Semiconductor Components Industries, LLC, 2004
April, 2004 - Rev. 6
1
Publication Order Number:
1SMA5.0AT3/D
1SMA5.0AT3 Series
400 Watt Peak Power Zener
Transient Voltage Suppressors
Unidirectional*
The SMA 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 SMA series is supplied in
ON Semiconductor's exclusive, cost-effective, highly reliable
Surmetic
t 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.
Specification Features
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 - 400 W @ 1 ms
ESD Rating of Class 3 (> 16 KV) per Human Body Model
Response Time is Typically < 1 ns
Flat Handling Surface for Accurate Placement
Package Design for Top Slide or Bottom Circuit Board Mounting
Low Profile Package
Pb-Free Packages are Available
Mechanical Characteristics
CASE:
Void-free, transfer-molded plastic
FINISH:
All external surfaces are corrosion resistant and leads are
readily solderable
MAXIMUM CASE TEMPERATURE FOR SOLDERING PURPOSES:
260
C for 10 Seconds
POLARITY:
Cathode indicated by molded polarity notch or polarity
band
MOUNTING POSITION:
Any
PLASTIC SURFACE MOUNT
ZENER OVERVOLTAGE
TRANSIENT SUPPRESSORS
5.0 - 78 V, 400 W PEAK POWER
Device
Package
Shipping
ORDERING INFORMATION
1SMAxxAT3
SMA
5000/Tape & Reel
SMA
CASE 403D
PLASTIC
xx
= Specific Device Code
=
(See Table on Page
3)
LL
= Assembly Location
Y
= Year
WW
= Work Week
xx
LLYWW
MARKING DIAGRAM
*Please see 1SMA10CAT3 to 1SMA78CAT3 for
Bidirectional devices.
CATHODE
ANODE
http://onsemi.com
1SMAxxAT3G
SMA
(Pb-Free)
5000/Tape & Reel
Individual devices are listed on page 3 of this data sheet.
For information on tape and reel specifications,
including part orientation and tape sizes, please
refer to our Tape and Reel Packaging Specifications
Brochure, BRD8011/D.
1SMA5.0AT3 Series
http://onsemi.com
2
MAXIMUM RATINGS
Rating
Symbol
Value
Unit
Peak Power Dissipation (Note 1) @ T
L
= 25
C, Pulse Width = 1 ms
P
PK
400
W
DC Power Dissipation @ T
L
= 75
C
Measured Zero Lead Length (Note 2)
Derate Above 75
C
Thermal Resistance from Junction to Lead
P
D
R
q
JL
1.5
20
50
W
mW/
C
C/W
DC Power Dissipation (Note 3) @ T
A
= 25
C
Derate Above 25
C
Thermal Resistance from Junction to Ambient
P
D
R
q
JA
0.5
4.0
250
W
mW/
C
C/W
Forward Surge Current (Note 4) @ T
A
= 25
C
I
FSM
40
A
Operating and Storage Temperature Range
T
J
, T
stg
-65 to +150
C
Maximum ratings are those values beyond which device damage can occur. Maximum ratings applied to the device are individual stress limit
values (not normal operating conditions) and are not valid simultaneously. If these limits are exceeded, device functional operation is not implied,
damage may occur and reliability may be affected.
1. 10 X 1000
m
s, non-repetitive
2. 1
square copper pad, FR-4 board
3. FR-4 board, using ON Semiconductor minimum recommended footprint, as shown in 403B case outline dimensions spec.
4. 1/2 sine wave (or equivalent square wave), PW = 8.3 ms, duty cycle = 4 pulses per minute maximum.
Uni-Directional TVS
I
PP
I
F
V
I
I
R
I
T
V
RWM
V
C
V
BR
V
F
ELECTRICAL CHARACTERISTICS
(T
A
= 25
C unless otherwise noted, V
F
= 3.5 V Max. @
I
F
= 30 A for all types) (Note 5)
Symbol
Parameter
I
PP
Maximum Reverse Peak Pulse Current
V
C
Clamping Voltage @ I
PP
V
RWM
Working Peak Reverse Voltage
I
R
Maximum Reverse Leakage Current @ V
RWM
V
BR
Breakdown Voltage @ I
T
I
T
Test Current
I
F
Forward Current
V
F
Forward Voltage @ I
F
5. 1/2 sine wave or equivalent, PW = 8.3 ms, non-repetitive
duty cycle.
