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
*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.
Electrical Characteristics
Model
V max.
Volts
I max.
Amps
I
hold
I
trip
Resistance
Max. Time
To Trip
Tripped
Power
Dissipation
Amperes
at 23 °C
Ohms
at 23 °C
Amperes
at 23 °C
Seconds
at 23 °C
Watts
at 23 °C
Hold Trip
R
Min.
R
1Max.**
Typ.
MF-USHT035KX 30 20 0.35 1.75 0.4 2.2 8.0 0.1 1.0
MF-USHT050KX 30 20 0.50 2.50 0.3 1.6 8.0 0.1 1.0
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 ................................................. R
min
≤ R ≤ R
1max
Time to Trip ........................................................... At specied current, Vmax, 23 °C ......................... T ≤ max. time to trip (seconds)
Hold Current ......................................................... 30 min. at I
hold
..................................................... No trip
Trip Cycle Life ....................................................... V
max
, I
max
, 100 cycles ........................................ No arcing or burning
Trip Endurance ..................................................... V
max
, 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 Online Certicates Directory, then enter UL File No.
E174545, or click here
TÜV Certicate ..................................................... Certicate Number Available on Request, or click here
Thermal Derating Chart - I
hold
(Amps)
Model
Ambient Operating Temperature
-40 °C -20 °C 0 °C +23 °C +40 °C +50 °C +60 °C +70 °C +85 °C +125 °C
MF-USHT035KX 0.508 0.459 0.406 0.350 0.308 0.284 0.259 0.235 0.196 0.095
MF-USHT050KX 0.725 0.655 0.580 0.500 0.440 0.405 0.370 0.335 0.280 0.135
**R
1Max.
measured 24 hours post reow.
*RoHS COMPLIANT
*RoHS COMPLIANT
& AEC APPROVED
*RoHS COMPLIANT, **HALOGEN FREE
& AEC COMPLIANT
*RoHS and
AEC-Q200 COMPLIANT
LEAD FREE
*RoHS COMPLIANT
VERSIONS
AVAILABLE
LEAD FREE
VERSIONS ARE
RoHS COMPLIANT*
Environmental Characteristics
Operating Temperature ......................................... -40 °C to +125 °C
Passive Aging ....................................................... +125 °C, 1000 hours ............................................. R
nal
<R
1max
Humidity Aging...................................................... +85 °C, 85 % R.H. 1000 hours ............................. R
nal
<R
1max
Thermal Shock ..................................................... +125 °C to -40 °C, 20 times .................................. R
nal
<R
1max
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 Classication - HBM ..................................... Class 6