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IA
NT
Features

R0 12255 0S
Applications
Almost anywhere there is a load to be protected with a voltage supply of up to 90 V, including: Broadband cable power passing taps Set-top boxes

Radial Leaded Devices Cured, flame retardant epoxy polymer insulating material meets UL 94V-0 requirements RoHS compliant* Lead free Agency recognition:
T V Rheinland
*R
oH
S
CO
M
PL
MF-R/90 Series - PTC Resettable Fuses
Electrical Characteristics
One Hour Post-Trip Resistance Standard Trip Ohms at 23 C Maximum Time To Trip Amps at 23 C Seconds at 23 C Nominal Tripped Power Dissipation Watts at 23 C
Ihold
Itrip
Initial Resistance Values Ohms at 23 C
Model
V max. Volts
I max. Amps
Amps at 23 C
Amps at 23 C
Hold MF-R055/90 MF-R055/90U MF-R075/90 90 90 90 10 10 10 0.55 0.55 0.75
Trip 1.1 1.1 1.5
Min. 0.45 0.45 0.37
Max. 0.9 0.9 0.75
Max. 2.0 2.0 1.65
Typ. 2.0 2.0 2.5
1.6 1.6 2.0
60 28 60
"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 ....................................5 % typical resistance change Humidity Aging....................................................+85C, 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 Test Procedures And Requirements For Model MF-R/90 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 ........................................................At specified current, 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-R055/90 MF-R055/90U MF-R075/90 -40 C 0.85 / 1.7 0.85 / 1.7 1.15 / 2.3 -20 C 0.75 / 1.5 0.75 / 1.5 1.0 / 2.0 0 C 0.65 / 1.3 0.65 / 1.3 0.9 / 1.8 23 C 0.55 / 1.1 0.55 / 1.1 0.75 / 1.5 40 C 0.45 / 0.9 0.45 / 0.9 0.61 / 1.22 50 C 0.4 / 0.8 0.4 / 0.8 0.55 / 1.1 60 C 0.35 / 0.7 0.35 / 0.7 0.48 / 0.96 70 C 0.3 / 0.6 0.3 / 0.6 0.41 / 0.82 85 C 0.22 / 0.44 0.22 / 0.44 0.30 / 0.6
*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

Bulk packaging, tape and reel and Ammo-Pak available on most models Patents pending
MF-R/90 Series - PTC Resettable Fuses
Product Dimensions
Model MF-R055/90 MF-R055/90U MF-R075/90
Packaging options: BULK: 500 pcs. per bag.
A Max. 10.9 (0.43) 10.3 (0.4) 11.9 (0.47)
B Max. 14.0 (0.55) 10.3 (0.4) 15.5 (0.61)
C (Pitch) 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)
D Min. 6.3 (0.248) 6.3 (0.248) 6.3 (0.248)
E Max. 3.6 (0.142) 3.0 (0.118) 3.6 (0.142)
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)
DIMENSIONS = MM (INCHES)
TAPE & REEL: 1500 pcs. per reel.
AMMO-PACK: 1000 pcs. per pack
Style 1
A E
Typical Part Marking
Represents total content. Layout may vary.
MANUFACTURER'S TRADEMARK R055 1220S LOT NO. (S = CHINA)
How to Order
MF - R 055/90 U - 0
Multifuse Product Designator
(R)
B
PART IDENTIFICATION DATE CODE (FIRST DIGIT = LAST DIGIT OF YEAR; NEXT THREE DIGITS = DAY OF YEAR)
Series R = Radial Leaded Component Hold Current, Ihold 055, 075 (0.55 Amps - 0.75 Amps) Max. Voltage, V Coating __ = Coated U = Uncoated Packaging Options - 0 = Bulk Packaging - 2 = Tape and Reel* - AP = Ammo-Pak* *Packaged per EIA486-B
D
C
Also available with straight leads.
Typical Time to Trip at 23 C
100
Time to Trip (Seconds)
10
1
MF-R075/90 MF-R055/90 MF-R055/90U 0.1 1 10
Fault Current (Amps)
MF-R/90, REV. D, 11/04
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 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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