NT
Features
■
■
RX0
240012
1K
■
■
■
■
Radial Leaded Devices
Fast tripping resettable PTCs
Binned and sorted narrow resistance
ranges available
RoHS compliant*
Lead free
Agency recognition:
T V Rheinland
M
PL
Applications
■
■
■
IA
Customer Premise Equipment (CPE)
Central Office / Telecom Centers (CO)
Access equipment
*R
oH
S
CO
MF-RX/250 Series -
Telecom PTC Resettable Fuses
Electrical Characteristics
Max.
Interrupt
Ratings
Volts
Amps
(Vrms)
(A)
Max.
MF-RX012/250
MF-RX012/250-A
MF-RX012/250-C
MF-RX012/250-F
MF-RX012/250-1
MF-RX012/250-2
MF-RX012/250-T
MF-RX012/250U
MF-RX014/250
MF-RX014/250-A
MF-RX014/250-B
MF-RX014/250-T
MF-RX014/250U
MF-RX018/250
MF-RX018/250U
MF-RX018/250F
MF-RX018/250FU
60
60
60
60
60
60
60
60
60
60
60
60
60
60
60
100
100
250
250
250
250
250
250
250
250
250
250
250
250
250
250
250
250
250
Max.
3.0
3.0
3.0
3.0
3.0
3.0
3.0
3.0
3.0
3.0
3.0
3.0
3.0
10.0
10.0
10.0
10.0
One Hour
Post-Trip
Resistance
Ohms
at
23
°C
Max.
16.0
16.0
14.0
16.0
16.0
16.0
16.0
16.0
14.0
12.0
14.0
14.0
12.0
4.0
4.0
4.0
4.0
Model
Max.
Operating
Voltage
(Vdc)
Hold
Current
Amps
at
23
°C
IH
0.12
0.12
0.12
0.12
0.12
0.12
0.12
0.12
0.145
0.145
0.145
0.145
0.145
0.18
0.18
0.18
0.18
Initial
Resistance
Ohms
Ohms
at
at
23
°C
23
°C
Min.
4.0
7.0
5.5
6.0
6.0
8.0
7.0
6.0
3.0
3.0
4.5
5.4
3.5
0.8
0.8
0.8
0.8
Max.
8.0
9.0
7.5
10.5
9.0
10.5
12.0
10.0
6.0
5.5
6.0
7.5
6.5
2.0
2.0
2.2
2.2
“U” suffix indicates product without insulation coating.
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 ........................................................±15 % typical resistance change
+60°C, 1000 hours
±15 % typical resistance change
Humidity Aging ........................................................+85 °C, 85 % R.H. 500 hours ..........................................±15 % typical resistance change
Thermal Shock ........................................................MIL-STD-202F, Method 107G, ........................................±10 % typical resistance change
+125 °C to -55 °C,10 times
±15 % typical resistance change
Solvent Resistance ..................................................MIL-STD-202, Method 215B............................................No change
Lead Solerability ......................................................ANSI/J-STD-002 ..............................................................>95 % coverage
Flammability ............................................................IEC 695-2-2......................................................................No Flame for 60 secs.
Vibration ..................................................................MIL-STD-883C, Method 2007.1, Condition A..................±5 % typical resistance change
Test Procedures And Requirements For Model MF-RX/250 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
≤
R1max
Time to Trip ........................................................At specified current, Vmax, 23 °C ..............T
≤
typical 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 ................................................R02057213
*
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
■
■
■
Ability to withstand AC power cross conditions
Assists equipment with meeting ITU-T K.20/K.21/K.45
Assists equipment with meeting Telcordia GR-1089-C Intrabuilding
MF-RX/250 Series -
Telecom PTC Resettable Fuses
Thermal Derating Chart - Ihold (Amps)
Ambient Operating Temperature
Model
MF-RX012/250
MF-RX014/250
MF-RX018/250
MF-RX018/250F
-40
°C
0.186
0.225
0.269
0.279
-20°C
0.165
0.199
0.240
0.247
0
°C
0.143
0.172
0.211
0.213
23
°C
0.120
0.145
0.180
0.180
40
°C
0.099
0.119
0.153
0.147
50
°C
0.088
0.106
0.138
0.131
60
°C
0.077
0.093
0.123
0.115
70
°C
0.066
0.080
0.109
0.099
85
°C
0.050
0.060
0.087
0.074
Itrip is approximately two times Ihold.
