Microsemi
Scottsdale Division
Page 1
Copyright © 2005
8-09-2005 REV F
WWW.Microsemi .COM
SMAJ5.0 thru SMAJ170CA, e3
SURFACE MOUNT 500 Watt
Transient Voltage Suppressor
SCOTTSDALE DIVISION
DESCRIPTION PACKAGE
This SMAJ5.0-170A series of surface mount 500 W Transient Voltage
Suppressors (TVSs) protects a variety of voltage-sensitive components from
destruction or degradation. The package outline is similar to the DO-214AB or
DO-214AC. It is also available in a unidirectional configuration or as bidirectional
with a C or CA suffix part number as well as RoHS Compliant with an “e3”suffix.
Their response time is virtually instantaneous. As a result, they can be used for
protection from ESD or EFT per IEC61000-4-2 and IEC61000-4-4, or for
inductive switching environments and induced RF protection. They can also
protect from secondary lightning effects per IEC61000-4-5 and class levels
defined herein. Microsemi also offers numerous other TVS products to meet
higher and lower power demands and special applications.
DO-214AB or AC
(SMAJ)
IMPORTANT: For the most current data, consult MICROSEMI’s website: http://www.microsemi.com
FEATURES
APPLIC ATIONS / BENEFITS
• Selections for 5.0 to 170 volts standoff voltages (VWM)
• Suppresses transients up to 500 watts @ 10/1000 µs (see
Figure 1) with fast response
• Optional 100% screening for avionics grade is available
by adding MA prefix to part number for added 100%
temperature cycle -55oC to +125oC (10X) as well as surge
(3X) and 24 hours HTRB with post test VZ & IR (in the
operating direction for unidirectional or both directions for
bidirectional)
• Options for screening in accordance with MIL-PRF-19500
for JAN, JANTX, JANTXV, and JANS are available by
adding MQ, MX, MV, or MSP prefixes respectively to part
numbers.
• Axial-lead equivalent packages for thru-hole mounting
available as P5KE6.8 to P5KE170CA (consult factory for
other surface mount options)
• Moisture classification is Level 1 with no dry pack required
per IPC/JEDEC J-STD-020B
• RoHS Compliant devices available by adding an “e3” suffix
• Economical surface mount
• Available in Unidirectional or as Bidirectional
construction with a C or CA suffix
• Protects sensitive components such as IC’s,
CMOS, Bipolar, BiCMOS, ECL, DTL, T2L, etc.
• Protection from switching transients & induced RF
• Compliant to IEC61000-4-2 and IEC61000-4-4 for
ESD and EFT protection respectively
• Secondary lightning protection per IEC61000-4-5
with 42 Ohms source impedance:
Class 1: SMAJ5.0 to SMAJ100A or CA
Class 2: SMAJ5.0 to SMAJ51A or CA
Class 3: SMAJ5.0 to SMAJ24A or CA
Class 4: SMAJ5.0 to SMAJ12A or CA
• Secondary lightning protection per IEC61000-4-5
with 12 Ohms source impedance:
Class 1: SMAJ5.0 to SMAJ30A or CA
Class 2: SMAJ5.0 to SMAJ16A or CA
MAXIMUM RAT ING S
MECHANICAL AND PACKAGING
• Peak Pulse Power dissipation at 25ºC: 500 watts at
10/1000 μs (also see Fig 1,2, and 3)
• Impulse repetition rate (duty factor): 0.01%
• t
clamping (0 volts to V(BR) min.): < 100 ps theoretical for
unidirectional and < 5 ns for bidirectional
• Operating and Storage temperature: -65ºC to +150ºC
• Thermal resistance: 15 ºC/W junction to lead or 80ºC/W
junction to ambient when mounted on FR4 PC board (1oz
Cu) with recommended footprint (see last page)
• Steady-State Power dissipation: 5 watts at TL = 75oC, or
1.56 watts at TA = 25ºC when mounted on FR4 PC board
with recommended footprint
• Forward Surge Current at 25ºC: 40 amps peak, 8.3 ms
half-sine wave. Maximum voltage of 3.50 V
(unidirectional only)
• Solder temperatures: 260 ºC for 10 s (maximum)
• CASE: Void-free transfer molded thermosetting
epoxy body meeting UL94V-0
• TERMINALS: Gull-wing or C-bend (modified J-
bend) leads Tin-Lead or RoHS compliant annealed
matte-Tin plating solderable per MIL-STD-750,
method 2026
• POLARITY: Cathode indicated by band. No
marking on bi-directional devices
• MARKING: Part number without SMA prefix (e.g.
