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Features

Applications

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:
(R)
(R)
TUV Rheinland
Product Safety
PC motherboards PC modems USB Analog and digital line cards IEEE 1394 General electronics: Phones, fax machines, televisions, printers, video equipment
MF-USMD Series - PTC Resettable Fuses
Electrical Characteristics
Tripped Power Dissipation
Ihold Model V max. Volts I max. Amps
Itrip
Resistance Ohms at 23 C RMin. R1Max.
Max. Time To Trip Amperes at 23 C Seconds at 23 C
Amperes at 23 C Hold Trip
Watts at 23 C Typ.
MF-USMD005 MF-USMD010 MF-USMD020 MF-USMD035 MF-USMD050 MF-USMD075 MF-USMD110
30.0 30.0 30.0 6.0 13.2 6.0 6.0
10 10 10 40 40 40 40
0.05 0.10 0.20 0.35 0.50 0.75 1.10
0.15 0.30 0.40 0.75 1.00 1.50 2.20
2.80 0.80 0.40 0.20 0.18 0.07 0.05
50.0 15.0 5.00 1.30 0.90 0.450 0.210
0.25 0.5 8.0 8.0 8.0 8.0 5.0
1.5 0.6 0.02 0.2 0.1 0.1 1.0
0.8 0.8 0.8 1.0 1.0 1.2 1.2
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. 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 Condition A Test Procedures And Requirements For Model MF-USMD 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 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 TUV Certificate Number ......................R 02057213 http://www.tuvdotcom.com/ Follow link to "other certificates", enter File No. 2057213
Thermal Derating Chart - Ihold (Amps)
Ambient Operating Temperature Model MF-USMD005 MF-USMD010 MF-USMD020 MF-USMD035 MF-USMD050 MF-USMD075 MF-USMD110 -40 C 0.08 0.16 0.32 0.47 0.76 1.00 1.60 -20 C 0.07 0.14 0.28 0.45 0.67 0.97 1.42 0 C 0.06 0.12 0.24 0.40 0.58 0.86 1.26 23 C 0.05 0.10 0.20 0.35 0.50 0.75 1.10 40 C 0.04 0.08 0.16 0.33 0.43 0.64 0.94 50 C 0.04 0.07 0.14 0.28 0.40 0.59 0.86 60 C 0.03 0.06 0.12 0.24 0.36 0.54 0.80 70 C 0.03 0.05 0.10 0.21 0.32 0.48 0.70 85C 0.02 0.04 0.06 0.18 0.28 0.40 0.58
Specifications are subject to change without notice.
Additional Features
Patents pending
MF-USMD Series - PTC Resettable Fuses
Product Dimensions
Model MF-USMD005 MF-USMD010 MF-USMD020 MF-USMD035 MF-USMD050 MF-USMD075 MF-USMD110
Packaging: 3000 pcs. per reel.
A Min. 3.00 (0.118) 3.00 (0.118) 3.00 (0.118) 3.00 (0.118) 3.00 (0.118) 3.00 (0.118) 3.00 (0.118) Max. 3.43 (0.135) 3.43 (0.135) 3.43 (0.135) 3.43 (0.135) 3.43 (0.135) 3.43 (0.135) 3.43 (0.135) Min. 2.35 (0.093) 2.35 (0.093) 2.35 (0.093) 2.35 (0.093) 2.35 (0.093) 2.35 (0.093) 2.35 (0.093)
B Max. 2.80 (0.110) 2.80 (0.110) 2.80 (0.110) 2.80 (0.110) 2.80 (0.110) 2.80 (0.110) 2.80 (0.110) Min. 0.50 (0.020) 0.50 (0.020) 0.50 (0.020) 0.38 (0.015) 0.38 (0.015) 0.38 (0.015) 0.30 (0.012)
C Max. 0.85 (0.033) 0.85 (0.033) 0.85 (0.033) 0.62 (0.025) 0.62 (0.024) 0.62 (0.025) 0.48 (0.019)
D Min. 0.30 (0.012) 0.30 (0.012) 0.30 (0.012) 0.30 (0.012) 0.30 (0.012) 0.30 (0.012) 0.30 (0.012)
UNIT = MM (INCHES)
Typical Part Marking
Top and Bottom View A Side View C Recommended Pad Layout 1.1 0.1 (.043 .004) 1.1 0.1 (.043 .004) 2.6 0.1 (.102 .004) 1.70 0.1 (.067 .004)
