60
Varistor Products
©2009 Littelfuse, Inc.
Revision: November 5, 2009
CH Varistor Series
Surface Mount Varistors > CH Series
Specifications are subject to change without notice.
Please refer to www.littelfuse.com/series/CH.html for current information.
Part
Number
Maximum Ratings (125ºC)
Specifications (25ºC)
Continuous
Transient
Varistor Voltage at 1 mA DC
Test Current
Max Clamping Volt V
C
at
Test Current (8/20s)
Typical
Capacitance
V
RMS
V
DC
Energy
(10/1000
s)
Peak Current
(8/20s)
V
M(AC)
V
M(DC)
W
TM
I
TM
MIN
V
N(DC)
MAX
V
C
I
P
f=1MHz
(V)
(V)
(J)
(A)
(V)
(V)
(V)
(V)
(A)
(pF)
V22CH8
14
18 (Note 3)
1.0 (Note2)
100
18.7
22.0
26.0
47
5
1600
V27CH8
17
22
1.0
100
23.0
27.0
31.1
57
5
1300
V33CH8
20
26
1.0
100
29.5
33.0
36.5
68
5
1100
V39CH8
25
31
1.0
100
35.0
39.0
43.0
79
5
900
V47CH8
30
38
1.2
100
42.0
47.0
52.0
92
5
800
V56CH8
35
45
1.4
100
50.0
56.0
62.0
107
5
700
V68CH8
40
56
1.5
100
61.0
68.0
75.0
127
10
600
V120CH8
75
102
2.0
250
108.0
120.0
132.0
200
10
300
V150CH8
95
127
3.0
250
135.0
150.0
165.0
250
10
250
V180CH8
115
153
4.0
250
162.0
180.0
198.0
295
10
200
V200CH8
130
175
4.0
250
184.0
200.0
228.0
340
10
180
V220CH8
140
180
5.0
250
198.0
220.0
242.0
360
10
160
V240CH8
150
200
5.0
250
212.0
240.0
268.0
395
10
150
V360CH8
230
300
6.0
250
324.0
360.0
396.0
595
10
100
V390CH8
250
330
7.0
250
354.0
390.0
429.0
650
10
90
V430CH8
275
369
8.0
250
389.0
430.0
473.0
710
10
80
Device Ratings and Specifications
NOTES:
1. Power dissipation of transients not to exceed 0.25W.
2. Energy rating for impulse duration of 30ms minimum to one half of peak current value.
3. Also rated to withstand 24V for 5 minutes.
4. All Littelfuse CH Series Varistors are recognized under UL file #E320116 as a recognized component.
Current, Energy and Power Derating Curve
Continuous power dissipation capability is not an applicable
design requirement for a suppressor, unless transients
occur in rapid succession. Under this condition, 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 tempera
tures as shown in this diagram. 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 average power dissipation.
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 (
o
C)
PERCENT OF R
A
TED
V
ALUE
Figure 1
Summary :
Part Number Maximum Ratings (125ºC) Specifications (25ºC) Continuous Transient Varistor Voltage at 1 mA DC Test Current Max Clamping Volt V C at Test Current (8/20s) Typical Capacitance V RMS V DC Energy (10/1000 s) Peak Current (8/20s) V M(AC) V M(DC) W TM I TM MIN V N(DC) MAX V C I P f=1MHz (V) (V) (J) (A) (V) (V) (V) (V) (A) (pF) V22CH8 14 18 (Note 3) 1.0 (Note2) 100 18.7 22.0 26.0 47 5 1600 V27CH8 17 22 1.0 100 23.0 27.0 31.1 57 5 1300 V33CH8 20 26 1.0 100 29.5 33.0 36.5 68 5 1100 V39CH8 25 31 1.0 100 35.0 39.0 43.0 79 5 900 V47CH8 30 38 1.2 100 42.0 47.0 52.0 92 5 800 V56CH8 35 45 1.4 100 50.0 56.0 62.0 107 5 700 V68CH8 40 56 1.5 100 61.0 68.0 75.0 127 10 600 V120CH8 75 102 2.0 250 108.0 120.0 132.0 200 10 300 V150CH8 95 127 3.0 250 135.0 150.0 165.0 250 10 250 V180CH8 115 153 4.0 250 162.0 180.0 198.0 295 10 200 V200CH8 130 175 4.0 250 184.0 200.0 228.0 340 10 180 V220CH8 140 180 5.0 250 198.0 220.0 242.0 360 10 160 V240CH8 150 200 5.0 250 212.0 240.0 268.0 395 10 150 V360CH8 230 300 6.0 250 324.0 360.0 396.0 595 10 100 V390CH8 250 330 7.0 250 354.0 390.0 429.0 650 10 90 V430CH8 275 369 8.0 250 389.0 430.0 473.0 710 10 80 Device Ratings and Specifications NOTES: 1.
Tags :
power,current,specifications,dissipation,energy,ratings,aristor,200,aristors,deice,150,aerage,series