5.0, 5.0A, 5.0Ae3, 5.0CA, 36A, 36CA, 36CAe3, etc.)
• TAPE & REEL option: Standard per EIA-481-1-A
with 12 mm tape, 750 per 7 inch reel or 2500 per 13
inch reel (add “TR” suffix to part number)
• WEIGHT: 0.064 grams
• See package dimension on last page
SMAJ5.0–170CA, e3
8700 E. Thomas Rd. PO Box 1390, Scottsdale, AZ 85252 USA, (480) 941-6300, Fax: (480) 947-1503
Microsemi
Scottsdale Division
Page 2
Copyright © 2005
8-09-2005 REV F
WWW.Microsemi .COM
SMAJ5.0 thru SMAJ170CA, e3
SURFACE MOUNT 500 Watt
Transient Voltage Suppressor
SCOTTSDALE DIVISION
ELECTRICAL CHARACTERISTICS @ 5oC
TYPE
NUMBER
REVERSE
STANDOFF
VOLTAGE
VWM
Volts
MINIMUM
BREAKDOWN
VOLTAGE
VBR
MIN @ I(BR)
Volts
BREAKDOWN
CURRENT
I(BR)
mA
MAXIMUM
CLAMPING
VOLTAGE
@ IPP
VC
Volts
PEAK
PULSE
CURRENT
(See Fig. 2)
IPP
Amps
MAXIMUM
STANDBY
CURRENT
@ VWM
ID
μA
SMAJ5.0
SMAJ5.0A
SMAJ6.0
SMAJ6.0A
5.0
5.0
6.0
6.0
6.40
6.40
6.67
6.67
10
10
10
10
9.6
9.2
11.4
10.3
52
54.3
43.9
48.5
800
800
800
800
SMAJ6.5
SMAJ6.5A
SMAJ7.0
SMAJ7.0A
6.5
6.5
7.0
7.0
7.22
7.22
7.78
7.78
10
10
10
10
12.3
11.2
13.3
12.0
40.7
44.7
37.8
41.7
500
500
200
200
SMAJ7.5
SMAJ7.5A
SMAJ8.0
SMAJ8.0A
7.5
7.5
8.0
8.0
8.33
8.33
8.89
8.89
1
1
1
1
14.3
12.9
15.0
13.6
35.0
38.8
33.3
36.7
100
100
50
50
SMAJ8.5
SMAJ8.5A
SMAJ9.0
SMAJ9.0A
8.5
8.5
9.0
9.0
9.44
9.44
10.0
10.0
1
1
1
1
15.9
14.4
16.9
15.4
31.4
34.7
29.5
32.6
10
10
5
5
SMAJ10
SMAJ10A
SMAJ11
SMAJ11A
10
10
11
11
11.1
11.1
12.2
12.2
1
1
1
1
18.8
17.0
20.1
18.2
26.6
29.4
24.9
27.4
1
1
1
1
SMAJ12
SMAJ12A
SMAJ13
SMAJ13A
12
12
13
13
13.3
13.3
14.4
14.4
1
1
1
1
22.0
19.9
23.8
21.5
22.7
25.1
21.0
23.2
1
1
1
1
SMAJ14
SMAJ14A
SMAJ15
SMAJ15A
14
14
15
15
15.6
15.6
16.7
16.7
1
1
1
1
25.8
23.2
26.9
24.4
19.4
21.5
18.8
20.6
1
1
1
1
SMAJ16
SMAJ16A
SMAJ17
SMAJ17A
16
16
17
17
17.8
17.8
18.9
18.9
1
1
1
1
28.8
26.0
30.5
27.6
17.6
19.2
16.4
18.1
1
1
1
1
SMAJ18
SMAJ18A
SMAJ20
SMAJ20A
18
18
20
20
20.0
20.0
22.2
22.2
1
1
1
1
32.2
29.2
35.8
32.4
15.5
17.2
13.9
15.4
1
1
1
1
SMAJ22
SMAJ22A
SMAJ24
SMAJ24A
22
22
24
24
24.4
24.4
26.7
26.7
1
1
1
1
39.4
35.5
43.0
38.9
12.7
14.1
11.6
12.8
1
1
1
1
SMAJ26
SMAJ26A
SMAJ28
SMAJ28A
26
26
28
28
28.9
28.9
31.1
31.1
1
1
1
