Part Marking System
NOTES
1. DIMENSIONING AND TOLERANCING PER ANSI Y14.5M, 1982.
2. CONTROLLING DIMENSION: INCH.
3. D DIMENSION SHALL BE MEASURED WITHIN DIMENSION P.
4. 403-01 THRU -02 OBSOLETE, NEW STANDARD 403-03.
Soldering Footrpint
Physical Specifications
Case Void-free, transfer-molded, thermosetting
plastic
Polarity Cathode indicated by polarity band
Mounting Position Any
Finish All external surfaces are corrosion
resistant and leads are readily solderable
Leads Modified L−Bend providing more contact
area to bond pads
ORDERING INFORMATION
Device Package Shipping†
SZ1SMCxxAT3G SMC
(Pb−Free)
2,500 /
Tape & Reel
Dim
Inches Millimeters
Min Nom Max Min Nom Max
A0.075 0.084 0.095 1.90 2.13 2.41
A1 0.002 0.004 0.006 0.05 0.10 0.15
b0.115 0.118 0.121 2.92 3.00 3.07
c0.006 0.009 0.012 0.15 0.23 0.30
D0.220 0.230 0.240 5.59 5.84 6.10
E0.260 0.270 0.280 6.60 6.86 7.11
HE0.305 0.313 0.320 7.75 7.94 8 .13
L0.030 0.040 0.050 0.76 1.02 1.27
L1 0.020 REF 0.51 REF
Flow/Wave Soldering (Solder Dipping)
Peak Temperature : 260OC
Dipping Time : 10 seconds
c
L1L A1
A
E
bD
HE
mm
inches
