Specifications are subject to change without notice.
MF-RX Series -
PTC Resettable Fuses
X110
0180T
R
Electrical Characteristics
Features
I
Radial Leaded Devices
I
Cured, flame retardant epoxy polymer
insulating material meets
UL 94V-0 requirements
I
Bulk packaging, tape and reel and Ammo-
Pak available on most models
I
Agency recognition:
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
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 23C
at 23C
at 23C
at 23C
at 23C at
23C
Volts
Amps
Hold
Trip
Min.
Max.
Max.
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 ........................-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
Environmental Characteristics
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
TV File Number ................................................R2057213
Test Procedures And Requirements For Model MF-RX Series
Thermal Derating Chart - Ihold / Itrip (Amps)
Ambient Operating Temperature
Model
-40C
-20C
0C
23C
40C
50C
60C
70C
85C
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.
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. G, 08/01
A
E
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
I
Resettable circuit protection
I
Patents pending
A
B
C
D
E
Physical 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
1
0.81
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
1
0.81
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
1
0.81
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
1
0.81
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
1
0.81
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
1
0.81
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
1
0.81
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 23C
0.01
0.001
1
10
100
0.1
1
10
100
1000
Fault Current (Amps)
T
ime to T
rip (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.
Tape and Reel Specifications
Devices taped using EIA468B/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
W
W
Hold down tape width
W4
min.
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)
H
H
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
L
L
max.
Protrusion beyond hold tape
I2
I2
Not specified
Sprocket hole pitch
P0
P0
Pitch tolerance
20 seconds
1 second
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
t
t
max.
Tape thickness with splice
t1
max.
Splice sprocket hole alignment
0
Body lateral deviation
h
h
0
Body tape plane deviation
p
p
0
Lead seating plane deviation
P1
P1
0
Lead spacing
F
F
Reel width
w
w
max.
Reel diameter
d
a
max.
Space between flanges less device
MF-R, MF-RX & 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)
25.4
(1.0)
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)
5
(.197)
3
(.118)
DIMENSIONS =
MM
(INCHES)
Specifications are subject to change without notice.
MF-R, MF-RX & MF-R/250 Series Tape and Reel Specifications
t
User direction of feed
Cross section A - B
p
p
H
H
1
Reference plane
W
0
H
0
W
1
W
A
B
F
D
0
P
0
I
1
I
2
L
H
1
P
1
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
f
c
Core diameter
h
n
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)
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