2PRO DEVICES
The
2Pro
product
is
an
integrated
overcurrent/
over-voltage protection device. The RoHS-compliant
component incorporates PolySwitch PPTC (Polymeric
Positive Temperature Coefficient) technology and MOV
(Metal Oxide Varistor) technology in a single device to
help reduce board space requirements and component
count.
Damage to telephony communications equipment can be
caused by various sources including lightning, electrostatic
discharge (ESD), power contact and induction with AC
lines. The 2Pro TM2P-10271 devices help provide current
limiting during overcurrent events and voltage clamping
during overvoltage events. After a fault condition is
removed and power is cycled, 2Pro devices will reset so
that the equipment remains operational.
The 2Pro device helps address the need for resettable circuit protection devices for use in cost-sensitive PSTN (Public
Switched Telephone Network) and VoIP (Voice over Internet Protocol) telephony equipment. The widespread use of
VoIP gateways in homes and enterprise environments as the primary means of voice delivery requires the utmost safety
and reliability in equipment. 2Pro circuit protection devices help manufacturers comply with global safety standards,
including UL 60950, TIA-968-A, IEC 60950 and ITU-T K.20/K.21. The UL 497A listed protector also helps provide ESD
protection.
BENEFITS
• Single device helps reduce component count and
footprint
• Helps reduce warranty returns
• Helps equipment comply with surge tests per:
TIA-968-A, IEC 60950, ITU-T K.20/K.21
• Helps simplify UL 60950 testing
• Helps equipment comply with UL 60950
APPLICATIONS
• Cordless telephones
• VoIP gateways
• Fax machines
• Data modems
• Set-top boxes
• Security systems
• MDF modules
• Analog and ISDN linecards
FEATURES
• RoHS compliant
• Halogen free
(refers to: Br
≥
900ppm, Cl
≥
900ppm, Br+Cl
≥
1500ppm)
• Single overcurrent, overvoltage and ESD protection
device
• Resettable overcurrent protection
RoHS Compliant, ELV Compliant
HF
Halogen Free
Specifications subject to change without notice. ©2016 Littelfuse, Inc.
41
PolySwitch Resettable Devices
Radial-Leaded Devices
Table 2P1 — Electrical Characteristics
Overcurrent (terminals 1 – 2) — Performance ratings @ 20°C
I
HOLD
(A)
0.15
0.15
0.35
0.75
I
TRIP
(A)
0.30
0.30
0.75
1.50
Resistance
†
(Ω)
R
MAX
R
1 MAX*
14.00
14.00
2.20
0.80
16.00
16.00
2.80
1.00
Time-to-
Trip (s)
†
Typ
Max
0.90
0.90
0.50
0.90
3.00
3.00
2.00
1.20
(@1A)
(@1A)
(@3A)
(@7A)
(1)
(2)
Part Number
TM2P-10271
LVM2P-015R10431
LVM2P-035R14431
LVM2P-075R14431
R
MIN
6.50
6.50
1.40
0.37
Electrical Schematic
Overvoltage (Terminals 2 – 3)
Varistor Voltage
V @ 1mA
Part Number
DC (V)
Tolerance
TM2P-10271
LVM2P-015R10431
LVM2P-035R14431
LVM2P-075R14431
260
430
430
430
+14% -7%
+10% -10%
+10% -10%
+10% -10%
DC Resistance
@ 100V
(MΩ)
>10
>10
>10
>10
Maximum
Clamping
(V)
455 (@25A)
710 (@ 25A)
710 (@ 50A)
710 (@ 50A)
Rated
Wattage
(W)
0.25
0.25
0.60
1.00
(3)
* Maximum device resistance at 20°C measured 1 hour post trip.
† Corresponds to operation below varistor voltages.
Table 2P2 — Dimensions in Millimeters and (Inches*)
Part
Number
TM2P-10271
mm
in*
LVM2P-015R10431
mm
in*
LVM2P-035R14431
mm
in*
LVM2P-075R14431
mm
in*
—
—
16.0
(0.63)
—
—
21.0
(0.83)
—
—
7
.4
(0.29)
3.0
(0.12)
5.0
(0.20)
2.5
(0.10)
2P3
—
—
16.0
(0.63)
—
—
21.0
(0.83)
—
—
7
.4
(0.29)
3.0
(0.12)
5.0
(0.20)
5.1
(0.20)
2P2
—
—
12.0
(0.47)
—
—
17
.0
(0.67)
—
—
7
.4
(0.29)
8.5
(0.34)
11.5
(0.45)
5.1
(0.20)
2P2
—
—
12.0
(0.47)
—
—
15.0
(0.59)
—
—
6.6
(0.26)
6.0
(0.24)
—
—
2.5
(0.10)
—
—
12.0
(0.47)
2P1
A
Min
Max
Min
B
Max
Min
C
Max
Min
D
Max
E
Nom
Min
F
Max
Figure
* The dimensions in inches are rounded approximations.
Figures 2P1-2P3 — Dimension Figures
Figure 2P1
A
F
C
Figure 2P2
A
C
Figure 2P3
A
C
B
B
MOV
B
MOV
MOV
PPTC
D
PPTC
D
PPTC
D
E
Center to Center
Typ
E
E
Center to Center
Typ
E
Center to Center
Typ
(3) (2) (1)
(3) (2) (1)
(3) (2) (1)
42
Specifications subject to change without notice. ©2016 Littelfuse, Inc.