1SMA5.0AT3 Series
http://onsemi.com
3
ELECTRICAL CHARACTERISTICS
V
RWM
Breakdown Voltage
V
C
@ I
PP
(Note 8)
Device
V
RWM
(Note 6)
I
R
@ V
RWM
V
BR
(Volts) (Note 7)
@ I
T
V
C
I
PP
Device
Device
Marking
Volts
m
A
Min
Nom
Max
mA
Volts
Amps
1SMA5.0AT3
QE
5.0
400
6.4
6.7
7.0
10
9.2
43.5
1SMA6.0AT3
QG
6.0
400
6.67
7.02
7.37
10
10.3
38.8
1SMA6.5AT3
QK
6.5
250
7.22
7.6
7.98
10
11.2
35.7
1SMA7.0AT3
QM
7.0
250
7.78
8.19
8.6
10
12.0
33.3
1SMA7.5AT3
QP
7.5
50
8.33
8.77
9.21
1
12.9
31.0
1SMA8.0AT3
QR
8.0
25
8.89
9.36
9.83
1
13.6
29.4
1SMA8.5AT3
QT
8.5
5.0
9.44
9.92
10.4
1
14.4
27.8
1SMA9.0AT3
QV
9.0
2.5
10
10.55
11.1
1
15.4
26.0
1SMA10AT3
QX
10
2.5
11.1
11.7
12.3
1
17.0
23.5
1SMA11AT3
QZ
11
2.5
12.2
12.85
13.5
1
18.2
22.0
1SMA12AT3
RE
12
2.5
13.3
14.0
14.7
1
19.9
20.1
1SMA13AT3
RG
13
2.5
14.4
15.15
15.9
1
21.5
18.6
1SMA14AT3
RK
14
2.5
15.6
16.4
17.2
1
23.2
17.2
1SMA15AT3
RM
15
2.5
16.7
17.6
18.5
1
24.4
16.4
1SMA16AT3, G*
RP
16
2.5
17.8
18.75
19.7
1
26.0
15.4
1SMA17AT3
RR
17
2.5
18.9
19.9
20.9
1
27.6
14.5
1SMA18AT3, G*
RT
18
2.5
20
21.05
22.1
1
29.2
13.7
1SMA20AT3
RV
20
2.5
22.2
23.35
24.5
1
32.4
12.3
1SMA22AT3
RX
22
2.5
24.4
25.65
26.9
1
35.5
11.3
1SMA24AT3
RZ
24
2.5
26.7
28.1
29.5
1
38.9
10.3
1SMA26AT3
SE
26
2.5
28.9
30.4
31.9
1
42.1
9.5
1SMA28AT3
SG
28
2.5
31.1
32.75
34.4
1
45.4
8.8
1SMA30AT3
SK
30
2.5
33.3
35.05
36.8
1
48.4
8.3
1SMA33AT3
SM
33
2.5
36.7
38.65
40.6
1
53.3
7.5
1SMA36AT3
SP
36
2.5
40
42.1
44.2
1
58.1
6.9
1SMA40AT3
SR
40
2.5
44.4
46.75
49.1
1
64.5
6.2
1SMA43AT3
ST
43
2.5
47.8
50.3
52.8
1
69.4
5.8
1SMA45AT3
SV
45
2.5
50
52.65
55.3
1
72.2
5.5
1SMA48AT3
SX
48
2.5
53.3
56.1
58.9
1
77.4
5.2
1SMA51AT3
SZ
51
2.5
56.7
59.7
62.7
1
82.4
4.9
1SMA54AT3
TE
54
2.5
60
63.15
66.3
1
87.1
4.6
1SMA58AT3
TG
58
2.5
64.4
67.8
71.5
1
93.6
4.3
1SMA60AT3
TK
60
2.5
66.7
70.2
73.7
1
96.8
4.1
1SMA64AT3
TM
64
2.5
71.1
74.85
78.6
1
103
3.9
1SMA70AT3
TP
70
2.5
77.8
81.9
86.0
1
113
3.5
1SMA75AT3
TR
75
2.5
83.3
87.7
92.1
1
121
3.3
1SMA78AT3
TS
78
2.5
86.7
91.25
95.8
1
126
3.2
6. A transient suppressor is normally selected according to the 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
* The "G" suffix indicates Pb-Free package available.
