Specifications are subject to change without notice.Specifications are subject to change without notice.
MF-RX Series - PTC Resettable Fuses
X110
0180T
R
Electrical Characteristics
Features
■Radial Leaded Devices
■Cured, flame retardant epoxy polymer
insulating material meets
UL 94V-0 requirements
■Bulk packaging, tape and reel and Ammo-
Pak available on most models
■Agency recognition:
Applications
Almost anywhere there is a low voltage
power supply, up to 60V and a load to be
protected, including:
■Security and fire alarm systems
■Loud speakers
■Power transformers
1 Hour (R1)Max. Time Tripped
Ihold Itrip Initial Post-Trip To Trip Power
Resistance Resistance Dissipation
Model Amperes Ohms Ohms Amperes Seconds Watts
V max. I max.
at 23°C at 23°C at 23°C at 23°C at 23°C at 23°C
Volts Amps
Hold Trip Min. Max. Max. Typ.
MF-RX110 60 40 1.10 2.20 0.15 0.25 0.38 5.5 8.2 1.50
MF-RX135 60 40 1.35 2.70 0.12 0.19 0.30 6.75 9.6 1.70
MF-RX160 60 40 1.60 3.20 0.09 0.14 0.22 8.0 11.4 1.90
MF-RX185 60 40 1.85 3.70 0.08 0.12 0.19 9.25 12.6 2.10
MF-RX250 60 40 2.50 5.00 0.05 0.08 0.13 12.5 15.6 2.50
MF-RX300 60 40 3.00 6.00 0.04 0.06 0.10 15.0 19.8 2.80
MF-RX375 60 40 3.75 7.50 0.03 0.05 0.08 18.75 24.0 3.20
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....................................................+125°C to -55°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
Environmental Characteristics
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
TÜV File Number ................................................R2057213
Test Procedures And Requirements For Model MF-RX Series
Thermal Derating Chart - Ihold / Itrip (Amps)
Ambient Operating Temperature
Model -40˚C -20˚C 0˚C 23˚C 40˚C 50˚C 60˚C 70˚C 85˚C
MF-RX110 1.71 / 3.42 1.50 / 3.00 1.31 / 2.62 1.10 / 2.20 0.89 / 1.78 0.79 / 1.58 0.69 / 1.38 0.59 / 1.18 0.44 / 0.88
MF-RX135 2.09 / 4.18 1.84 / 3.68 1.61 / 3.22 1.35 / 2.70 1.09 / 2.18 0.97 / 1.94 0.85 / 1.70 0.73 / 1.46 0.54 / 1.08
MF-RX160 2.48 / 4.96 2.18 / 4.36 1.90 / 3.80 1.60 / 3.20 1.30 / 2.60 1.15 / 2.30 1.01 / 2.02 0.86 / 1.72 0.64 / 1.28
MF-RX185 2.87 / 5.74 2.52 / 5.04 2.20 / 4.40 1.85 / 3.70 1.50 / 3.00 1.33 / 2.66 1.17 / 2.34 1.00 / 2.00 0.74 / 1.48
MF-RX250 3.88 / 7.76 3.40 / 6.80 2.98 / 5.96 2.50 / 5.00 2.03 / 4.06 1.80 / 3.60 1.58 / 3.16 1.35 / 2.70 1.00 / 2.00
MF-RX300 4.65 / 9.30 4.08 / 8.16 3.57 / 7.14 3.00 / 6.00 2.43 / 4.86 2.16 / 4.32 1.89 / 3.78 1.62 / 3.24 1.20 / 2.40
MF-RX375 5.81 / 11.6 5.10 / 10.2 4.46 / 8.92 3.75 / 7.50 3.04 / 6.08 2.70 / 5.40 2.36 / 4.72 2.03 / 4.06 1.50 / 3.00
Specifications are subject to change without notice.Specifications are subject to change without notice.
How to Order
MF - RX 110 - __
Multifuse®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 MF-RX SERIES, REV. H, 11/02
AE
B
D
C
Product Dimensions
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
MF-RX Series - PTC Resettable Fuses
Additional Features
■Resettable circuit protection
■Patents pending
AB CDEPhysical Characteristics
Model Max. Max. Nom. Tol. ± Min. Max. Style Lead Dia. Material
MF-RX110 13.0 18.0 5.1 0.7 7.6 3.1 10.81 Sn/Cu
(0.512) (0.709) (0.201) (0.028) (0.299) (0.122) (0.032)
MF-RX135 14.5 19.6 5.1 0.7 7.6 3.1 10.81 Sn/Cu
(0.571) (0.772) (0.201) (0.028) (0.299) (0.122) (0.032)
MF-RX160 16.3 21.3 5.1 0.7 7.6 3.1 10.81 Sn/Cu
(0.642) (0.839) (0.201) (0.028) (0.299) (0.122) (0.032)
MF-RX185 17.8 22.9 5.1 0.7 7.6 3.1 10.81 Sn/Cu
(0.701) (0.902) (0.201) (0.028) (0.299) (0.122) (0.032)
MF-RX250 21.3 26.4 10.2 0.7 7.6 3.1 10.81 Sn/Cu
(0.839) (1.039) (0.402) (0.028) (0.299) (0.122) (0.032)
MF-RX300 24.9 30.0 10.2 0.7 7.6 3.1 10.81 Sn/Cu
(0.980) (1.181) (0.402) (0.028) (0.299) (0.122) (0.032)
MF-RX375 28.4 33.5 10.2 0.7 7.6 3.1 10.81 Sn/Cu
(1.118) (1.319) (0.402) (0.028) (0.299) (0.122) (0.032)
Typical Part Marking
Represents total content. Layout may vary.
