Features Applications
Radial Leaded Devices Almost anywhere there is a low voltage power
supply and a load to be protected, including:
Cured, ame retardant epoxy polymer
insulating material meets UL 94V-0 Computers & peripherals
requirements
General electronics
RoHS compliant* and halogen free**
Automotive applications
Agency recognition:
MF-R Series - PTC Resettable Fuses
Electrical Characteristics
1 Hour (R ) Tripped
1
Initial Max. Time
Ihold Itrip Post-Trip Power
Resistance to Trip
I max. Resistance Dissipation
V max.
Model
Volts Amperes Ohms Ohms Amperes Seconds Watts
Amps
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-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
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
TV File Number ............................................. R2057213
* RoHS Directive 2002/95/EC Jan. 27, 2003 including annex and RoHS Recast 2011/65/EU June 8, 2011.
** Bourns follows the prevailing de nition of halogen free in the industry. Bourns considers a product to be halogen free if (a) the Bromine (Br) content is 900 ppm or less;
(b) the Chlorine (Cl) content is 900 ppm or less; and (c) the total Bromine (Br) and Chlorine (Cl) content is 1500 ppm or less.
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 COMPLIANT
&
**HALOGEN FREEAdditional Features
Bulk packaging, tape and reel and Ammo-Pak available on most models
MF-R Series - PTC Resettable Fuses
Product Dimensions (see next page for outline drawing)
C Physical Characteristics
A B D E
Model
Max. Max. Nom. Tol. Min. Max. Style Lead Dia. Material
8.0 8.3 5.1 0.7 7.6 3.1 0.405
MF-R005 4 Sn/NiCu
(0.315) (0.327) (0.201) (0.028) (0.299) (0.122) (0.016)
7.4 12.7 5.1 0.7 7.6 3.1 0.51
MF-R010 1 Sn/NiCu
(0.291) (0.5) (0.201) (0.028) (0.299) (0.122) (0.020)
7.4 12.7 5.1 0.7 7.6 3.1 0.51
MF-R017 1 Sn/CuFe
(0.291) (0.5) (0.201) (0.028) (0.299) (0.122) (0.020)
7.4 12.7 5.1 0.7 7.6 3.1 0.51
MF-R020 1 Sn/CuFe
(0.291) (0.5) (0.201) (0.028) (0.299) (0.122) (0.020)
7.4 12.7 5.1 0.7 7.6 3.1 0.51
MF-R025 1 Sn/CuFe
(0.291) (0.5) (0.201) (0.028) (0.299) (0.122) (0.020)
7.4 13.4 5.1 0.7 7.6 3.1 0.51
MF-R030 1 Sn/CuFe
(0.291) (0.528) (0.201) (0.028) (0.299) (0.122) (0.020)
7.4 13.7 5.1 0.7 7.6 3.1 0.51
MF-R040 1 Sn/CuFe
(0.291) (0.539) (0.201) (0.028) (0.299) (0.122) (0.020)
7.9 13.7 5.1 0.7 7.6 3.1 0.51
MF-R050 1 Sn/Cu
(0.311) (0.539) (0.201) (0.028) (0.299) (0.122) (0.020)
9.7 15.2 5.1 0.7 7.6 3.1 0.51
MF-R065 1 Sn/Cu
(0.382) (0.598) (0.201) (0.028) (0.299) (0.122) (0.020)
10.4 16.0 5.1 0.7 7.6 3.1 0.51
MF-R075 1 Sn/Cu
(0.409) (0.630) (0.201) (0.028) (0.299) (0.122) (0.020)
11.7 16.7 5.1 0.7 7.6 3.1 0.51
MF-R090 1 Sn/Cu
(0.461) (0.657) (0.201) (0.028) (0.299) (0.122) (0.020)
7.4 12.2 5.1 0.7 7.6 3.0 0.51
MF-R090-0-9 3 Sn/CuFe
(0.291) (0.480) (0.201) (0.028) (0.299) (0.118) (0.020)
8.9 14.0 5.1 0.7 7.6 3.0 0.51
MF-R110 1 Sn/Cu
(0.350) (0.551) (0.201) (0.028) (0.299) (0.118) (0.020)
8.9 18.9 5.1 0.7 7.6 3.0 0.51
MF-R135 1 Sn/Cu
(0.350) (0.744) (0.201) (0.028) (0.299) (0.118) (0.020)
10.2 16.8 5.1 0.7 7.6 3.0 0.51
MF-R160 1 Sn/Cu
(0.402) (0.661) (0.201) (0.028) (0.299) (0.118) (0.020)
12.0 18.4 5.1 0.7 7.6 3.0 0.51
MF-R185 1 Sn/Cu
(0.472) (0.724) (0.201) (0.028) (0.299) (0.118) (0.020)
12.0 18.3 5.1 0.7 7.6 3.0 0.81
MF-R250 2 Sn/Cu
(0.472) (0.720) (0.201) (0.028) (0.299) (0.118) (0.032)
12.0 18.3 5.1 0.7 7.6 3.0 0.51
MF-R250-0-10 3 Sn/CuFe
(0.472) (0.720) (0.201) (0.028) (0.299) (0.118) (0.020)
12.0 18.3 5.1 0.7 7.6 3.0 0.81
MF-R300 2 Sn/Cu
(0.472) (0.720) (0.201) (0.028) (0.299) (0.118) (0.032)
14.4 24.8 5.1 0.7 7.6 3.0 0.81
MF-R400 2 Sn/Cu
(0.567) (0.976) (0.201) (0.028) (0.299) (0.118) (0.032)
17.4 24.9 10.2 0.7 7.6 3.0 0.81
MF-R500 2 Sn/Cu
(0.685) (0.980) (0.402) (0.028) (0.299) (0.118) (0.032)
19.3 31.9 10.2 0.7 7.6 3.0 0.81
MF-R600 2 Sn/Cu
(0.760) (1.256) (0.402) (0.028) (0.299) (0.118) (0.032)
22.1 29.8 10.2 0.7 7.6 3.0 0.81
MF-R700 2 Sn/Cu
(0.870) (1.173) (0.402) (0.028) (0.299) (0.118) (0.032)
24.2 32.9 10.2 0.7 7.6 3.0 0.81
MF-R800 2 Sn/Cu
(0.953) (1.295) (0.402) (0.028) (0.299) (0.118) (0.032)
24.2 32.9 10.2 0.7 7.6 3.0 0.81
MF-R900 2 Sn/Cu
(0.953) (1.295) (0.402) (0.028) (0.299) (0.118) (0.032)
24.2 32.9 10.2 0.7 7.6 3.0 0.81
MF-R1100 2 Sn/Cu
(0.953) (1.295) (0.402) (0.028) (0.299) (0.118) (0.032)
Packaging options:
0.405 (26AWG)
MM
DIMENSIONS:
0.51 (24AWG)
BULK: All models = 500 pcs. per bag
(INCHES)
0.81 (20AWG)
TAPE & REEL: MF-R005-MF-R160 12.7 mm device pitch = 3000 pcs. per reel
MF-R185-MF-R400 25.4 mm device pitch = 1500 pcs. per reel
MF-R500~MF-R1100 25.4 mm device pitch = 1000 pcs. per reel
AMMO-PACK: MF-R005-MF-R160 12.7 mm device pitch = 2000 pcs. per pack
MF-R185-MF-R400 25.4 mm device pitch = 1000 pcs. per pack
MF-R500~MF-R1100 25.4 mm device pitch = 500 pcs. per pack
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.