RXEF250

PolySwitch® PTC Devices PRODUCT: RXEF250 DOCUMENT: SCD25227 REV LETTER: G REV DATE: JULY 26, 2016 PAGE NO.: 1 OF 2 Overcurrent Protection Device Specification Status: Released Electrical Rating Voltage: 72 V max (AC or DC) Current: 40 A max (AC or DC) Insulating Material: Cured, Flame Retardant Epoxy Polymer meets UL94 V-0 Requirements Lead Material: 20 AWG Tin Plated Copper Marking: Manufacturer’s Mark X250 and Part Identification Lot Identification TABLE I. DIMENSIONS: A B C D E MIN -- MAX 20.8 MIN -- MAX 25.4 MIN 9.4 MAX 10.9 MIN 7.6 MAX -- MIN -- MAX 3.0 -- (0.82) -- (1.00) (0.37) (0.43) (0.30) -- -- (0.12) mm: in*: *Rounded off approximation TABLE II. PERFORMANCE RATINGS : I HOLD RATED CURRENT CURRENT RATINGS INITIAL RESISTANCE VALUES TIME TO TRIP ONE HOUR POST-TRIP RESISTANCE STANDARD TRIP OHMS AT 20C MAX 0.13 TRIPPED- STATE POWER DISSIPATION AMPERES AMPERES OHMS SECONDS AT WATTS WATTS AT 20C AT 20C AT 20C 20C, 12.5A AT 20C AT 20C HOLD HOLD TRIP MIN MAX MAX NOMINAL MAX 2.50 2.50 5.00 0.05 0.08 15.6 2.5 3.38 Agency Recognitions UL, CSA, TUV, CQC Reference Documents: PS300 Precedence: This specification takes precedence over documents referenced herein. Effectivity: Reference documents shall be the issue in effect on the date of invitation for bid. CAUTION: Operation beyond the rated voltage or current may result in rupture, electrical arcing or flame. Materials Information ROHS Compliant ELV Compliant Pb-Free Halogen Free* HF * Halogen Free refers to: Br≤900ppm, Cl≤900ppm, Br+Cl≤1500ppm. © 2016 Littelfuse,Inc. Specifications are subject to change without notice. Revised July 26, 2016 littelfuse.com PolySwitch® PTC Devices Overcurrent Protection Device PRODUCT: RXEF250 DOCUMENT: SCD25227 REV LETTER: G REV DATE: JULY 26, 2016 PAGE NO.: 2 OF 2 Information furnished is believed to be accurate and reliable. However, users should independently evaluate the suitability of and test each product selected for their own applications. littelfuse products are not designed for, and shall not be used for, any purpose (including, without limitation, military, aerospace, medical, lifesaving, 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. © 2016 Littelfuse,Inc. Specifications are subject to change without notice. Revised July 26, 2016 littelfuse.com