Microsemi
Scottsdale Division
Page 3
Copyright
2009
MSC0270A, REV L, 5-24-2009
WWW
.Microse
m
i
.CO
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SMAJ5.0 thru SMAJ170CA, e3
SURFACE MOUNT 500 Watt
Transient Voltage Suppressor
S C O T TS DALE 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
45
47.8
50.0
1
76.7
69.4
80.3
72.7
6.5
7.2
6.2
6.9
1
SMAJ48
SMAJ48A
SMAJ51
SMAJ51A
48
51
53.3
56.7
1
85.5
77.4
91.1
82.4
5.8
6.5
5.5
6.1
1
SMAJ54
SMAJ54A
SMAJ58
SMAJ58A
54
58
60.0
64.4
1
96.3
87.1
103.0
93.6
5.2
5.7
4.9
5.3
1
SMAJ60
SMAJ60A
SMAJ64
SMAJ64A
60
64
66.7
71.1
1
107.0
96.8
114.0
103.0
4.7
5.2
4.4
4.9
1
SMAJ70
SMAJ70A
SMAJ75
SMAJ75A
70
75
77.8
83.3
1
125
113
134
121
4.0
4.4
3.7
4.1
1
SMAJ78
SMAJ78A
SMAJ85
SMAJ85A
78
85
86.7
94.4
1
139
126
151
137
3.6
4.0
3.3
3.6
1
SMAJ90
SMAJ90A
SMAJ100
SMAJ100A
90
100
111
1
160
146
179
162
3.1
3.4
2.8
3.1
1
SMAJ110
SMAJ110A
SMAJ120
SMAJ120A
110
120
122
133
1
196
177
214
193
2.6
2.8
2.3
2.6
1
SMAJ130
SMAJ130A
SMAJ150
SMAJ150A
130
150
144
167
1
231
209
268
243
2.2
2.4
1.9
2.1
1
SMAJ160
SMAJ160A
SMAJ170
SMAJ170A
160
170
178
189
1
287
259
304
275
1.7
1.9
1.6
1.8
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.
SMAJ5.0–1
70CA,
e
3
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 & DEFINITIONS
Symbol
Definition
Symbol
Definition
VWM
Working Peak (Standoff) Voltage
IPP
Peak Pulse Current
PPP
Peak Pulse Power
VC
Clamping 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
