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PolySwitch?
PRODUCT: TCF250-145-RB-B-0.5
308 Constitution Drive
Menlo Park, CA 94025-1164
Phone: 800-227-4856
www.circuitprotection.com
PTC Devices
Overcurrent Protection Device
DOCUMENT: SCD25921
PCN: REFER TO TABLE III BELOW
REV LETTER: G
REV DATE: MAY 9, 2011
PAGE NO.: 1 OF 1
Specification Status: Released
Maximum Operating Voltage: 60V DC
Fault Ratings at 20°C:
250V RMS , 3A, 10 applications
Additional Info at 20°C:
? Resistance matched: 0.5 ohms
? Lightning withstand:
- ITU-T K.20/K21 - 1.5 kV
? Helps equipment meet ITU-T K.20/K.21 recommendations
? Helps equipment meet Telcordia GR1089 intrabuilding requirements
Marking:
None
TABLE I. DIMENSIONS:
A B
C
A
B
C
MIN MAX MIN MAX
MIN
MAX
mm:
in:*
5.4 5.6 5.4 5.6
(0.21) (0.22) (0.21) (0.22)
2.0
(0.08)
2.5
(0.10 )
*Rounded off approximation.
TABLE II. PERFORMANCE RATINGS @ 20°C:
HOLD*
CURRENT
TRIP
CURRENT
RESISTANCE ( )
TIME TO TRIP(Sec)
@ 1A
OPERATING
TEMPERATURE (°C)
TRIPPED
POWER DISSIPATION
(A)
(A)
(W)
R MIN R MAX
R 1 MAX ** TYP*
MIN
MAX
TYP @ 60V DC
0.145 0.290 4.3 6.0 14.0 2.0
-40
85
1.0
* Dependent on Heat Sinking of Mounting Fixture.
**Maximum device resistance at 20°C measured 1 hour post trip
TABLE III. APPLICABLE PART DESCRIPTIONS:
PART DESCRIPTION
TCF250-145-RB-B-0.5
PCN # (INTERNAL USE ONLY)
A25043-000
PACKAGING TYPE
Bulk
NOTES
N/A
Agency Recognitions:
Reference Documents:
Precedence:
Effectivity:
CAUTION:
Materials Information
UL (File #E74889)
Raychem PS300, ITU-T K.20/K.21
This specification takes precedence over documents referenced herein.
Reference documents shall be the issue in effect on the date of invitation for bid.
Operation beyond the rated voltage or current may result in rupture, electrical arcing or flame.
ROHS Compliant
ELV Compliant
Pb-Free
? 2007, 2011 Tyco Electronics Corporation, a TE Connectivity Ltd. Company. All rights reserved.
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