Represents total content. Layout may vary.
PART IDENTIFICATION YEAR CODE 2001 = 1
B
MANUFACTURER'S TRADEMARK
051
Z
BIWEEKLY DATE CODE WEEK 51 & 52 = Z
D
Terminal material: solder-plated copper Termination pad solderability: Meets EIA Specification RS-186-9E, ANSI/J-STD-002 Category 3.
Solder Reflow Recommendations
300 250 200 150 100 50 0 160-220 10-20 120
Preheating
Soldering
Cooling
Time (seconds) Note: * MF-USMD models can be wave soldered and reworked. * If reflow temperatures exceed the recommended profile, devices may not meet the performance requirements.
Temperature (C)
Specifications are subject to change without notice.
MF-USMD Series - PTC Resettable Fuses
Typical Time to Trip at 23 C
MF -US MD 005 MF -US MD 010 MF -US MD 020 MF -US MD 035 MF -US MD 050 MF -US MD 075 MF -US MD 110
How to Order
MF - USMD 005 - 2
Multifuse(R) Product Designator Series USMD = 1210 Surface Mount Component Hold Current, Ihold 005-110 (0.05 Amps - 1.10 Amps)
100
Packaging Packaged per EIA 481-1 -2 = Tape and Reel
10
Time to trip (Seconds)
1
0.1
0.01
0.001 0.1 1 10
Fault Current (Amps)
MF-USMD SERIES, REV. M, 04/03 Specifications are subject to change without notice.
MF-MSMD, MF-USMD & MF-ESMD Series Tape and Reel Specs
MF-MSMD Series per EIA-481-1
12.0 0.30 (0.472 0.012) 4.0 0.10 (0.157 0.004) 8.0 0.10 (0.315 0.004) 2.0 0.05 (0.079 0.002) 3.66 0.15 (0.144 0.006) 4.98 0.10 (0.196 0.004) 5.9 (0.232) 1.5 + 0.10/-0.00 (0.059 + 0.004/-0) 5.5 0.05 (0.217 0.002) 1.75 0.10 (0.069 0.004) 10.25 (0.404) 0.6 (0.024) 0.1 (0.004) 0.95 0.10 (0.037 0.004) 390 (15.35) 160 (6.30)
Tape Dimensions W P0 P1 P2 A0 B0 B1 max. D0 F E1 E2 min. T max. T1 max. K0 Leader min. Trailer min. Reel Dimensions A max. N min. W1 W2 max.
MF-USMD Series per EIA 481-1
8.0 0.30 (0.315 0.012) 4.0 0.10 (0.157 0.004) 4.0 0.10 (0.157 0.004) 2.0 0.05 (0.079 0.002) MF-USMD005,010,020: MF-USMD035,050,075,110: 2.76 0.10 2.93 0.15 (0.109 0.004) (0.115 0.006) MF-USMD005,010,020: 3.5 0.1 (0.138 0.004) MF-USMD035,050,075,110: 3.56 0.1 (0.140 0.004)
MF-ESMD Series per EIA 481-2
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) 20.1 (0.791) 1.5 + 0.1/-0.0 (0.059 + 0.004/-0) 11.5 0.10 (0.453 0.004) 1.75 0.10 (0.069 0.004) 22.25 (0.876) 0.6 (0.024) 0.1 (0.004) 0.85 0.1 (0.033 0.004) 390 (15.35) 160 (6.30)
4.35 (0.171) 1.50 + 0.1/-0.0 (0.059 + 0.004/-0) 3.5 0.05 (0.138 0.002) 1.75 0.10 (0.069 0.004) 6.25 (0.246) 0.6 (0.024) 0.1 (0.004) MF-USMD005,010,020: MF-USMD035,050,075,110: 0.75 0.10 1.07 0.10 (0.030 0.004) (0.042 0.004) 390 (15.35) 160 (6.30)
185 (7.28) 50 (1.97) 12.4 + 2.0/-0.0 (0.488 + 0.079/-0.0) 18.4 (0.724)
185 (7.28) 50 (1.97) 8.4 + 1.5/-0.0 (0.331 + 0.059/-0) 14.4 (0.567)
360 (14.17) 60 (2.36) 24.4 + 2.0/ -0.0 (0.961 + 0.079/-0) 30.4 (1.20) MM (INCHES)
P0 T D0 P2 E1
UNIT =
W2(MEASURED AT HUB)
COVER TAPE F B1 B0 K0 T1 P1 A0 W1(MEASURED AT HUB) E2 W A N(HUB DIA.)
Specifications are subject to change without notice.

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