TVZ : Thermo-Fuse Varistor
DESCRIPTION
Our Thermo-Fuse Varistor (TVZ) is a family of Transient Voltage Surge Suppression products. TVZ
is a three-lead Thermally Protected Metal Oxide Varistor. One lead of the TVZ varistor is connected to
a thermal fuse, it will automatically open-circuit when the varistor is under sustained abnormal
over-voltage condition. The TVZ series is designed to meet the abnormal over-voltage requirements
of UL 1449, Section 37.
Traditional Metal Oxide Varistor (MOV) withstands 150% of its rated voltage for a given duration.
But MOV may fail to a short-circuit condition or fail open when subjected to sustained steady-state
over-voltage above its rated specifications.
Our TVZ has a thermal fuse incorporated with its MOV disk that responds to the MOV temperature
and disconnects the MOV from power should the temperature exceed a certain level.
Our TVZ provides a real “Fail Safe” protection to sensitive downstream electric components.
FEATURES
•
Low Leakage Current under normal operating voltage. Meets UL 1449 abnormal over- voltage test
(5A,2.5A,0.5A and 0.125A).
•
UL1449 pending which include selected test from UL1020 regarding thermal cutoff.
PART NUMBER CODES
TVZ
Thermo- Fuse
ZnO Varistor
Diameter
18: 18mm
20: 20mm
25: 25mm
TYPE
D: Standard Disk series
E: High energy series
20
E
241
K
B
S
S: Straight lead
B: Bulk package
K: Voltage tolerance+/-10%
VARISTOR VOLTAGE
241＝24×10
1
＝240
( DC Volt )
*Marking: (a) SINCERA. which is the brand name.
(b) Part marking, for example: T20E241K
(c) Date code (backside): Manufactured year and month. (2 digit)
(ie: 2002=2, 1-9 for January through September and O for October, N
for November, D for December)
RATING
•
-55℃to 85℃ Operating Temperature Range
•
-55℃to 125℃ Storage Temperature Range
•
Maximum Voltage-Temperature Coefficient:
•
Hi-Pot Encapsulation:
•
Insulation Resistance:
•
Typical Response Time:
•
Continuous RMS Current
•
Isolation Capability (When thermal element is open)
< 0.01
2500
>1000
<15
100
600
%/℃
Vdc
MΩ
nseconds
mA
Vac
TVZ : Thermo-Fuse Varistor
•
DIMENSION
TVZ Series
Dmax
Hmax
a
b
dφ
(ΝΟΜ.)
TVZ18
21.0 (0.83)
24.0 (0.94)
0.8 (0.031)
7.5 (0.30)
6.5 (0.26)
TVZ20
24.0 (0.94)
29.0 (1.14)
1.0 (0.039)
10.0 (0.39)
6.5 (0.26)
TVZ25
28.5 (1.12)
33.0 (1.30)
1.0 (0.039)
12.7 (0.50)
6.5 (0.26)
(1) Unit: mm (inch)
(2) a
±
1.0 (0.039), b
±
1.2 (0.047)
(3) 1mm lead diameter is available upon special request for 18mm. Please add suffix “R” after part number
(4) For 25mm min. fuse lead (lead #3), please add suffix “FL” after part number
Dmax.
Tmax.
Varistor
Hmax.
Fuse
a
25 min.
(0.98)
12.5(0.49) min.
