MSC1400.PDF 03-20-00
SA5.0
thru
SA170A
FEATURES:
ECONOMICAL SERIES
AVAILABLE IN BOTH UNIDIRECTIONAL AND BI-DIRECTIONAL CONSTRUCTION
5.0 TO 170 STAND-OFF VOLTAGE AVAILABLE
500 WATTS PEAK PULSE POWER DISSIPATION
QUICK RESPONSE
DESCRIPTION:
DESCRIPTION:
DESCRIPTION:
DESCRIPTION:
This Transient Voltage Suppressor is an economical, molded, commercial product
used to protect voltage sensitive components from destruction or partial degradation.
The response time of their clamping action is virtually instantaneous (1 x 10
-12
seconds) and they have a peak pulse power rating of 500 watts for 1 ms as depicted in
Figure 1 and 2. Microsemi also offers a great variety of other Transient Voltage
Suppressor's to meet higher and lower power demands and special applications.
MAXIMUM RATINGS:
MAXIMUM RATINGS:
MAXIMUM RATINGS:
MAXIMUM RATINGS:
Peak Pulse Power Dissipation at 25
C: 500 Watts
Steady State Power Dissipation: 2.5 Watts at T
L
= +75
C
3/8" Lead Length
t
clamping
(0 volts to BV Min.):
Unidirectional <1x10
-12
Seconds: Bi-directional <5x10
-9
Seconds.
Operating and Storage Temperature: -55
to +175
C
8700 E. Thomas Road
Scottsdale, AZ 85252
Phone: (480) 941-6300
Fax: (480) 947-1503
5.0 thru 170 volts
500 Watts
Transient Voltage
Suppressors
2 x
.032 .002
[.81 .05]
.107
[2.72]
max.
POLARITY
Mark {cathode}
.205
[5.21]
MAX.
NOTE: DIMENSIONS IN [ ] =MILLIMETERS
PEAK PULSE POWER (Ppp) OR CONTINUOUS
POWER IN PERCENT OF 25C RATING
FIGURE 1
DERATING CURVE
Continuous
Average Power
Lead Length = 3/8"
Peak Power
(Single pulse)
0
50
100
150
175
25
50
75
100
TYPICAL CHARACTERISTIC CURVES
T
L
LEAD TEMPERATURE C
Pulse Time Duration
(tp) is Defined as that
point where Ip decays
to 50% of
I surge
Peak Value Ipp
100
50
1
2
3
4
TIME (t) IN MILLISECONDS
FIGURE 2
PULSE WAVEFORM FOR
EXPONENTIAL SURGE
PULSE CURRENT IN
PERCENT OF Ipp
MECHANICAL
CHARACTERISTICS
CASE: Void free transfer
molded thermosetting
plastic.
FINISH: Readily solderable.
POLARITY: Band denotes
cathode. Bi-directional not
marked.
WEIGHT: 0.7 gram (Appx.).
MOUNTING POSITION: Any
DO-41
2 X1.10
[27.94]
MIN.
MSC1400.PDF 03-20-00
SA5.0
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SA170A
ELECTRICAL CHARACTERISTICS AT 25
C
PART
NUMBER
BREAKDOWN
VOLTAGE V(BR)
MIN.
MAX
TEST
CURRENT
IT
RATED
STAND
OFF
VOLTAGE
VWM
MAX. REVERSE
STANDBY
CURRENT
ID @
VWM
MAX.
PEAK
REVERSE
VOLTAGE
VC MAX.
@ IPP
MAX. PEAK
PULSE
CURRENT
IPP
(Figure 2)
MAX.
TEMP.
COEFFICIENT
OF V(BR)
-55
C TO
175
C
V(BR)
VOLTS
VOLTS
mA
VOLTS
ADC
VOLTS
AMP
% /
C
SA78
86.7
106.0
1
78
1
139.0
3.6
.106
SA78A
86.7
95.8
1
78
1
126.0
4.0
.106
SA85
94.4
115.0
1
85
1
151.0
3.3
.106
SA85A
94.4
104.0
1
85
1
137.0
3.6
.106
SA90
100.0
122.0
1
90
1
160.0
3.1
.107
SA90A
100.0
111.0
1
90
1
146.0
3.4
.107
SA100
111.0
136.0
1
100
1
179.0
2.8
.107
SA100A
111.0
123.0
1
100
1
162.0
3.1
.107
SA110
122.0
149.0
1
110
1
196.0
2.6
.107
SA110A
122.0
135.0
1
110
1
177.0
2.8
.107
SA120
133.0
163.0
1
120
1
214.0
2.3
.107
SA120A
133.0
147.0
1
120
1
193.0
2.0
.107
SA130
144.0
176.0
1
130
1
231.0
2.2
.108
SA130A
144.0
159.0
1
130
1
209.0
2.4
.108
SA150
167.0
204.0
1
150
1
268.0
1.9
.108
SA150A
167.0
185.0
1
150
1
243.0
2.1
.108
SA160
178.0
218.0
1
160
1
287.0
1.7
.108
SA160A
178.0
197.0
1
160
1
259.0
1.9
.108
SA170
189.0
231.0
1
170
1
304.0
1.6
.108
SA170A
189.0
209.0
1
170
1
275.0
1.8
.108
Note: For Bi-directional construction, indicate a C or CA suffix after the part number, i.e. SA5.0CA
MSC1400.PDF 03-20-00
SA5.0
thru
SA170A
10000
1000
100
10
MEASURED AT
ZERO BIAS
MEASURED AT
STANDOFF
VOLTAGE
C-CAPACITANCE - PICOFARADS
10
0
100
1000
V
(BR)
- BREAKDOWN VOLTAGE - VOLTS
FIGURE 3
TYPICAL CAPACITANCE VS
B R E A K D O W N V O L T A G E
10
7.0
5.0
3.0
2.0
1.0
0.7
0.5
0.3
0.2
0.1
0.1
1.0
10
100
10000
0.2
0.5
2.0
5.0
20
50
200
1000
T
C
= 25C
tw - Pulse Width s
FIGURE 4
PEAK PULSE POWER VS. PULSE TIME
(P
PP
) - Peak Pulse Power, (kW)
20
30
50
70
C U R R E N T W A V E F O R M
t
w
t
p
t
w
S Q U A R E
H A L F
SINE
t
w = .7tP
t
w
0.5
1.0
I M P U L S E
E X P O N E N T I A L
D E C A Y
Ipp
Ipp
Ipp
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