Product Dimensions
Model
MF-RX012/250
MF-RX012/250U
MF-RX014/250
MF-RX014/250U
MF-RX018/250
MF-RX018/250U
MF-RX018/250F
MF-RX018/250FU
A
Max.
6.5
(0.256)
6.0
(0.236)
6.5
(0.256)
6.0
(0.236)
11.0
(0.433)
10.4
(0.409)
9.0
(0.354)
8.1
(0.319)
B
Max.
11.0
(0.433)
10.0
(0.394)
11.0
(0.433)
10.0
(0.394)
13.6
(0.535)
12.6
(0.496)
12.5
(0.492)
12.5
(0.492)
TAPE & REEL:
Style 2
A
E
A
E
C
Nom.
5.1 ± 0.7
(0.201 ± 0.028)
5.1 ± 0.7
(0.201 ± 0.028)
5.1 ± 0.7
(0.201 ± 0.028)
5.1 ± 0.7
(0.201 ± 0.028)
5.1 ± 0.7
(0.201 ± 0.028)
5.1 ± 0.7
(0.201 ± 0.028)
5.1 ± 0.7
(0.201 ± 0.028)
5.1 ± 0.7
(0.201 ± 0.028)
D
Min.
4.7
(0.185)
4.7
(0.185)
4.7
(0.185)
4.7
(0.185)
4.7
(0.185)
4.7
(0.185)
4.7
(0.185)
4.7
(0.185)
E
Max.
4.6
(0.181)
3.8
(0.150)
4.6
(0.181)
3.8
(0.150)
4.6
(0.181)
3.8
(0.150)
3.8
(0.150)
3.0
(0.118)
Physical Characteristics
Lead Dia.
Style
Material
0.65
1
Sn/Cu
(0.026)
0.65
3
Sn/Cu
(0.026)
0.65
1
Sn/Cu
(0.026)
0.65
3
Sn/Cu
(0.026)
0.65
1
Sn/Cu
(0.026)
0.65
3
Sn/Cu
(0.026)
0.65
2
Sn/Cu
(0.026)
0.65
4
Sn/Cu
(0.026)
DIMENSIONS =
MM
(INCHES)
Packaging options: BULK: 500 pcs. per bag.
Style 1
1500 pcs. per reel (available binned).
Typical Part Marking
B
B
Represents total content. Layout may vary.
MF-RX012/250 ~ MF-RX018/250:
MANUFACTURER'S
TRADEMARK
DATE CODE
(FIRST DIGIT =
LAST DIGIT OF YEAR;
SECOND DIGIT = MONTH,
AS FOLLOWS:
1-9 = JAN-SEPT
X,Y,Z = OCT-DEC)
RX012
24001K
BATCH/LOCATION
(3 DIGITS = BATCH CODE;
K = KOREA
S = CHINA)
PART
IDENTIFICATION
D
C
D
C
Style 3
A
E
Style 4
A
E
NOTE: UNCOATED PARTS HAVE NO PART MARKING.
MARKING IS ON LABEL ONLY.
B
B
MF-RX018/250F:
MANUFACTURER'S
TRADEMARK
RX018F
5220S
PART
IDENTIFICATION
D
C
D
C
Specifications are subject to change without notice.
Customers should verify actual device performance in their specific applications.
DATE CODE
(FIRST DIGIT =
LAST DIGIT OF YEAR;
NEXT THREE DIGITS =
DAY OF YEAR)
MANUFACTURING
CODE
(S = CHINA)
MF-RX/250 Series -
Telecom PTC Resettable Fuses
How to Order
Typical Time to Trip at 23
°
C
1000
MF - RX 012/250 U - A 5 - 2
Multifuse
®
Product
Designator
Series
RX = Radial Leaded
Component
Hold Current, Ihold
008-018 (0.08-0.18 Amps)
Max. Interrupt Voltage, V
250 (250 Volts)
Telecom Options
F = Round Version (MF-RX018/250F only)
U = Uncoated (radial parts only)
FU = Round Version/Uncoated
Resistance Sorted
Narrow resistance ranges - see Resistance
Options chart (Not available with
MF-RX018/250F & FU versions)
Resistance Bins of 0.5 ohms
05 = 0.5 ohm binned parts (epoxy coated)
5 = 0.5 ohm binned parts (uncoated)
(Not available with MF-RX018/250F & FU
versions)
Packaging Options
- 0 = Bulk Packaging
- 2 = Tape and Reel* (available with binned
option)
*Packaged per EIA486-B
100
Time to Trip (Seconds)
10
1
MF-RX018/250, MF-RX018/250F,
MF-RX018/250U, MF-RX018/250FU
MF-RX014/250 & MF-RX014/250U
MF-RX012/250 & MF-RX012/250U
0.10
0.01
0
0.2 0.4
0.6
0.8
1.0
1.2
1.4
1.6
1.8
2.0 2.2
2.4
2.6
2.8 3.0
Fault Current (Amps)
Resistance Options
Initial
Resistance Values
Ohms @ 23
°C
Min.