RX110
0180T
MANUFACTURER'S
TRADEMARK
PART
IDENTIFICATION LOT NO.
(T = TAIWAN
S = CHINA)
DATE CODE
(FIRST DIGIT =
LAST DIGIT OF YEAR;
NEXT THREE DIGITS =
DAY OF YEAR)
NOTE: Kinked lead option is available for
board standoff. Contact factory for
details.
Typical Time to Trip at 23˚C
0.01
0.001 110100
0.1
1
10
100
1000
Fault Current (Amps)
Time to Trip (Seconds)
MF-RX110
MF-RX135
MF-RX160
MF-RX185
MF-RX250
MF-RX300
MF-RX375
MM
(INCHES)
DIMENSIONS =
0.81 (20AWG)
Specifications are subject to change without notice.
Devices taped using EIA468–B/IEC286-2 standards. See table below and Figures 1 and 2 for details.
IEC EIA Dimensions
Dimension Description Mark Mark Dimensions Tolerance
Carrier tape width WW
Hold down tape width W4 ref.
Hold down tape W0 No protrusion
Top distance between tape edges W2 W6 max.
Sprocket hole position W1 W5
Sprocket hole diameter D0 D0
Abscissa to plane (straight lead) HH
Abscissa to plane (kinked lead) H0 H0
Abscissa to top H1 H1 max.
Overall width w/lead protrusion C1 max.
Overall width w/o lead protrusion C2 max.
Lead protrusion I1 L1 max.
Protrusion of cutout LL max.
Protrusion beyond hold tape I2 I2 Not specified
Sprocket hole pitch P0 P0
Pitch tolerance 20 consecutive ±1
Device pitch: MF-R010 – MF-R160 & MF-R/90
Device pitch: MF-R185 – MF-R400
Device pitch: MF-RX110 – MF-RX160
Device pitch: MF-RX185 – MF-RX375
Device pitch: MF-R/250
Tape thickness tt max.
Tape thickness with splice t1 max.
Splice sprocket hole alignment 0
Body lateral deviation ∆h∆h0
Body tape plane deviation ∆p∆p0
Lead seating plane deviation ∆P1 P1 0
Lead spacing FF
Reel width ww max.
Reel diameter da max.
Space between flanges less device
MF-R, MF-RX, MF-R/90 & MF-R/250 Series Tape and Reel Specifications
18
(.709) -0.5/+1.0
(-0.02/+.039)
9
(.354) -0.5/+0.75
(-0.02/+0.03)
4
(.157) ±0.2
(±.0078)
18.5
(.728) ±3.0
(±.118)
16
(.63)
32.2
(1.268)
43.2
(1.7)
42.5
(1.673)
1.0
(.039)
11
(.433)
±0.5
(±.02)
12.7
(0.5)
12.7
(0.5)
12.7
(0.5)
25.4
(1.0)
12.7
(0.5)
12.7
(0.5)
0.9
(.035)
2.0
(.079)
5.08
(0.2)
56
(2.205)
370
(14.57)
±0.3
(±.012)
±0.3
(±.012)
±1.0
(±.039)
±1.3
(±.051)
±0.7
(±.028)
±0.8
(±.035)
4.75
(.187) ±3.25
(±.128)
13
(.512)
3
(.118)
DIMENSIONS = MM
(INCHES)
Specifications are subject to change without notice.
MF-R, MF-RX, MF-R/90 & MF-R/250 Series Tape and Reel Specifications
t
User direction of feed
Cross section A - B
∆p∆p
HH1
Reference plane
W0
H0W1W
AB
F
D0
P0
I1
I2
L
H1 P1
∆h
∆h
h
w
h
f
d
Reel
Upper side
Tape
Lower side
User
direction
of
feed
Figure 1
Figure 2
Reel Dimensions
Taped Component Dimensions
IEC EIA Dimensions
Dimension Description Mark Mark Dimensions Tolerance
Space between flanges less device
Arbor hole diameter fc
Core diameter hn max.
Box max.
Consecutive missing places 3 maximum
Empty places per reel Not specified
4.75
(.187) ±3.25
(±.128)
26
(1.024)
80
(3.15)
56
(2.2) 372
(14.6) 372
(14.6)
±12.0
(±.472)
DIMENSIONS = MM
(INCHES)
