Features
Applications
■ Radial leaded devices
Almost anywhere there is a load to be
protected with a voltage supply of up to
90 V, including:
■ Cured, flame retardant epoxy polymer
insulating material meets UL 94V-0
requirements
R
0
5
5
1220S
■ Broadband cable power passing taps
■ Set-top boxes
■ RoHS compliant*
■ Agency recognition:
MF-R/90 Series - PTC Resettable Fuses
Electrical Characteristics
One Hour
Nominal
Tripped
Initial
Resistance
Values
Post-Trip
Resistance
Standard
Trip
Max. Time
to Trip
I
I
trip
hold
Power
Dissipation
V max.
Volts
I max.
Model
Amps
Amperes
at 23 °C
Ohms
Ohms
Amperes Seconds
Watts
at 23 °C
at 23 °C
at 23 °C
at 23 °C
at 23 °C
Hoꢂd
Trip
Min.
Max.
Max.
Tꢁp.
MF-R055/90
MF-R055/90U
MF-R075/90
90
90
90
10
10
10
0.55
0.55
0.75
1.1
1.1
1.5
0.45
0.45
0.37
0.9
2.0
1.6
1.6
2.0
60
28
60
2.0
2.0
2.5
0.9
2.0
0.75
1.65
“U” suffix indicates product without insuꢂation 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 ꢀ tꢁpicaꢂ resistance change
Humiditꢁ Aging................................................. +85 °C, 85 ꢀ R.H. 1000 hours ......................... 5 ꢀ tꢁpicaꢂ resistance change
Thermaꢂ Shock ................................................ +125 °C to -55 °C, 10 times.............................. 10 ꢀ tꢁpicaꢂ resistance change
Soꢂvent 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
Visuaꢂ/Mech..................................................... Verifꢁ dimensions and materiaꢂs.......................Per MF phꢁsicaꢂ description
Resistance....................................................... In stiꢂꢂ air @ 23 °C.............................................Rmin ≤ R ≤ Rmax
Time to Trip...................................................... 5 times Ihoꢂd, Vmax, 23 °C...............................T ≤ max. time to trip (seconds)
Hoꢂd Current.................................................... 30 min. at Ihoꢂd .................................................No trip
Trip Cꢁcꢂe Life.................................................. Vmax, Imax, 100 cꢁcꢂes....................................No arcing or burning
Trip Endurance................................................ Vmax, 48 hours.................................................No arcing or burning
UL Fiꢂe Number ............................................... E 174545S
CSA Fiꢂe Number............................................. CA 110338
TÜV Fiꢂe Number............................................. R2057213
Thermal Derating Chart - I
/ I
(Amps)
hold trip
Ambient Operating Temperature
Model
-40 ºC
-20 ºC
0 ºC
23 ºC
40 ºC
50 ºC
60 ºC
70 ºC
85 ºC
MF-R055/90
MF-R055/90U
MF-R075/90
0.85 / 1.7
0.85 / 1.7
1.15 / 2.3
0.75 / 1.5
0.75 / 1.5
1.0 / 2.0
0.65 / 1.3
0.65 / 1.3
0.9 / 1.8
0.55 / 1.1
0.55 / 1.1
0.75 / 1.5
0.45 / 0.9
0.45 / 0.9
0.4 / 0.8
0.4 / 0.8
0.35 / 0.7
0.35 / 0.7
0.3 / 0.6
0.3 / 0.6
0.22 / 0.44
0.22 / 0.44
0.30 / 0.6
0.61 / 1.22 0.55 / 1.1 0.48 / 0.96 0.41 / 0.82
*RoHS Directive 2002/95/EC Jan. 27, 2003 including annex and RoHS Recast 2011/65/EU June 8, 2011.
Specifications are subject to change without notice.
The device characteristics and parameters in this data sheet can and do vary in different applications and actual device performance may vary over time.
Users should verify actual device performance in their specific applications.
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