TVS Diodes
Surface Mount > 1500W > 1.5SMCxxAT3G
OBSOLETE/EOL
1.5SMCxxAT3G
Pb
DATE
June/30/2018
PCN/ECN#
LFPCN41246
REPLACED BY
1.5SMC Series
Description
The 1.5SMCxxAT3G 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. This 1.5SMCxxAT3G series is provided in an SMC
package ideally suited for small form factor requirements
found in communication , automotive, process control,
medical equipment and many other industrial and
consumer applications.
Features
• Working Peak Reverse Voltage Range − 5.8 V to 78 V
• Nominal Breakdown Voltage Range − 6.8 V to 91V
Unit
W
Maximum Ratings and Thermal Characteristics
Parameter
Peak Power Dissipation (Note 1) @ T
L
=
25°C, Pulse Width = 1 ms
DC Power Dissipation @ T
L
= 75°C
Measured Zero Lead Length (Note 2)
Derate Above 75°C
Thermal Resistance from Junction−to−
Lead
Symbol
P
PK
Value
1500
• Peak Power − 1500 W @ 1 ms
• ESD Rating of Class 3 (> 16 kV) per Human Body Model
• Low Leakage < 5 µA Above 10 V
PD
4.0
54.6
W
mW/°C
°C/W
• Maximum Temperature Coefficient Specified
• Response Time is Typically < 1 ns
• Pb−Free Packages are
Bi-directional
Available
R
JL
18.3
DC Power Dissipation (Note 3) @ T
A
=
25
°
C Derate Above 25
°
C
Thermal Resistance from Junction–
to– Ambient
P
D
0.75
6.1
W
mW/°C
°C/W
Functional Diagram
R
θJA
165
C
Cathode
Anode
Forward Surge Current (Note 4)
@ T
A
= 25°C
Operating and Storage
Temperature Range
I
FSM
200
A
T
J,
T
stg
-65 to
+150
°C
Additional Information
Uni-directional
Stresses exceeding Maximum Ratings may damage the component. 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 component 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.
Datasheet
Resources
Samples
© 2018 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 02/23/18
TVS Diodes
Surface Mount > 1500W > 1.5SMCxxAT3G
I-V Curve Characteristics
(T
A
= 25°C unless otherwise noted, V
F
= 3.5 V Max @ I
F
= 100 A) (Note 5)
I
Symbol
I
PP
V
C
V
RWM
V
I
R
V
BR
I
T
I
F
V
F
Parameter
Maximum Reverse Peak Pulse Current
Clamping Voltage @ I
PP
Working Peak Reverse Voltage
Maximum Reverse Leakage Current @ V
RWM
Breakdown Voltage @ I
T
Test Current
Forward Current
Forward Voltage @ I
F
5. 1/2 sine wave (or equivalent square wave), PW = 8.3 ms, non−repetitive duty cycle.
© 2018 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 02/23/18
TVS Diodes
Surface Mount > 1500W > 1.5SMCxxAT3G
Electrical Characteristics
(T
A
= 25°C unless otherwise noted)
V
RWM
(Note 6)
Component*
Component
Marking
I
R
@
V
RWM
µA
1000
500
200
10
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
Breakdown Voltage
V
BR
(V) (Note 6 & 7)
MIN
6.45
7
.13
7
.79
9.5
11.4
12.4
14.3
15.2
17
.1
19
20.9
22.8
25.7
28.5
31.4
34.2
37
.1
40.9
44.7
48.5
53.2
58.9
64.6
71.3
77
.9
86.5
NOM
6.8
7
.5
8.2
10
12
13
15
16
18
20
22
24
27
30
33
36
39
43
47
51
56
62
68
75
82
91
MAX
7
.14
7
.88
8.61
10.5
12.6
13.7
15.8
16.8
18.9
21
23.1
25.2
28.4
31.5
34.7
37
.8
41
45.2
49.4
53.6
58.8
65.1
71.4
78.8
86.1
95.5
@ I
T
mA
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
V
C
@ I
PP
(Note 8)
V
C
Volts
10.5
11.3
12.1
14.5
16.7
18.2
21.2
22.5
25.2
27
.7
30.6
33.2
37
.5
41.4
45.7
49.9
53.9
59.3
64.8
70.1
77
85
92
