*** Features Multifuse
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
Test
Visual/Mech. ......................................................... Verify dimensions and materials ........................... Per MF physical description
Resistance ............................................................ In still air @ 23 °C .................................................. Rmin ≤ R ≤ R1max
Time to Trip ........................................................... At specifi ed 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
MF-LSMF185/33X
MF-LSMF260X
MF-LSMF300X
MF-LSMF300/24X
Environmental Characteristics
Test Procedures And Requirements For Model MF-LSMF Series
Electrical Characteristics
Model***
**Bourns is using the defi nition that appears to be the prevalent defi nition used as the industry standard at this time. The Bourns defi nition of “halogen-free” is:
®
Free Xpansion Design
V max.
Volts
33.0
24.0
24.0
6.0
™
I max.
Amps
for MF-LSMF Series.
40
20
40
20
Condition A
Test Conditions
http://www.ul.com/ Follow link to Certifi cations, then UL File No., enter E174545
Features
■
■
■
■
■
MF-LSMF Series - PTC Resettable Fuses
High power ratings
Compliant with AEC-Q200 Rev-C- Stress
Test Qualifi cation for Passive Components
in Automotive Applications
Low profi le
Compatible with Pb and Pb-free solder
refl ow profi les
RoHS compliant* and halogen free**
I hold
Hold
1.85
2.60
3.00
3.00
Bromine (Br) content: ≤ 900 ppm; Chlorine (Cl) content: ≤ 900 ppm; Total Br + Cl content: ≤1500 ppm.
Amperes
at 23 °C
3.70
5.20
5.00
5.20
I trip
Trip
Customers should verify actual device performance in their specifi c applications.
R Min.
0.045
0.020
0.015
0.020
Resistance
at 23 °C
Ohms
R 1Max.
0.150
0.075
0.048
0.075
*RoHS Directive 2002/95/EC Jan 27, 2003 including Annex.
■
■
■
Accept/Reject Criteria
Surface mount packaging for automated
assembly
Agency recognition:
Standard 7555 mm (2920 mils) footprint
Amperes
at 23 °C
Specifi cations are subject to change without notice.
8.0
8.0
8.0
8.0
Max. Time
To Trip
Seconds
at 23 °C
20.00
2.50
5.00
5.00
Dissipation
at 23 °C
Tripped
Power
Watts
Typ.
1.5
1.5
1.5
1.5