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Features
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RX 1 018 10 0T
Applications
Almost anywhere there is a low voltage power supply, up to 60V and a load to be protected, including: I Security and fire alarm systems I Loud speakers I Power transformers
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Radial Leaded Devices Cured, flame retardant epoxy polymer insulating material meets UL 94V-0 requirements Bulk packaging, tape and reel and AmmoPak available on most models Agency recognition:
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MF-RX Series - PTC Resettable Fuses
Electrical Characteristics
Initial Resistance Ohms at 23C Min. Max.
1 Hour (R1) Post-Trip Resistance
Ihold Model V max. Volts I max. Amps
Itrip
Max. Time To Trip Amperes at 23C Seconds at 23C
Tripped Power Dissipation
Amperes at 23C Hold Trip
Ohms at 23C Max.
Watts at 23C
MF-RX110 MF-RX135 MF-RX160 MF-RX185 MF-RX250 MF-RX300 MF-RX375
60 60 60 60 60 60 60
40 40 40 40 40 40 40
1.10 1.35 1.60 1.85 2.50 3.00 3.75
2.20 2.70 3.20 3.70 5.00 6.00 7.50
0.15 0.12 0.09 0.08 0.05 0.04 0.03
0.25 0.19 0.14 0.12 0.08 0.06 0.05
0.38 0.30 0.22 0.19 0.13 0.10 0.08
5.5 6.75 8.0 9.25 12.5 15.0 18.75
8.2 9.6 11.4 12.6 15.6 19.8 24.0
1.50 1.70 1.90 2.10 2.50 2.80 3.20
Environmental Characteristics Operating/Storage Temperature ........................-40C to +85C Maximum Device Surface Temperature in Tripped State ................................................125C Passive Aging......................................................+85C, 1000 hours ......................................5% typical resistance change Humidity Aging....................................................+85C, 85% R.H. 1000 hours......................5% typical resistance change Thermal Shock ....................................................+125C to -55C,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 @ 23C ........................................Rmin R Rmax Time to Trip ........................................................5 times Ihold, Vmax, 23C ..........................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 TUV File Number ................................................R2057213
Thermal Derating Chart - Ihold / Itrip (Amps)
Ambient Operating Temperature Model MF-RX110 MF-RX135 MF-RX160 MF-RX185 MF-RX250 MF-RX300 MF-RX375 -40C 1.71 / 3.42 2.09 / 4.18 2.48 / 4.96 2.87 / 5.74 3.88 / 7.76 4.65 / 9.30 5.81 / 11.6 -20C 1.50 / 3.00 1.84 / 3.68 2.18 / 4.36 2.52 / 5.04 3.40 / 6.80 4.08 / 8.16 5.10 / 10.2 0C 1.31 / 2.62 1.61 / 3.22 1.90 / 3.80 2.20 / 4.40 2.98 / 5.96 3.57 / 7.14 4.46 / 8.92 23C 1.10 / 2.20 1.35 / 2.70 1.60 / 3.20 1.85 / 3.70 2.50 / 5.00 3.00 / 6.00 3.75 / 7.50 40C 0.89 / 1.78 1.09 / 2.18 1.30 / 2.60 1.50 / 3.00 2.03 / 4.06 2.43 / 4.86 3.04 / 6.08 50C 0.79 / 1.58 0.97 / 1.94 1.15 / 2.30 1.33 / 2.66 1.80 / 3.60 2.16 / 4.32 2.70 / 5.40 60C 0.69 / 1.38 0.85 / 1.70 1.01 / 2.02 1.17 / 2.34 1.58 / 3.16 1.89 / 3.78 2.36 / 4.72 70C 0.59 / 1.18 0.73 / 1.46 0.86 / 1.72 1.00 / 2.00 1.35 / 2.70 1.62 / 3.24 2.03 / 4.06 85C 0.44 / 0.88 0.54 / 1.08 0.64 / 1.28 0.74 / 1.48 1.00 / 2.00 1.20 / 2.40 1.50 / 3.00
Specifications are subject to change without notice.
Additional Features
I I
Resettable circuit protection Patents pending
MF-RX Series - PTC Resettable Fuses
Product Dimensions
Model MF-RX110 MF-RX135 MF-RX160 MF-RX185 MF-RX250 MF-RX300 MF-RX375 A Max. 13.0 (0.512) 14.5 (0.571) 16.3 (0.642) 17.8 (0.701) 21.3 (0.839) 24.9 (0.980) 28.4 (1.118) B Max. 18.0 (0.709) 19.6 (0.772) 21.3 (0.839) 22.9 (0.902) 26.4 (1.039) 30.0 (1.181) 33.5 (1.319) C Nom. 5.1 (0.201) 5.1 (0.201) 5.1 (0.201) 5.1 (0.201) 10.2 (0.402) 10.2 (0.402) 10.2 (0.402) Tol. 0.7 (0.028) 0.7 (0.028) 0.7 (0.028) 0.7 (0.028) 0.7 (0.028) 0.7 (0.028) 0.7 (0.028) D Min. 7.6 (0.299) 7.6 (0.299) 7.6 (0.299) 7.6 (0.299) 7.6 (0.299) 7.6 (0.299) 7.6 (0.299) E Max. 3.1 (0.122) 3.1 (0.122) 3.1 (0.122) 3.1 (0.122) 3.1 (0.122) 3.1 (0.122) 3.1 (0.122) Physical Characteristics Style Lead Dia. Material 0.81 1 Sn/Cu (0.032) 0.81 1 Sn/Cu (0.032) 0.81 1 Sn/Cu (0.032) 0.81 1 Sn/Cu (0.032) 0.81 1 Sn/Cu (0.032) 0.81 1 Sn/Cu (0.032) 0.81 1 Sn/Cu (0.032)
0.81 (20AWG)
Packaging options: 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
DIMENSIONS =
MM (INCHES)
NOTE: Kinked lead option is available for board standoff. Contact factory for details.
