PRODUCT: TRF250-120T-RA-B-0.5 PolySwitch(R) PTC Devices DOCUMENT: SCD26216 REV LETTER: E REV DATE: MAY 11, 2011 PAGE NO.: 1 OF 1 Overcurrent Protection Device Specification Status: Released Operating Conditions at 20C: Maximum Continuous Operating Voltage (VMCO): 60VDC Maximum Interrupt Current (IINT ): 3ARMS Fault Ratings at 20C: 250 VRMS, 3A, 10 applications Additional Info at 20C: Resistance matched: 0.5 Ohm Lightning withstand: 1.5 kV per ITU-T K.20, K.21 Helps equipment meet ITU-T K.20, K.21 Recommendations Helps equipment meet Telcordia GR1089 intrabuilding requirements Lead Material: 22 AWG Sn-Plated Copper (0.64 mm [0.025"] nominal diameter) External Coating Material: Cured, flame retardant epoxy polymer, meeting UL94 V-0 requirements Marking: TABLE I. DIMENSIONS: A B MIN MAX MIN MAX mm: -6.5 -11.0 in:* -(0.26) -(0.43) *Rounded off approximation C MIN --- D MAX 4.6 (0.18) MIN 4.7 (0.19) MAX --- E NOM 5.0 (0.20) F MAX 7.0 (0.28) TABLE II. PERFORMANCE RATINGS @ 20C: HOLD TRIP CURRENT CURRENT (A) (A) RESISTANCE () TIME TO TRIP(Sec) @ 1A R MIN R MAX R1 MAX* 0.120 0.240 7.0 9.0 16.0 *Maximum device resistance at 20C measured 1 hour post trip TYP 1.2 OPERATING TEMPERATURE (C) MIN MAX -40 85 TRIPPED POWER DISSIPATION (W) @ 60VDC TYP MAX 0.8 0.9 TABLE III. APPLICABLE PART DESCRIPTIONS: PART DESCRIPTION TRF250-120T-RA-B-0.5 Agency Recognitions: Reference Documents: Precedence: Effectivity: CAUTION: PACKAGING TYPE Bulk UL (File #E74889), CSA (File #78165), TUV 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 Materials Information ROHS Compliant NOTES N/A ELV Compliant Pb-Free (c) 2006, 2011 Tyco Electronics Corporation, a TE Connectivity Ltd. Company. All rights reserved.