The slotted lead option is currently
available but not, recommended for
new designs.
Features
■ Axial leaded
■ Fully compatible with current industry
standards
■ Weldable nickel terminals
■ Very low internal resistance
■ Agency recognition:
Applications
S350
0144T
■ Rechargeable battery pack protection
■ Provides overcurrent protection with
125 °C trip temperature
■ RoHS compliant*
MF-S Series - PTC Resettable Fuses
Electrical Characteristics
Tripped
Power
1 Hour (R )
1
I
I
Initial Resistance
Post-Trip
Max. Time to Trip
hold
trip
Dissipation
Resistance
V max.
I max.
Amps
Model
Volts
Amperes
at 23 °C
Ohms
Ohms
Amperes Seconds
at 23 °C at 23 °C
Watts
at 23 °C
at 23 °C
at 23 °C
Hoꢂd
Trip
2.70
2.70
3.00
3.80
3.80
4.40
6.30
7.60
Min.
Max.
0.160
0.160
0.090
0.090
0.090
0.060
0.031
0.024
Max.
0.220
0.220
0.113
0.120
0.120
0.080
0.040
0.040
Tꢁp.
1.20
1.20
1.30
1.50
1.50
1.90
2.50
2.90
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
0.085
0.085
0.050
0.050
0.050
0.030
0.017
0.012
6
6
5.0
5.0
5.0
4.0
4.0
4.0
3.0
6.0
8
9
9
10
20
20
NOTE: Sꢂotted ꢂead option avaiꢂabꢂe on aꢂꢂ modeꢂs.
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 ꢀ tꢁpicaꢂ resistance change
Humiditꢁ Aging...................................................... +85 °C, 85ꢀ R.H. 7 daꢁs...................................... 5 ꢀ tꢁpicaꢂ 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
Visuaꢂ/Mech..................................................... Verifꢁ dimensions and materiaꢂs.......................Per MF phꢁsicaꢂ description
Resistance....................................................... In stiꢂꢂ air @ 23 °C.............................................Rmin ≤ R ≤ R1max
Time to Trip...................................................... At specified current, Vmax, 23 °C.....................T ≤ max. time to trip (seconds)
Hoꢂd Current.................................................... 30 min. at Ihoꢂd .................................................No trip
Trip Cꢁcꢂe Life.................................................. Vmax, Imax, 100 cꢁcꢂes....................................No arcing or burning
Trip Endurance................................................ Vmax, 48 hours.................................................No arcing or burning
UL Fiꢂe Number ............................................... E 174545S
CSA Fiꢂe Number............................................. CA 110338
TÜV Fiꢂe Number............................................. R2057213
Thermal Derating Chart - I
I
(Amps)
hold/ trip
Ambient Operating Temperature
23 ºC 40 ºC 50 ºC
Model
-40 ºC
-20 ºC
0 ºC
60 ºC
70 ºC
85 ºC
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 and RoHS Recast 2011/65/EU June 8, 2011.
Specifications 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 specific applications.