Features
■ RoHS compliant*
■ Lead free
■ Axial leaded
■ Fully compatible with current
industry standards
Applications
■ Rechargeable Battery Pack Protection
■ Weldable nickel terminals
■ Very low internal resistance
S350
0144T
■ Provides overcurrent protection with
125 °C trip temperature
T
V Rheinland
■ Agency recognition:
MF-S 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
Typ.
Volts
at 23 °C at 23 °C at 23 °C
Max.
Trip
Min.
Max.
MF-S120
MF-S120S
MF-S150
MF-S175
MF-S175S
MF-S200
MF-S350
MF-S420
15
15
15
15
15
30
30
30
100
100
100
100
100
100
100
100
1.20
1.20
1.50
1.75
1.75
2.00
3.50
4.20
2.70
2.70
3.00
3.80
3.80
4.40
6.30
7.60
0.085
0.085
0.050
0.050
0.050
0.030
0.017
0.012
0.160
0.160
0.090
0.090
0.090
0.060
0.031
0.024
0.220
0.220
0.110
0.120
0.120
0.080
0.040
0.040
6
6
5.0
5.0
5.0
4.0
4.0
4.0
3.0
6.0
1.20
1.20
1.30
1.50
1.50
1.90
2.50
2.90
8
9
9
10
20
20
NOTE: Slotted lead 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 .................................... 5 ꢀ typical resistance change
Humidity Aging....................................................+85 °C, 85ꢀ R.H. 7 days............................ 5 ꢀ typical resistance change
Vibration..............................................................MIL-STD-883C, Method 2007.1, ................No change
Condition A
Test Procedures And Requirements For Model MF-S 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-S120
MF-S120S
MF-S150
MF-S175
MF-S175S
MF-S200
MF-S350
MF-S420
1.90 / 4.28 1.70 / 3.83 1.50 / 3.38 1.20 / 2.70 1.00 / 2.25 0.90 / 2.03 0.80 / 1.80 0.70 / 1.58 0.50 / 1.13
1.90 / 4.28 1.70 / 3.83 1.50 / 3.38 1.20 / 2.70 1.00 / 2.25 0.90 / 2.03 0.80 / 1.80 0.70 / 1.58 0.50 / 1.13
2.20 / 4.40 2.00 / 4.00 1.80 / 3.60 1.50 / 3.00 1.30 / 2.60 1.10 / 2.20 1.00 / 2.00 0.90 / 1.80 0.70 / 1.40
2.50 / 5.59 2.30 / 5.14 2.00 / 4.47 1.70 / 3.80 1.50 / 3.35 1.30 / 2.91 1.20 / 2.68 1.10 / 2.46 0.90 / 2.01
2.50 / 5.59 2.30 / 5.14 2.00 / 4.47 1.70 / 3.80 1.50 / 3.35 1.30 / 2.91 1.20 / 2.68 1.10 / 2.46 0.90 / 2.01
3.20 / 7.04 2.80 / 6.16 2.50 / 5.50 2.00 / 4.40 1.70 / 3.74 1.60 / 3.52 1.40 / 3.08 1.20 / 2.64 0.90 / 1.98
5.40 / 9.72 4.80 / 8.64 4.30 / 7.74 3.50 / 6.30 3.00 / 5.40 2.80 / 5.04 2.50 / 4.50 2.20 / 3.96 1.70 / 3.06
6.40 / 11.5 5.70 / 10.3 5.10 / 9.23 4.20 / 7.60 3.60 / 6.51 3.30 / 5.97 3.00 / 5.43 2.60 / 4.70 2.10 / 3.80
*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.
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