Max.
4.0
8.0
7.0
9.0
5.5
7.5
6.0
10.5
6.0
9.0
8.0
10.5
7.0
12.0
6.0
10.0
3.0
6.0
3.0
5.5
4.5
6.0
3.5
6.5
0.8
2.2
R1max
Ohms @ 23
°C
Max.
16.0
16.0
14.0
16.0
16.0
16.0
16.0
16.0
14.0
12.0
14.0
12.0
4.0
Bin
Model
MF-RX012/250
MF-RX012/250-A05
MF-RX012/250-C05
MF-RX012/250-F05
MF-RX012/250-105
MF-RX012/250-205
MF-RX012/250-T05
MF-RX012/250U
MF-RX014/250
MF-RX014/250-A05
MF-RX014/250-B05
MF-RX014/250U
MF-RX018/250-F05
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
MF-RX/250, REV. G, 08/06
Specifications are subject to change without notice.
Customers should verify actual device performance in their specific applications.
MF-R, MF-R/72, MF-R/90, MF-R/600, MF-RX, 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:
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-RX110/72–MF-RX185/72, MF-R/72
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)
±1
(±.039)
±0.3
(±.012)
±0.6
(±.024)
20 consecutive
12.7
(0.5)
25.4
(1.0)
Device pitch:
MF-R185–MF-R400, MF-RX110–MF-RX375
MF-R/600, MF-RX250/72–MF-RX375/72
Tape thickness
Tape thickness with splice:
MF-R010–MF-R160,
MF-R/72, MF-RX110/72–MF-RX185/72,
t
t
t1
t1
0.9
(.035)
1.5
(.059)
2.3
(.091)
max.
max.
max.
±0.3
(±.012)
±1.0
(±.039)
±1.3
(±.051)
±0.2
(±.008)
Tape thickness with splice:
MF-R250–MF-R1100
MF-RX110–MF-RX375, MF-R/90, MF-RX250/72–MF-RX375/72
Splice sprocket hole alignment
Body lateral deviation
Body tape plane deviation
Lead spacing
Reel width
Reel diameter
Space between flanges less device
∆h
∆p
F
w
d
W1
∆h
∆p
F
W2
a
h
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.
Customers should verify actual device performance in their specific applications.
MF-R, MF-R/72, MF-R/90, MF-R/600, MF-RX, 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
IEC
Mark
f
h
EIA
Mark
c
n
Dimensions
Dimensions
Tolerance
26
(1.024)
80
(3.15)
±12.0
(±.472)
max.
Core diameter: MF-RX/250, MF-R/600
Box: MF-R, MF-RX, MF-R/90
Box: MF-RX/250
Box: MF-R/600
Consecutive missing places: MF-R, MF-RX, MF-R/90
Consecutive missing places: MF-RX/250, MF-R/600
Empty places per reel: MF-R, MF-RX, MF-R/90
Empty places per reel: MF-RX/250, MF-R/600
h
n
56
(2.2)
67
(2.64)
64
(2.52)
91
(3.58)
372
(14.6)
372
(14.6)
372
(14.6)
372
(14.6)
362
(14.25)
362
(14.25)
max.
max.
max.
max.
max.
3
none
Not specified
0.1 %
Taped Component Dimensions - Figure 1
∆h
∆h
∆p
∆p
Reference plane
H
1
L
P
1
F
A
B
W
0
H
0
W
1
W
H
H
1
DIMENSIONS =
MM
(INCHES)
I
2
I
1
P
0
D
0
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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