3
1 2
a b
W2
W1
dφ
b
1
2
3
Varistor
TVZ18 Series
TVZ20 Series
Tmax
W1
W2
Tmax
W1
W2
Type
180K
7.0 (0.28) 1.7 (0.07) 3.3 (0.13)
220K
7.2 (0.28) 1.8 (0.07) 3.4 (0.13)
270K
7.2 (0.28) 2.0 (0.08) 3.6 (0.14)
330K
7.4 (0.29) 2.1 (0.08) 3.7 (0.15)
390K
7.4 (0.29) 2.4 (0.09) 4.0 (0.16)
470K
7.4 (0.29) 2.7 (0.11) 4.3 (0.17)
560K
7.5 (0.30) 3.0 (0.12) 4.6 (0.18)
680K
7.6 (0.30) 3.1 (0.12) 4.7 (0.19)
820K
7.4 (0.29) 1.8 (0.07) 3.3 (0.13) 7.6 (0.30) 1.8 (0.07) 3.3 (0.13)
181K
7.4 (0.29) 1.9 (0.07) 3.4 (0.13) 7.6 (0.30) 1.9 (0.07) 3.4 (0.13)
201K
7.8 (0.31) 2.0 (0.08) 3.5 (0.14) 7.9 (0.31) 2.0 (0.08) 3.6 (0.14)
221K
8.0 (0.31) 2.0 (0.08) 3.6 (0.14) 8.1 (0.32) 2.1 (0.08) 3.7 (0.15)
241K
8.1 (0.32) 2.1 (0.08) 3.7 (0.15) 8.2 (0.32) 2.2 (0.09) 3.8 (0.15)
271K
8.2 (0.32) 2.2 (0.09) 3.8 (0.15) 8.3 (0.33) 2.3 (0.09) 3.9 (0.15)
301K
8.4 (0.33) 2.4 (0.09) 4.0 (0.16) 8.4 (0.33) 2.5 (0.10) 4.1 (0.16)
331K
8.5 (0.33) 2.6 (0.10) 4.2 (0.17) 8.5 (0.33) 2.7 (0.11) 4.3 (0.17)
361K
8.5 (0.33) 2.7 (0.11) 4.3 (0.17) 8.6 (0.34) 2.8 (0.11) 4.4 (0.17)
391K
8.6 (0.34) 2.9 (0.11) 4.5 (0.18) 8.7 (0.34) 3.0 (0.12) 4.6 (0.18)
431K
8.7 (0.34) 3.0 (0.12) 4.7 (0.19) 8.8 (0.35) 3.2 (0.13) 4.8 (0.19)
471K
9.0 (0.35) 3.2 (0.13) 4.9 (0.19) 9.1 (0.36) 3.4 (0.13) 5.1 (0.20)
511K
9.4 (0.37) 3.4 (0.13) 5.2 (0.20) 9.5 (0.37) 3.6 (0.14) 5.4 (0.21)
561K
9.6 (0.38) 3.7 (0.15) 5.4 (0.21) 9.7 (0.38) 3.8 (0.15) 5.6 (0.22)
621K
10.0 (0.39) 3.9 (0.15) 5.7 (0.22) 10.1 (0.40) 4.1 (0.16) 5.9 (0.23)
681K
10.3 (0.41) 4.2 (0.17) 6.0 (0.24) 10.4 (0.41) 4.4 (0.17) 6.2 (0.24)
751K
10.4 (0.41) 4.5 (0.18) 6.4 (0.25) 10.7 (0.42) 4.7 (0.19) 6.6 (0.26)
781K
10.6 (0.42) 4.7 (0.19) 6.6 (0.26) 10.9 (0.43) 4.9 (0.19) 6.8 (0.27)
821K
10.8 (0.43) 4.9 (0.19) 6.8 (0.27) 11.0 (0.43) 5.1 (0.20) 7.0 (0.28)
911K
11.3 (0.44) 5.3 (0.21) 7.2 (0.28) 11.5 (0.45) 5.5 (0.22) 7.5 (0.30)
102K
11.8 (0.46) 5.7 (0.22) 7.8 (0.31) 12.0 (0.47) 6.0 (0.24) 8.0 (0.31)
112K
12.0 (0.47) 6.3 (0.25) 8.3 (0.33) 12.2 (0.48) 6.5 (0.26) 8.6 (0.34)
(1) W1 and W2 are maximum dimension. (2) Unit: mm (inch)
TVZ25 Series
Tmax
W1
W2
7.9 (0.31)
8.2 (0.32)
8.3 (0.33)
8.4 (0.33)
8.6 (0.34)
8.8 (0.35)
8.9 (0.35)
9.0 (0.35)
9.2 (0.36)
9.5 (0.37)
9.9 (0.39)
10.1 (0.40)
10.4 (0.41)
10.7 (0.42)
11.1 (0.44)
11.3 (0.44)
11.4 (0.45)
11.8 (0.46)
12.4 (0.49)
12.6 (0.50)
2.1 (0.08)
2.2 (0.09)
2.3 (0.09)
2.4 (0.09)
2.6 (0.10)
2.8 (0.11)
2.9 (0.11)
3.1 (0.12)
3.3 (0.13)
3.5 (0.14)
3.7 (0.15)
3.9 (0.15)
4.2 (0.17)
4.5 (0.18)
4.8 (0.19)
5.0 (0.20)
5.2 (0.20)
5.6 (0.22)
6.1 (0.24)
6.6 (0.26)
3.7 (0.15)
3.8 (0.15)
3.9 (0.15)
4.0 (0.16)
4.2 (0.17)
4.4 (0.17)
4.5 (0.18)
4.7 (0.19)
4.9 (0.19)
5.2 (0.20)
5.5 (0.22)
5.7 (0.22)
6.0 (0.24)
6.3 (0.25)
6.7 (0.26)
6.9 (0.27)
7.1 (0.28)
7.6 (0.30)
8.1 (0.32)
8.7 (0.34)
