PolySwitch Resettable Devices
– Line-Voltage-Rated Devices
PolySwitch Resettable Devices
Line-Voltage-Rated Devices
PolySwitch LVR devices help protect electric motors and
transformers used in commercial and home appliances
from damage caused by mechanical overloads,
overheating, stall, lost neutral and other potentially
harmful conditions.
The LVR line-voltage product line of polymeric positive
temperature coefficient (PPTC) devices includes
components that are rated for line voltages of 120V
AC
and 240V
AC
, for up to 2A of operating current at 20°C.
They help protect against damage caused by both
overcurrent surges and overtemperature faults, offer low
resistance, and are compatibly sized with fuse solutions.
Unlike traditional fuses, PolySwitch devices do not
require replacement after a fault event. After power has
been removed and the overcurrent condition eliminated,
the circuit is restored to normal operating condition.
Compared to bimetal breakers, they offer greater
flexibility, longer lifespan, and lower electromagnetic
interference (EMI).
The PolySwitch LVR devices’ resettable functionality and latching attributes make them a reliable, cost-effective
circuit protection solution for both intermittent- and continuous-operation motor applications. Their low resistance,
fast time-to-trip, and low profile help circuit designers provide a safe and dependable product, comply with
regulatory agency requirements, and reduce warranty repair costs.
LVR/LVRL series are suitable for line-voltage applications up to a continuous operating voltage of 240V
AC
/120V
AC
.
RoHS versions of all products are available.
Benefits
• Many product choices give engineers more design
flexibility
• Compatible with high-volume electronics assembly
• Assist in meeting regulatory requirements
• Higher voltage ratings allow use in new applications
Features
• RoHS compliant
• Broadest range of radial-leaded resettable devices
available in the industry
• Current ratings from 50mA to 2A
• Line voltage rating of 120V
AC
and 240V
AC
• Agency recognition : UL, CSA, TÜV
• Fast time-to-trip
• Low resistance
10
Applications
• Electromagnetic loads
• Game machines
• Industrial controls
• Lighting ballast
• Loudspeakers
• Medical equipment
• Motors, fans and blowers
• POS equipment
• Satellite video receivers
• Security and fire alarm systems
• Test and measurement equipment
• Transformers
• USB hubs, ports and peripherals
139
Table L1 Product Series - Current Rating, Voltage Rating / Typical Resistance for LVR Devices
Voltage Rating
Hold Current (A)
0.050
0.080
0.120
0.160
0.250
0.330
0.400
0.550
0.750
1.000
1.250
1.350
2.000
25.00Ω
9.800Ω
4.800Ω
3.400Ω
1.700Ω
1.000Ω
0.800Ω
0.590Ω
0.400Ω
0.276Ω
0.209Ω
—
0.110Ω
—
—
—
—
—
—
—
—
0.325Ω
0.224Ω
0.148Ω
0.138Ω
0.097Ω
LVR
240V
AC
/ 120V
AC
LVRL
120V
AC
Table L2 Thermal Derating for LVR Devices [Hold Current (A) at Ambient Temperature (°C)]
Maximum Ambient Temperature
Part Number
LVR/LVRL
LVR005N
LVR008N
LVR012
LVR016
LVR025
LVR033
LVR040
LVR055
LVR075
LVR100
LVR125
LVR200
LVRL075
LVRL100
LVRL125
LVRL135
LVRL200
0.08
0.12
0.18
0.24
0.38
0.50
0.61
0.80
1.23
1.65
2.06
3.30
1.08
1.40
1.80
2.00
3.05
0.06
0.10
0.15
0.20
0.32
0.42
0.51
0.68
0.98
1.30
1.63
2.60
0.93
1.19
1.53
1.65
2.55
0.05
0.08
0.12
0.16
0.25
0.33
0.40
0.55
0.75
1.00
1.25
2.00
0.75
1.00
1.25
1.35
2.00
0.05
0.08
0.12
0.16
0.25
0.33