B
Typical Time to Trip at 23C
MF -R MF X110 -R MF X135 -R MF X160 -R MF X185 -R MF X250 -R MF X300 -RX 375
1000 100
MANUFACTURER'S TRADEMARK RX110 0180T LOT NO. (T = TAIWAN S = CHINA)
D
C
Typical Part Marking
Represents total content. Layout may vary.
Time to Trip (Seconds)
PART IDENTIFICATION DATE CODE (FIRST DIGIT = LAST DIGIT OF YEAR; NEXT THREE DIGITS = DAY OF YEAR)
10
1
How to Order
0.1
MF - RX 110 - __
Multifuse(R) Product Designator Series RX = Radial Leaded Component Hold Current, Ihold 110-375 (1.10 Amps - 3.75 Amps) Packaging Options = Bulk Packaging - 2 = Tape and Reel* - AP = Ammo-Pak* *Packaged per EIA 486-B
0.01
0.001 1 10 100
Fault Current (Amps)
MF-RX SERIES, REV. G, 08/01 Specifications are subject to change without notice.
Tape and Reel Specifications
MF-R, MF-RX & MF-R/250 Series Tape and Reel Specifications
Devices taped using EIA468-B/IEC286-2 standards. See table below and Figures 1 and 2 for details. IEC Mark W EIA Mark W W4 W0 W2 W1 D0 H H0 H1 W6 W5 D0 H H0 H1 C1 C2 I1 L I2 P0 L1 L I2 P0 Dimensions Dimensions Tolerance
18 (.709) 5 (.197) -0.5/+1.0 (-0.02/+.039)
Dimension Description Carrier tape width Hold down tape width Hold down tape Top distance between tape edges Sprocket hole position Sprocket hole diameter Abscissa to plane (straight lead) Abscissa to plane (kinked lead) Abscissa to top Overall width w/lead protrusion Overall width w/o lead protrusion Lead protrusion Protrusion of cutout Protrusion beyond hold tape Sprocket hole pitch Pitch tolerance Device pitch: MF-R010 - MF-R160 Device pitch: MF-R185 - MF-R400 Device pitch: MF-RX110 - MF-RX160 Device pitch: MF-RX185 - MF-RX375 Device pitch: MF-R012/250 Tape thickness Tape thickness with splice Splice sprocket hole alignment Body lateral deviation Body tape plane deviation Lead seating plane deviation Lead spacing Reel width Reel diameter Space between flanges less device
min.
No protrusion
3 (.118) 9 (.354) 4 (.157) 18.5 (.728) 16 (.63) 32.2 (1.268) 43.2 (1.7) 42.5 (1.673) 1.0 (.039) 11 (.433)
max.
-0.5/+0.75 (-0.02/+0.03) 0.2 (.0078) 3.0 (.118) 0.5 (.02)
max. max. max. max. max.
0.3 (.012)
Not specified
12.7 (0.5)
20 seconds
12.7 (0.5) 25.4 (1.0) 12.7 (0.5) 12.7 (0.5) 25.4 (1.0) 0.9 (.035) 2.0 (.079)
1 second
t
t t1
max. max.
0.3 (.012) 1.0 (.039) 1.3 (.051) 0.7 (.028) 0.8 (.035)
0 h p P1 F w d h p P1 F w a 0 0 0
5.08 (0.2) 56 (2.205) 370 (14.57) 4.75 (.187)
max. max.
3.25 (.128) DIMENSIONS = MM (INCHES)
Specifications are subject to change without notice.
MF-R, MF-RX & MF-R/250 Series Tape and Reel Specifications
Dimension Description Space between flanges less device Arbor hole diameter Core diameter Box Consecutive missing places Empty places per reel
IEC Mark
EIA Mark
Dimensions Dimensions Tolerance
4.75 (.187) 26 (1.024) 80 (3.15) 372 (14.6) 3.25 (.128) 12.0 (.472)
f h
c n
56 (2.2)
max.
372 (14.6)
max.
3 maximum Not specified
DIMENSIONS = MM (INCHES)
Taped Component Dimensions
h h
p
p
Reference plane H1 L P1 F A B W0 H0 W1 W H H1
I2
I1
P0
D0
User direction of feed Cross section A - B
Figure 1
Reel Dimensions
t
Reel h d User direction of feed Upper side Tape
Lower side
f
h w
Figure 2
Specifications are subject to change without notice.

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