1SMA5.0AT3 Series
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4
RATING AND TYPICAL CHARACTERISTIC CURVES
T
A
= 25
C
PW (I
D
) IS DEFINED AS THE
POINT WHERE THE PEAK CURRENT
DECAYS TO 50% OF I
pp
.
10
ms
PEAK VALUE
I
ppm
HALF VALUE - I
pp
/2
10/1000
ms WAVEFORM
AS DEFINED BY R.E.A.
t
d
120
100
80
60
40
0
0
1
2
3
4
I ppm
, PEAK PULSE CURRENT
(%)
20
5
10
-4
100
0.1
1
10
10
1
0.1
t
P
, PULSE WIDTH (ms)
P
pk
NONREPETITIVE
PULSE WAVEFORM
SHOWN IN FIGURE 2.
T
A
= 25
C
, PEAK POWER (kW)
0.01
0.001
t, TIME (ms)
120
100
80
60
40
0
0
40
80
120
160
T
A
, AMBIENT TEMPERATURE (
C)
PEAK PULSE DERA
TING IN % OF
20
200
PEAK POWER OR CURRENT
10 x 1000 WAVEFORM
AS DEFINED BY R.E.A.
10,000
1,000
100
10
1
2
5
10
20
50
100 200
V
(BR)
, BREAKDOWN VOLTAGE (VOLTS)
MEASURED AT
ZERO BIAS
MEASURED AT
STAND-OFF
VOLTAGE, V
WM
T
J
= 25
C
f = 1 MHz
V
sig
= 50 mV
p-p
0
6
T, TEMPERATURE (
C)
50
100
150
P
D
, MAXIMUM POWER DISSIP
A
TION (W
A
TTS)
5
4
3
2
0
1
Figure 1. Pulse Rating Curve
Figure 2. Pulse Waveform
Figure 3. Pulse Derating Curve
Figure 4. Typical Junction Capacitance
Figure 5. Steady State Power Derating
C, CAP
ACIT
ANCE (pF)
@ T
L
= 75
C
P
D
= 1.5 W
@ T
A
= 25
C
P
D
= 0.5 W
25
75
125
1SMA5.0AT3 Series
http://onsemi.com
5
SMA
CASE 403D-02
ISSUE A
S
A
D
B
K
J
C
H
DIM
MIN
MAX
MIN
MAX
MILLIMETERS
INCHES
A
0.160
0.180
4.06
4.57
B
0.090
0.115
2.29
2.92
C
0.075
0.095
1.91
2.41
D
0.050
0.064
1.27
1.63
H
0.002
0.006
0.05
0.15
J
0.006
0.016
0.15
0.41
K
0.030
0.060
0.76
1.52
S
0.190
0.220
4.83
5.59
POLARITY INDICATOR OPTIONAL
AS NEEDED
NOTES:
1. DIMENSIONING AND TOLERANCING PER ANSI
Y14.5M, 1982.
2. CONTROLLING DIMENSION: INCH.
3. 403D-01 OBSOLETE, NEW STANDARD IS
403D-02.
4.0
0.157
2.0
0.0787
2.0
0.0787
mm
inches
SCALE 8:1
*For additional information on our Pb-Free strategy and soldering
details, please download the ON Semiconductor Soldering and
Mounting Techniques Reference Manual, SOLDERRM/D.
SOLDERING FOOTPRINT*
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