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 ................................................ +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 ...................................................... 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
Electrical Characteristics
Model V max.
Volts
I max.
Amps
Ihold
Itrip
Initial
Resistance
Values
One Hour
Post-Trip
Resistance
Standard Trip
Max. Time
to Trip
Nominal
Tripped
Power
Dissipation
Amperes
at 23 °C
Ohms
at 23 °C
Ohms
at 23 °C
Amperes
at 23 °C
Seconds
at 23 °C
Watts
at 23 °C
Hold Trip Min. Max. Max. Typ.
MF-R055/90 90 10 0.55 1.1 0.45 0.9 2.0 1.6 60 2.0
MF-R055/90U 90 10 0.55 1.1 0.45 0.9 2.0 1.6 28 2.0
MF-R075/90 90 10 0.75 1.5 0.37 0.75 1.65 2.0 60 2.5
Features
■ Radial leaded devices
■ Cured, fl ame retardant epoxy polymer
insulating material meets UL 94V-0
requirements
■ RoHS compliant*
■ Agency recognition:
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
MF-R/90 Series - PTC Resettable Fuses
*RoHS Directive 2002/95/EC Jan 27, 2003 including Annex.
Specifi cations are subject to change without notice.
Customers should verify actual device performance in their specifi c applications.
*RoHS COMPLIANT
Thermal Derating Chart - Ihold / Itrip (Amps)
Model Ambient Operating Temperature
-40 ºC -20 ºC 0 ºC 23 ºC 40 ºC 50 ºC 60 ºC 70 ºC 85 ºC
MF-R055/90 0.85 / 1.7 0.75 / 1.5 0.65 / 1.3 0.55 / 1.1 0.45 / 0.9 0.4 / 0.8 0.35 / 0.7 0.3 / 0.6 0.22 / 0.44
MF-R055/90U 0.85 / 1.7 0.75 / 1.5 0.65 / 1.3 0.55 / 1.1 0.45 / 0.9 0.4 / 0.8 0.35 / 0.7 0.3 / 0.6 0.22 / 0.44
MF-R075/90 1.15 / 2.3 1.0 / 2.0 0.9 / 1.8 0.75 / 1.5 0.61 / 1.22 0.55 / 1.1 0.48 / 0.96 0.41 / 0.82 0.30 / 0.6
R
1220S
5
05
“U” suffi x indicates product without insulation coating.
Specifi cations are subject to change without notice.
Customers should verify actual device performance in their specifi c applications.
MF-R/90 Series - PTC Resettable Fuses
Additional Features
■ Bulk packaging, tape and reel and Ammo-Pak available on most models
Product Dimensions
A B C (Pitch) D E Physical Characteristics
Model Max. Max. Nom. Min. Max. Style Lead Dia. Material
MF-R055/90 10.9 16.7 5.1 ± 0.7 6.3 3.6 1 0.81
Sn/Cu
(0.43) (0.65) (0.201 ± 0.028) (0.248) (0.142) (0.032)
MF-R055/90U 10.3 16.7 5.1 ± 0.7 6.3 3.0 1 0.81
Sn/Cu
(0.4) (0.65) (0.201 ± 0.028) (0.248) (0.118) (0.032)
MF-R075/90 11.9 15.5 5.1 ± 0.7 6.3 3.6 1 0.81
Sn/Cu
(0.47) (0.61) (0.201 ± 0.028) (0.248) (0.142) (0.032)
Packaging options:
BULK: 500 pcs. per bag. TAPE & REEL: 1500 pcs. per reel. AMMO-PACK: 1000 pcs. per pack DIMENSIONS: MM
(INCHES)
Also available with straight leads.
How to Order
MF - R 055/90 U - 0
Multifuse®
Product
Designator
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
AE
B
D
C
Style 1 Typical Part Marking
Represents total content. Layout may vary.
R055
1220S
MANUFACTURER'S
TRADEMARK
PART
IDENTIFICATION
LOT NO.
(S = CHINA)
DATE CODE
(FIRST DIGIT =
LAST DIGIT OF YEAR;
NEXT THREE DIGITS =
DAY OF YEAR)
Typical Time to Trip at 23 ˚C
Fault Current (Amps)
Time to Trip (Seconds)
1
1
0.1
10
100
10
MF-R055/90
MF-R055/90U
MF-R075/90
MF-R/90, REV. F 05/11
IEC EIA Dimensions
Dimension Description Mark Mark Dimensions Tolerance
Carrier tape width W W 18 -0.5/+1.0
(.709) (-0.02/+.039)
Hold down tape width W4 11
min.
W0 (.433)
Hold down tape No protrusion
Top distance between tape edges W2 W
6 3
max.