1
46.6
42.1
50.0
45.4
10.7
11.9
9.9
11.0
1
1
1
1
SMAJ30
SMAJ30A
SMAJ33
SMAJ33A
30
30
33
33
33.3
33.3
36.7
36.7
1
1
1
1
53.5
48.4
59.0
53.3
9.3
10.3
8.5
9.4
1
1
1
1
SMAJ36
SMAJ36A
SMAJ40
SMAJ40A
36
36
40
40
40.0
40.0
44.4
44.4
1
1
1
1
64.3
58.1
71.4
64.5
9.8
8.6
7.0
7.8
1
1
1
1
SMAJ5.0–170CA, e3
8700 E. Thomas Rd. PO Box 1390, Scottsdale, AZ 85252 USA, (480) 941-6300, Fax: (480) 947-1503
Microsemi
Scottsdale Division
Page 3
Copyright © 2005
8-09-2005 REV F
WWW.Microsemi .COM
SMAJ5.0 thru SMAJ170CA, e3
SURFACE MOUNT 500 Watt
Transient Voltage Suppressor
SCOTTSDALE DIVISION
TYPE
NUMBER
REVERSE
STANDOFF
VOLTAGE
VWM
Volts
MINIMUM
BREAKDOWN
VOLTAGE
VBR
MIN @ I(BR)
Volts
BREAKDOWN
CURRENT
I(BR)
mA
MAXIMUM
CLAMPING
VOLTAGE
@ IPP
VC
Volts
PEAK
PULSE
CURRENT
(See Fig. 2)
IPP
Amps
MAXIMUM
STANDBY
CURRENT
@ VWM
ID
μA
SMAJ43
SMAJ43A
SMAJ45
SMAJ45A
43
43
45
45
47.8
47.8
50.0
50.0
1
1
1
1
76.7
69.4
80.3
72.7
6.5
7.2
6.2
6.9
1
1
1
1
SMAJ48
SMAJ48A
SMAJ51
SMAJ51A
48
48
51
51
53.3
53.3
56.7
56.7
1
1
1
1
85.5
77.4
91.1
82.4
5.8
6.5
5.5
6.1
1
1
1
1
SMAJ54
SMAJ54A
SMAJ58
SMAJ58A
54
54
58
58
60.0
60.0
64.4
64.4
1
1
1
1
96.3
87.1
103.0
93.6
5.2
5.7
4.9
5.3
1
1
1
1
SMAJ60
SMAJ60A
SMAJ64
SMAJ64A
60
60
64
64
66.7
66.7
71.1
71.1
1
1
1
1
107.0
96.8
114.0
103.0
4.7
5.2
4.4
4.9
1
1
1
1
SMAJ70
SMAJ70A
SMAJ75
SMAJ75A
70
70
75
75
77.8
77.8
83.3
83.3
1
1
1
1
125
113
134
121
4.0
4.4
3.7
4.1
1
1
1
1
SMAJ78
SMAJ78A
SMAJ85
SMAJ85A
78
78
85
85
86.7
86.7
94.4
94.4
1
1
1
1
139
126
151
137
3.6
4.0
3.3
3.6
1
1
1
1
SMAJ90
SMAJ90A
SMAJ100
SMAJ100A
90
90
100
100
100
100
111
111
1
1
1
1
160
146
179
162
3.1
3.4
2.8
3.1
1
1
1
1
SMAJ110
SMAJ110A
SMAJ120
SMAJ120A
110
110
120
120
122
122
133
133
1
1
1
1
196
177
214
193
2.6
2.8
2.3
2.6
1
1
1
1
SMAJ130
SMAJ130A
SMAJ150
SMAJ150A
130
130
150
150
144
144
167
167
1
1
1
1
231
209
268
243
2.2
2.4
1.9
2.1
1
1
1
1
SMAJ160
SMAJ160A
SMAJ170
SMAJ170A
160
160
170
170
178
178
189
189
1
1
1
1
287
259
304
275
1.7
1.9
1.6
1.8
1
1
1
1
• For Bidirectional device types indicate a C or CA suffix after the part number. (i.e.: SMAJ170CA or SMAJ170C). Bidirectional
capacitance is half that shown in figure 4 at zero volts.