0.40
0.54
0.74
0.94
1.20
1.97
0.74
0.94
1.20
1.29
1.97
0.04
0.07
0.10
0.13
0.21
0.27
0.33
0.46
0.60
0.80
1.00
1.60
0.64
0.82
1.04
1.12
1.72
0.04
0.06
0.09
0.11
0.18
0.23
0.28
0.40
0.56
0.75
0.94
1.50
0.57
0.73
0.94
1.01
1.55
0.03
0.05
0.07
0.10
0.15
0.20
0.24
0.35
0.49
0.65
0.81
1.30
0.51
0.65
0.83
0.90
1.39
0.03
0.04
0.06
0.08
0.13
0.17
0.20
0.29
0.45
0.60
0.75
1.20
0.44
0.57
0.73
0.78
1.22
0.02
0.03
0.04
0.05
0.09
0.11
0.14
0.22
0.41
0.55
0.69
1.10
0.35
0.45
0.60
0.65
0.98
-20°C
0°C
20°C
25°C
40°C
50°C
60°C
70°C
85°C
10
Figure L1 Thermal Derating Curve for LVR Devices
A =
B =
C =
LVR075-LVR200
LVRL075-LVRL200
LVR005N-LVR055
% of rated hold and trip current
Figure L1
180
170
160
150
140
130
120
110
100
90
80
70
60
50
40
30
-30
-20
-10
0
10
20
30
40
50
60
70
80
A
B
C
A
C
B
90
Ambient Temperature (˚C)
140
RoHS Compliant, ELV Compliant
PolySwitch Resettable Devices
– Line-Voltage-Rated Devices
Table L3 Electrical Characteristics for LVR Devices*
Part
Number
LVR/LVRL
LVR005NK
LVR005NS
LVR008NK
LVR008NS
LVR012K
LVR012S
LVR016K
LVR016S
LVR025K
LVR025S
LVR033K
LVR033S
LVR040K
LVR040S
LVR055K
LVR055S
LVR075S
LVR100S
LVR125S
LVR200S
LVRL075S
LVRL100S
LVRL125S
LVRL135S
LVRL200S
0.05
0.05
0.08
0.08
0.12
0.12
0.16
0.16
0.25
0.25
0.33
0.33
0.40
0.40
0.55
0.55
0.75
1.00
1.25
2.00
0.75
1.00
1.25
1.35
2.00
0.12
0.12
0.19
0.19
0.30
0.30
0.37
0.37
0.56
0.56
0.74
0.74
0.90
0.90
1.25
1.25
1.50
2.00
2.50
4.00
1.52
2.00
2.50
2.70
4.20
240
120
240
120
240
120
240
120
240
120
240
120
240
120
240
120
240
120
240
120
240
120
240
120
240
120
240
120
240
120
240
120
240
240
240
240
120
120
120
120
120
265
135
265
135
265
135
265
135
265
135
265
135
265
135
265
135
265
135
265
135
265
135
265
135
265
135
265
135
265
135
265
135
265
265
265
265
135
135
135
135
135
1.0
20.0
1.0
20.0
1.2
20.0
1.2
20.0
1.2
20.0
1.2
20.0
2.0
20.0
2.0
20.0
3.5
20.0
3.5
20.0
4.5
20.0
4.5
20.0
5.5
20.0
5.5
20.0
7.0
20.0
7.0
20.0
7.5
10.0
12.5
20.0
7.5
10.0
12.5
13.5
20.0
0.9
0.9
0.9
0.9
1.0
1.0
1.4
1.4
1.5
1.5
1.7
1.7
2.0
2.0
3.4
3.4
2.6
2.9
3.3
4.5
1.8
2.2
2.0
2.8
3.9
0.25
0.25
0.40
0.40
0.60
0.60
0.80
0.80
1.25
1.25
1.65
1.65
2.00
2.00
2.75
2.75
3.75
5.00
6.25
10.00
3.75
5.00
6.25
6.75
10.00
10.0
10.0
10.0
10.0
15.0
15.0
15.0
15.0
18.5
18.5
21.0
21.0
24.0
24.0
26.0
26.0
18.0
21.0
23.0
28.0
14.0
13.6
18.0
20.0
36.0
18.500
18.500
7.400
7.400
3.000
3.000
2.500
2.500
1.300
1.300
0.770
0.770
0.600
0.600
0.450
0.450
0.316
0.218
0.165
0.089
0.250
0.179
0.117
0.109
0.075
31.000
31.000
12.000
12.000
6.500
6.500
4.100
4.100
2.100
2.100
1.240
1.240
0.970
0.970
0.730
0.730
0.483
0.334
0.253
0.131
0.400
0.269
0.179
0.167
0.117
65.000
65.000
26.000
26.000
12.000
12.000
7.800
7.800
3.800
3.800
2.600
2.600
1.900
1.900
1.450
1.450
0.839
0.580
0.440
0.221
0.690
0.470
0.320
0.300
0.205
[0.51mm(24)]
[0.51mm(24)]
[0.51mm(24)]
[0.51mm(24)]
[0.51mm(24)]
[0.51mm(24)]
[0.51mm(24)]
[0.51mm(24)]
[0.64mm(22)]
[0.64mm(22)]
[0.64mm(22)]
[0.64mm(22)]
[0.64mm(22)]
[0.64mm(22)]
[0.81mm(20)]
[0.81mm(20)]
[0.81mm(20)]
[0.81mm(20)]
[0.81mm(20)]
[0.81mm(20)]
[0.81mm(20)]
[0.81mm(20)]
[0.81mm(20)]
[0.81mm(20)]
[0.81mm(20)]
I
H
(A)
I
T
(A)
V
MAX†
Operating
Interrupt
(V
AC
)
(V
AC
)
I
MAX†
Interrupt
(A)
P
D Typ
(W)
Max. Time-to-trip
(A)
(s)
R
MIN
(Ω)
R
MAX
(Ω)
R
1MAX
(Ω)
Lead Size
[mm (AWG)]
10
Notes:
: Hold current: maximum current device will pass without interruption in 20°C still air.
