MF-R05590 Datasheet, PDF (1/4 Pages) Bourns Electronic Solutions – MF-R/90 Series - PTC Resettable Fuses

*RoHS ^COMPLIANT
1R202505S
Features
■ Radial leaded devices
■ Cured, flame 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
Electrical Characteristics
Model
V max. I max.
Volts Amps
Ihold
Itrip
Amperes
at 23 °C
Hold
Trip
MF-R055/90
90
10
0.55
1.1
MF-R055/90U
90
10
0.55
1.1
MF-R075/90
90
10
0.75
1.5
“U” suffix indicates product without insulation coating.
Initial
Resistance
Values
Ohms
at 23 °C
Min.
Max.
0.45
0.9
0.45
0.9
0.37
0.75
One Hour
Post-Trip
Resistance
Standard
Trip
Ohms
at 23 °C
Max.
2.0
2.0
1.65
Max. Time
to Trip
Nominal
Tripped
Power
Dissipation
Amperes Seconds
at 23 °C at 23 °C
1.6
60
1.6
28
2.0
60
Watts
at 23 °C
Typ.
2.0
2.0
2.5
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
Thermal Derating Chart - Ihold / Itrip (Amps)
Model
MF-R055/90
MF-R055/90U
MF-R075/90
-40 ºC
0.85 / 1.7
0.85 / 1.7
1.15 / 2.3
-20 ºC
0.75 / 1.5
0.75 / 1.5
1.0 / 2.0
0 ºC
0.65 / 1.3
0.65 / 1.3
0.9 / 1.8
Ambient Operating Temperature
23 ºC
40 ºC
50 ºC
0.55 / 1.1 0.45 / 0.9 0.4 / 0.8
0.55 / 1.1 0.45 / 0.9 0.4 / 0.8
0.75 / 1.5 0.61 / 1.22 0.55 / 1.1
60 ºC
0.35 / 0.7
0.35 / 0.7
0.48 / 0.96
70 ºC
0.3 / 0.6
0.3 / 0.6
0.41 / 0.82
85 ºC
0.22 / 0.44
0.22 / 0.44
0.30 / 0.6
*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.