Datasheet

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154
TKH Series
45W TO-252 Thick Film Resistor
FEATURES
•Smallsize,lowprofile,surgecapablefilmresistor
•-55°Cto+175°Ctemperaturerangeprovidesfor
automotiveapplications.
•Lowthermalresistanceunder3.0°C/Wshows
excellentcoolingperformance.
•EasytoreplaceD-PAKpowerresistor.
•Excellentrfcharacteristicsforhighspeedpulse
operation.
•Applicationsincludesnubber,gatecontrol,bleeder,
filter,rushcurrentprotection,PV,UPSandmotor
controlinverters.
Tentative continuous-pulse
power allowance at duty 0.01.
Load life test will be necessary
in actual equipments, because
curve may be changed by
resistance, repetition, duty and
operating temperature.
Actual temperature rise for TKH
that is jointed on a metal insu-
lated circuit board of 47mm x
73mm x 1mm thick
CHARACTERISTICS
Derating
Construction
Pulse Energy DurabilityFrequency Characteristics Temperature Rise
Terminals
Pd-Ag film
Ni plating & Tin plating
Terminals
Copper, Ni plating
& Tin plating
substrate
ALO
1mm thickness
Resistive layer
Ni-Cr alloy
Molding
Epoxy resin
UL-94 V-0
Heat sink
Pd-Ag film
Ni plating & Tin plating
Applied Power (W)
Temperature (°C)
200
100
0
0 5 10 15
Base metal temp.
Resistor temp.
Pulse width (seconds)
100k
10k
1k
100
10
Pulse peak power (W)
10 ohm F with heat sink
980W
45W
10n 1u 100u 10m 1 100
100n 10u 1m 100m 10
Back Metal Temperature (°C)
50
40
30
20
10
0
+175°C
Power (W)
+25°C
0 150 20050-50 100
Frequency (MHz)
Impedance (ohm)
1000
100
100Ohm F
10
1.0 10 100 1000
Rated Power
45W at -55°C to 25°C backing metal
temperature; 1.0W attached on simple
foot print.
Heat Resistance
3.0°C/W resistor to back metal
Resistance
Range
0.02Ω-510kΩ; 0.02Ω-0.91Ω are available
at 5% tol. only. E24 plus 2.5, 4.0, 5.0,
8.0, and 16
Tolerance
±1% (F)
Resistor Material
Thick Film
Capacitance
2.65 pF Equivalent parallel capacitance,
typical
Inductance
14.65 nH Equivalent series inductance,
typical
Operating Temp.
-55°C to+175°C
Max. Operating
Current
10A
Max. Operating
Volt.
less than 500V or √
P•R P is rated power
and R resistance
Test Requirement Method
Short Time
Overload
50W Rated power X 2.0 and 5 second at
25°C with heat-sink
TCR
100ppm/°C 10Ω to 51kΩ, around 100 ppm/°C
under 9.1Ω
Withstanding
Volt.
1500 VAC Terminal and back metal, 60 seconds.
1mA
Load Life
±1.0% 25°C, 90 min. ON, 30 min. OFF, 1000h.
Humidity
±1.0% 40°C, 90-95%RH, DC 0.1W, 1000
hours.
Temp. Cycle
±0.25% -55°C,30 min.,+155°C, 30 min., 5cycle
Soldering Heat
±0.1% 350 ±5°C, 3 seconds
Lead
Solderability
Over 95% of
surface
230° ±5°C, 3 seconds
Insulation
Resistance
Over 1,000MΩ Between terminals and back metal
Vibration
±0.25% IEC60068-2-6
Weight
0.324 gram
(continued)