I
H
: Trip current: minimum current that will switch the device from low resistance to high resistance in 20°C still air.
I
T
V
MAX
Operating: Maximum continuous voltage device can withstand without damage at rated current.
V
MAX
Interrupt : Under specified conditions this is the highest voltage that can be applied to the device at the maximum interrupt current.
I
MAX
Interrupt : Maximum fault current device can withstand without damage at rated voltage.
: Power dissipated from device when in the tripped state in 20°C still air.
P
D
: Minimum resistance of device as supplied at 20°C unless otherwise specified.
R
MIN
: Maximum resistance of device as supplied at 20°C unless otherwise specified.
R
MAX
: Maximum resistance of device when measured one hour post trip at 20°C unless otherwise specified.
R
1MAX
* Electrical characteristics determined at 20°C.
† See Application Limitations on next page.
RoHS Compliant, ELV Compliant
141
Warning : Application Limitations for the LVR Product Line
1) Users should independently evaluate the suitability of and test each product selected for their own application.
2) This product should not be used in an application where the maximum interrupt voltage or maximum interrupt current can be exceeded
in a fault condition. Operation beyond the maximum ratings or improper use may result in device damage and possible electrical arcing
and flame.
3) A PPTC device is not a fuse - it is a nonlinear thermistor that limits current. Under a fault condition all PPTC devices go into a high resistance
state but do not open circuit, so hazardous voltage may be present at PPTC locations.
4) The devices are intended for protection against damage caused by occasional overcurrent or overtemperature fault conditions and should
not be used when repeated fault conditions or prolonged trip events are anticipated.
5) In most applications power must be removed and the fault condition cleared in order to reset a PPTC device; however under certain
unusual conditions, a PPTC device may automatically reset. PPTC devices should not be used in an application where an automatic reset
could create a safety hazard, such as garbage disposals and blenders. Appropriate qualification testing should be performed.
6) It is the responsibility of the user to determine the need for back up or failsafe protection to prevent damage that may occur in the event
of abnormal function or failure of the PPTC device.
7) Operation in circuits with a large inductance can generate a circuit voltage (Ldi/dt) above the rated voltage of a PPTC device.This product should
not be used in an application where the maximum interrupt voltage or maximum interrupt current can be exceeded by inductive spikes.
8) Devices are not recommended for reflow soldering.
9) Device performance can be impacted negatively if devices are handled in a manner inconsistent with recommended electronic, thermal,
or mechanical procedures for electronic components.
10) PPTC devices are not recommended for installation in applications where the device is constrained such that its PTC properties are
inhibited, for example in rigid potting materials or in rigid housings, which lack adequate clearance to accommodate device expansion.
11) Contamination of the PPTC material with certain silicone-based oils or some aggressive solvents can adversely impact the performance
of the devices.
