MF-USHT Datasheet, PDF (1/4 Pages) –

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Features
n Compliant with AEC-Q200 Rev-C -
Stress Test Qualification for Passive
Components in Automotive Applications
n Small footprint size (1210)
n Operating temperature range up to 125 °C
n Low thermal derating factor
n Higher hold currents at elevated temperatures
n RoHS compliant*
n Agency recognition:
MF-USHT Series - PTC Resettable Fuses
Model
V max.
Volts
I max.
Amps
MF-USHT035KX
30
20
MF-USHT050KX
30
20
**R1Max. measured 24 hours post reflow.
Ihold
Itrip
Amperes
at 23 °C
Hold
Trip
0.35
1.75
0.50
2.50
Resistance
Ohms
at 23 °C
RMin.
R1Max.**
0.4
2.2
0.3
1.6
Max. Time
To Trip
Amperes Seconds
at 23 °C at 23 °C
8.0
0.1
8.0
0.1
Tripped
Power
Dissipation
Watts
at 23 °C
Typ.
1.0
1.0
Environmental Characteristics
Operating Temperature.......................................... -40 °C to +125 °C
Passive Aging........................................................ +125 °C, 1000 hours.............................................. R_final <R1max.
Humidity Aging...................................................... +85 °C, 85 % R.H. 1000 hours.............................. R_final <R1max.
Thermal Shock...................................................... +125 °C to -40 °C, 20 times................................... R_final <R1max.
Solvent Resistance................................................ MIL-STD-202, Method 215.................................... No change
Vibration................................................................ MIL-STD-883C, Method 2007.1,............................ No change
Condition A
Moisture Sensitivity Level (MSL)........................... Level 1
ESD Classification - HBM...................................... Class 6
Test Procedures And Requirements For Model MF-USHT 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
cUL File Number.................................................... E174545
http://www.ul.com/ Follow link to Certifications, then cUL File No., enter E174545
Thermal Derating Chart - Ihold (Amps)
Model
MF-USHT035KX
MF-USHT050KX
-40 °C
0.508
0.725
-20 °C
0.459
0.655
0 °C
0.406
0.580
Ambient Operating Temperature
+23 °C +40 °C +50 °C +60 °C
0.350
0.308
0.284
0.259
0.500
0.440
0.405
0.370
+70 °C
0.235
0.335
+85 °C
0.196
0.280
+125 °C
0.095
0.135
Asia-Pacific: Tel: [phone] • Email: [e-mail]
EMEA: Tel: [phone] • Email: [e-mail]
The Americas: Tel: [phone] • Email: [e-mail]
www.bourns.com
*RoHS Directive 2002/95/EC Jan. 27, 2003 including annex and RoHS Recast 2011/65/EU June 8, 2011.
Specifications are subject to change without notice.
The device characteristics and parameters in this data sheet can and do vary in different applications and actual device performance may vary over time.
Users should verify actual device performance in their specific applications.