參數(shù)資料
型號: V250LA40C
廠商: Littelfuse, Inc.
元件分類: 壓敏電阻
英文描述: C-III Varistor Series
中文描述: ? -Ⅲ壓敏電阻系列
文件頁數(shù): 3/7頁
文件大?。?/td> 326K
代理商: V250LA40C
C-III Varistor Series
Varistor Products
High Energy Radial Lead
3
C-III Series Specifications
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 0for repetitive applications that involve substantial amounts of
average power dissipation.
PART
NUMBER
MODEL SIZE
DISC
DIAMETER (mm)
SPECIFICATIONS (25
o
C)
VARISTOR VOLTAGE AT 1mA
DC TEST CURRENT
MAXIMUM CLAMPING
VOLTAGE
(8/20
μ
s)
DUTY CYCLE
SURGE RATING
V
N
MIN
(V)
V
N
MAX
(V)
V
C
(V)
I
p
(A)
3kA
(8/20
μ
s)
# PULSES
750A
(8/20
μ
s)
# PULSES
V130LA10C
V130LA20C
V130LA20CX325
14
20
20
184
184
184
228
228
220
340
340
325
50
100
100
10
20
20
80
120
120
V140LA10C
V140LA20C
V140LA20CX340
14
20
20
198
198
198
242
242
230
360
360
340
50
100
100
10
20
20
80
120
120
V150LA10C
V150LA20C
V150LA20CX360
14
20
20
212
212
212
268
268
243
395
395
360
50
100
100
10
20
20
80
120
120
V175LA10C
V175LA20C
V175LA20CX425
14
20
20
247
247
247
303
303
285
455
455
425
50
100
100
10
20
20
80
120
120
V230LA20C
V230LA40C
V230LA40CX570
14
20
20
324
324
324
396
396
384
595
595
570
50
100
100
10
20
20
80
120
120
V250LA20C
V250LA40C
V250LA40CX620
14
20
20
354
354
354
429
429
413
650
650
620
50
100
100
10
20
20
80
120
120
V275LA20C
V275LA40C
V275LA40CX680
14
20
20
389
389
389
473
473
453
710
710
680
50
100
100
10
20
20
80
120
120
V300LA20C
V300LA40C
V300LA40CX745
14
20
20
420
420
420
517
517
490
775
775
745
50
100
100
10
20
20
80
120
120
V320LA20C
V320LA40C
14
20
462
462
565
565
850
850
50
100
10
20
80
120
NOTE: Average power dissipation of transients not to exceed 0.6W and 1W for model sizes 14mm and 20mm, respectively.
100
90
80
70
60
50
40
30
20
10
0
-55
50
60
70
AMBIENT TEMPERATURE (
o
C)
80
90
100
110
120
130
140 150
P
FIGURE 1. CURRENT, ENERGY AND POWER DERATING
CURVE
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