The MF-RX Series is currently Features available, although not recommended Radial Leaded Devices for new designs. The higher voltage Cured, ame retardant epoxy polymer rated MF-RX/72 Series is preferred. insulating material meets UL 94V-0 requirements Agency recognition: RoHS compliant* MF-RX Series - PTC Resettable Fuses Electrical Characteristics 1 Hour (R ) Tripped 1 Initial Max. Time I I Post-Trip Power hold trip Resistance to Trip Resistance Dissipation V max. I max. Model Volts Amps Amperes Ohms Ohms Amperes Seconds Watts at 23 C at 23 C at 23 C at 23 C at 23 C at 23 C Hold Trip Min. Max. Max. Typ. MF-RX110 60 40 1.10 2.20 0.15 0.25 0.38 5.5 8.2 1.50 MF-RX135 60 40 1.35 2.70 0.12 0.19 0.30 6.75 9.6 1.70 MF-RX160 60 40 1.60 3.20 0.09 0.14 0.22 8.0 11.4 1.90 MF-RX185 60 40 1.85 3.70 0.08 0.12 0.19 9.25 12.6 2.10 MF-RX250 60 40 2.50 5.00 0.05 0.08 0.13 12.5 15.6 2.50 MF-RX300 60 40 3.00 6.00 0.04 0.06 0.10 15.0 19.8 2.80 MF-RX375 60 40 3.75 7.50 0.03 0.05 0.08 18.75 24.0 3.20 Environmental Characteristics Operating/Storage Temperature ...................... -40 C to +85 C Maximum Device Surface Temperature in Tripped State ............................................125 C Passive Aging .................................................. +85 C, 1000 hours ...........................................5 % typical resistance change Humidity Aging................................................. +85 C, 85 % R.H. 1000 hours .........................5 % typical resistance change Thermal Shock ................................................ -40 C to +85 C, 10 times ................................10 % typical resistance change Solvent Resistance .......................................... MIL-STD-202, Method 215 ...............................No change Vibration .......................................................... MIL-STD-883C, Method 2007.1,.......................No change Condition A Test Procedures And Requirements For Model MF-RX Series Test Test Conditions Accept/Reject Criteria Visual/Mech................................................... Verify dimensions and materials .......................Per MF physical description Resistance ....................................................... In still air 23 C .............................................Rmin R Rmax Time to Trip ...................................................... 5 times Ihold, Vmax, 23 C ...............................T max. time to trip (seconds) Hold Current .................................................... 30 min. at Ihold .................................................No trip Trip Cycle Life .................................................. Vmax, Imax, 100 cycles ....................................No arcing or burning Trip Endurance ................................................ Vmax, 48 hours .................................................No arcing or burning UL File Number ............................................... E 174545S CSA File Number ............................................. CA 110338 TV File Number ............................................. R2057213 Thermal Derating Chart - I / I (Amps) hold trip Ambient Operating Temperature Model -40 C -20 C 0 C 23 C 40 C 50 C 60 C 70 C 85 C MF-RX110 1.71 / 3.42 1.50 / 3.00 1.31 / 2.62 1.10 / 2.20 0.89 / 1.78 0.79 / 1.58 0.69 / 1.38 0.59 / 1.18 0.44 / 0.88 MF-RX135 2.09 / 4.18 1.84 / 3.68 1.61 / 3.22 1.35 / 2.70 1.09 / 2.18 0.97 / 1.94 0.85 / 1.70 0.73 / 1.46 0.54 / 1.08 MF-RX160 2.48 / 4.96 2.18 / 4.36 1.90 / 3.80 1.60 / 3.20 1.30 / 2.60 1.15 / 2.30 1.01 / 2.02 0.86 / 1.72 0.64 / 1.28 MF-RX185 2.87 / 5.74 2.52 / 5.04 2.20 / 4.40 1.85 / 3.70 1.50 / 3.00 1.33 / 2.66 1.17 / 2.34 1.00 / 2.00 0.74 / 1.48 MF-RX250 3.88 / 7.76 3.40 / 6.80 2.98 / 5.96 2.50 / 5.00 2.03 / 4.06 1.80 / 3.60 1.58 / 3.16 1.35 / 2.70 1.00 / 2.00 MF-RX300 4.65 / 9.30 