TMOV34S251M Littelfuse Inc, TMOV34S251M Datasheet - Page 5

• Manufacturer Part Number: TMOV34S251M
• Description: VARISTOR THERMAL 250V 40KA 20MM
• Manufacturer: Littelfuse Inc
• Series: TMOV34S®r

Specifications of TMOV34S251M

• Varistor Voltage: 429V
• Current-surge: 40kA
• Number Of Circuits: 1
• Maximum Ac Volts: 250VAC
• Maximum Dc Volts: 330VDC
• Energy: 370J
• Package / Case: 34mm Square 3-Lead
• Product: MOV
• Voltage Rating Dc: 330 V
• Voltage Rating Ac: 250 V
• Clamping Voltage: 650 V
• Peak Surge Current: 40 KA
• Surge Energy Rating: 370 J
• Capacitance: 5000 pF
• Operating Temperature Range: - 55 C to + 85 C
• Mounting: Radial
• Current Rating: 40000 A
• Dimensions: 37 mm L x 11.8 mm H
• Termination Style: Radial
• Tolerance: 20 %
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Contains lead / RoHS non-compliant

©2011 Littelfuse, Inc.
Specifications are subject to change without notice.
Please refer to www.littelfuse.com/series/tmov34s.html for current information.
Typical time to open circuit under UL1449 Abnormal
Overvoltage Limited Current Test
Figure 1
are intended, in conjunction with appropriate enclosure
design, to help facilitate TVSS module compliance to
overvoltage conditions, the units will exhibit substantial
heating and potential venting prior to opening. Modules
should be designed to contain this possibility. Application
testing is strongly recommended.
V–I Characteristic Curves for TMOV34S
Figure 4
0.1
10
1
10
V421
Voltage -
VOLTS
V441
V481
10000
1000
100
1mA
100
Maximum Clamping Voltage
TMOV34S series
®
Time s
Series TMOV34S
V511
10mA
Current - AMPS
1000
V551
100mA
Varistor Products
V571
®
Industrial High Energy Thermally Protected Varistors > TMOV34S
Varistor
Typical
2. A
0. A
0.12 A
A
®
devices
1000
1A
V391
Revision: March 2, 2011
V351 V331 V321
10A
V661
surge current and energy ratings must be reduced as shown.
Figure 2
Pulse Rating Curve
Peak Current & Energy Derating Curve
Figure 3
100A
V681
V301
50,000
20,000
10,000
5,000
2,000
1,000
TA = -55 C to 85C
100
80
60
40
20
500
200
100
0
50
20
10
V271
-55
20
V751
10
10
10
10
INDEFINITE
1000A
2
2
3
4
50
1
V251 V201 V181
60
100
V141
AMBIENT TEMPERATURE (ºC)
10000A
V151
70
IMPULSE DURATION (μs)
V131
80
V111
100000A
10
90
5
10
1,000
6
100
TMOV34S
110
Hx34
120
®
10,000
Varistor Series
130
®
Series