Features
NT
M
PL
Applications
■
■
■
■
■
■
■
■
■
■
■
Compact design to save board space -
0805 footprint
Small size results in very fast time to
react to fault events
Symmetrical design
Low profile
RoHS compliant*
Agency recognition:
USB port protection - On the Go and 2.0
PC motherboards - Plug and Play
protection
Mobile phones - Battery and port
protection
PDAs / digital cameras
Game console port protection
*R
oH
S
CO
IA
MF-PSMF 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-PSMF050
MF-PSMF075
MF-PSMF110
6
6
6
40
40
40
0.50
0.75
1.10
1.00
1.50
2.20
0.150
0.090
0.060
0.900
0.350
0.210
8.00
8.00
8.00
0.10
0.20
0.30
0.5
0.6
0.6
Environmental Characteristics
Operating 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
Test Procedures And Requirements For Model MF-PSMF 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 ....................................ANSI/J-STD-002 ............................................................95 % min. coverage
UL File Number ..................................E174545
http://www.ul.com/ Follow link to Certifications, then UL File No., enter E174545
Thermal Derating Chart - Ihold (Amps)
Ambient Operating Temperature
Model
MF-PSMF050
MF-PSMF075
MF-PSMF110
-40
°C
0.68
1.00
1.45
-20
°C
0.62
0.90
1.35
0
°C
0.55
0.79
1.20
23
°C
0.50
0.75
1.10
40
°C
0.40
0.63
0.92
50
°C
0.37
0.57
0.84
60
°C
0.33
0.53
0.75
70
°C
0.29
0.42
0.65
85
°C
0.23
0.35
0.52
*
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.
Additional Features
■
Additional Applications
■
Patents pending
Automotive electronic control modules
MF-PSMF Series -
PTC Resettable Fuses
Product Dimensions
Model
MF-PSMF050
MF-PSMF075
MF-PSMF110
Packaging: 3000 pcs. per reel.
A
Min.
2.00
(0.079)
2.00
(0.079)
2.00
(0.079)
Max.
2.30
(0.091)
2.30
(0.091)
2.30
(0.091)
Min.
1.20
(0.047)
1.20
(0.047)
1.20
(0.047)
B
Max.
1.50
(0.059)
1.50
(0.059)
1.50
(0.059)
Min.
0.48
(0.019)
0.75
(0.030)
0.75
(0.030)
C
Max.
0.85
(0.033)
1.25
(0.049)
1.25
(0.049)
D
Min.
0.20
(0.008)
0.20
(0.008)
0.20
(0.008)
UNIT =
MM
(INCHES)
Top View
Bottom View
A
Side View
C
Recommended Pad Layout
Terminal material:
Nickel/gold plated.
Termination pad solderability:
Standard Au finish:
Meets ANSI/J-STD-002 Category 2.
Recommended Storage:
40 °C max./70 % RH max.
4
D
B
1.50 ± 0.10
(.059 ± .004)
1.00 ± 0.05
(.039 ± .002)
1.20 ± 0.10
(.047 ± .004)
Typical Time to Trip at 23
°
C
How to Order
10
Multifuse
®
Product
Designator
MF - PSMF 050 - 2
Series
PSMF = 0805 Surface Mount
Component
Hold Current, Ihold
050-110 (0.50 - 1.10 Amps)
Packaging
Packaged per EIA 481-1
-2 = Tape and Reel
MF-PSMF075
MF-PSMF110
1
Time to Trip (Seconds)
0.1
MF-PSMF050
Typical Part Marking
Represents total content. Layout may vary.
PART IDENTIFICATION:
MF-PSMF050 = 4
MF-PSMF075 = 5
MF-PSMF110 = 6
0.01
4
BIWEEKLY DATE CODE WILL APPEAR ON THE PACKAGING LABEL:
WEEK 1 AND 2 = A
WEEK 51 AND 52 = Z
0.001
0.1
1
10
100
The Time to Trip curves represent typical performance of a device in a simulated application
environment. Actual performance in specific customer applications may differ from these values due
to the influence of other variables.
Specifications are subject to change without notice.
Customers should verify actual device performance in their specific applications.
MF-PSMF Series -
PTC Resettable Fuses
Solder Reflow Recommendations
Preheating
Soldering
Cooling
Notes:
• MF-PSMF models cannot be wave soldered. Please
contact Bourns for hand soldering recommendations.
• If reflow temperatures exceed the recommended profile,
devices may not meet the performance requirements.
• Compatible with Pb and Pb-free solder reflow profiles.
300
250
Temperature (°C)
200
150
100
50
0
160–220
10–20
Time (seconds)
120
Reliable Electronic Solutions
Asia-Pacific:
Tel: +886-2 2562-4117 • Fax: +886-2 2562-4116
Europe:
Tel: +41-41 768 5555 • Fax: +41-41 768 5510
The Americas:
Tel: +1-951 781-5500 • Fax: +1-951 781-5700
www.bourns.com
MF-PSMF SERIES, REV. A, 08/07
Specifications are subject to change without notice.
Customers should verify actual device performance in their specific applications.
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