V100RA16 Просмотр технического описания (PDF) - Littelfuse, Inc
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V100RA16 Datasheet PDF : 8 Pages
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Varistor Products
Low Profile / Application Specific Varistors > RA Series
RA Series Ratings & Specifications
Part
Number
V200RA16
† V220RA16
† V240RA16
† V270RA16
† V360RA16
† V390RA16
† V430RA16
Brand
(mm)
200R16
220R16
240R16
270R16
360R16
390R16
430R16
Maximum Rating (125°C)
Continuous
Transient
VRMS
VDC
Energy
(10/1000μs)
Peak
Current
(8/20μs)
VM(AC)
VM(DC)
WTM
ITM
(V)
(V)
(J)
(A)
130
175
38.0
4500
140
180
42.0
4500
150
200
45.0
4500
175
225
55.0
4500
230
300
70.0
4500
250
330
72.0
4500
275
369
75.0
4500
Specifications (25°C)
Varistor Voltage at 1mA
DC Test Current
Max Clamping
Volt VC at 2.0A
(8/20μs)
Typical
Capacitance
Min
VN(DC)
Max
VC
Ip
(V)
(V)
(V)
(V)
(A)
184
200
228 340
50
198
220
242 360
50
212
240
268 395
50
247
270
303 455
50
324
360
396 595
50
354
390
429 650
50
389
430
473 710
50
f = 1MHz
(pF)
1000
900
800
700
550
500
450
† RA22 Series
V24RA22
24R22 14
V36RA22
† V200RA22
† V240RA22
† V270RA22
† V390RA22
† V430RA22
36R22 23
200R22 130
240R22 150
270R22 175
390R22 250
430R22 275
18
(Note 3)
31
175
200
225
330
369
100.0
(Note 2)
160.0
(Note 2)
70.0
80.0
90.0
130.0
140.0
2000
2000
6500
6500
6500
6500
6500
19.2
24
(Note 4)
26
43
20
32
36
(Note 4)
40
63
20
184
200
228 340
100
212
240
268 395
100
247
270
303 455
100
354
390
429 650
100
389
430
473 710
100
NOTES:
1. Average power dissipation of transients not to exceed 0.25W for RA8 Series, 0.60W for RA16 Series, or 1.0W for RA22 Series.
2. Energy ratings for impulse duration of 30ms minimum to one half of peak current value.
3. Also rated to withstand 24V for 5 minutes.
4. 10mA DC Test Current.
† Under UL File No. E320116 as a recognized component. CSA approved File No. LR91788.
Power Dissipation Ratings
Peak Pulse Current Test Waveform
18000
12000
1900
1600
1400
1000
900
100
90
80
70
60
50
40
30
20
10
0
-55 50 60 70 80 90 100 110 120 130 140 150
Figure 1
AMBIENTTEMPERATURE ( oC)
Should transients occur in rapid succession, the average power
dissipation required is simply 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. Furthermore,
the operating values need to be derated at high temperatures as
shown above. Because varistors can only dissipate a relatively
small amount of average power they are, therefore, not suitable
for repetitive applications that involve substantial amounts of aver-
age power dissipation.
100
90
50
10
O1
Figure 2
T
T1
T2
TIME
01 = Virtual Origin of Wave
T = Time from 10% to 90% of Peak
T1 = Rise Time = 1.25 x T
T2 = Decay Time
Example - For an 8/20 μs Current Waveform:
8μs = T1 = Rise Time
20μs = T2 = Decay Time
©2009 Littelfuse, Inc.
Specifications are subject to change without notice.
Please refer to www.littelfuse.com/series/ra.html for current information.
195
Revision: November 11, 2009
RA Varistor Series
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