TKH Series
45W TO-252 Thick Film Resistor
F e aT u r e S
• 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.
CHaraCTeriSTiCS
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
0.02Ω-510kΩ; 0.02Ω-0.91Ω are available
Range
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
10A
Current
Max. Operating
less than 500V or √
P•R
P is rated power
Volt.
and R resistance
Test Requirement
Short Time
50W
Overload
TCR
100ppm/°C
Withstanding
1500 VAC
Volt.
Load Life
±1.0%
Humidity
±1.0%
Temp. Cycle
±0.25%
Soldering Heat
±0.1%
Lead
Over 95% of
Solderability
surface
Insulation
Over 1,000MΩ
Resistance
Vibration
±0.25%
Weight
0.324 gram
Method
Rated power X 2.0 and 5 second at
25°C with heat-sink
10Ω to 51kΩ, around 100 ppm/°C
under 9.1Ω
Terminal and back metal, 60 seconds.
1mA
25°C, 90 min. ON, 30 min. OFF, 1000h.
40°C, 90-95%RH, DC 0.1W, 1000
hours.
-55°C,30 min.,+155°C, 30 min., 5cycle
350 ±5°C, 3 seconds
230° ±5°C, 3 seconds
Between terminals and back metal
IEC60068-2-6
Derating
50
Power (W)
40
30
20
10
0
-50
+25°C
+175°C
0
50
100 150 200
Back Metal Temperature (°C)
Frequency Characteristics
1000
Impedance (ohm)
Pulse Energy Durability
100k
Pulse peak power (W)
10k
1k
100
10 ohm F with heat sink
Temperature Rise
200
Temperature (°C)
100
100Ohm F
Resistor temp.
100
Base metal temp.
980W
45W
10
1.0
10
100
Frequency (MHz)
1000
10
10n
1u
100u 10m
1
100
100n 10u
1m 100m
10
Pulse width (seconds)
0
0
5
10
Applied Power (W)
15
Construction
Terminals
Pd-Ag film
Ni plating & Tin plating
Terminals
Copper, Ni plating
& Tin plating
Resistive layer
Ni-Cr alloy
Molding
Epoxy resin
UL-94 V-0
Heat sink
Pd-Ag film
Ni plating & Tin plating
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
substrate
ALO
1mm thickness
(continued)
154
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MEMS sensors
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