Specifications are subject to change without notice.
Customers should verify actual device performance in their specific applications.
Operating/Storage Temperature ........................-40 °C to +85 °C
Maximum Device Surface Temperature
Passive Aging......................................................+85 °C, 1000 hours ....................................±5 % typical resistance change
Humidity Aging....................................................+85 °C, 85 % R.H. 1000 hours....................±10 % typical resistance change
Thermal Shock ....................................................+85 °C to -40 °C, 20 times ..........................±10 % typical resistance change
Solvent Resistance ............................................MIL-STD-202, Method 215 ........................No change
Vibration ..............................................................MIL-STD-883C, Method 2007.1, ................No change
Test
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
Solderability ....................................MIL-STD-202F, Method 208F ........................................95 % min. coverage
UL File Number ..................................E174545
CSA File Number ................................CA110338
TÜV Certificate Number ......................R 02057213
Thermal Derating Chart - I hold (Amps)
Electrical Characteristics
in Tripped State ................................................125 °C
MF-USMD005
MF-USMD010
MF-USMD020
MF-USMD035
MF-USMD050
MF-USMD075
MF-USMD110
MF-USMD005
MF-USMD010
MF-USMD020
MF-USMD035
MF-USMD050
MF-USMD075
MF-USMD110
Model
Environmental Characteristics
Test Procedures And Requirements For Model MF-USMD Series
Model
-40 °C
0.08
0.16
0.32
0.47
0.76
1.00
1.60
V max.
Volts
30.0
30.0
30.0
13.2
6.0
6.0
6.0
http://www.ul.com/ Follow link to Certifications, then UL File No., enter E174545
http://directories.csa-international.org/ Under “Certification Record” and “File Number” enter 110338-0-000
http://www.tuvdotcom.com/ Follow link to “other certificates”, enter File No. 2057213
Test Conditions
-20 °C
0.07
0.14
0.28
0.45
0.67
0.97
1.42
I max.
Amps
10
10
10
40
40
40
40
Condition A
MF-USMD Series -
Features
Very small size 1210 footprint - 44 %
smaller design than MF-MSMD Series
Fast tripping resettable circuit protection
Surface mount packaging for automated
assembly
Agency recognition:
0 °C
0.06
0.12
0.24
0.40
0.58
0.86
1.26
I hold
Hold
0.05
0.10
0.20
0.35
0.50
0.75
1.10
Amperes
at 23 °C
Ambient Operating Temperature
23 °C
0.05
0.10
0.20
0.35
0.50
0.75
1.10
I trip
0.15
0.30
0.40
0.75
1.00
1.50
2.20
Trip
40 °C
0.04
0.08
0.16
0.33
0.43
0.64
0.94
PTC Resettable Fuses
R Min.
2.80
0.80
0.40
0.20
0.18
0.07
0.05
Resistance
at 23 °C
Ohms
Accept/Reject Criteria
50 °C
0.04
0.07
0.14
0.28
0.40
0.59
0.86
R 1Max.
0.450
0.210
50.0
15.0
5.00
1.30
0.90
Series
is preferred.
The MF-USMD Series is currently
60 °C
Amperes
available, although not recommended
at 23 °C
0.03
0.06
0.12
0.24
0.36
0.54
0.80
for new designs. The
0.25
0.5
8.0
8.0
8.0
8.0
5.0
Max. Time
To Trip
Seconds
at 23 °C
70 °C
0.03
0.05
0.10
0.21
0.32
0.48
0.70
0.02
1.5
0.6
0.2
0.1
0.1
1.0
MF-USMF
Dissipation
at 23 °C
Tripped
85 °C
Watts
Power
0.02
0.04
0.06
0.18
0.28
0.40
0.58
Typ.
0.8
0.8
0.8
1.0
1.0
1.2
1.2