MF-VS Datasheet, PDF (1/3 Pages) Bourns Electronic Solutions – PTC Resettable Fuses

*RoHS ^COMPLIANT
20V18SS240
Features
■ Axial leaded
■ Fully compatible with current
industry standards
■ Weldable nickel terminals
■ Very low internal resistance
■ Low switching temperature
■ RoHS compliant*, lead free
Applications
■ Any application that requires protection
at low resistances
■ Rechargeable battery packs; designed for
NiMH and Li-Ion chemical characteristics
■ Cellular phones
■ Laptop computers
MF-VS Series - PTC Resettable Fuses
Electrical Characteristics
Model
V max.
Volts
MF-VS170
16
MF-VS210
16
MF-VS240
16
I max.
Amps
100
100
100
Ihold
Itrip
Amperes
At 23 °C
Hold
Trip
1.7
3.4
2.1
4.7
2.4
5.9
Initial
Resistance
Ohms
At 23 °C
Min. Max.
Typ.
0.030 0.052 0.040
0.018 0.030 0.022
0.014 0.026 0.020
1 Hour (R1)
Post-Trip
Resistance
Max. Time
To Trip
Ohms Amperes Seconds
At 23 °C At 23 °C At 23 °C
Max.
0.105
8.5
3.0
0.060 10.0
5.0
0.052 12.0
6.0
Tripped
Power
Dissipation
Watts
At 23 °C
Typ.
1.4
1.5
1.9
Environmental Characteristics
Operating/Storage Temperature ........................-40 °C to +85 °C
Maximum Device Surface Temperature
in Tripped State ................................................125 °C
Passive Aging......................................................+60 °C, 1000 hours ....................................±10 % typical resistance change
Humidity Aging....................................................+60 °C, 85 % R.H.1000 hours ....................±10 % typical resistance change
Thermal Shock ....................................................MIL-STD-202F, Method 107G ....................±5 % typical resistance change
+85 °C to -40 °C, 10 times
Vibration ..............................................................MIL-STD-883C, ..........................................No change
Condition A
Test Procedures And Requirements For Model MF-VS 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 - Ihold (Amps)
Model
MF-VS170
MF-VS210
MF-VS240
-40 °C
3.2
4.1
4.2
-20 °C
2.7
3.5
3.6
*Itrip is approximately two times Ihold.
0 °C
2.2
2.9
3.0
Ambient Operating Temperature
23 °C
1.7
2.1
2.4
40 °C
1.3
1.6
1.9
50 °C
1.1
1.3
1.5
60 °C
0.8
1.0
1.2
70 °C
0.6
0.7
0.8
85 °C
0.1
0.1
0.1
*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.