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
FEATURES
• RoHS compliant
• Halogen free
(refers to: Br≥900ppm, Cl≥900ppm, Br+Cl≥1500ppm)
• Single overcurrent, overvoltage and ESD protection
device
• Resettable overcurrent protection
APPLICATIONS
• Cordless telephones
• VoIP gateways
• Fax machines
• Data modems
• Set-top boxes
• Security systems
• MDF modules
• Analog and ISDN linecards
RoHS Compliant, ELV Compliant HF Halogen Free Specifications subject to change without notice. ©2016 Littelfuse, Inc. 41
A C
B
D
E
E
Center to Center
Typ
MOV
PPTC
(1)(2)(3)
AC
B
D
E
MOV
PPTC
Center to Center
Typ
(1)(2)(3)
A C
B
F
D
E
Center to Center
Typ
MOV
PPTC
(1)(2)(3)
(1) (2)
(3)
Electrical Schematic
Overcurrent (terminals 1 – 2) — Performance ratings @ 20°C
Resistance† Time-to-
IHOLD ITRIP (Ω)Trip (s)†
Part Number (A) (A) R MIN R MAX R1 MAX* Ty p Max
TM2P-10271 0.15 0.30 6.50 14.00 16.00 0.90 3.00 (@1A)
LVM2P-015R10431 0.15 0.30 6.50 14.00 16.00 0.90 3.00 (@1A)
LVM2P-035R14431 0.35 0.75 1.40 2.20 2.80 0.50 2.00 (@3A)
LVM2P-075R14431 0.75 1.50 0.37 0.80 1. 0 0 0.90 1.20 (@7A)
Figures 2P1-2P3 — Dimension Figures
Table 2P2 — Dimensions in Millimeters and (Inches*)
Table 2P1 — Electrical Characteristics
Overvoltage (Terminals 2 – 3)
Varistor Voltage DC Resistance Maximum Rated
V @ 1mA @ 100V Clamping Wattage
Part Number DC (V) Tolerance (MΩ)(V) (W)
TM2P-10271 260 +14% -7% >10 455 (@25A) 0.25
LVM2P-015R10431 430 +10% -10% >10 710 (@ 25A) 0.25
LVM2P-035R14431 430 +10% -10% >10 710 (@ 50A) 0.60
LVM2P-075R14431 430 +10% -10% >10 710 (@ 50A) 1. 0 0
* Maximum device resistance at 20°C measured 1 hour post trip.
† Corresponds to operation below varistor voltages.
Figure 2P1 Figure 2P2 Figure 2P3
Part
Number
A B C D E F Figure
Min Max Min Max Min Max Min Max Nom Min Max
TM2P-10271
mm —12.0 —15.0 —6.6 6.0 —2.5 —12.0 2P1
in* —(0.47) —(0.59) —(0.26) (0.24) —(0.10) —(0.47)
LVM2P-015R10431
mm —12.0 —1 7. 0 —7. 4 8.5 11. 5 5.1 2P2
in* —(0.47) —(0.67) —(0.29) (0.34) (0.45) (0.20)
LVM2P-035R14431
mm —16.0 —21.0 —7. 4 3.0 5.0 5.1 2P2
in* —(0.63) —(0.83) —(0.29) (0.12) (0.20) (0.20)
LVM2P-075R14431
mm —16.0 —21.0 —7. 4 3.0 5.0 2.5 2P3
in* —(0.63) —(0.83) —(0.29) (0.12) (0.20) (0.10)
* The dimensions in inches are rounded approximations.
RoHS Compliant, ELV Compliant
HF Halogen Free
Specifications subject to change without notice. ©2016 Littelfuse, Inc.
42
PolySwitch Resettable Devices
Radial-Leaded Devices
0.1 1 10 10 0
1000
10 0
10
1
0.1
0.01
Time-to-Trip (s)
Short Circuit Current (A)
A
B
C
D
E
F
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
Figure 2P4 — Typical Time-to-Trip at 25°C
Table 2P3 — Physical Characteristics and Environmental Specifications
Physical Characteristics
Lead Material Tin-plated Copper, 0.33mm2 (22AWG), 0.64mm (0.025in)
Flammability IEC 695-2-2 Needle Flame Test for 20s
Soldering Characteristics ANSI Approved IPC/EIA/JEDEC J-STD-002, Category 3
Solder Heat Withstand per IEC-STD 68-2-20, Test Tb, Method1A, Condition B, can withstand 10 Seconds at 260°C ± 5°C
Environmental Specifications
Test Conditions
Passive Aging 60°C, 1000 Hours / 85°C, 1000 Hours
Humidity Aging 85°C, 85% RH, 500 Hours
Active Aging 60°C, 90% RH, 60VDC Bias,1000 Hours
Thermal Shock 125°C, -55°C (10 Times)
Solvent Resistance MIL-STD-202, Method 215K
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
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
Table 2P4 — Packaging and Marking Information
Part Number Bag Quantity Tape and Reel Quantity Standard Package Part Marking
TM2P-10271 250 —3,000 1027 & Batch #
TM2P-10271-2 —1,000 5,000 1027 & Batch #
LVM2P-015R10431 250 —3,000 C431 & Batch #
LVM2P-035R14431 250 —3,000 A431 & Batch #
LVM2P-075R14431 250 —3,000 B431 & Batch #
Table 2P5 — Ordering Information
Bulk 250 pieces/bag
3,000 pieces/box
Tape & Reel 1,000 pieces/reel
5,000 pieces/box
Wave Soldering and Rework Recommendations
Figure 2P5
300
250
200
150
100
50
0050
10s
245˚C ... 260˚C
100˚C ... 130˚C
Forced Cooling
100150 200 250
Temperature (˚C)
Time (s)
RoHS Compliant, ELV Compliant
HF Halogen Free
Specifications subject to change without notice. ©2016 Littelfuse, Inc.
