Metal Oxide Varistor：
：：
：TVT Type
Thermally Protected Varistor Series
THINKING ELECTRONIC INDUSTRIAL CO., LTD.
1
www.thinking.com.tw
2011.05
All specifications are subject to change without noice.
Features
1. RoHS compliant
2. 2 leaded or 3 leaded thermally protected metal oxide varistor,
Three-leaded version available for indication purposes.
3. Body size: 14 and 20 mm in diameter
4. Working voltage: 130 ~ 750 Vac
5. Patent: US 7,453,681
6. Agency approval:
- UL& cUL 1449 3
rd
: TVT14201~TVT14112, TVT20201~TVT20112
- TUV: TVT14201~TVT14122, TVT20201~TVT20122
7. Meets UL 1449 3
rd
test item 39.4 abnormal over- voltage test (10A, 5A, 2.5A, 0.5A and 0.125A).
Recommended Applications
1. TVSS modules
2. Uninterruptible power supplies
3. Power supplies
4. Lighting products
5. Communication products
Part Number Code
T V T 1 4 2 0 1 K A K G B 0 0 1
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
Product Type
TVT
THINKING Varistor
TVT type
Varistor Voltage(V
1mA
)
180
18x10
0
V=18V
241
24x10
1
V=240V
102
10x10
2
V=1000V
Terminal Number
A
2 terminals
B
3 terminals
Tolerance of V
1mA
A 0~+10%
B 0~-10%
J ±5%
K ±10%
Optional Suffix
001~999
Packaging
B
Bulk
Disc Size
14
Φ14mm
20
Φ20mm
Terminal Appearance
11:Wire Diameter & Pitch 12:Lead Type
K
Φ0.8mm, pitch:7.5mm
(ForΦ14, Φ20, and Φ22)
G
Round wire ,straight lead
L Φ1.0mm, pitch:10mm
(ForΦ25 only) O
Round wire, outer kink lead
M
Φ1.5mm, pitch:15mm
(For Φ32 only)
I
Round wire, inner kink lead
AU
Flat wire (For 34*34)
Metal Oxide Varistor：
：：
：TVT Type
Thermally Protected Varistor Series
THINKING ELECTRONIC INDUSTRIAL CO., LTD.
2
www.thinking.com.tw
2011.05
All specifications are subject to change without noice.
Structure and Dimensions
Two-Terminal Type
Three-Terminal Type
Series
Lead Type D P P1 H H1 dΦ Tmax
TVT14
Two terminals 15.5~19.5
6.5~8.5
18.5~22
0.75~0.85
TVT14
Three terminals
15.5~19.5
6.5~8.5
4.0~6.0
18.5~22
7.0~18 0.75~0.85
TVT20
Two terminals 19.5~23.5
6.5~8.5
21.5~27
0.75~0.85
TVT20
Three terminals
19.5~23.5
6.5~8.5
4.0~6.0
21.5~27
12.5~18
0.75~0.85
Please Refer to
Electrical
Characteristics
Electrical Characteristics
Max.
Energy
Varistor Voltage
（＠1mA DC）
Max.
Continuous
Voltage
Max.
Peak Current
(8/20µs)
Max.
Clamping Voltage
10/1000µs
2ms
Typical
Capacitance
@1KHZ
Rated
Power Thickness
V
1mA
V
AC(rms)
V
DC
1
time
2
times
V
P
I
P
W
max
C P T
max
Part No.
