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V575LS80 Datasheet(PDF) 4 Page - Littelfuse

Part No. V575LS80
Description  Line Voltage Operation, Radial Lead
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Manufacturer  LITTELFUSE [Littelfuse]
Direct Link  http://www.littelfuse.com
Logo LITTELFUSE - Littelfuse

V575LS80 Datasheet(HTML) 4 Page - Littelfuse

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Varistor Products
LA Varistor Series
Line Voltage Operation, Radial Lead
Device Ratings and Specifications (Continued)
Power Dissipation Ratings
Should transients occur in rapid succession, the average power dissipation
is the energy (watt-seconds) per pulse times the number of pulses per
second. The power so developed must be within the specifications shown
on the Device Ratings and Specifications table for the specific device.The
operating values of a MOV need to be derated at high temperatures as
shown in Figure 1. Because varistors only dissipate a relatively small
amount of average power they are not suitable for repetitive applications
that involve substantial amounts of average power dissipation.
V660LA10
10
660L
660
850
70
2500
940
1210
1820
25
70
V660LA50A
14
660L50
660
850
140
4500
940
1210
1820
50
200
V660LA100B
20
660L100
660
850
250
6500
940
1100
1650
100
400
V1000LA80A
14
1000L80
1000
1200
220
4500
1425
1800
2700
50
130
V1000LA160B
20
1000L160
1000
1200
360
6500
1425
1600
2420
100
250
NOTE: Average power dissipation of transients not to exceed 0.25W, 0.4W, 0.6W or 1W for model sizes 7mm, 10mm, 14mm and 20mm, respectively.
PART
NUMBER
MODEL
SIZE
DISC
DIA.
(mm)
DEVICE
MODEL
NUMBER
BRAND-
ING
MAXIMUM RATING (85 oC)
SPECIFICATIONS (25oC)
CONTINUOUS
TRANSIENT
VARISTOR VOLT-
AGE AT 1mA DC
TEST CURRENT
MAXIMUM
CLAMPING
VOLTAGE
8 x 20µs
TYPICAL
CAPACI-
TANCE
f = 1MHz
VRMS
VDC
ENERGY
10 x 1000µs
PEAK
CURRENT
8 x 20µs
VM(AC)
VM(DC)
WTM
ITM
VNOM
MIN
VNOM
MAX
VC
IPK
C
(V)
(V)
(J)
(A)
(V)
(V)
(A)
(pF)
100
90
80
70
60
50
40
30
20
10
0
-55
50
60
70
80
90
100
110
120
130
140 150
AMBIENT TEMPERATURE ( oC)
FIGURE 1. CURRENT, ENERGY AND POWER DERATING
CURVE
FIGURE 2. PEAK PULSE CURRENT TEST WAVEFORM
100
90
50
10
O1
T
T1
T2
TIME
O1 = Virtual Origin of Wave
T = Time From 10% to 90% of Peak
T1 = Virtual Front time = 1.25 • t
T2 = Virtual Time to Half Value (Impulse Duration)
Example: For an 8/20µs Current Waveform:
8µs = T1 = Virtual Front Time
20µs = T2 = Virtual Time to Half Value


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