8700 E. Thomas Road
Scottsdale, AZ 85252
Phone: (480) 941-6300
Fax:
(480) 947-1503
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
SA5.0
thru
SA170A
DESCRIPTION:
This Transient Voltage Suppressor is an economical, molded, commercial product
used to protect voltage sensitive components from destruction or partial degradation.
-12
The response time of their clamping action is virtually instantaneous (1 x 10
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.
5.0 thru 170 volts
500 Watts
Transient Voltage
Suppressors
DO-41
Peak Pulse Power Dissipation at 25°C: 500 Watts
°
Steady State Power Dissipation: 2.5 Watts at T
L
= +75°C
°
MAXIMUM RATINGS:
2 x
∅
.032 ± .002
[.81 ± .05]
3/8" Lead Length
t
clamping
(0 volts to BV Min.):
-12
-9
Unidirectional <1x10 Seconds: Bi-directional <5x10 Seconds.
Operating and Storage Temperature: -55° to +175°C
°
°
TYPICAL CHARACTERISTIC CURVES
PEAK PULSE POWER (Ppp) OR CONTINUOUS
POWER IN PERCENT OF 25°C RATING
100
PULSE CURRENT IN
PERCENT OF Ipp
Peak Value Ipp
100
Pulse Time Duration
(tp) is Defined as that
point where Ip decays
to 50% of
I surge
∅
.107
[2.72]
max.
.205
[5.21]
MAX.
2 X1.10
[27.94]
MIN.
POLARITY
Mark {cathode}
75
Peak Power
(Single pulse)
50
50
Continuous
Average Power
Lead Length = 3/8"
1
25
2
3
4
TIME (t) IN MILLISECONDS
NOTE: DIMENSIONS IN [ ] =MILLIMETERS
FIGURE 2
0
50
100
150 175
PULSE WAVEFORM FOR
EXPONENTIAL SURGE
T
L
LEAD TEMPERATURE °C
FIGURE 1
DERATING CURVE
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
MSC1400.PDF 03-20-00
SA5.0
thru
SA170A
ELECTRICAL CHARACTERISTICS AT 25°C
PART
NUMBER
BREAKDOWN
VOLTAGE V(BR)
TEST
CURRENT
IT
RATED
STAND
OFF
VOLTAGE
VWM
MIN.
MAX
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
°
α
V(BR)
SA78
SA78A
SA85
SA85A
SA90
SA90A
SA100
SA100A
SA110
SA110A
SA120
SA120A
SA130
SA130A
SA150
SA150A
SA160
SA160A
SA170
SA170A
VOLTS
86.7
86.7
94.4
94.4
100.0
100.0
111.0
111.0
122.0
122.0
133.0
133.0
144.0
144.0
167.0
167.0
178.0
178.0
189.0
189.0
VOLTS
106.0
95.8
115.0
104.0
122.0
111.0
136.0
123.0
149.0
135.0
163.0
147.0
176.0
159.0
204.0
185.0
218.0
197.0
231.0
209.0
mA
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
VOLTS
78
78
85
85
90
90
100
100
110
110
120
120
130
130
150
150
160
160
170
170
µ
ADC
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
VOLTS
139.0
126.0
151.0
137.0
160.0
146.0
179.0
162.0
196.0
177.0
214.0
193.0
231.0
209.0
268.0
243.0
287.0
259.0
304.0
275.0
AMP
3.6
4.0
3.3
3.6
3.1
3.4
2.8
3.1
2.6
2.8
2.3
2.0
2.2
2.4
1.9
2.1
1.7
1.9
1.6
1.8
% /
°
C
.106
.106
.106
.106
.107
.107
.107
.107
.107
.107
.107
.107
.108
.108
.108
.108
.108
.108
.108
.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
C-CAPACITANCE - PICOFARADS
MEASURED AT
ZERO BIAS
1000
100
MEASURED AT
STANDOFF
VOLTAGE
10
0
V
(BR)
10
100
1000
- BREAKDOWN VOLTAGE - VOLTS
FIGURE 3
TYPICAL CAPACITANCE VS
BREAKDOWN VOLTAGE
70
50
30
20
(P
PP
) - Peak Pulse Power, (kW)
T
C
= 25ºC
10
7.0
5.0
3.0
2.0
1.0
t
w
Ipp
1.0
0.5
IMPULSE
EXPONENTIAL
DECAY
0.7
0.5
0.3
0.2
0.1
0.1
Ipp
t
w
t
p
HALF
SINE
t
w
= .7t
P
Ipp
SQUARE
t
w
CURRENT WAVE FORM
0.2
0.5
1.0
2.0
5.0
10
20
50
100
200
1000
10000
tw - Pulse Width
µs
FIGURE 4
PEAK PULSE POWER VS. PULSE TIME
MSC1400.PDF 03-20-00
PCB Design
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