(.118)
Sprocket hole position W1 W
5 9 -0.5/+0.75
(.354) (-0.02/+0.03)
Sprocket hole diameter D0 D
0 4 ±0.2
(.157) (±.0078)
Abscissa to plane (straight lead) H H 18.5 ±3.0
(.728) (±.118)
Abscissa to plane (kinked lead) H0 H
0 16 ±0.5
(.63) (±.02)
Abscissa to top (straight lead) H1 H
1 38.0
max.
(1.496)
Abscissa to top (kinked lead) H1 H
1 32.2
max.
(1.268)
Overall width w/lead protrusion (straight lead) C1 55.0
max.
(2.165)
Overall width w/lead protrusion (kinked lead) C1 43.2
max.
(1.7)
Overall width w/o lead protrusion (straight lead) C2 54.0
max.
(2.126)
Overall width w/o lead protrusion (kinked lead) C2 42.5
max.
(1.673)
Lead protrusion I1 L
1 1.0
max.
(.039)
Protrusion of cutout L L 11
max.
(.433)
Protrusion beyond hold-down tape I2 I
2 Not specifi ed
Sprocket hole pitch P0 P
0 12.7 ±0.3
(0.5) (±.012)
Pitch tolerance 20 consecutive ±1
(±.039)
Device pitch: MF-R005–MF-R160, MF-R/90,
MF-RX110/72–MF-RX185/72
12.7 ±0.3
(0.5) (±.012)
Device pitch: MF-R185–MF-R400, MF-RX110–MF-RX375
MF-R/600, MF-RX250/72–MF-RX375/72
25.4 ±0.6
(1.0) (±.024)
Tape thickness t t 0.9
max.
(.035)
Tape thickness with splice: MF-R010–MF-R160, t1
max.
MF-RX110/72–MF-RX185/72
1.5
(.059)
Tape thickness with splice: MF-R250–MF-R1100, t1
max.
MF-RX110–MF-RX375, MF-R/90, MF-RX250/72-MF-RX375/72 2.3
(.091)
Splice sprocket hole alignment
0 ±0.3
(±.012)
Body lateral deviation Δh Δh 0
±1.0
(±.039)
Body tape plane deviation Δp Δp 0
±1.3
(±.051)
MF-R, MF-R/90, MF-R/600, MF-RX, MF-RX/72 & MF-RX/250 Series
Tape and Reel Specifi cations
Specifi cations are subject to change without notice.
Customers should verify actual device performance in their specifi c applications.
Devices taped using EIA468–B/IEC286-2 standards. See table below and Figures 1 and 2 for details.
DIMENSIONS: MM
(INCHES)
h
w
h
f
d
Reel
Upper side
Tape
Lower side
User
direction
of
feed
t
User direction of feed
Cross section A - B
pp
H
H1
Reference plane
W0
H0W1
W
AB
F
D0
P0
I1
I2
L
H1
P1
h
h
IEC EIA Dimensions
Dimension Description Mark Mark Dimensions Tolerance
Lead spacing: MF-R, MF-R/90, MF-R/600, MF-RX, MF-RX/72 F F 5.08 ±0.2
(0.2) (±0.008)
Lead spacing: MF-RX/250 F F 5.08 -0.5/+0.6
(0.2) (-.020/+.024)
Reel width w W2 56.0
max.
(2.205)
Reel diameter d a 370.0
max.
(14.57)
Space between fl anges less device 4.75 ±3.25
W1 h (.187) (±.128)
Arbor hole diameter f c 26.0 ±12.0
(1.024) (±.472)
Core diameter: MF-R, MF-RX, MF-R/90 h n 80
max.
(3.15)
Core diameter: MF-RX/250, MF-R/600 h n 91
max.
(3.58)
Box: MF-R, MF-RX, MF-R/90 56 372 372
max.
(2.2) (14.6) (14.6)
Box: MF-RX/250 67 372 362
max.
(2.64) (14.6) (14.25)
Box: MF-R/600 64 372 362
max.
(2.52) (14.6) (14.25)
Consecutive missing places: MF-R, MF-RX, MF-R/90 3 max.
Consecutive missing places: MF-RX/250, MF-R/600 none
Empty places per reel: MF-R, MF-RX, MF-R/90 Not specifi ed
Empty places per reel: MF-RX/250, MF-R/600 0.1 %
Specifi cations are subject to change without notice.
Customers should verify actual device performance in their specifi c applications.
Taped Component Dimensions - Figure 1
DIMENSIONS: MM
(INCHES)
MF-R, MF-R/90, MF-R/600, MF-RX, MF-RX/72 & MF-RX/250 Series
Tape and Reel Specifi cations
Reel Dimensions - Figure 2
