Features
Applications
nꢀ Axialꢀleaded
Anyꢀapplicationꢀthatꢀrequiresꢀprotectionꢀatꢀlowꢀ
resistances:
nꢀ Weldableꢀnickelꢀterminals
nꢀ Veryꢀlowꢀinternalꢀresistance
nꢀ Operatingꢀcurrentsꢀtoꢀ9.0ꢀamps
nꢀ RoHSꢀcompliant*
nꢀ Agencyꢀrecognition:
ꢀ
nꢀ Rechargeableꢀbatteryꢀpackꢀprotection
nꢀ Cellularꢀphones
nꢀ Laptopꢀcomputers
ꢀ ꢀꢀ3006ꢀ-ꢀTrimpot®ꢀTrimmingꢀPotentiometer
ꢀ ꢀꢀMF-LRꢀSeriesꢀ-ꢀPTCꢀResettableꢀFuses
Electrical Characteristics
1 Hour (R )
1
Tripped Power
Dissipation
Initial
Resistance
Max. Time
to Trip
Post-Trip
I
I
trip
hold
Resistance
V max.
Volts
I max.
Amps
Model
Amperes
at 23 °C
Ohms
at 23 °C
Ohms
at 23 °C
Amperes Seconds
Watts
at 23 °C
at 23 °C
at 23 °C
Hold
Trip
3.90
5.80
8.30
Min.
Max.
0.072
0.042
0.026
0.020
0.019
0.019
0.014
0.012
0.012
0.010
Max.
0.102
0.083
0.037
0.028
0.022
0.022
0.019
0.015
0.015
0.014
Typ.
1.2
1.3
2.5
1.4
1.4
1.4
2.8
3.0
3.0
3.0
MF-LR190
MF-LR260
MF-LR380
MF-LR450
MF-LR550
MF-LR550/20
MF-LR600
MF-LR730
MF-LR730/20
MF-LR900/20
15
15
15
16
10
20
10
10
20
20
100
100
100
100
100
100
100
100
100
100
1.90
2.60
3.80
4.50
5.50
5.50
6.00
7.30
7.30
9.00
0.039
0.020
0.013
0.011
0.009
0.009
0.007
0.006
0.006
0.006
9.5
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
13.0
19.0
22.5
27.5
27.5
30.0
30.0
30.0
45.0
8.90
10.50
10.50
11.70
14.10
14.10
16.70
Environmental Characteristics
Operating/Storage Temperature........................... -40 °C to +85 °C
Passive Aging....................................................... +70 °C, 1000 hours............................................... ±10 % typical resistance change
Humidity Aging...................................................... +85 °C, 85% R.H. 7 days...................................... ±10 % typical resistance change
Vibration ............................................................... MIL-STD-883C,..................................................... No change
Condition A
Test Procedures And Requirements For Model MF-LR 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 ≤ R1max
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
cUL File Number................................................... E174545
TÜV File Number.................................................. R2057213
Thermal Derating Chart - I
(Amps)
hold
Ambient Operating Temperature
Model
-40 ºC
-20 ºC
0 ºC
2.3
3.1
4.4
5.3
6.2
6.2
7.1
8.6
8.6
10.0
23 ºC
1.9
2.6
3.8
4.5
5.5
5.5
6.0
7.3
7.3
9.0
40 ºC
1.6
2.2
3.3
3.9
4.7
4.7
5.2
7.4
7.4
7.5
50 ºC
1.5
2.0
3.0
3.6
4.3
4.3
4.7
6.8
6.8
6.8
60 ºC
1.4
1.9
2.8
3.3
4.0
4.0
4.4
6.2
6.2
6.2
70 ºC
1.2
1.7
2.5
2.9
3.6
3.6
3.9
5.5
5.5
5.5
85 ºC
1.0
1.4
2.1
2.5
3.0
3.0
3.3
4.5
4.5
4.5
MF-LR190
MF-LR260
MF-LR380
MF-LR450
MF-LR550
MF-LR550/20
MF-LR600
MF-LR730
MF-LR730/20
MF-LR900/20
2.8
3.8
5.5
6.5
8.0
8.0
8.7
10.5
10.5
12.7
2.5
3.4
4.9
5.8
7.1
7.1
7.8
9.5
9.5
11.4
I
is approximately two times I .
hold
trip
*RoHSꢀDirectiveꢀ2002/95/ECꢀJan.ꢀ27,ꢀ2003ꢀincludingꢀannexꢀandꢀRoHSꢀRecastꢀ2011/65/EUꢀJuneꢀ8,ꢀ2011.ꢀ
Specificationsꢀareꢀsubjectꢀtoꢀchangeꢀwithoutꢀnotice.
Theꢀdeviceꢀcharacteristicsꢀandꢀparametersꢀinꢀthisꢀdataꢀsheetꢀcanꢀandꢀdoꢀvaryꢀinꢀdifferentꢀapplicationsꢀandꢀactualꢀdeviceꢀperformanceꢀmayꢀvaryꢀoverꢀtime.
Usersꢀshouldꢀverifyꢀactualꢀdeviceꢀperformanceꢀinꢀtheirꢀspecificꢀapplications.