FUSES / SICHERUNGEN PFMU
Resettable fuses
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11
Surface Mount
PTC-Fuses
Type PFMU
2,8 x 3,4 mm
fast tripping
Packaged per EIA 481-1
Agency recognition:
UL, CSA, TÜV
Typical Time to Trip at 23 ˚C
Fault current (A)
Time to trip (s)
Dimensions Solder pad layouts
Applications
•PC motherboards
•PC modems
•USB
•General electronics: Phones,
fax machines, televisions,
printers, video equipment,
PDA
Test Procedures And Requirements For Model PFMU Series
Test / Test Test Conditions / Bedingungen Accept/Reject Criteria
Visual/Mech. / visuell/mech. Verify dimensions and materials / Kontrolle Abmess./Mat. Per MF physical description
Resistance / Widerstand In still air @ 23 °C / bei ruhiger Luft 23 °C Rmin
≤ R ≤ Rmax
Time to Trip / Trip-Zeit At specified current, Vmax
23 °C / Bei entspr. Strom T ≤ max. time to trip / Tr(sec.)
Hold Current / Haltestrom 30 min. at Ihold / bei Haltestrom No trip
Trip Cycle Life / Trip-Zyklen Vmax, Imax, 100 cycles / Zyklen No arcing or burning
Trip Endurance / Zeit im Tripzustand Vmax, 48 hours / Stunden No arcing or burning
Environmental Characteristics
Operating/Storage Temperature / Einsatz/Lagertemp. -40 °C to +85 °C
Maximum Device Surface Temperature in Tripped State / 125 °C
Passive Aging / passive Alterung +85 °C, 1000 hours / Std. ± 5% typ. resist. change
Humidity Aging / Feuchtigkeitsalterung +85 °C, 85% R.H. 1000 hours / Std.± 10% typ. resist. change
Thermal Shock / Thermischer Schock +85 °C/–40 °C 20 times / Zyklen ± 10% typ. resist. change
Solvent Resistance / Lösungsmittel-Beständigkeit MIL-STD-202, Method 215 No change
Vibration MIL-STD-883C, Method 2007.1, No change
Condition A
Typical Part Marking
Layout may vary
Manufacturer’s
Trademark
Part identification
Date code week 1 of 2000 = 0A (year and week)
week 27 of 2000 = A0 (week and year)
50 75 100
101 10
100
10
1
0.01
0.001 0.1
0.1
110
PFMU.050.2
PFMU.010.2
PFMU.005.2
PFMU.110.2
PFMU.075.2
1.1 ± 0.1
(.043 ± .004)
1.1 ± 0.1
(.043 ± .004)
1.1 ± 0.1
(.043 ± .004)
2.6 ± 0.1
(.102 ± .004)
Min.
AC
B
D
1.7 ± 0.1
(.067 ± .004)
?
PFMU.035.2
PFMU.020.2
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12
Type / Typ Imax Vmax Ihold Itrip Initial 1 Hour (R1) Post- Max. Time Tripped Power
Resistance /
Reflow Resistance /
to trip at 23 °C/8A / Dissipation
Amperes at 23 °C / Ohms at 23 °C Amperes / Seconds / Watts at 23 °C /
AVHold Trip Rmin.
R1 max.
at / bei 23 °C at / bei 23 °C
PFMU.005.2 10 30 0.05 0.15 2.80 50.0 0.25 1.5 0.8
PFMU.010.2 10 30 0.10 0.30 0.80 15.0 0.5 0.6 0.8
PFMU.020.2 10 30 0.20 0.40 0.40 5.0 8.0 0.2 0.8
PFMU.035.2 40 6 0.35 0.75 0.20 1.30 8.0 0.2 1.0
PFMU.050.2 40 13.2 0.50 1.00 0.18 0.90 8.0 0.1 1.0
PFMU.075.2 40 6 0.75 1.50 0.07 0.45 8.0 0.1 1.2
PFMU.110.2 40 6 1.10 2.20 0.05 0.21 8.0 0.1 1.2
Electrical Characteristics / Elektrische Daten
Model / Modell
AB CD
min. max. min. max. min. max. min.
PFMU.005.2 3.00 3.43 2.35 2.80 0.38 0.62 0.30
(0.118) (0.135) (0.092) (0.110) (0.015) (0.025) (0.012)
PFMU.010.2 3.00 3.43 2.35 2.80 0.38 0.62 0.30
(0.118) (0.135) (0.092) (0.110) (0.015) (0.025) (0.012)
PFMU.020.2 3.00 3.43 2.35 2.80 0.38 0.62 0.30
(0.118) (0.135) (0.092) (0.110) (0.015) (0.025) (0.012)
PFMU.035.2 3.00 3.43 2.35 2.80 0.38 0.62 0.30
(0.118) (0.135) (0.092) (0.110) (0.015) (0.025) (0.012)
PFMU.050.2 3.00 3.43 2.35 2.80 0.38 0.62 0.30
(0.118) (0.135) (0.093) (0.110) (0.015) (0.024) (0.012)
PFMU.075.2 3.00 3.43 2.35 2.80 0.38 0.62 0.30
(0.118) (0.135) (0.092) (0.110) (0.015) (0.025) (0.012)
PFMU.110.2 3.00 3.43 2.35 2.80 0.38 0.62 0.30
(0.118) (0.135) (0.092) (0.110) (0.015) (0.025) (0.012)
Dimensions
Soldering Profile
How To Order
PF MU .xxx .x
PTC-Fuse
Style
MU = 1210 Surface Mount Component
Hold Current, Ihold
005-110 (0.05 A - 1.10 A)
Packaging
Packaged per EIA 481-1
2 = Tape and reel /
Note
•PFMU models can be wave soldered and reworked.
Thermal Derating Chart-Ihold (Amps)
Type / Typ
Ambient Operating Temperature
–40 ˚C –20 ˚C 0 ˚C 23 ˚C 40 ˚C 50 ˚C 60 ˚C 70 ˚C 85 ˚C
PFMU.005.2 0.08 0.07 0.06 0.05 0.04 0.04 0.03 0.03 0.02
PFMU.010.2 0.16 0.14 0.12 0.10 0.08 0.07 0.06 0.05 0.04
PFMU.020.2 0.32 0.28 0.24 0.20 0.16 0.14 0.12 0.10 0.06
PFMU.035.2 0.47 0.45 0.40 0.35 0.33 0.28 0.24 0.21 0.18
PFMU.050.2 0.76 0.67 0.58 0.50 0.43 0.40 0.36 0.32 0.28
PFMU.075.2 1.00 0.97 0.86 0.75 0.64 0.59 0.54 0.48 0.40
PFMU.110.2 1.60 1.42 1.26 1.10 0.94 0.86 0.80 0.70 0.58
FUSES / SICHERUNGEN PFMU
Resettable fuses
Packaging: 3000 pcs. per reel /
Maximum Package Body Temperature (220 °C)
Melting Temperature of Solder (183 °C)
2 Minutes or More
Preheat Flux Activation Reflow Cool
10° to 20 C
per Second Less than
120 °C per
Second
300
250
200
150
100
50
00 30 60 100 150 200 250
Temperature (° C)
Time (Second) (s)
Dimensions in mm/inches