103
113
125
I
PP
Amps
143
132
124
103
90
82
71
67
59.5
54
49
45
40
36
33
30
28
25.3
23.2
21.4
19.5
17
.7
16.3
14.6
13.3
12
MV BR
%/ C
0.057
0.061
0.065
0.073
0.078
0.081
0.084
0.086
0.088
0.09
0.092
0.094
0.096
0.097
0.098
0.099
0.1
0.101
0.101
0.102
0.103
0.104
0.104
0.105
0.105
0.106
Volts
1.5SMC6.8AT3G
1.5SMC7
.5AT3G
1.5SMC8.2AT3G
1.5SMC10AT3G
1.5SMC12AT3G
1.5SMC13AT3G
1.5SMC15AT3G
1.5SMC16AT3G
1.5SMC18AT3G
1.5SMC20AT3G
1.5SMC22AT3G
1.5SMC24AT3G
1.5SMC27AT3G
1.5SMC30AT3G
1.5SMC33AT3G
1.5SMC36AT3G
1.5SMC39AT3G
1.5SMC43AT3G
1.5SMC47AT3G
1.5SMC51AT3G
1.5SMC56AT3G
1.5SMC62AT3G
1.5SMC68AT3G
1.5SMC75AT3G
1.5SMC82AT3G
1.5SMC91AT3G
6V8A
7V5A
8V2A
10A
12A
13A
15A
16A
18A
20A
22A
24A
27A
30A
33A
36A
39A
43A
47A
51A
56A
62A
68A
75A
82A
91A
5.8
6.4
7
.02
8.55
10.2
11.1
12.8
13.6
15.3
17
.1
18.8
20.5
23.1
25.6
28.2
30.8
33.3
36.8
40.2
43.6
47
.8
53
58.1
64.1
70.1
77
.8
6. A transient suppressor is normally selected according to the maximum working peak reverse voltage (V
RWM
), which should be equal
to or greater than the DC or continuous peak operating voltage level.
7 V
BR
measured at pulse test current I
T
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.
© 2018 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 02/23/18
TVS Diodes
Surface Mount > 1500W > 1.5SMCxxAT3G
Ratings and Characteristic Curves
Figure 1. Pulse Rating Curve
Figure 2. Pulse Waveform
PULSE WIDTH (t ) IS DEFINED AS
P
THAT POINT WHERE THE PEAK
CURRENT DECAYS TO 50% OF
I
PP
.
t
≤
10 s
100
VALUE (%)
PEAK VALUE - I
PP
I
HALF VALUE -
PP
2
50
t
P
0
Figure 3. Pulse Derating Curve
160
PEAK PULSE DERATING IN % OF
PEAK POWER OR CURRENT @ TA = 25 C
Figure 4. Dynamic Impedance
°
140
120
100
80
60
40
20
0
0
25
50
75
100
125
150
°
© 2018 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 02/23/18
TVS Diodes
Surface Mount > 1500W > 1.5SMCxxAT3G
Dimensions
H
E
E
Soldering Footrpint
bD
D
mm
inches
A
L
L1
c
A1
ORDERING INFORMATION
Component
Package
SMC
(Pb−Free)
Shipping
2,500 /
Tape & Reel
Dim
A
A1
b
Inches
Min
0.075
0.002
0.115
0.006
0.220
0.260
0.305
0.030
Nom
Millimeters
Max
0.095
0.006
0.121
0.012
0.240
0.280
0.320
0.050
Min
1.90
0.05
2.92
0.15
5.59
6.60
7.75
0.76
Nom
Max
2.41
0.15
3.07
0.30
6.10
7.11
8.13
1.27
1SMCxxAT3G
0.084
0.004
0.118
0.009
0.230
0.270
0.313
0.040
0.020 REF
2.13
0.10
3.00
0.23
5.84
6.86
7
.94
1.02
0.51 REF
c
D
E
H
E
L
L1
NOTES
Flow/Wave Soldering (Solder Dipping)
Peak Temperature :
Dipping Time :
260
O
C
10 seconds
Physical Specifications
Case
Polarity
Mounting Position
Finish
Leads
Void-free, transfer-molded, thermosetting
plastic
Cathode indicated by polarity band
Any
All external surfaces are corrosion
resistant and leads are readily solderable
Modified L−Bend providing more contact
area to bond pads
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.
Part Marking System
Specific Component Code
Disclaimer Notice
-
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 may not be used in, all applications. Read complete
Disclaimer Notice at:
www.littelfuse.com/disclaimer-electronics.
© 2018 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 02/23/18
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