V390CH8 Littelfuse Inc, V390CH8 Datasheet - Page 2

• Manufacturer Part Number: V390CH8
• Description: VARISTR 390V 250A 7J SMD CH T/R
• Manufacturer: Littelfuse Inc
• Series: CHr

Specifications of V390CH8

• Varistor Voltage: 390V
• Current-surge: 250A
• Number Of Circuits: 1
• Maximum Ac Volts: 250VAC
• Maximum Dc Volts: 330VDC
• Energy: 7.0J
• Package / Case: Non-Standard SMD
• Suppressor Type: Transient Voltage
• Peak Surge Current @ 8/20µs: 500A
• Clamping Voltage Vc Max: 650V
• Peak Energy (10/1000us): 21J
• Voltage Rating Vdc: 330V
• Voltage Rating Vac: 250V
• Voltage Rating Dc: 330 V
• Voltage Rating Ac: 250 V
• Clamping Voltage: 650 V
• Peak Surge Current: 500 A
• Capacitance: 90 pF
• Operating Temperature Range: - 55 C to + 125 C
• Dimensions: 5 mm W x 8 mm L x 2.03 mm H
• Lead Free Status / RoHS Status: Lead free by exemption / RoHS Compliant
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free by exemption / RoHS Compliant

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.
5. The Typical Capacitance is for reference only
CH Varistor Series
Device Ratings and Specifications
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.
V22CH8
V27CH8
V33CH8
V39CH8
V47CH8
V56CH8
V68CH8
V120CH8
V150CH8
V180CH8
V200CH8
V220CH8
V240CH8
V360CH8
V390CH8
V430CH8
Number
Part
V
V
230
250
275
115
130
140
150
(V)
14
17
20
25
30
35
40
75
95
M(AC)
RMS
Continuous
18 (Note 3)
Maximum Ratings (125ºC)
V
200
300
330
369
V
102
127
153
175
180
(V)
M(DC)
22
26
31
38
45
56
DC
(10/1000μ s)
1.0 (Note2)
Energy
Surface Mount Varistors > CH Series
W
2.0
3.0
4.0
4.0
5.0
5.0
6.0
8.0
(J)
1.0
1.0
1.0
1.2
1.4
1.5
7 .0
TM
Transient
Peak Current
(8/20μs)
100
100
100
100
100
100
100
250
250
250
250
250
250
250
250
250
(A)
I
TM
Varistor Products
Revision: August 30, 2010
Varistor Voltage at 1 mA DC
135.0
162.0
184.0
198.0
212.0
324.0
354.0
389.0
108.0
MIN
18.7
23.0
29.5
35.0
42.0
50.0
61.0
(V)
Figure 1
Test Current
100
200.0
220.0
240.0
360.0
390.0
430.0
90
80
70
60
50
40
30
20
10
120.0
150.0
180.0
V
22.0
33.0
39.0
56.0
68.0
27 .0
47 .0
0
-55
(V)
N(DC)
50
Please refer to www.littelfuse.com/series/CH.html for current information.
60
MAX
132.0
165.0
198.0
228.0
242.0
268.0
396.0
429.0
473.0
26.0
36.5
43.0
52.0
62.0
75.0
31.1
(V)
Specifications (25ºC)
70
AMBIENT TEMPERATURE (
Max Clamping Volt V
80
Test Current (8/20μs)
200
250
295
340
360
395
595
650
107
127
710
(V)
V
47
57
68
79
92
90
Specifications are subject to change without notice.
C
100
110
120
o
(A)
10
10
10
10
10
10
10
10
10
10
C)
I
5
5
5
5
5
5
P
130
C
at
©2010 Littelfuse, Inc.
140
Capacitance
f=1MHz
Typical
150
1600
1300
(pF)
750
700
650
600
500
300
250
120
105
100
110
70
60
50