Features
■ Radial Leaded Devices
■ Cured, fl ame retardant epoxy polymer
insulating material meets UL 94V-0
requirements
■ RoHS compliant*
■ Agency recognition:
Applications
Almost anywhere there is a low voltage power
supply and a load to be protected, including:
■ Computers & peripherals
■ General electronics
■ Automotive applications
MF-R Series - PTC Resettable Fuses
*RoHS Directive 2002/95/EC Jan 27, 2003 including Annex.
Specifi cations are subject to change without notice.
Customers should verify actual device performance in their specifi c applications.
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-R 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 174545
CSA File Number ............................................. CA 110338
TÜV File Number ............................................. R2057213
Electrical Characteristics
Model V max.
Volts
I max.
Amps
Ihold Itrip Initial
Resistance
1 Hour (R1)
Post-Trip
Resistance
Max. Time
to Trip
Tripped
Power
Dissipation
Amperes
at 23 °C
Ohms
at 23 °C
Ohms
at 23 °C
Amperes
at 23 °C
Seconds
at 23 °C
Watts
at 23 °C
Hold Trip Min. Max. Max. Typ.
MF-R005** 60 40 0.05 0.10 7.3 11.1 22.0 0.5 5.0 0.22
MF-R010 60 40 0.10 0.20 2.50 4.50 7.50 0.5 4.0 0.38
MF-R017 60 40 0.17 0.34 2.00 3.20 8.00 0.85 3.0 0.48
MF-R020 60 40 0.20 0.40 1.50 2.84 4.40 1.0 2.2 0.40
MF-R025 60 40 0.25 0.50 1.00 1.95 3.00 1.25 2.5 0.45
MF-R030 60 40 0.30 0.60 0.76 1.36 2.10 1.5 3.0 0.50
MF-R040 60 40 0.40 0.80 0.52 0.86 1.29 2.0 3.8 0.55
MF-R050 60 40 0.50 1.00 0.41 0.77 1.17 2.5 4.0 0.75
MF-R065 60 40 0.65 1.30 0.27 0.48 0.72 3.25 5.3 0.90
MF-R075 60 40 0.75 1.50 0.18 0.40 0.60 3.75 6.3 0.90
MF-R090 60 40 0.90 1.80 0.14 0.31 0.47 4.5 7.2 1.00
MF-R090-0-9 30 40 0.90 1.80 0.07 0.12 0.22 4.5 5.9 0.60
MF-R110 30 40 1.10 2.20 0.10 0.18 0.27 5.5 6.6 0.70
MF-R135 30 40 1.35 2.70 0.065 0.115 0.17 6.75 7.3 0.80
MF-R160 30 40 1.60 3.20 0.055 0.105 0.15 8.0 8.0 0.90
MF-R185 30 40 1.85 3.70 0.040 0.07 0.11 9.25 8.7 1.00
MF-R250 30 40 2.50 5.00 0.025 0.048 0.07 12.5 10.3 1.20
MF-R250-0-10 30 40 2.50 5.00 0.025 0.048 0.07 12.5 10.3 1.20
MF-R300 30 40 3.00 6.00 0.020 0.05 0.08 15.0 10.8 2.00
MF-R400 30 40 4.00 8.00 0.010 0.03 0.05 20.0 12.7 2.50
MF-R500 30 40 5.00 10.00 0.010 0.03 0.05 25.0 14.5 3.00
MF-R600 30 40 6.00 12.00 0.005 0.02 0.04 30.0 16.0 3.50
MF-R700 30 40 7.00 14.00 0.005 0.02 0.03 35.0 17.5 3.80
MF-R800 30 40 8.00 16.00 0.005 0.02 0.03 40.0 18.8 4.00
MF-R900 30 40 9.00 18.00 0.005 0.01 0.02 45.0 ***20.0 4.20
MF-R1100 16 100 11.00 22.00 0.003 0.01 0.014 40.0 20.0 4.50
**CSA approval pending. ***Tested at 40 amps
*RoHS COMPLIANT