Specifications are subject to change without notice.
MF-ESMD Series - PTC Resettable Fuses
Electrical Characteristics
Features
■Fast tripping resettable circuit protection
■Surface mount packaging for automated
assembly
■Very low internal resistance
■Patents pending
■100 °C trip temperature
■Agency recognition:
Applications
■Battery cell protection
Ihold Itrip Max. Time
Resistance To Trip
Model Amperes Ohms Amperes Seconds Watts
V max. I max.
at 23 °C at 23 °C at 23 °C at 23 °C at 23 °C
Volts Amps
Hold Trip Min. R1Max. Typ.
MF-ESMD190 16 100 1.9 3.8 0.010 0.08 10 2.0 1.5
Tripped
Power
Dissipation
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. 1000 hours ....................±5 % 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
Condition A
Environmental Characteristics
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
Solderability ....................................MIL-STD-202F, Method 208F..........................................95 % min. coverage
UL File Number ..................................E174545
http://www.ul.com/ Follow link to Certifications, then UL File No., enter E174545
CSA File Number................................CA110338
http://directories.csa-international.org/ Under “Certification Record” and “File Number” enter 110338-0-000
TÜV Certificate Number......................R 02057213
http://www.tuvdotcom.com/ Follow link to “other certificates”, enter File No. 2057213
Test Procedures And Requirements For Model MF-ESMD Series
Thermal Derating Chart - Ihold (Amps)
Ambient Operating Temperature
Model -40 ˚C -20 ˚C 0 ˚C 23 ˚C 40 ˚C 50 ˚C 60 ˚C 70 ˚C 85 ˚C
MF-ESMD190 3.04 2.7 2.2 1.9 1.44 1.23 1.00 0.78 0.49
OBSOLETE
Specifications are subject to change without notice.
MF-ESMD, REV. J, 11/02
MF-ESMD Series - PTC Resettable Fuses
How to Order
MF - ESMD 190 - 2
Multifuse®Product
Designator
Series
ESMD = 11.5mm Surface Mount Component
Hold Current, Ihold
190 (1.9 Amps)
Packaging
Packaged per EIA 481-2
-2 = Tape and Reel
Typical Part Marking
Represents total content. Layout may vary.
190
0A
MANUFACTURER'S
TRADEMARK
PART
IDENTIFICATION
DATE CODE -
WEEK 1 OF 2000 = 0A
(YEAR & WEEK)
WEEK 27 OF 2000 = A0
(WEEK & YEAR)
A
B
C
Top and Bottom View Side View
D
Product Dimensions
Packaging: 1500 pcs. per reel.
ABCD
Model Min. Max. Min. Max. Min. Max. Min.
MF-ESMD190 11.25 11.61 4.83 5.33 0.33 0.63 0.51
(0.443) (0.457) (0.190) (0.210) (0.013) (0.025) (0.020)
160–220
300
250
200
150
100
50
0
10–20
Temperature (°C)
120
Preheating Soldering Cooling
Time (seconds)
Solder Reflow Recommendations
Recommended Pad Layout
1.45 ± 0.10
(0.057 ± 0.004)
4.75 ± 0.10
(0.187 ± 0.004)
9.57 ± 0.10
(0.377 ± 0.004)
Note:
•MF-ESMD models
can be wave soldered
and reworked.
•If reflow temperatures
exceed the recom-
mended profile,
devices may not meet
the performance
requirements.
MM
(INCHES)
UNIT =
0.01
0.001 0.1 110100
0.1
1
10
100
Fault Current (Amps)
Time to Trip (Seconds)
MF-ESMD190
Typical Time to Trip at 23 °C
OBSOLETE
MF-MSMD Series MF-USMD Series MF-ESMD Series
Tape Dimensions per EIA-481-1 per EIA 481-1 per EIA 481-2
W
P0
P1
P2
A0
B0
B1max.
D0
F
E1
E2min.
T max.
T1max.
K0
Leader min.
Trailer min.
Reel Dimensions
A max.
N min.
W1
W2 max.
Specifications are subject to change without notice.
MF-MSMD, MF-USMD & MF-ESMD Series Tape and Reel Specs
B1
N(HUB DIA.)
(MEASURED
AT HUB)
A
T
COVER
TAPE
K0
T1A0
W2
(MEASURED
AT HUB)
W1
P1
B0
F
D0P2P0
E2
E1
W
UNIT = MM
(INCHES)
12.0 ± 0.30
(0.472 ± 0.012) 8.0 ± 0.30
(0.315 ± 0.012)
4.0 ± 0.10
(0.157 ± 0.004) 4.0 ± 0.10
(0.157 ± 0.004)
8.0 ± 0.10
(0.315 ± 0.004) 4.0 ± 0.10
(0.157 ± 0.004)
2.0 ± 0.05
(0.079 ± 0.002) 2.0 ± 0.05
(0.079 ± 0.002)
3.66 ± 0.15
(0.144 ± 0.006) 2.76 ± 0.10
(0.109 ± 0.004)
4.98 ± 0.10
(0.196 ± 0.004)
5.5 ± 0.05
(0.217 ± 0.002) 3.5 ± 0.05
(0.138 ± 0.002)
1.75 ± 0.10
(0.069 ± 0.004) 1.75 ± 0.10
(0.069 ± 0.004)
0.95 ± 0.10
(0.037 ± 0.004)
1.5 + 0.10/-0.00
(0.059 + 0.004/-0) 1.50 + 0.1/-0.0
(0.059 + 0.004/-0)
12.4 + 2.0/-0.0
(0.488 + 0.079/-0.0) 8.4 + 1.5/-0.0
(0.331 + 0.059/-0)
5.9
(0.232) 4.35
(0.171)
10.25
(0.404) 6.25
(0.246)
0.6
(0.024) 0.6
(0.024)
0.1
(0.004) 0.1
(0.004)
390
(15.35) 390
(15.35)
160
(6.30) 160
(6.30)
185
(7.28) 185
(7.28)
50
(1.97) 50
(1.97)
18.4
(0.724) 14.4
(0.567)
24.0 ± 0.3
(0.945 ± 0.012)
4.0 ± 0.1
(0.157 ± 0.004)
8.0 ± 0.1
(0.315 ± 0.004)
2.0 ± 0.1
(0.079 ± 0.004)
5.65 ± 0.1
(0.222 ± 0.004)
11.86 ± 0.1
(0.467 ± 0.004)
11.5 ± 0.10
(0.453 ± 0.004)
1.75 ± 0.10
(0.069 ± 0.004)
0.85 ± 0.1
(0.033 ± 0.004)
1.5 + 0.1/-0.0
(0.059 + 0.004/-0)
24.4 + 2.0/ -0.0
(0.961 + 0.079/-0)
20.1
(0.791)
22.25
(0.876)
0.6
(0.024)
0.1
(0.004)
390
(15.35)
160
(6.30)
360
(14.17)
60
(2.36)
30.4
(1.20)
MF-USMD005,010,020: 2.93 ± 0.15
(0.115 ± 0.006)
MF-USMD035,050,075,110:
3.5 ± 0.1
(0.138 ± 0.004)
MF-USMD005,010,020: 3.56 ± 0.1
(0.140 ± 0.004)
MF-USMD035,050,075,110:
1.07 ± 0.10
(0.042 ± 0.004)
MF-USMD005,010,020: 0.75 ± 0.10
(0.030 ± 0.004)
MF-USMD035,050,075,110:
OBSOLETE