(V) (V) (V) (A) (A) (V) (A) (J) (pF) (W) (mm)
TVT14201
200(180~220)
130 170 6000
4500
340 50 77 55 700 0.6 8.0
TVT20201
200(180~220)
130 170 10000
6500
340 100 140 100 1460 1 10.3
TVT14221
220(198~242)
140 180 6000
4500
365 50 86 62 640 0.6 8.1
TVT20221
220(198~242)
140 180 10000
6500
365 100 155 110 1320 1 10.4
TVT14241
240(216~264)
150 200 6000
4500
395 50 94 68 580 0.6 8.2
TVT20241
240(216~264)
150 200 10000
6500
395 100 170 120 1200 1 10.5
TVT14271
270(243~297)
175 225 6000
4500
455 50 110 80 520 0.6 8.4
TVT20271
270(243~297)
175 225 10000
6500
455 100 190 135 1100 1 10.7
TVT14301
300(270~330)
195 250 6000
4500
500 50 118 85 480 0.6 8.6
TVT20301
300(270~330)
195 250 10000
6500
500 100 205 145 1000 1 10.9
TVT14331
330(297~363)
215 275 6000
4500
550 50 127 90 450 0.6 8.8
TVT20331
330(297~363)
215 275 10000
6500
550 100 215 155 950 1 11.1
Metal Oxide Varistor：
：：
：TVT Type
Thermally Protected Varistor Series
THINKING ELECTRONIC INDUSTRIAL CO., LTD.
3
www.thinking.com.tw
2011.05
All specifications are subject to change without noice.
Max.
Energy
Varistor Voltage
（＠1mA DC）
Max.
Continuous
Voltage
Max.
Peak Current
(8/20µs)
Max.
Clamping
Voltage
10/1000µs
2ms
Typical
Capacitance
@1KHZ
Rated
Power Thickness
V
1mA
V
AC(rms)
V
DC
1
time
2
times
V
P
I
P
W
max
C P T
max
Part No.
(V) (V) (V) (A) (A) (V) (A) (J) (pF) (W) (mm)
TVT14361
360(324~396)
230 300 6000
4500
595 50 137 98 430 0.6 9.0
TVT20361
360(324~396)
230 300 10000
6500
595 100 225 160 900 1 11.3
TVT14391
390(351~429)
250 320 6000
4500
650 50 154 110 390 0.6 9.2
TVT20391
390(351~429)
250 320 10000
6500
650 100 240 170 800 1 11.5
TVT14431
430(387~473)
275 350 6000
4500
710 50 170 120 370 0.6 9.5
TVT20431
430(387~473)
275 350 10000
6500
710 100 270 192 700 1 11.8
TVT14471
470(423~517)
300 385 6000
4500
775 50 192 138 320 0.6 9.8
TVT20471
470(423~517)
300 385 10000
6500
775 100 350 250 620 1 12.1
TVT14511
510(459~561)
320 410 6000
4500
845 50 209 150 290 0.6 10.2
TVT20511
510(459~561)
320 410 10000
6500
845 100 386 275 530 1 12.5
TVT14561
560(504~616)
350 450 6000
4500
930 50 220 158 260 0.6 10.6
TVT20561
560(504~616)
350 450 10000
6500
930 100 400 285 480 1 12.9
TVT14621
620(558~682)
395 510 6000
4500
1025
50 231 165 240 0.6 11.0
TVT20621
620(558~682)
395 510 10000
6500
1025
100 425 305 450 1 13.3
TVT14681
680(612~748)
420 560 6000
4500
1120
50 242 172 230 0.6 11.4
TVT20681
680(612~748)
420 560 10000
6500
1120
100 455 325 440 1 13.7
TVT14751
750(675~825)
465 615 6000
4500
1240
50 247 175 220 0.6 11.0
TVT20751
750(675~825)
465 615 10000
6500
1240
100 509 365 420 1 14.1
TVT14781
780(702~858)
485 640 6000
4500
1290
50 260 180 200 0.6 11.1
TVT20781
780(702~858)
485 640 10000
6500
1290
100 515 350 400 1 14.4
TVT14821
820(738~902)
510 670 6000
4500
1355
50 270 192 180 0.6 11.3
TVT20821
820(738~902)
510 670 10000
6500
1355
100 475 340 390 1 14.6
TVT14911
910(819~1001)
550 745 6000
4500
1500
50 280 200 170 0.6 11.6
TVT20911
910(819~1001)
550 745 10000
6500
1500
100 509 365 360 1 14.9
TVT14951
950(855~1045)
575 765 6000
4500
1570
50 290 210 160 0.6 12.0
TVT20951
950(855~1045）
575 765 10000
6500
1570
100 530 380 340 1 15.3
TVT14102
1000(900~1100)
625 825 6000
4500
1650
50 305 218 150 0.6 13.4
TVT20102
1000(900~1100)
625 825 10000
6500
1650
100 560 400 330 1 15.7
TVT14112
1100(990~1210)
680 895 6000
4500
1815
50 340 242 140 0.6 14.3
TVT20112
1100(990~1210)
680 895 10000
6500
1815
100 610 435 310 1 15.9
TVT14122
1200(1080~1320)
750 980 6000
4500
2000
50 350 260 130 0.6 14.6
TVT20122
1200(1080~1320)
750 980 10000
6500
2000
100 620 450 290 1 16.3
Metal Oxide Varistor：
：：
：TVT Type
Thermally Protected Varistor Series
THINKING ELECTRONIC INDUSTRIAL CO., LTD.
