TMOV20R385M Datasheet PDF - Littelfuse
| Part Number | TMOV20R385M | |
| Description | Varistor | |
| Manufacturers | Littelfuse | |
| Logo |  |
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Varistor Products
Radial Lead Varistors > TMOV® and iTMOV® Series
RoHS TMOV® and i TMOV® Varistor Series
Agency Approvals
Description
The Littelfuse TMOV® and iTMOV® thermally protected
varistors represent a new development in integrated
circuit protection. Both versions are comprised of radial
leaded MOVs (Metal Oxide Varistors) with an integrated
thermally activated element designed to open in the
event of overheating due to the abnormal overvoltage,
limited current, conditions outlined in UL1449. The TMOV®
and iTMOV® varistor’s integrated thermal element, in
conjunction with appropriate enclosure design, helps
facilitate TVSS module compliance to UL1449 for both cord
connected and permanently connected applications.
The TMOV® and iTMOV® varistors offer quick thermal
response due to the close proximity of the integrated
thermal element to the MOV body. The integrated
configuration also offers lower inductance than most
discrete solutions resulting in improved clamping
performance to fast overvoltage transients.
The iTMOV® varistor differs from the TMOV® varistor by the
inclusion of a third lead for the purpose of indicating that
the MOV has been disconnected from the circuit. This lead
facilitates connection to monitoring circuitry.
Additionally TMOV® and iTMOV® varistors are wave
solderable, thus simplifying end product assembly by
reducing the the expense and rework associated with hand
soldering operations.
Agency Approval
UL1414
UL14494
UL60691 (selected Tests)
22.2-1
IEC - CECC Spec
IEC - CECC Spec
Agency File
Number
E56529
E75961
E75961SP
LR91788
QC42201-X0001
40021525
Standard
14mm
20mm
√√
√ √1
N/A √ 2
√√
√ √3
√√
RoHS and Lead–free
14mm
20mm
√√
√√
N/A No.3
Pending
Pending
√√
√√
1. Devices with ratings greater than 420VAC are not affected by these abnormal voltage conditions.
2. Regarding thermal cut-offs for ratings up to 420VAC.
3. Under evaluation
4. 'Compliant to UL1449 2nd Edition. 3rd edition pending'.
Accelerated Age Testing: Devices comply with Accelerated aging test requirements per ANSI/IEEE C62.11 and may be used in secondary surge arresters without repeating this test.
Applications
Features
• TVSS Products
• AC Panel Protection
Modules
• AC Line Power Supplies
• Surge Protected
Strip Connectors
• AC Power Meters
• Relocatable AC
Power Taps
• GFCI (Ground Fault
Current Interupter)
• UPS (Uninterruptable
Power Supply)
• White Goods
• Plug-in TVSS
• Inverters
• AC/DC Power Supplies
• RoHS compliant and
Lead–free available
• Patented integrated
thermal protection device
- Patent #US6636403
• Designed to facilitate
compliance to
UL1449 2nd Edition
for TVSS product
• High peak surge current
rating up to 10kA
©2010 Littelfuse, Inc.
Specifications are subject to change without notice.
Please refer to www.littelfuse.com/series/tmov.html for current information.
Revision: June 10, 2010
• Wave solderable
• Standard lead form
and spacing option
• Low leakage
• -55°C to +85°C
operating temp range
• Three-lead version
available for indication
purposes
TMOV® and i TMOV® Varistor Series
|
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Varistor Products
Radial Lead Varistors > TMOV® and iTMOV® Series
Repetitive Surge Capability for 14mm Parts
10000
1000
1
2
100
10
102
Model 14 mm
103
104
105
106
Repetitive Surge Capability for 20mm Parts
10000
2
1000
1
100
10
102
Model 20 mm
103
104
105
106
10 10
1
10
Figure 5
100 1000
Impulse Duration (μs)
NOTE: Average power dissipation of transients should not exceed 0.6W
10000
1
10
Figure 6
100 1000
Impulse Duration (μs)
NOTE: Average power dissipation of transients should not exceed 1.0W
10000
Wave Solder Profile
Because the TMOV® and iTMOV® varistors contain a thermal protection device, care must be taken when soldering the devices into place.
Two soldering methods are possible. Firstly, hand soldering: It is recommended to heat-sink the leads of the device. Secondly, wave solder-
ing: It is critically important that all preheat stage and the solder bath temperatures are rigidly controlled.
Non Lead–free Profile
Lead–free Profile
300
Maximum Wave 240C
250
200
150
100
50
0
0 0.5 1 1.5 2 2.5 3 3.5 4
Figure 7
TIME(MINUTES)
300
Maximum Wave 260C
250
200
150
100
50
0
0 0.5 1 1.5 2 2.5 3 3.5 4
Figure 8
TIME(MINUTES)
Physical Specifications
Lead Material
Soldering
Characteristics
Non Lead–free parts: Solder coated
Copper wire, or Tin–coated Copper wire
Lead–free parts: Tin–coated Copper wire
Solderability per MIL–STD–202,
Method 208E
Insulating Material
Cured, flame retardant epoxy polymer
meets UL94V–0 requirements
Device Labeling
Marked with LF, voltage, UL/CSA logos,
and date code
Environmental Specifications
Operating/Storage
Temperature
Passive Aging
Humidity Aging
Thermal Shock
-40°C to +85°C
+85°C, 1000 hours
+/-10% typical voltage change
+85°C, 85% RH , 1000 hours
+/-10% typical voltage change
+85°C to -40°C 5 times
+/-10% typical voltage change
Solvent Resistance
MIL–STD–202, Method 215F
©2010 Littelfuse, Inc.
Specifications are subject to change without notice.
Please refer to www.littelfuse.com/series/tmov.html for current information.
Moisture Sensitivity
Revision: June 10, 2010
Level 1, J–STD–020C
TMOV® and i TMOV® Varistor Series
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Part DetailsOn this page, you can learn information such as the schematic, equivalent, pinout, replacement, circuit, and manual for TMOV20R385M electronic component. |
| Information | Total 9 Pages | |
| Link URL | [ Copy URL to Clipboard ] | |
| Download | [ TMOV20R385M.PDF Datasheet ] | |
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