MF-R90 Datasheet, PDF (1/4 Pages) Bourns Electronic Solutions – PTC Resettable Fuses

*RoHS ^COMPLIANT
1R202505S
Features
■ Radial Leaded Devices
■ Cured, flame retardant epoxy polymer
insulating material meets UL 94V-0
requirements
■ RoHS compliant*
■ Lead free
■ Agency recognition:
T V Rheinland
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
Ihold
Itrip
Model
MF-R055/90
MF-R055/90U
MF-R075/90
V max.
Volts
90
90
90
I max.
Amps
10
10
10
Amps
at 23 °C
Hold
0.55
0.55
0.75
“U” suffix indicates product without insulation coating.
Amps
at 23 °C
Trip
1.1
1.1
1.5
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
Maximum
Time
To Trip
Amps
at 23 °C
1.6
1.6
2.0
Seconds
at 23 °C
60
28
60
Nominal
Tripped
Power
Dissipation
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 ........................................................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
TÜV File Number ................................................R2057213
Thermal Derating Chart - Ihold _/ Itrip (Amps)
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
Ambient Operating Temperature
23 ^°C
40 ^°C
50 ^°C
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 ^°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.