25Φ SERIES
Metal Oxide Varistor (MOV) Data Sheet
Features
■
■
■
■
■
■
■
■
Wide operating voltage (V
1mA
) range from 18V to 1800V
Fast responding to transient over-voltage
Large absorbing transient energy capability
Low clamping ratio and no follow-on current
Meets MSL level 1, per J-STD-020
Operating Temperature:-40
℃
~ +85
℃
Storage Temperature:-40
℃
~ +125
℃
Safety certification: UL: E327997
CSA: 246579
VDE: 40027827
Applications
■
■
■
■
■
Transistor, diode, IC, thyristor or triac semiconductor protection
Surge protection in consumer electronics
Surge protection in industrial electronics
Surge protection in electronic home appliances, gas and petroleum appliances
Relay and electromagnetic valve surge absorption
Part number code
Revision:13-Apr.-18
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25Φ SERIES
Dimensions
Table 1
Unit: mm
Symbol
H
L(min.)
D
F(±1.0)
T
e(±0.8)
d(±0.1)
Dimension
27.0~31.5
20.0
25.0~28.0
10.0/12.5
Table 2
Table 2
1.0
Model
180K
220K
270K
330K
390K
470K
560K
680K
820K
101K
121K
151K
181K
201K
221K
241K
271K
301K
331K
T
2.5~4.8
2.6~4.9
2.6~5.0
2.7~5.2
2.6~5.5
2.7~5.1
2.8~5.4
2.9~5.7
2.6~4.5
2.9~4.6
2.9~4.8
2.7~4.9
2.8~5.2
2.9~5.2
3.0~5.3
3.1~5.8
3.1~5.3
3.2~5.5
3.2~5.7
e
Table 2
Unit: mm
Model
361K
391K
431K
471K
511K
561K
621K
681K
751K
781K
821K
911K
102K
112K
122K
142K
162K
182K
T
3.4~5.9
3.5~6.1
3.7~6.4
3.8~6.7
3.9~7.0
4.1~7.3
4.3~7.6
4.5~7.8
4.8~8.0
4.9~8.1
5.1~8.4
5.3~8.9
5.9~9.5
6.3~10.1
6.4~10.7
7.4~12.6
7.9~13.2
8.1~14.5
e
2.9
3.0
3.2
3.4
3.6
3.8
4.1
4.4
4.5
4.6
4.8
5.2
5.2
5.6
6.0
6.8
7.6
8.4
1.7
1.8
2.0
1.9
2.0
2.1
2.3
2.6
2.0
2.2
2.4
2.0
2.1
2.2
2.3
2.4
2.6
2.7
2.7
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25Φ SERIES
Electrical characteristics
Maximum
Allowable
Voltage
V
AC
(V)
180KD25
220KD25
270KD25
330KD25
390KD25
470KD25
560KD25
680KD25
820KD25
101KD25
121KD25
151KD25
181KD25
201KD25
221KD25
241KD25
271KD25
301KD25
331KD25
361KD25
391KD25
431KD25
471KD25
511KD25
561KD25
621KD25
681KD25
751KD25
781KD25
821KD25
911KD25
102KD25
112KD25
122KD25
142KD25
162KD25
182KD25
11
14
17
20
25
30
35
40
50
60
75
95
115
130
140
150
175
190
210
230
250
275
300
320
350
385
420
460
485
510
550
625
680
750
880
1000
1100
V
DC
(V)
14
18
22
26
31
38
45
56
65
85
100
125
150
170
180
200
225
250
275
300
320
350
385
415
460
505
560
615
640
670
745
825
895
990
1140
1280
1465
Varistor
Voltage
V
1mA
(V)
18(15~21.6)
22(19.5~26)
27(24~31)
33(29.5~36.5)
39(35~43)
47(42~52)
56(50~62)
68(61~75)
82(74~90)
100(90~110)
120(108~132)
150(135~165)
180(162~198)
200(180~220)
220(198~242)
240(216~264)
270(243~297)
300(270~330)
330(297~363)
360(324~396)
390(351~429)
430(387~473)
470(423~517)
510(459~561)
560(504~616)
620(558~682)
680(612~748)
750(675~825)
780(702~858)
820(738~902)
910(819~1001)
1000(900~1100)
1100(990~1210)
1200(1080~1320)
1400(1260~1540)
1600(1440~1760)
1800(1620~1980)
Maximum
Clamping
Voltage
I
P
(A)
30
30
30
30
30
30
30
30
150
150
150
150
150
150
150
150
150
150
150
150
150
150
150
150
150
150