Figure L2-L5 Dimension Figures for LVR Devices
Figure L2
A
E
Figure L3
A
E
B
B
D
C
C
to
C
L L
C
C
to
C
L L
D
10
Figure L4
A
E
Figure L5
A
E
B
B
D
D
C
C
to
C
L L
C
C
to
C
L L
142
RoHS Compliant, ELV Compliant
PolySwitch Resettable Devices
– Line-Voltage-Rated Devices
Table L4 Dimensions for LVR Devices in Millimeters (Inches)
A
Part Number
LVR/LVRL
LVR005NK
LVR005NS
LVR008NK
LVR008NS
LVR012K
LVR012S
LVR016K
LVR016S
LVR025K
LVR025S
LVR033K
LVR033S
LVR040K
LVR040S
LVR055K
LVR055S
LVR075S
LVR100S
LVR125S
LVR200S
LVRL075S
LVRL100S
LVRL125S
LVRL135S
LVRL200S
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
6.9
(0.27)
6.9
(0.27)
7.2
(0.28)
7.2
(0.28)
8.3
(0.33)
8.3
(0.33)
9.9
(0.39)
9.9
(0.39)
9.6
(0.38)
9.6
(0.38)
11.4
(0.45)
11.4
(0.45)
11.5
(0.46)
11.5
(0.46)
14.0
(0.55)
14.0
(0.55)
11.5
(0.45)
18.7
(0.74)
21.2
(0.84)
24.9
(0.98)
10.9
(0.43)
11.5
(0.45)
14.0
(0.55)
16.3
(0.64)
23.5
(0.93)
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
12.1
(0.48)
9.9
(0.39)
12.4
(0.49)
10.2
(0.40)
12.9
(0.51)
10.7
(0.43)
13.8
(0.54)
12.5
(0.50)
18.8
(0.74)
17.4
(0.69)
19.0
(0.75)
16.5
(0.65)
20.9
(0.82)
19.5
(0.77)
22.4
(0.88)
21.7
(0.85)
23.4
(0.92)
24.4
(0.96)
27.4
(1.08)
33.8
(1.33)
17.0
(0.67)
20.1
(0.79)
21.7
(0.85)
21.7
(0.85)
31.8
(1.25)
4.3
4.3
4.3
4.3
4.3
4.3
4.3
4.3
4.3
4.3
4.3
4.3
4.3
4.3
4.3
4.3
4.1
8.9
8.9
8.9
4.3
4.3
4.3
4.3
9.4
5.8
5.8
5.8
5.8
5.8
5.8
5.8
5.8
5.8
5.8
5.8
5.8
5.8
5.8
5.8
5.8
6.1
11.4
11.4
11.4
5.8
5.8
5.8
5.8
10.9
7.6
(0.30)
7.6
(0.30)
7.6
(0.30)
7.6
(0.30)
7.6
(0.30)
7.6
(0.30)
7.6
(0.30)
7.6
(0.30)
7.6
(0.30)
7.6
(0.30)
7.6
(0.30)
7.6
(0.30)
7.6
(0.30)
7.6
(0.30)
7.6
(0.30)
7.6
(0.30)
5.1
(0.20)
5.1
(0.20)
5.1
(0.20)
5.1
(0.20)
7.6
(0.30)
7.6
(0.30)
7.6
(0.30)
7.6
(0.30)
7.6
(0.30)
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
4.6
(0.18)
4.6
(0.18)
4.6
(0.18)
4.6
(0.18)
3.8
(0.15)
3.8
(0.15)
3.8
(0.15)
3.8
(0.15)
3.8
(0.15)
3.8
(0.15)
3.8
(0.15)
3.8
(0.15)
3.8
(0.15)
3.8
(0.15)
4.1
(0.16)
4.1
(0.16)
4.8
(0.19)
5.1
(0.20)
5.3
(0.21)
6.1
(0.24)
4.1
(0.16)
4.1
(0.16)
4.1
(0.16)
4.1
(0.16)
4.1
(0.16)
L5
L5
L5
L5
L5
L5
L4
L4
L5
L5
L3
L5
L3
L5
L3
L5
L3
L4
L2
L4
L2
L4
L2
L4
L2
(0.17) (0.23)
(0.17) (0.23)
(0.17) (0.23)
(0.17) (0.23)
(0.17) (0.23)
(0.17) (0.23)
(0.17) (0.23)
(0.17) (0.23)
(0.17) (0.23)
(0.17) (0.23)
(0.17) (0.23)
(0.17) (0.23)
(0.17) (0.23)
(0.17) (0.23)
(0.17) (0.23)
(0.17) (0.23)
(0.16) (0.24)
(0.35) (0.45)
(0.35) (0.45)
(0.35) (0.45)
(0.17) (0.23)
(0.17) (0.23)
(0.17) (0.23)
(0.17) (0.23)
(0.37) (0.43)
Min.
Max.
Min.
B
Max.
Min.
C
Max.
Min.
D
Max.
Min.
E
Max.
Figure
10
RoHS Compliant, ELV Compliant
143
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