Document
SZ1.5SMC Series
Surface Mount > 1500W
TVS Diodes Datasheet
RoHS
Pb e3
Description
The SZ1.5SMC 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 SZ1.5SMC series is supplied in the exclusive, cost-effective, highly reliable Littelfuse 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.
Additional Information
Resources Agency
Accessories
Samples
Agency Approvals
Agency File Number E128662
Maximum Ratings and Thermal Characteristics
Parameter
Symbol Value Unit
Peak Power Dissipation (Note 1) @ TL = 25°C, Pulse Width = 1 ms DC Power Dissipation @ TL = 75°C Measured Zero Lead Length (Note 2) Derate Above 75°C Thermal Resistance from Junction−to−Lead
PPK 1500 W
PD 4.0 W 54.6 mW/°C
RƟJL 18.3 °C/W
DC Power Dissipation (Note 3) @ TA = 25°C Derate Above 25°C Thermal Resistance from Junction–to– Ambient
PD 0.75 W 6.1 mW/°C
RƟJA 75 °C/W
Forward Surge Current (Note 4) @ TA = 25°C IFSM 200 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 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.
Features & Benefits
■ Zener Transient Overvoltage Suppressors
■ Working Peak Reverse Voltage Range − 5.8 V to 77.8 V
■ Standard Zener Breakdown Voltage Range − 6.45 V to 95.5V
■ Peak Power − 1500 W @ 1 ms
■ ESD protection of data lines in accordance with IEC 61000-4-2 30kV(Air), 30kV (Contact)
■ ESD Rating of Class 3 (> 16 KV) per Human Body Model
■ Maximum Clamp Voltage @ Peak Pulse Current
■ Low Leakage < 5 µA Above 10 V
■ VBR @TJ = VBR@25°C x (1+αT x (TJ - 25)) (αT: Temperature Coefficient)
■ Recognized to UL 497B as an Isolated Loop Circuit Protector
■ 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
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Cathode
Uni-directional
Anode
© 2023 Littelfuse, Inc.
1
Specifications are subject to change without notice.
Revised: GD. 07/18/23
SZ1.5SMC Series
Surface Mount > 1500W
TVS Diodes Datasheet
I-V Curve Characteristics (TA = 25°C unless otherwise noted, VF = 3.5 V Max @ IF = 100 A) (Note 5)
For Uni-directional
I
Symbol
Parameter
IPP
Maximum Reverse Peak Pulse Current
VC
Clamping Voltage @ IPP
VRWM
Working Peak Reverse Voltage
IR
Maximum Reverse Leakage Current @ VRWM
V
VBR
Breakdown Voltage @ IT
IT
Test Current
IF
Forward Current
VF
Forward Voltage @ IF
Note: 5. 1/2 sine wave (or equivalent square wave), PW = 8.3 ms, non−repetitive duty cycle.
Device
Device Marking
SZ1.5SMC6.8AT3G SZ1.5SMC7.5AT3G SZ1.5SMC10AT3G SZ1.5SMC12AT3G SZ1.5SMC13AT3G SZ1.5SMC15AT3G SZ1.5SMC16AT3G SZ1.5SMC18AT3G SZ1.5SMC20AT3G SZ1.5SMC22AT3G SZ1.5SMC24AT3G SZ1.5SMC27AT3G SZ1.5SMC30AT3G SZ1.5SMC33AT3G SZ1.5SMC36AT3G SZ1.5SMC39AT3G SZ1.5SMC43AT3G SZ1.5SMC47AT3G SZ1.5SMC51AT3G SZ1.5SMC56AT3G SZ1.5SMC62AT3G SZ1.5SMC68AT3G SZ1.5SMC75AT3G SZ1.5SMC82AT3G SZ1.5SMC91AT3G
6V8A 7V5A 10A 12A 13A 15A 16A 18A 20A 22A 24A 27A 30A 33A 36A 39A 43A 47A 51A 56A 62A 68A 75A 82A 91A
Electrical Characteristics (TA = 25°C unless otherwise noted)
VRWM
(Note 6)
Volts
IR @ VRWM µA
Min
Breakdown Voltage
VBR (V) (Note 7) Nom
Max
@ IT mA
5.8
1000
6.45
6.8
7.14
10
6.4
500
7.13
7.5
7.88
10
8.55
10
9.5
10
10.5
1
10.2
5
11.4
12
12.6
1
11.1
5
12.4
13
13.7
1
12.8
5
14.3
15
15.8
1
13.6
5
15.2
16
16.8
1
15.3
5
17.1
18
18.9
1
17.1
5
19
20
21
1
18.8
5
20.9
22
23.1
1
20.5
5
22.8
24
25.2
1
23.1
5
25.7
27
28.4
1
25.6
5
28.5
30
31.5
1
28.2
5
31.4
33
34.7
1
30.8
5
34.2
36
37.8
1
33.3
5
37.1
39
41
1
36.8
5
40.9
43
45.2
1
40.2
5
44.7
47
49.4
1
43.6
5
48.5
51
53.6
1
47.8
5
53.2
56
58.8
1
53
5
58.9
62
65.1
1
58.1
5
64.6
68
71.4
1
64.1
5
71.3
75
78.8
1
70.1
5
77.9
82
86.1
1
77.8
5
86.5
91
95.5
1
VC @ IPP (Note 8)
VC
IPP
Volts
Amps
10.5
143
11.3
132
14.5
103
16.7
90
18.2
82
21.2
71
22.5
67
25.2
59.5
27.7
54
30.6
49
33.2
45
.