Features
■ Axial/radial leaded
Applications
Any application that requires extra
protection at elevated ambient temperatures,
which the 100°C trip temperature provides.
■ Fully compatible with current
industry standards
■ Rechargeable battery pack protection
■ Cellular phones
■ Laptop computers
■ Weldable nickel terminals
■ Very low internal resistance
■ RoHS compliant*, lead free
■ Agency recognition:
LS
190
0144T
T
V Rheinland
MF-LS Series - PTC Resettable Fuses
Electrical Characteristics
1 Hour (R )
Post-Trip
Resistance
Tripped
Power
Dissipation
1
Initial
Resistance
Max. Time
To Trip
I
I
trip
hold
V max.
Model
I max.
Amps
Amperes
at 23 °C
Hold
Ohms
at 23 °C
Ohms
Amperes Seconds
Watts
at 23 °C
Volts
at 23 °C at 23 °C at 23 °C
Max.
Trip
1.5
1.5
2.5
3.8
3.8
3.8
4.2
4.2
5.2
6.3
6.8
Min.
Max.
0.200
0.200
0.130
0.068
0.068
0.068
0.057
0.057
0.042
0.031
0.027
Typ.
1.0
1.0
1.5
2.0
2.0
2.0
1.9
1.9
2.3
2.0
2.7
MF-LS070
MF-LS070S
MF-LS100S
MF-LS180
MF-LS180L
MF-LS180S
MF-LS190
MF-LS190RU
MF-LS260
MF-LS300
MF-LS340
15
15
24
24
24
24
24
15
24
24
24
100
100
100
100
100
100
100
100
100
100
100
0.7
0.7
1.0
1.8
1.8
1.8
1.9
1.9
2.6
3.0
3.4
0.100
0.100
0.070
0.040
0.040
0.040
0.030
0.030
0.025
0.015
0.016
0.340
0.340
0.260
0.120
0.120
0.120
0.100
0.100
0.076
0.055
0.050
3.5
3.5
5
5.0
5.0
7.0
2.9
2.9
2.9
3.0
3.0
5.0
4.0
5.0
9
9
9
10
10
13
15
17
Note: Slotted option available on all models.
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 .................................... 10 ꢀ typical resistance change
Humidity Aging....................................................+85 °C, 85 ꢀ R.H. 7 days .......................... 5 ꢀ typical resistance change
Vibration..............................................................MIL-STD-883C, ..........................................No change
Condition A
Test Procedures And Requirements For Model MF-LS 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
UL File Number ..................................................E 174545S
CSA File Number ................................................CA 110338
TÜV File Number ................................................R2057213
Thermal Derating Chart - I
/ I (Amps)
hold trip
Ambient Operating Temperature
23 °C 40 °C 50 °C
Model
-40 °C
-20 °C
0 °C
60 °C
70 °C
85 °C
MF-LS070
MF-LS070S
MF-LS100S
MF-LS180
MF-LS180L
MF-LS180S
MF-LS190
MF-LS190RU
MF-LS260
MF-LS300
MF-LS340
1.20 / 2.57 1.09 / 2.33 0.85 / 1.82 0.70 / 1.50 0.50 / 1.07 0.45 / 0.96 0.35 / 0.75 0.28 / 0.60 0.16 / 0.34
1.20 / 2.57 1.09 / 2.33 0.85 / 1.82 0.70 / 1.50 0.50 / 1.07 0.45 / 0.96 0.35 / 0.75 0.28 / 0.60 0.16 / 0.34
1.80 / 4.50 1.60 / 4.00 1.40 / 3.50 1.00 / 2.50 0.80 / 2.00 0.70 / 1.75 0.60 / 1.50 0.40 / 1.00 0.20 / 0.50
3.10 / 6.54 2.60 / 5.49 2.20 / 4.64 1.80 / 3.80 1.30 / 2.74 1.10 / 2.32 0.90 / 1.90 0.60 / 1.27 0.20 / 0.42
3.10 / 6.54 2.60 / 5.49 2.20 / 4.64 1.80 / 3.80 1.30 / 2.74 1.10 / 2.32 0.90 / 1.90 0.60 / 1.27 0.20 / 0.42
3.10 / 6.54 2.60 / 5.49 2.20 / 4.64 1.80 / 3.80 1.30 / 2.74 1.10 / 2.32 0.90 / 1.90 0.60 / 1.27 0.20 / 0.42
3.30 / 7.29 2.80 / 6.19 2.40 / 5.31 1.90 / 4.20 1.40 / 3.09 1.20 / 2.65 1.10 / 2.43 0.70 / 1.55 0.40 / 0.88
3.30 / 7.29 2.80 / 6.19 2.40 / 5.31 1.90 / 4.20 1.40 / 3.09 1.20 / 2.65 1.10 / 2.43 0.70 / 1.55 0.40 / 0.88
4.30 / 8.60 3.70 / 7.40 3.10 / 6.20 2.60 / 5.20 1.90 / 3.80 1.60 / 3.20 1.40 / 2.80 1.10 / 2.20 0.60 / 1.20
5.10 / 10.7 4.40 / 9.24 3.70 / 7.77 3.00 / 6.30 2.30 / 4.83 1.90 / 3.99 1.60 / 3.36 1.20 / 2.52 0.60 / 1.26
5.50 / 11.0 4.70 / 9.40 4.00 / 8.00 3.40 / 6.80 2.60 / 5.20 2.20 / 4.40 1.90 / 3.80 1.50 / 3.00 0.80 / 1.60
*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.