4
www.thinking.com.tw
2011.05
All specifications are subject to change without noice.
Operating Temperature vs.
■
Surge Current Standard Waveform
Power Derating Curve
Lead Configuration
Two-leaded type
Three-leaded type
■ Typical Application Circuit
Current(%)
Time
100
0
LCT=-40
LUT=+85
1
10
Tamb(℃)
2
1
3
1
2
3
Monitor
Lead
2
Thermal
Fuse
Element
1
MOV
3
Max. Power Rating (%)
Current Fuse
Thermally
Varistor
TVT Series
Monitor Lead
LED
R
MOV
Thermal
fuse
element
Circuit to be
protected
Power
Input
L
N
Metal Oxide Varistor：
：：
：TVT Type
Thermally Protected Varistor Series
THINKING ELECTRONIC INDUSTRIAL CO., LTD.
5
www.thinking.com.tw
2011.05
All specifications are subject to change without noice.
Max. Surge Current Derating Curves
TVT14201 ~ TVT14112
Max. Surge Current (A)
0.1
1
10
100
1000
10000
10 100 1000 10000
1
2
10
10
2
10
3
10
4
10
5
10
6
Impulse Width (µs)
0.1
1
10
100
1000
10000
10 100 1000 10000
1
2
10
10
2
10
3
10
4
10
5
10
6
TVT20201 ~ TVT20112
Max. Surge Current (A)
Impulse Width (µs)
Metal Oxide Varistor：
：：
：TVT Type
Thermally Protected Varistor Series
THINKING ELECTRONIC INDUSTRIAL CO., LTD.
6
www.thinking.com.tw
2011.05
All specifications are subject to change without noice.
Max. Leakage Current and Max. Clamping Voltage Curves
10
100
1000
10000
Current(A)
Voltage(V)
TVT14122
TVT14112
TVT14102
TVT14951
TVT14911
TVT14821
TVT14781
TVT14751
TVT14681
TVT14621
TVT14561
TVT14511
TVT14471
TVT14431
TVT14391
TVT14361
TVT14331
TVT14301
TVT14271
TVT14241
TVT14221
TVT14201
Max. Leakage Current
Max. Clamping Voltage
10
-6
10
-5
10
-4
10
-3
10
-2
10
-1
1
10
1
10
2
10
3
10
4
10
5
Max. Leakage Current and Max. Clamping Voltage Curves (TVT14201 ~ TVT14122)
Max. Leakage Current and Max. Clamping Voltage Curves (TVT20201 ~ TVT20122)
10
100
1000
10000
Current(A)
Voltage(V)
Max. Leakage Current
Max. Clamping Voltage
10
-6
10
-5
10
-4
10
-3
10
-2
10
-1
1
10
1
10
2
10
3
10
4
10
5
TVT20122
TVT20112
TVT20102
TVT20951
TVT20911
TVT20821
TVT20781
TVT20751
TVT20681
TVT20621
TVT20561
TVT20511
TVT20471
TVT20431
TVT20391
TVT20361
TVT20331
TVT20301
TVT20271
TVT20241
TVT20221
TVT20201
Metal Oxide Varistor：
：：
：TVT Type
Thermally Protected Varistor Series
THINKING ELECTRONIC INDUSTRIAL CO., LTD.
7
www.thinking.com.tw
2011.05
All specifications are subject to change without noice.