HF
Halogen Free
RoHS Compliant, ELV Compliant
PolySwitch Resettable Devices
Radial-Leaded Devices
Figure 2P4 — Typical Time-to-Trip at 25°C
1000
C
100
E
A
B
D
F
Time-to-Trip (s)
10
A - LVM2P-015R10431 PPTC only
B - LVM2P-015R10431 LVM2P at 415V
C - LVM2P-035R14431 PPTC only
D - LVM2P-035R14431 LVM2P at 415V
E - LVM2P-075R14431 PPTC only
F - LVM2P-075R14431 LVM2P at 415V
1
0.1
0.01
0.1
1
10
100
Short Circuit Current (A)
Table 2P3 — Physical Characteristics and Environmental Specifications
Physical Characteristics
Lead Material
Flammability
Soldering Characteristics
Solder Heat Withstand
Test
Passive Aging
Humidity Aging
Active Aging
Thermal Shock
Solvent Resistance
Tin-plated Copper, 0.33mm
2
(22AWG), 0.64mm (0.025in)
IEC 695-2-2 Needle Flame Test for 20s
ANSI Approved IPC/EIA/JEDEC J-STD-002, Category 3
per IEC-STD 68-2-20, Test Tb, Method1A, Condition B, can withstand 10 Seconds at 260°C ± 5°C
Conditions
60°C, 1000 Hours / 85°C, 1000 Hours
85°C, 85% RH, 500 Hours
60°C, 90% RH, 60VDC Bias,1000 Hours
125°C, -55°C (10 Times)
MIL-STD-202, Method 215K
Environmental Specifications
Note:
Storage conditions: 40°C max, 70% RH max, devices should remain in original sealed bag prior to use.
Devices may not meet specified values if these storage conditions are exceeded.
RoHS Compliant, ELV Compliant
HF
Halogen Free
Specifications subject to change without notice. ©2016 Littelfuse, Inc.
43
PolySwitch Resettable Devices
Radial-Leaded Devices
Table 2P4 — Packaging and Marking Information
Part Number
TM2P-10271
TM2P-10271-2
LVM2P-015R10431
LVM2P-035R14431
LVM2P-075R14431
Bag Quantity
250
—
250
250
250
Tape and Reel Quantity
—
1,000
—
—
—
Standard Package
3,000
5,000
3,000
3,000
3,000
Part Marking
1027 & Batch #
1027 & Batch #
C431 & Batch #
A431 & Batch #
B431 & Batch #
Table 2P5 — Ordering Information
Bulk
250
3,000
Tape & Reel
1,000
5,000
pieces/bag
pieces/box
pieces/reel
pieces/box
Wave Soldering and Rework Recommendations
Recommended Wave Soldering for Radial-leaded Devices
• Soldering temperature profile
(Temperature characteristic at component terminal with dual
wave soldering)
Rework
• If a device is removed from the board, it should be discarded
and replaced with a new device
Figure 2P5
300
250
245˚C ... 260˚C
Temperature (˚C)
200
150
100
50
0
0
50
100˚C ... 130˚C
Forced Cooling
10s
100
Time (s)
150
200
250
44
Specifications subject to change without notice. ©2016 Littelfuse, Inc.
HF
Halogen Free
RoHS Compliant, ELV Compliant
PolySwitch Resettable Devices
Radial-Leaded Devices
Table 2P6 — Tape and Reel Specifications in Millimeters (mm)
2Pro devices are available in tape and reel packaging per EIA 468-B standard.
Description
Carrier Tape Width
Hold Down Tape Width
Top Distance Between Tape Edges
Sprocket Hole Position
Sprocket Hole Diameter
Abcissa to Plane (Kinked Lead)*
Abcissa to Top
Overall Width with Lead Protrusion
Overall Width Without Lead Protrusion
Lead Protrusion
Protrusion of Cut-out
Protrusion Beyond Hold Down Tape
Sprocket Hole Pitch
Pitch Tolerance
Tape Thickness
Tape Thickness with Splice*
Splice Sprocket Hole Alignment
Body Lateral Deviation
Body Tape Plane Deviation
Ordinate to Component Center Lead
Lead Spacing*
Reel Width
Reel Diameter
Space Between Flanges
Arbor Hole Diameter
Core Diameter
Box
Consecutive Missing Pieces*
Empty Places Per Reel*
Note:
*Differs from EIA specification.
EIA Mark
W
W
4
W
6
W
5
D
0
H
0
H
1
—
—
L
1
L
I
2
P
0
—
t
t
1
—
Dh
Dp
P
2
F
1
, F
2
w
2
a
w
1
c
n
—
—
—
IEC Mark
W
W
0
W
2
W
1
D
0
H
0
H
1
C
1
C
2
I
1
L
I
2
P
0
—
t
—
—
Dh
Dp
P
2
F
1
, F
2
w
d
—
f
h
—
—
—
Dimension (mm)
18
5
3
9
4
16
32.2
43.2
42.5
1.0
11
Not Specified
12.7
20 Consecutive
0.9
2.0
0
0
0
6.35
2.54
56
370
51.2
26
80
56/372/372
3 Max
Not Specified
Tolerance
-0.5/ +1.0
Min
Max
-0.5/ +0.75
±0.2
-0.5/0.6
Max
Max
Max
Max
Max
—
±0.3
±1
Max
Max
±0.3
±0.1
±1.3
±0.7
-0.1/+0.4
Max
Max
Max
±12.0
Max
Max
—
—
Figure 2P6 — EIA Referenced Taped Component Dimensions
h
h
p
p
Reference Plane
H
1
P
1
F
A
B
W
4
H
0
W
5
W
H
H
1
C
2
C
1
W
6
L
I
2
L
1
P
0
F
1
F
2
P
2
t
1
D
0
Direction of Unreeling
Cross Section A-B
t
RoHS Compliant, ELV Compliant
HF
Halogen Free
Specifications subject to change without notice. ©2016 Littelfuse, Inc.
45
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