SMAJ5.0–170CA, e3
• Microsemi Corp’s SMA series (500 W) surface mountable packages are designed specifically for transient voltage suppression. The
wide leads assure a large surface contact for good heat dissipation, and a low resistance path for surge current flow to ground. These
high speed transient voltage suppressors can be used to effectively protect sensitive components such as integrated circuits and MOS
devices.
SYMBOLS & DEFINITI ONS
Symbol Definition Symbol Definition
VWM Working Peak (Standoff) Voltage IPP Peak Pulse Current
PPP Peak Pulse Power VCClamping Voltage
V(BR) Breakdown Voltage I(BR) Breakdown Current for V(BR)
ID Standby Current
8700 E. Thomas Rd. PO Box 1390, Scottsdale, AZ 85252 USA, (480) 941-6300, Fax: (480) 947-1503
Microsemi
Scottsdale Division
Page 4
Copyright © 2005
8-09-2005 REV F
WWW.Microsemi .COM
SMAJ5.0 thru SMAJ170CA, e3
SURFACE MOUNT 500 Watt
Transient Voltage Suppressor
SCOTTSDALE DIVISION
GRAPHS
tw Microseconds
FIGURE 1
Peak Pulse Power (PPP) – Kilowatts versus
Pulse Width (tw) - Microseconds
C – Capacitance - Picofarads
SMAJ5.0–170CA, e3
FIGURE 2 Lead or Ambient Temperature oC V(BR) - Breakdown Voltage – Volts
Peak Pulse Power (PPP) or continuous
Power in Percent of 25
o
C
Rating
Pulse Waveform for Exponential Surge FIGURE 3 FIGURE 4
Derating Curve Typical Capacitance vs. Breakdown Voltage
8700 E. Thomas Rd. PO Box 1390, Scottsdale, AZ 85252 USA, (480) 941-6300, Fax: (480) 947-1503
Microsemi
Scottsdale Division
Page 5
Copyright © 2005
8-09-2005 REV F
WWW.Microsemi .COM
SMAJ5.0 thru SMAJ170CA, e3
SURFACE MOUNT 500 Watt
Transient Voltage Suppressor
SCOTTSDALE DIVISION
PACKAGE DIMENSIO NS & PAD LAYOU T
SMAJ5.0–170CA, e3
PAD LAYOUT
INCHES MM
DIM MIN MAX MIN MAX
NOTE 1: THIS MAXIMUM DIMENSION IS LARGER THAN THE
STANDARD JEDEC CALL OUT. STANDARD JEDEC
IS .105 INCHES OR 2.66 MM.
NOTE
A .052 .103 1.32 2.62
B .160 .180 3.99 4.50
C .100 .110 2.57 2.79
D .194 .216 4.93 5.48
E .078 .120 1.98 3.05 1
F .030 .060 .76 1.52
G - .02 - .51 INCHES mm
A .245 6.22
B .075 1.90
C .103 2.62
8700 E. Thomas Rd. PO Box 1390, Scottsdale, AZ 85252 USA, (480) 941-6300, Fax: (480) 947-1503