Soldering Recommendation
Wave Soldering Profile
Recommended Reworking Conditions With Soldering Iron
Item Conditions
Temperature of Soldering Iron-tip 360℃ (max.)
Soldering Time 3 sec (max.)
Distance from Varistor 2 mm (min.)
Temperature
130±20℃
260℃ max.
Tamb
Cooling Soldering
Preheating
Time
30~90 sec. ＜1 sec. ＜10 sec.
Note 1
Note 2
Note 3
Note 1: (1~3℃)/sec
Note 2: Approx. 200℃/sec
Note 3: 5℃/sec. (Max)
Metal Oxide Varistor：
：：
：TVT Type
Thermally Protected Varistor Series
THINKING ELECTRONIC INDUSTRIAL CO., LTD.
8
www.thinking.com.tw
2011.05
All specifications are subject to change without noice.
■
Reliability
Item Standard Test Conditions / Methods Specifications
Tensile
Strength of
Terminals IEC60068-2-21
Gradually applying the force specified and keeping the unit fixed for 10±1 sec.
For TVT14~TVT32 Series
Terminal diameter
Force
(mm)
(Kg)
0.5<d≦
0.8
1.0
0.8<d≦
1.25
2.0
1.25<d
4.0
For TVT34 Series
Terminal cross-sectional
Terminal diameter
Force
area (mm
2
)
(mm)
(Kg)
0.5<S 1.2 ≦
0.8<d 1.25 ≦
2.0
1.2<S
1.25<d
4.0
No visible damage
│V/V△
1mA
│5%≦
Bending
Strength of
Terminals IEC 60068-2-21
Hold specimen and apply the force specified below to each lead. Bend the
specimen to 90°, then return to the original positi on. Repeat the procedure in
the opposite direction.
For TVT14~TVT32 Series
Terminal diameter Force
(mm) (Kg)
0.5<d≦
0.8
0.5
0.8<d≦1.25 1.0
1.25<d 2.0
For TVT34 Series
Terminal cross-sectional
Terminal diameter
Force
area (mm
2
)
(mm)
(Kg)
0.2<S 0.5≦
0.5<d 0.8≦
0.5
0.5<S 1.2≦
0.8<d 1.25≦
1.0
1.2<S
1.25<d
2.0
No visible damage
│V/V△
1mA
│5%≦
Vibration IEC 1051-1 Frequency range: 10 ~ 55 Hz
Amplitude: 0.75mm or 98 m/s
2
Direction: 3 mutually perpendicular directions,2hrs each.
│V/V△
1mA
│5%≦
No visible damage
Solderability IEC 60068-2-20
235±5℃ , 2±0.5 sec At least 95% of
terminal electrode is
covered by new solder
Resistance to
Soldering Heat
IEC 60068-2-20
260±5℃ , 5±1 sec ∣△V/V
1mA
∣≦ 5 %
No visible damage
High
Temperature
Storage IEC60068-2-2
110±5℃ x 1000± 24 hrs ∣△V/V
1mA
∣≦ 5 %
Damp Heat,
Steady State IEC 60068-2-3
a. 40±2 , 90 ~ 95 % RH, 1344 hrs℃
b. 40±2 , ℃90 ~ 95 % RH, at 10%Vdc,1344 hrs ∣V/V△
1mA
│10%≦
No visible damage
Rapid Change of
Temperature*1
IEC 60068-2-14
The conditions shown below shall be repeated 5 cycles
Step Temperature (℃) Period (minutes)
1 -40±3 30±3
2 Room temperature 5±3
3 85±2 30±3
4
Room
temperature
5±3
∣△V/V
1mA
∣≦ 5 %
No visible damage
Metal Oxide Varistor：
：：
：TVT Type
Thermally Protected Varistor Series
THINKING ELECTRONIC INDUSTRIAL CO., LTD.
9
www.thinking.com.tw
2011.05
All specifications are subject to change without noice.