4.08 / 8.16 3.57 / 7.14 3.00 / 6.00 2.43 / 4.86 2.16 / 4.32 1.89 / 3.78 1.62 / 3.24 1.20 / 2.40 MF-RX375 5.81 / 11.6 5.10 / 10.2 4.46 / 8.92 3.75 / 7.50 3.04 / 6.08 2.70 / 5.40 2.36 / 4.72 2.03 / 4.06 1.50 / 3.00 *RoHS Directive 2002/95/EC Jan. 27, 2003 including annex and RoHS Recast 2011/65/EU June 8, 2011. Speci cations are subject to change without notice. The device characteristics and parameters in this data sheet can and do vary in different applications and actual device performance may vary over time. Users should verify actual device performance in their speci c applications. *RoHS COMPLIANTAdditional Features Applications Bulk packaging, tape and reel and Ammo- Almost anywhere there is a low voltage power Pak available on most models supply, up to 60 V and a load to be protected, including: Resettable circuit protection Security and re alarm systems Loud speakers Power transformers MF-RX Series - PTC Resettable FusesMF-RX Series - PTC Resettable Fuses Product Dimensions C Physical Characteristics A B D E Model Max. Max. Nom. Tol. Min. Max. Style Lead Dia. Material 13.0 18.0 5.1 0.7 7.6 3.1 0.81 MF-RX110 1 Sn/Cu (0.512) (0.709) (0.201) (0.028) (0.299) (0.122) (0.032) 14.5 19.6 5.1 0.7 7.6 3.1 0.81 MF-RX135 1 Sn/Cu (0.571) (0.772) (0.201) (0.028) (0.299) (0.122) (0.032) 16.3 21.3 5.1 0.7 7.6 3.1 0.81 MF-RX160 1 Sn/Cu (0.642) (0.839) (0.201) (0.028) (0.299) (0.122) (0.032) 17.8 22.9 5.1 0.7 7.6 3.1 0.81 MF-RX185 1 Sn/Cu (0.701) (0.902) (0.201) (0.028) (0.299) (0.122) (0.032) 21.3 26.4 10.2 0.7 7.6 3.1 0.81 MF-RX250 1 Sn/Cu (0.839) (1.039) (0.402) (0.028) (0.299) (0.122) (0.032) 24.9 30.0 10.2 0.7 7.6 3.1 0.81 MF-RX300 1 Sn/Cu (0.980) (1.181) (0.402) (0.028) (0.299) (0.122) (0.032) 28.4 33.5 10.2 0.7 7.6 3.1 0.81 MF-RX375 1 Sn/Cu (1.118) (1.319) (0.402) (0.028) (0.299) (0.122) (0.032) Packaging options: 0.81 (20AWG) BULK: All models = 500 pcs. per bag. TAPE & REEL: MF-RX110 MF-RX160 = 1500 pcs. per reel MF-RX185 MF-RX375 = 1000 pcs. per reel AMMO-PACK: MF-RX110 MF-RX160 = 1000 pcs. per reel MF-RX185 MF-RX375 = 500 pcs. per reel A E How to Order Typical Time to Trip at 23 C MF - RX 110 - 0 - 99 Multifuse Product Designator B Series RX = Radial Leaded Component 1000 Hold Current, I hold 110-375 (1.10 Amps - 3.75 Amps) Packaging Options D 100 - = Bulk Packaging without part number suf x option - 0-99 = Bulk Packaging with part number suf x option C - 2 = Tape and Reel without part 10 number suf x option* - 2-99 = Tape and Reel with part number NOTE: Kinked lead option is available for suf x option board standoff. Contact factory for details. - AP = Ammo-Pak* 1 - 0-14 = Kinked leads where straight leads are standard Typical Part Marking - 0-17 = Straight leads where kinked leads are standard Represents total content. Layout may vary. 0.1 Part Number Suf x Option MANUFACTURER S - 99 = As of date code April 1, 2005 all TRADEMARK MF-RX models are RoHS PART compliant. The suf x -99 0.01 IDENTIFICATION can be used if a new part RX110 LOT NO. number is required to reference (T = TAIWAN DATE CODE 0180T the RoHS compliance. S = CHINA) (FIRST DIGIT = 0.001 Examples: LAST DIGIT OF YEAR MF-RX110 ...............Bulk packaging 1 10 100 NEXT THREE DIGITS = MF-RX110-0-99 .......Bulk packaging DAY OF YEAR) Fault Current (Amps) with part number suf x option MF-RX110-2 ............Tape and reel packaging MF-RX110-2-99 .......Tape and reel packaging with part number suf x option *Packaged per EIA486-B MF-RX SERIES, REV. O, 04/14 Speci cations are subject to change without notice. The device characteristics and parameters in this data sheet can and do vary in different applications and actual device performance may vary over time. Users should verify actual device performance in their speci c applications. MF-RX110 MF-RX135 MF-RX160 MF-RX185 MF-RX250 MF-RX300 MF-RX375 Time to Trip (Seconds)