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NT
Features
RX 1 018 10 0T
Radial Leaded Devices Cured, flame retardant epoxy polymer insulating material meets UL 94V-0 requirements Agency recognition: RoHS compliant*
T V Rheinland
*R
oH
The MF-RX Series is currently available, although not recommended for new designs. The higher voltage rated MF-RX/72 Series is preferred.
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MF-RX Series - PTC Resettable Fuses
Electrical Characteristics
Initial Resistance Ohms at 23 C Min. Max.
1 Hour (R1) Post-Trip Resistance
Ihold Model V max. Volts I max. Amps
Itrip
Max. Time To Trip Amperes at 23 C Seconds at 23 C
Tripped Power Dissipation
Amperes at 23 C Hold Trip
Ohms at 23 C Max.
Watts at 23 C Typ.
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 ........................-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 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 -40 C 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 -20 C 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 0 C 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 23 C 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 40 C 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 50 C 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 60 C 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 70 C 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 85 C 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
*RoHS Directive 2002/95/EC Jan 27 2003 including Annex. Specifications are subject to change without notice. Customers should verify actual device performance in their specific applications.
Additional Features

Applications
Almost anywhere there is a low voltage power supply, up to 60 V and a load to be protected, including: Security and fire alarm systems Loud speakers Power transformers
Bulk packaging, tape and reel and AmmoPak available on most models 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)
How to Order
Typical Time to Trip at 23 C
MF -R MF X110 -R MF X135 -R MF X160 -R MF X185 -R MF X250 -R MF X300 -RX 375
1000 100
MF - RX 110 - 0 - 99
B
D
C
NOTE: Kinked lead option is available for board standoff. Contact factory for details.
- 2 = Tape and Reel without part number suffix option* - 2-99 = Tape and Reel with part number suffix option - AP = Ammo-Pak* - 0-14 = Kinked leads where straight leads are standard - 0-17 = Straight leads where kinked leads are standard Part Number Suffix Option - 99 = As of date code April 1, 2005 all MF-RX models are RoHS compliant. The suffix "-99" can be used if a new part number is required to reference the RoHS compliance. Examples: MF-RX110 ..........................................Bulk packaging MF-RX110-0-99 ....Bulk packaging with part number suffix option MF-RX110-2 ..........Tape and reel packaging MF-RX110-2-99 ....Tape and reel packaging with part number suffix option *Packaged per EIA486-B
Time to Trip (Seconds)
Multifuse(R) Product Designator Series RX = Radial Leaded Component Hold Current, Ihold 110-375 (1.10 Amps - 3.75 Amps) Packaging Options - __ = Bulk Packaging without part number suffix option - 0-99 = Bulk Packaging with part number suffix option
10
Typical Part Marking
Represents total content. Layout may vary.
PART IDENTIFICATION DATE CODE (FIRST DIGIT = LAST DIGIT OF YEAR; NEXT THREE DIGITS = DAY OF YEAR) MANUFACTURER'S TRADEMARK RX110 0180T LOT NO. (T = TAIWAN S = CHINA)
1
0.1
0.01
0.001 1 10 100
Fault Current (Amps)
Specifications are subject to change without notice. Customers should verify actual device performance in their specific applications.
MF-RX SERIES, REV. L, 02/06
MF-R, MF-RX, MF-R/90, MF-RX/72 & MF-RX/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 W0 EIA Mark W W4 Dimensions Dimensions Tolerance
18 (.709) 11 (.433) -0.5/+1.0 (-0.02/+.039)
Dimension Description Carrier tape width Hold down tape width: all others 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 (straight lead) Abscissa to top (kinked lead) Overall width w/lead protrusion (straight lead) Overall width w/lead protrusion (kinked lead) Overall width w/o lead protrusion (straight lead) Overall width w/o lead protrusion (kinked lead) Lead protrusion Protrusion of cutout Protrusion beyond hold tape Sprocket hole pitch Pitch tolerance Device pitch: MF-R005-MF-R160, MF-R/90 & MF-RX/72 Device pitch: MF-R185-MF-R400, MF-RX110-MF-RX375 Tape thickness Tape thickness with splice: MF-R010-MF-R160 Tape thickness with splice: MF-R250-MF-R1100 MF-RX110-MF-RX375 & MF-R/90 Splice sprocket hole alignment Body lateral deviation Body tape plane deviation Lead spacing Reel width Reel diameter Space between flanges less device
min.
No protrusion W2 W1 D0 H H0 H1 H1 W6 W5 D0 H H0 H1 H1 C1 C1 C2 C2 I1 L I2 P0 L1 L I2 P0
3 (.118) 9 (.354) 4 (.157) 18.5 (.728) 16 (.63) 38.0 (1.496) 32.2 (1.268) 55.0 (2.165) 43.2 (1.7) 54.0 (2.126) 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. max. max. max.
Not specified
12.7 (0.5) 0.3 (.012)
20 consecutive
12.7 (0.5) 25.4 (1.0)
1
t
t t1 t1
0.9 (.035) 1.5 (.059) 2.3 (.091)
max. max. max.
0.3 (.012) 1.0 (.039) 0.3 (.021) 0.2 (.008)
0 h p F w d W1 h p F W2 a h 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. Customers should verify actual device performance in their specific applications.
MF-R, MF-RX, MF-R/90, MF-RX/72 & MF-RX/250 Series Tape and Reel Specifications
Dimension Description Arbor hole diameter Core diameter: MF-R, MF-RX, MF-R/90 Box: MF-R, MF-RX, MF-R/90 Consecutive missing places: MF-R, MF-RX, MF-R/90 Empty places per reel: MF-R, MF-RX, MF-R/90
IEC Mark f h
EIA Mark c n
Dimensions Dimensions Tolerance
26 (1.024) 80 (3.15) 56 (2.2) 372 (14.6) 372 (14.6) 12.0 (.472)
max. max.
3 Not specified
max.
Taped Component Dimensions - Figure 1
h h p p
Reference plane H1 L P1 F A B W0 H0 W1 W H H1
DIMENSIONS = MM (INCHES)
I2
I1
P0
D0
User direction of feed Cross section A - B
Reel Dimensions - Figure 2
t Reel h d User direction of feed Upper side Tape
Lower side
f
h w
Specifications are subject to change without notice. Customers should verify actual device performance in their specific applications.

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