44
PolySwitch Resettable Devices
Radial-Leaded Devices
h
H1P1
W6
W4
H0
H1
C1
C2
F
AB
Reference Plane
Direction of Unreeling
Cross Section A-B
W5
H
W
t
t1
P0F1F2
P2
D0
I2
L
L1
hpp
Table 2P6 — Tape and Reel Specifications in Millimeters (mm)
2Pro devices are available in tape and reel packaging per EIA 468-B standard.
Description EIA Mark IEC Mark Dimension (mm) Tolerance
Carrier Tape Width W W 18 -0.5/ +1.0
Hold Down Tape Width W4 W0 5 Min
Top Distance Between Tape Edges W6 W2 3 Max
Sprocket Hole Position W5 W1 9 -0.5/ +0.75
Sprocket Hole Diameter D0 D0 4 ±0.2
Abcissa to Plane (Kinked Lead)* H0 H0 16 -0.5/0.6
Abcissa to Top H1 H1 32.2 Max
Overall Width with Lead Protrusion — C1 43.2 Max
Overall Width Without Lead Protrusion — C2 42.5 Max
Lead Protrusion L1 I1 1. 0 Max
Protrusion of Cut-out L L 11 Max
Protrusion Beyond Hold Down Tape I2 I2 Not Specified —
Sprocket Hole Pitch P0 P0 12.7 ±0.3
Pitch Tolerance — — 20 Consecutive ±1
Tape Thickness t t 0.9 Max
Tape Thickness with Splice* t1 — 2.0 Max
Splice Sprocket Hole Alignment — — 0 ±0.3
Body Lateral Deviation DhDh0±0.1
Body Tape Plane Deviation DpDp0±1.3
Ordinate to Component Center Lead P2P26.35 ±0.7
Lead Spacing* F1, F2F1, F22.54 -0.1/+0.4
Reel Width w2 w 56 Max
Reel Diameter a d 370 Max
Space Between Flanges w1 — 51.2 Max
Arbor Hole Diameter c f 26 ±12.0
Core Diameter n h 80 Max
Box — — 56/372/372 Max
Consecutive Missing Pieces* — — 3 Max —
Empty Places Per Reel* — — Not Specified —
Note: *Differs from EIA specification.
Figure 2P6 — EIA Referenced Taped Component Dimensions
RoHS Compliant, ELV Compliant HF Halogen Free Specifications subject to change without notice. ©2016 Littelfuse, Inc. 45
PolySwitch Resettable Devices
Radial-Leaded Devices
w1
n
a
c
w2
Cross Section
Direction of
Unreeling
Reel
Type
Upper Side
Lower Side
Optional Shape: Circular or Polygonal
Part Numbering System
Figure 2P7 — EIA Referenced Reel Dimensions
TM 2P - 10 271 -2
Packaging
Blank : Bulk
-2 : Tape and Reel
Varistor Voltage Indicator
The first two digits indicate voltage
The third digit signifies the power of ten
For example : 220 : 22 x 100 = 22V
221 : 22 x 101 = 220V
112 : 11 x 102 = 1100V
Typical PPTC Resistance (ohms)
2Pro Series
Telecom Module
LVM 2P - 015 R 10 431
MOV Breakover Voltage at 1mA Expressed as:
431: 43 x 101
MOV Diameter in mm
Radial Leaded
PPTC Hold Current
2Pro Series
Line Voltage Module
Notice:
Littelfuse products are not designed for, and shall not be used for, any purpose (including, without limitation, automotive, military, aerospace, medical, life-saving, life-sustaining
or nuclear facility applications, devices intended for surgical implant into the body, or any other application in which the failure or lack of desired operation of the product may
result in personal injury, death, or property damage) other than those expressly set forth in applicable Littelfuse product documentation. Warranties granted by Littelfuse shall
be deemed void for products used for any purpose not expressly set forth in applicable Littelfuse documentation. Littelfuse shall not be liable for any claims or damages arising
out of products used in applications not expressly intended by Littelfuse as set forth in applicable Littelfuse documentation. The sale and use of Littelfuse products is subject
to Littelfuse Terms and Conditions of Sale, unless otherwise agreed by Littelfuse.
RoHS Compliant, ELV Compliant
HF Halogen Free
Specifications subject to change without notice. ©2016 Littelfuse, Inc.
46
PolySwitch Resettable Devices
Radial-Leaded Devices