TVZ : Thermo-Fuse Varistor
DERATINGS AND SPECIFICATIONS
MAXIMUM RATINGS
MAXIMUM
CONTINUOUS
WORKING
VOLTAGE
MAXIMUM
NON-
REPETITIVE
SURGE
CURRENT
(8/20μs)
MAXIMUM
NON-
REPETITIVE
SURGE
ENERGY
(10/1000μs)
MAXIMUM
CLAMPING
VOLTAGE AT
SPECIFIED
CURRENT
(8/20μs)
SPECIFICATIONS
NOMINAL VOLTAGE
AT 1mA (DC)
CURRENT
@1KHZ
TYPICAL
CAPACITANCE
PART
NUMBER
V
M(AC)
V
M(DC)
(V)
TVZ20D180KBS
TVZ20D220KBS
TVZ20D270KBS
TVZ20D330KBS
TVZ20D390KBS
TVZ20D470KBS
TVZ20D560KBS
TVZ20D680KBS
TVZ20E820KBS
TVZ20E181KBS
TVZ20E201KBS
TVZ20E221KBS
TVZ20E241KBS
TVZ20E271KBS
TVZ20E301KBS
TVZ20E331KBS
TVZ20E361KBS
TVZ20E391KBS
TVZ20E431KBS
TVZ20E471KBS
TVZ20E511KBS
TVZ20E561KBS
TVZ20E621KBS
TVZ20E681KBS
TVZ20E751KBS
TVZ20E781KBS
TVZ20E821KBS
TVZ20E911KBS
TVZ20E102KBS
TVZ20E112KBS
11
14
17
20
25
30
35
40
50
120
130
140
150
180
195
210
230
250
275
300
320
360
390
420
460
485
510
550
625
680
(V)
14
18
22
26
31
38
45
56
66
160
175
180
200
230
250
275
300
330
370
.385
420
470
505
560
615
640
675
745
825
895
I
TM
(A)
2000
2000
2000
2000
2000
2000
2000
2000
8000
12000
12000
12000
12000
12000
12000
12000
12000
12000
12000
12000
12000
12000
12000
12000
12000
12000
12000
12000
12000
12000
W
TM
(J)
12
15
17
22
26
33
38
43
56
135
170
180
190
200
210
228
275
305
330
350
382
420
430
435
440
450
460
510
560
620
V
C
(V)
36 / 20A
43 / 20A
53 / 20A
65 / 20A
77 / 20A
93 / 20A
110 / 20A
135 /20A
135 / 100A
320 / 100A
340 / 100A
360 / 100A
395 / 100A
455 / 100A
505 /100A
545 / 100A
595 /100A
650 /100A
710 /100A
775 / 100A
840 / 100A
910 /100A
1025 /100A
1120 /100A
1240 /100A
1250 /100A
1350 / 100A
1400 / 100A
1620 /100A
1800 /100A
V
N(DC)
min. V
N(DC)
max.
(V)
16
20
24
30
35
42
50
61
74
170
185
198
216
255
270
297
324
351
387
423
459
522
558
612
675
702
738
819
900
962
(V)
20
24
30
36
43
52
62
75
90
207
225
242
264
311
330
363
396
429
473
517
561
638
682
748
825
858
902
1001
1100
1175
C
(pF)
27000
20000
15000
12200
10000
9350
8000
6800
5100
1800
1700
1600
1500
1300
1200
1100
1050
1000
950
900
800
720
710
680
620
560
530
440
425
380
TVZ : Thermo-Fuse Varistor
DERATINGS AND SPECIFICATIONS
MAXIMUM RATINGS
MAXIMUM
CONTINUOUS
WORKING
VOLTAGE
MAXIMUM
NON-
SURGE
CURRENT
(8/20μs)
MAXIMUM
NON-
SURGE
ENERGY
(10/1000μs)
MAXIMUM
CLAMPING
SPECIFIED
CURRENT
(8/20μs)
SPECIFICATIONS
NOMINAL VOLTAGE
AT 1mA (DC)
CURRENT
@1KHZ
TYPICAL
CAPACITANCE
PART
NUMBER
REPETITIVE REPETITIVE VOLTAGE AT
V
M(AC)
V
M(DC)
(V)
TVZ18E 820KBS
TVZ18E181KBS
TVZ18E201KBS
TVZ18E221KBS
TVZ18E241KBS
TVZ18E271KBS
TVZ18E301KBS
TVZ18E331KBS
TVZ18E361KBS
TVZ18E391KBS
TVZ18E431KBS
TVZ18E471KBS
TVZ18E511KBS
TVZ18E561KBS
TVZ18E621KBS
TVZ18E681KBS
TVZ18E751KBS
TVZ18E781KBS
TVZ18E821KBS
TVZ18E911KBS
TVZ18E102KBS
TVZ18E112KBS
(V)
I
TM
(A)
W
TM
(J)
V
C
(V)
V
N(DC)
min. V
N(DC)
max.