Item Standard Test Conditions / Methods Specifications
Endurance at
Upper Category
Temperature IEC61051-4.20
85±2℃, 1000±24 hrs at V
DC
or V
rms
(Max. Allowable Voltage) ∣△V/V
1mA
∣≦ 10 %
R≧1000MΩ
No visible damage
Low
Temperature
Storage
(Optional) CECC42000
–40±5℃, 1000±24 hrs ∣△V/V
1mA
∣≦ 5%
8/20µs Surge
Life CECC42000
8/20 µs waveform, 10,000 surge currents, unipolar, interval 10 secs amplitude
corr. to max. Surge current derating curves for 20 µs. ∣△V/V
1mA
∣≦ 10 %
No visible damage
Varistor
Voltage Temp.
Coefficient Specification
Standard
V
1mA
at 85℃ - V
1mA
at 25℃
x
1
x 100 ( ﹪/ ℃)
V
1mA
at 25℃
60
-0.05≦T
C
≦0 (﹪/℃)
Voltage Proof IEC61051 Metal balls method, 2500 V
ac
1 min No visible damage
Limited current
abnormal
overvoltage test
UL1449
3rd
Test voltage:
Varistor voltage Test Voltage (V)
201-391 240 Vac
431-621 480 Vac
681-122 600 Vac
Each test voltage is applied with a short circuit current of 0.5A , 2.5A ,5A and ,
10A respectively across the varistor.
The power supply is to incorporate a series variable resistor that can be
adjusted to obtain the short-circuit current.
The varistor must be
energized for 7 hours,
or until the varistor
becomes dis
connected
from the AC Line.
The cheesecloth
draped on the varistor
shall not be charring,
glowing, or flaming.
There are no any live
parts to be accessibility
after testing.
Packaging
14 and 20 mm :
Bulk Packing
Disc Size (mm) Quantity (PCS/ Bag)
14Φ 50
20Φ 20
Storage Conditions of Products
Storage Conditions :
1. Storage temperature: -10℃~+40℃
2. Relative humidity: ≦75%RH
3. Keep away from corrosive atmosphere and sunlight.
●
Period of Storage: 1 year.
Metal Oxide Varistor：
：：
：TVT Type
Thermally Protected Varistor Series
THINKING ELECTRONIC INDUSTRIAL CO., LTD.
10
www.thinking.com.tw
2011.05
All specifications are subject to change without notice.
Cross Reference
Dimensions
：
：：
：
14mm
THINKING： The part no. A is for 2- leaded structure and B is for 3- leaded structure.
Littelfuse： The part no. E is for 2- leaded structure and M is for 3- leaded structure.
EPCOS： 3- Leaded structure series only.
Walsin： The part no. B is for 2- leaded structure and C is for 3- leaded structure.
Size(mm)
Vac(rms)
THINKING Littelfuse EPCOS Walsin
14 130 TVT14201K(A/B) TMOV14RP130(E/M)
ETFV14K130E2 FSR201K(B/C)14ES
14 140 TVT14221K(A/B) TMOV14RP140(E/M)
ETFV14K140E2 FSR221K(B/C)14ES
14 150 TVT14241K(A/B) TMOV14RP150(E/M)
ETFV14K150E2 FSR241K(B/C)14ES
14 175 TVT14271K(A/B) TMOV14RP175(E/M)
ETFV14K175E2 FSR271K(B/C)14ES
14 195 TVT14301K(A/B) TMOV14RP200(E/M)
-- FSR311K(B/C)14ES
14 215 TVT14331K(A/B) -- ETFV14K210E2 FSR331K(B/C)14ES
14 230 TVT14361K(A/B) TMOV14RP230(E/M)
ETFV14K230E2 FSR361K(B/C)14ES
14 250 TVT14391K(A/B) TMOV14RP250(E/M)
ETFV14K250E2 FSR391K(B/C)14ES
14 275 TVT14431K(A/B) TMOV14RP275(E/M)
ETFV14K275E2 FSR431K(B/C)14ES
14 300 TVT14471K(A/B) TMOV14RP300(E/M)
ETFV14K300E2 FSR471K(B/C)14ES
14 320 TVT14511K(A/B) TMOV14RP320(E/M)
ETFV14K320E2 FSR511K(B/C)14ES
14 350 TVT14561K(A/B) -- ETFV14K350E2 FSR561K(B/C)14ES
14 395 TVT14621K(A/B) TMOV14RP385(E/M)
ETFV14K385E2 FSR621K(B/C)14ES
14 420 TVT14681K(A/B) TMOV14RP420(E/M)
ETFV14K420E2 FSR681K(B/C)14ES
14 465 TVT14751K(A/B) TMOV20RP460(E/M)
-- --
14 485 TVT14781K(A/B) -- -- --
14 510 TVT14821K(A/B) -- -- --
14 550 TVT14911K(A/B) -- -- --
14 575 TVT14951K(A/B) -- -- --
14 625 TVT14102K(A/B) -- -- --
14 680 TVT14112K(A/B) -- -- --
14 750 TVT14122K(A/B) -- -- --
Metal Oxide Varistor：
：：
：TVT Type
Thermally Protected Varistor Series
THINKING ELECTRONIC INDUSTRIAL CO., LTD.
