2Pro Devices Help
Provide Reliable Connectivity
Raychem Circuit Protection, the leader in innovative circuit protection solutions, has
introduced the industry’s first integrated overcurrent/overvoltage protection solu-
tion—the 2Pro device. The RoHS-compliant component incorporates PolySwitch
PPTC (Polymeric Positive Temperature Coefficient) and metal oxide varistor technol-
ogy in a single device to reduce board space requirements and component count.
Damage to telephony communications equipment can be caused by various
sources including lightning and ESD surges, power contact and induction with AC
lines. The 2Pro TM2P-10271 and TM2P-10271E devices help provide current limit-
ing 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 communications equipment remains operational.
With the introduction of the 2Pro devices Raychem Circuit Protection addresses the need for resettable circuit protection
devices for use in cost-sensitive PSTN (Public Switched Telephone Network) and VoIP (Voice over Internet Protocol) telepho-
ny 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 are designed specifically to
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
TM2P Electrical Characteristics
Overcurrent (terminals 1 – 2)—Performance ratings @ 20°C
IHOLD
(A)
ITRIP
(A)
Features:
• Single overcurrent, overvoltage
and ESD protection device
• Resettable overcurrent protection
• UL 497A listed protector
(#E258475)
• RoHS compliant
Applications:
•
•
•
•
•
•
•
•
Cordless telephones
VoIP gateways
Fax machines
Data modems
Set-top boxes
Security systems
MDF modules
Analog and ISDN linecards
Electrical Schematic
Part Number
Resistance†
(Ω)
R min.
R max. R1 max*
Time to Trip (s)†
@ 1A
Typ
Max
(1)
(2)
TM2P-10271
TM2P-10271E‡
0.15
0.15
0.30
0.30
7.0
6.0
14.0
12.0
16.0
14.0
0.3
0.4
3
4
Overvoltage (terminals 2 – 3)
Varistor Voltage
V @ 1 mA
DC (V)
Tolerance
DC Resistance
@ 100 V
(MΩ)
Maximum Clamping
Voltage @ 25 A
(V)
Rated
Wattage
(W)
(3)
Part Number
TM2P-10271
TM2P-10271E‡
270
270
± 10%
± 10%
>10
>10
455
455
0.25
0.25
* Maximum device resistance at 20°C measured 1 hour post trip.
† Corresponds to operation below varistor voltages.
‡ Data is preliminary.
www.circuitprotection.com
Part Numbering System
TM 2P- 10 271 E -2
Packaging
Blank: Bulk
-2:
Tape & reel
Modifier (optional)
E = Enhanced lightning
Varistor voltage indicator
The first two digits indicate voltage.
The third digit signifies the power of ten.
For example:
220: 22 x 10
0
= 22v
221: 22 x 10
1
= 220v
112: 11 x 10
2
= 1100v
Typical PPTC resistance (ohms)
2Pro™ Series
Telecom Module
Typical Time-to-Trip at 25°C for 2Pro Devices
100
PPTC only
TM2P at 600Vac
10
Time-to-Trip (s)
1
0.1
0.01
0.001
0.1
1
10
100
Short Circuit Current (A)
Packaging and Marking Information
Part Number
Bag Quantity
Tape & Reel Quantity
Standard Package
Part Marking
Agency Recognition
TM2P-10271
TM2P-10271-2
TM2P-10271E
TM2P-10271E-2
500
-
500
-
-
1,500
-
1,500
10,000
7,500
10,000
7,500
1027 & Batch #
1027 & Batch #
3527 & Batch #
3527 & Batch #
UL 497A/File No. E258475
UL 497A/File No. E258475
Pending
Pending
Ordering Information
Bulk
Tape & Reel
500 pieces/bag
10,000 pieces/box
1,500 pieces/reel
7,500 pieces/box
Physical Characteristics
Lead material
Flammability
Soldering characteristics
Solder heat withstand
22 AWG Sn plated copper
IEC 695-2-2 Needle flame test for 20s
ANSI approved IPC/EIA/JEDEC J-STD-002, Category 3
IEC-STD 68-2-20, Section 5, Test Tb, Method 1A
Environmental Specifications
Test
Conditions
Passive aging
Humidity aging
Active aging
Thermal shock
Solvent resistance
60°C, 1000 hours / 85°C, 1000 hours
85°C, 85% RH, 1000 hours
60°C, 90% RH, 60Vdc bias,1000 hours
125°C, -55°C (10 times)
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.
Mechanical Dimensions
A
Min
Max
Min
B
Max
Min
C
Max
Min
D
Max
E
Nom
F
Min
Max
F
A
C
B
mm
inch
—
—
12
(0.47)
—
—
15
(0.59)
—
—
6.6
(0.26)
6.0
(0.236)
—
—
2.5
(0.098)
—
—
12
(0.47)
D
(3)
(2) (1)
E
Center to Center
Typ.
Worldwide Headquarters
308 Constitution Drive, MS R21/2A
Menlo Park, CA USA 94025-1164
Tel
Fax
(800) 227-7040
(650) 361-6900
(650) 361-2508
www.circuitprotection.com
www.circuitprotection.com.hk (Chinese)
www.raychem.co.jp/polyswitch (Japanese)
2Pro, PolySwitch, Raychem, and Tyco are trademarks. All information, including illustrations, is believed to be reliable. Users, however, should independently evaluate the suitability of each product for their application.
Tyco Electronics Corporation makes no warranties as to the accuracy or completeness of the information, and disclaims any liability regarding its use. Tyco Electronics’ only obligations are those in the Company’s
Standard Terms and Conditions of Sale for this product, and in no case will Tyco Electronics be liable for any incidental, indirect, or consequential damages arising from the sale, resale, use or misuse of the product.
Specifications are subject to change without notice. In addition, Tyco Electronics reserves the right to make changes—without notification to Buyer—to materials or processing that do not affect compliance with any
applicable specification.
© 2006 Tyco Electronics Corporation. Printed in USA. RCP0074.0606.xxx
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