(V)
(V)
C
(pF)
50
120
130
140
150
180
195
210
230
250
275
300
320
360
390
420
460
485
510
550
625
680
66
160
175
180
200
230
250
275
300
330
370
.385
420
470
505
560
615
640
675
745
825
895
6500
9000
9000
9000
9000
9000
9000
9000
9000
9000
9000
9000
9000
9000
9000
9000
9000
9000
9000
9000
9000
9000
56
135
140
150
155
163
170
190
220
245
270
290
314
330
345
355
365
378
388
415
430
440
135 / 80A
320 / 80A
340 / 80A
360 / 80A
395 / 80A
455 / 80A
505 /80A
545 / 80A
595 /80A
650 /80A
710 /80A
775 / 80A
840 / 80A
910 /80A
1025 /80A
1120 /80A
1240 /80A
1250 /80A
1350 / 80A
1400 / 80A
1620 /80A
1800 /80A
74
170
185
198
216
255
270
297
324
351
387
423
459
522
558
612
675
702
738
819
900
962
90
207
225
242
264
311
330
363
396
429
473
517
561
638
682
748
825
858
902
1001
1100
1175
4300
1300
1270
1220
1200
1050
1000
950
870
800
730
660
570
560
540
500
460
400
310
300
285
260
TVZ : Thermo-Fuse Varistor
DERATINGS AND SPECIFICATIONS
MAXIMUM RATINGS
MAXIMUM
CONTINUOUS
WORKING
VOLTAGE
MAXIMUM
NON-
SURGE
CURRENT
(8/20μs)
MAXIMUM
NON-
SURGE
ENERGY
(10/1000μs)
MAXIMUM
CLAMPING
SPECIFIED
CURRENT
(8/20μs)
SPECIFICATIONS
NOMINAL VOLTAGE
AT 1mA (DC)
CURRENT
@1KHZ
TYPICAL
CAPACITANCE
PART
NUMBER
REPETITIVE REPETITIVE VOLTAGE AT
V
M(AC)
V
M(DC)
(V)
TVZ25D201KBS
TVZ25D221KBS
TVZ25D241KBS
TVZ25D271KBS
TVZ25D301KBS
TVZ25D331KBS
TVZ25D361KBS
TVZ25D391KBS
TVZ25D431KBS
TVZ25D471KBS
TVZ25D511KBS
TVZ25D561KBS
TVZ25D621KBS
TVZ25D681KBS
TVZ25D751KBS
TVZ25D781KBS
TVZ25D821KBS
TVZ25D911KBS
TVZ25D102KBS
TVZ25D112KBS
(V)
I
TM
(A)
W
TM
(J)
V
C
(V)
V
N(DC)
min. V
N(DC)
max.
(V)
(V)
C
(pF)
130
140
150
180
195
210
230
250
275
300
320
360
390
420
460
485
510
550
625
680
175
180
200
230
250
275
300
330
370
.385
420
470
505
560
615
640
675
745
825
895
18000
18000
18000
18000
18000
18000
18000
18000
18000
18000
18000
18000
18000
18000
18000
18000
18000
18000
18000
18000
200
225
235
245
255
270
315
342
370
390
422
460
495
515
530
540
550
600
630
700
340 / 100A
360 / 100A
395 / 100A
465 / 100A
505 /100A
540
/ 100A
595 /100A
650 /100A
710 /100A
775 / 100A
840 / 100A
910 /100A
1025 /100A
1120 /100A
1240 /100A
1240/100A
1350 / 100A
1400 / 100A
1620 /100A
1800 /100A
185
198
216
255
270
297
324
351
387
423
459
522
558
612
675
702
738
819
900
962
225
242
264
311
330
363
396
429
473
517
561
638
682
748
825
858
902
1001
1100
1175
3600
3300
3050
2600
2400
2200
2050
1900
1700
1600
1400
1200
1180
1100
1000
980
920
880
760
650
FPGA/CPLD
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