11
www.thinking.com.tw
2011.05
All specifications are subject to change without notice.
Dimensions
：
：：
：
20mm
THINKING： The part no. A is for 2- leaded structure and B is for 3- leaded structure.
Littelfuse： The part no. E is for 2- leaded structure and M is for 3- leaded structure.
EPCOS： 3- Leaded structure series only.
Walsin： The part no. B is for 2- leaded structure and C is for 3- leaded structure.
Size(mm)
Vac(rms)
THINKING Littelfuse EPCOS Walsin
20 130
TVT20201K(A/B)
TMOV20RP130(E/M)
ETFV20K130E2 FSR201 K(B/C)20ES
20 140
TVT20221K(A/B)
TMOV20RP140(E/M)
ETFV20K140E2 FSR221 K(B/C)20ES
20 150
TVT20241K(A/B)
TMOV20RP150(E/M)
ETFV20K150E2 FSR241 K(B/C)20ES
20 175
TVT20271K(A/B)
TMOV20RP175(E/M)
ETFV20K175E2 FSR271 K(B/C)20ES
20 195
TVT20301K(A/B)
TMOV20RP200(E/M)
-- FSR311 K(B/C)20ES
20 215
TVT20331K(A/B)
-- ETFV20K210E2 FSR331 K(B/C)20ES
20 230
TVT20361K(A/B)
TMOV20RP230(E/M)
ETFV20K230E2 FSR361 K(B/C)20ES
20 250
TVT20391K(A/B)
TMOV20RP250(E/M)
ETFV20K250E2 FSR391 K(B/C)20ES
20 275
TVT20431K(A/B)
TMOV20RP275(E/M)
ETFV20K275E2 FSR431 K(B/C)20ES
20 300
TVT20471K(A/B)
TMOV20RP300(E/M)
ETFV20K300E2 FSR471 K(B/C)20ES
20 320
TVT20511K(A/B)
TMOV20RP320(E/M)
ETFV20K320E2 FSR511 K(B/C)20ES
20 350
TVT20561K(A/B)
-- ETFV20K350E2 FSR561 K(B/C)20ES
20 395
TVT20621K(A/B)
TMOV20RP385(E/M)
ETFV20K385E2 FSR621 K(B/C)20ES
20 420
TVT20681K(A/B)
TMOV20RP420(E/M)
ETFV20K420E2 FSR681 K(B/C)20ES
20 465
TVT20751K(A/B)
-- ---- FSR751 K(B/C)20ES
20 485
TVT20781K(A/B)
-- FSR781K(B/C)20ES
20 510
TVT20821K(A/B)
TMOV20RP510(E/M)
-- FSR821 K(B/C)20ES
20 550
TVT20911K(A/B)
TMOV20RP550(E/M)
-- FSR911 K(B/C)20ES
20 575
TVT20951K(A/B)
TMOV20RP575(E/M)
-- FSR951K(B/C)20EL
20 625
TVT20102K(A/B)
TMOV20RP625(E/M)
-- FSR102 K(B/C)20ES
20 680
TVT20112K(A/B)
-- -- FSR112 K(B/C)20ES
20 750
TVT20122K(A/B)
TMOV20RP750(E/M)
-- FSR122K(B/C)20EL
