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Features
■ Axial leaded
■ Fully compatible with current industry
standards
Applications
■ Rechargeable battery pack protection
■ Provides overcurrent protection with
125 °C trip temperature
0 4 350
S
1 4 T
■
■
■
■
Weldable nickel terminals
Very low internal resistance
Agency recognition:
RoHS compliant*
MF-S Series - PTC Resettable Fuses
Electrical Characteristics
Model
V max.
Volts
I max.
Amps
Ihold Itrip
Amperes
at 23 °C
Initial Resistance
Ohms
at 23 °C
1 Hour (R1)
Post-Trip
Resistance
Ohms
at 23 °C
Max. Time to Trip
Amperes Seconds
at 23 °C
at 23 °C
Tripped
Power
Dissipation
Watts
at 23 °C
Hold Trip
Min. Max.
Max.
Typ.
MF-S120
MF-S150
MF-S175
MF-S200
MF-S350
MF-S420
15
15
15
30
30
30
100
100
100
100
100
100
1.20 2.70
1.50 3.00
1.75 3.80
2.00 4.40
3.50 6.30
4.20 7.60
0.085 0.160
0.050 0.090
0.050 0.090
0.030 0.060
0.017 0.031
0.012 0.024
0.220
0.113
0.120
0.080
0.040
0.040
6
8
9
10
20
20
5.0
5.0
4.0
4.0
3.0
6.0
1.20
1.30
1.50
1.90
2.50
2.90
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. 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 speci?ed 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-S120
MF-S120S
MF-S150
MF-S175
MF-S175S
MF-S200
MF-S350
MF-S420
-40 oC
1.90 / 4.28
1.90 / 4.28
2.20 / 4.40
2.50 / 5.59
2.50 / 5.59
3.20 / 7.04
5.40 / 9.72
6.40 / 11.5
-20 oC
1.70 / 3.83
1.70 / 3.83
2.00 / 4.00
2.30 / 5.14
2.30 / 5.14
2.80 / 6.16
4.80 / 8.64
5.70 / 10.3
0 oC
1.50 / 3.38
1.50 / 3.38
1.80 / 3.60
2.00 / 4.47
2.00 / 4.47
2.50 / 5.50
4.30 / 7.74
5.10 / 9.23
Ambient Operating Temperature
23 oC 40 oC 50 oC
1.20 / 2.70 1.00 / 2.25 0.90 / 2.03
1.20 / 2.70 1.00 / 2.25 0.90 / 2.03
1.50 / 3.00 1.30 / 2.60 1.10 / 2.20
1.70 / 3.80 1.50 / 3.35 1.30 / 2.91
1.70 / 3.80 1.50 / 3.35 1.30 / 2.91
2.00 / 4.40 1.70 / 3.74 1.60 / 3.52
3.50 / 6.30 3.00 / 5.40 2.80 / 5.04
4.20 / 7.60 3.60 / 6.51 3.30 / 5.97
60 oC
0.80 / 1.80
0.80 / 1.80
1.00 / 2.00
1.20 / 2.68
1.20 / 2.68
1.40 / 3.08
2.50 / 4.50
3.00 / 5.43
70 oC
0.70 / 1.58
0.70 / 1.58
0.90 / 1.80
1.10 / 2.46
1.10 / 2.46
1.20 / 2.64
2.20 / 3.96
2.60 / 4.70
85 oC
0.50 / 1.13
0.50 / 1.13
0.70 / 1.40
0.90 / 2.01
0.90 / 2.01
0.90 / 1.98
1.70 / 3.06
2.10 / 3.80
*RoHS Directive 2002/95/EC Jan. 27, 2003 including annex and RoHS Recast 2011/65/EU June 8, 2011.
Speci?cations 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 speci?c applications.
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