MF-RM008/240-0 Bourns

Features Applications n Radial leaded devices n Food blenders, coffee machines n Cured, flame retardant epoxy polymer n HVAC insulating material meets UL 94V-0 n Electric fans, blowers requirements n AC adaptors n Bulk packaging, tape and reel available n Resettable circuit protection n Agency recognition: n RoHS compliant* and halogen free** MF-RM Series - PTC Resettable Fuses Electrical Characteristics One Hour Tripped Typical Current Initial Max. V I Post-Trip Power max max Trip Limit Resistance Time to Trip Resistance Dissipation Model I I Operating Interrupt Interrupt R R Max. PD Typ. hold trip Min. 1 at 23 C at 23 C at 23 C Voltage Voltage Current at 23 C at 23 C at 23 C (A) (A) (Vac) (Vac) (A) (Ohms) (Ohms) (A) (Sec.) (W) MF-RM005/240 0.05 0.12 240 265 1.0 18.50 65.00 0.25 10.0 0.9 MF-RM008/240 0.08 0.19 240 265 1.2 7.40 26.00 0.40 10.0 0.9 MF-RM012/240 0.12 0.30 240 265 1.2 3.00 12.00 0.60 15.0 1.0 MF-RM016/240 0.16 0.37 240 265 2.0 2.50 7.80 0.80 15.0 1.4 MF-RM025/240 0.25 0.56 240 265 3.5 1.30 3.80 1.25 18.5 1.5 MF-RM033/240 0.33 0.74 240 265 4.5 0.77 2.60 1.65 21.0 1.7 MF-RM040/240 0.40 0.90 240 265 5.5 0.60 1.90 2.00 24.0 2.0 MF-RM055/240 0.55 1.25 240 265 7.0 0.45 1.45 2.75 26.0 3.4 Environmental Characteristics Operating Temperature .................................... -20 C to +85 C Humidity Aging................................................. +85 C, 85 % R.H. 1000 hours .........................20 % typical resistance change Passive Aging .................................................. +85 C, 1000 hours ...........................................20 % typical resistance change Vibration .......................................................... MIL-STD-883C, Method 2007.1,.......................No change Condition A Solvent Resistance .......................................... MIL-STD-202, Method 215 ...............................No change Test Procedures And Requirements For Model MF-RM Series Item Test Conditions Accept/Reject Criteria Visual/Mechanical ............................................ Verify dimensions and material .........................Per MF physical description Resistance ....................................................... In still air 23 C .............................................R R R1 min max Time to Trip ...................................................... 240 Vac, specified current ................................T max. time to trip Hold Current .................................................... At Ihold ..............................................................No trip Trip Cycle Life .................................................. 240 Vac, I , 100 cycles ................................No arcing or burning max Trip Endurance ................................................ a) 240 Vac, I , 24 hours ..............................No arcing or burning max b) 265 Vac, I , 30 mins. max Solderability ..................................................... MIL-STD-202, Method 208 ...............................95 % min. coverage UL File Number .....................E174545 ........... Advantages Benefits n Resettable feature with overtemperature and overcurrent protection n Reduced repair and replacement costs can save expensive components from having to be replaced after n Reduced nuisance tripping tripping, e.g., transformers with built in thermal fuses n Combined overcurrent and overtemperature protector in one device n Faster than bimetallic switch designs that take on average approximately 30 seconds to cool down and reset n Generally lower electromagnetic interference than bimetallic switches MF-RMMF-RX SeriesSeries -- PTCPTC ResettableResettable FusesFuses Thermal Derating Chart - I (Amps) hold Ambient Operating Temperature Model -20 C 0 C 23 C 40 C 50 C 60 C 70 C 85 C MF-RM005/240 0.08 0.06 0.05 0.04 0.04 0.03 0.03 0.02 MF-RM008/240 0.12 0.10 0.08 0.07 0.06 0.05 0.04 0.03 MF-RM012/240 0.18 0.15 0.12 0.10 0.09 0.07 0.06 0.04 MF-RM016/240 0.24 0.20 0.16 0.13 0.11 0.10 0.08 0.05 MF-RM025/240 0.38 0.32 0.25 0.21 0.18 0.15 0.13 0.09 MF-RM033/240 0.50 0.42 0.33 0.27 0.23 0.20 0.17 0.11 MF-RM040/240 0.61 0.51 0.40 0.33 0.28 0.24 0.20 0.14 MF-RM055/240 0.80 0.68 0.55 0.46 0.40 0.35 0.29 0.22 Product Dimensions C Physical Characteristics A B D E Model Max. Max. Nom. Tol. Min. Max. Style Lead Dia. Material 8.3 12.9 5.1 0.7 7.6 3.8 0.51 MF-RM005/240 1 Sn/Cu (0.327) (0.508) (0.201) (0.028) (0.299) (0.150) (0.020) 8.3 12.9 5.1 0.7 7.6 3.8 0.51 MF-RM008/240 1 Sn/Cu (0.327) (0.508) (0.201) (0.028) (0.299) (0.150) (0.020) 8.3 12.9 5.1 0.7 7.6 3.8 0.51 MF-RM012/240 1 Sn/Cu (0.327) (0.508) (0.201) (0.028) (0.299) (0.150) (0.020) 9.9 13.8 5.1 0.7 7.6 3.8 0.51 MF-RM016/240 1 Sn/Cu (0.390) (0.543) (0.201) (0.028) (0.299) (0.150) (0.020) 10.0 20.0 5.1 0.7 7.6 3.8 0.65 MF-RM025/240 2 Sn/Cu (0.394) (0.787) (0.201) (0.028) (0.299) (0.150) (0.026) 11.4 20.0 5.1 0.7 7.6 3.8 0.65 MF-RM033/240 2 Sn/Cu (0.449) (0.787) (0.201) (0.028) (0.299) (0.150) (0.026) 11.5 20.9 5.1 0.7 7.6 3.8 0.65 MF-RM040/240 2 Sn/Cu (0.453) (0.823) (0.201) (0.028) (0.299) (0.150) (0.026) 14.0 22.4 5.1 0.7 7.6 4.1 0.81 MF-RM055/240 2 Sn/Cu (0.551) (0.882) (0.201) (0.028) (0.299) (0.161) (0.032) 0.51 (24AWG) MM Packaging options: DIMENSIONS: 0.65 (22AWG) (INCHES) BULK: 500 pcs. per bag. 0.81 (20AWG) TAPE & REEL: 2000 pcs. per reel (MF-RM005/240~MF-RM040/240) 1000 pcs. per reel (MF-RM055/240) Style 1 Style 2 Typical Part Marking A A E E Represents total content. Layout may vary. MANUFACTURER S TRADEMARK PART IDENTIFICATION RM055 0220S B B DATE CODE (FIRST DIGIT = COUNTRY OF LAST DIGIT OF YEAR MANUFACTURE NEXT THREE DIGITS = (T = TAIWAN DAY OF YEAR) S = CHINA) Specifications are subject to change without notice. Users should verify actual device performance in their D D specific applications. LEAD LEAD The products described herein and this document are DIA. DIA. C C subject to specific legal disclaimers as set forth on the Also available with straight leads (see How to Order). last page of this document, and at www.bourns.com/ docs/legal/disclaimer.pdf.