TMOV25SP385M Littelfuse Inc, TMOV25SP385M Datasheet - Page 154
![TMOV VARISTOR PB FREE 25S](/photos/22/0/220041/4684176_sml.jpg)
TMOV25SP385M
Manufacturer Part Number
TMOV25SP385M
Description
TMOV VARISTOR PB FREE 25S
Manufacturer
Littelfuse Inc
Series
iTMOV®r
Specifications of TMOV25SP385M
Varistor Voltage
682V
Current-surge
20kA
Number Of Circuits
1
Maximum Ac Volts
385VAC
Energy
430J
Package / Case
Disc 25mm 3-Lead
Suppressor Type
Varistor
Peak Surge Current @ 8/20µs
20000A
Varistor Case
25mm DISC
Clamping Voltage Vc Max
1010V
Peak Energy (10/1000us)
430J
Voltage Rating Vdc
682V
Voltage Rating Vac
385V
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Maximum Dc Volts
-
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
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Note : Average power dissipation of transients not to exceed 2.0W.
DA/DB Varistor Series
DA/DB Series Ratings & Specifications
Power Dissipation Ratings
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 average power dissipation.
V131DA40
V151DA40
V251DA40
V271DA40
V321DA40
V421DA40
V481DA40
V571DA40
V661DA40
V751DA40
V511DA40
Figure 1
NOTES:
1. Peak current Applies to applications rated up to 115VRMS. Peak
current is 30kA for applications greater than 115V.
2. Peak current applies to applications rated up to 132VRMS. Peak
Current is 30kA for applications greater than 132V.
DA
Device Branding
Part Number
100
90
80
70
60
50
40
30
20
10
0
-55
Industrial High Energy Terminal Varistors > DA/DB Series
50
V131DB40
V151DB40
V251DB40
V271DB40
V321DB40
V421DB40
V481DB40
V571DB40
V661DB40
V751DB40
V511DB40
60
DB
70
AMBIENT TEMPERATURE (
80
V
V
130
150
250
275
320
420
480
575
660
750
90
510
(V)
M(AC)
RMS
Continuous
100
Maximum Rating (85ºC)
110
V
175
200
330
369
420
560
640
675
730
850
970
V
(V)
M(DC)
o
120
DC
C)
130
Energy
(2ms)
140
1050
W
270
300
370
400
460
600
650
700
770
900
(J)
TM
15
Transient
Revision: November 5, 2009
Varistor Products
8 x 20μs
Current
40000
40000
40000
40000
40000
40000
40000
40000
40000
40000
40000
Peak
(A)
150
I
TM
1
2
Peak Pulse Current Test Waveform
Figure 2
1080
Min
184
212
354
389
462
670
735
805
940
610
0
T = Time from 10% to 90% of Peak
T
T
Example - For an 8/20 μs Current Waveform:
(V)
Varistor Voltage at 1mA
1
1
2
= Virtual Origin of Wave
= Rise Time = 1.25 x T
= Decay Time
DC Test Current
O
8μs = T
20μs = T
100
1
Please refer to www.littelfuse.com/series/da or /db.html for current information.
90
50
10
1200
V
1050
200
240
390
430
510
680
750
820
910
(V)
NOM
1
= Rise Time
2
= Decay Time
Specifications (25ºC)
T
T
1
1000
1320
Max
1160
228
268
429
473
561
825
748
910
(V)
T
2
Specifications are subject to change without notice.
200A Current
Maximum
Clamping
Volt V
(8/20μs)
1240
1350
1480
1720
2000
1130
345
405
650
730
830
(A)
V
C
C
TIME
at
©2009 Littelfuse, Inc.
tance f =
Capaci-
Typical
10000
1MHz
8000
5000
4500
3800
3000
2700
2500
2200
2000
1800
(pF)
C
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