150
150
150
150
150
150
150
150
150
150
150
V
C
(V)
36
43
53
65
77
93
110
135
135
165
200
250
300
340
360
395
455
500
550
595
650
710
775
845
925
1025
1120
1240
1290
1355
1500
1650
1815
1980
2310
2640
2970
Withstanding
Surge
Current
I (A)
4500
4500
4500
4500
4500
4500
4500
4500
15000
15000
15000
15000
15000
15000
15000
15000
15000
15000
15000
15000
15000
15000
15000
15000
15000
15000
15000
15000
15000
15000
15000
15000
15000
15000
15000
15000
15000
Maximum
Energy
(10/1000μs)
(J)
20
25
30
35
40
50
60
70
80
100
120
160
175
190
200
220
255
275
300
330
360
380
400
420
440
450
460
510
530
570
620
685
720
792
850
970
1092
Rated
Power
(W)
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
1.2
1.2
1.2
1.2
1.2
1.2
1.2
1.2
1.2
1.2
1.2
1.2
1.2
1.2
1.2
1.2
1.2
1.2
1.2
1.2
1.2
1.2
1.2
1.2
1.2
1.2
1.2
1.2
1.2
Typical
Capacitance
(Reference)
@1KHz (pf)
45000
29000
26500
18000
13500
11500
10500
9050
7700
6300
5200
4300
3500
3200
2900
2650
2400
2100
1900
1750
1600
1500
1400
1250
1150
1050
950
850
850
800
700
650
600
550
500
450
400
Part
Number
Notes: 1. The tolerance of varistor voltage between 18V and 27V is more than 10%.
2. Leakage Current (@83% of V
1mA
):IR≤50μA (180K~680K)
IR≤40μA (820K~182K)
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25Φ SERIES
Electrical Ratings
Items
Varistor Voltage
Test Condition/Description
The voltage between two terminals with the specified measuring
current 1mA.DC applied is called Vb.
The recommended maximum sine wave voltage (RMS) or the
Maximum DC voltage can be applied continuously.
The maximum voltage between two terminals with the specification
standard impulse current.
Applied waveform: 8/20μs
Requirement
Maximum Allowable
Voltage
Maximum Clamping
Voltage
To meet the
Specified value
Rated Wattage
The maximum average power that can be applied within the
specified ambient temperature.
The maximum energy within the varistor voltage change of ±10%
when one impulse of 10/1000μs or 2ms is applied.
The maximum current within the varistor voltage change of ±10%
with the standard impulse current (8/20μs) applied one time.
Energy
Withstanding Surge
Current
Varistor Voltage
Temp. Coefficient
≤0.05%/℃
The change of Vb shall be measured after the impulse listed below
which is applied 10,000 times continuously with the interval of ten
seconds at room temperature.
Surge Life
25Φ series
180K to 680K
820K to 182K
250A (8/20μs)
450A (8/20μs)
ΔVb
Vb
10%
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25Φ SERIES
Soldering Recommendation
Wave Lead Free Soldering Recommendation
300
Preheating
Maximum Wave 265℃
Soldering
Cooling
250
200
150
100
50
0
0
0.5
1
1.5
2
2.5
3
3.5
4
Time (minutes)
Item
Peak Temperature
Dipping Time
Soldering
Conditions
265℃
10 seconds (max.)
1 time
Recommendation Reworking Conditions with Soldering Iron
Item
Temperature of Soldering Iron-tip
Soldering Time
Distance from Varistor
Conditions
360℃ (max.)
3 seconds (max.)
2mm (min.)
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