PF2470 Series
TO-247 Power Film Resistors
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TO-247 Housing
Rated Power to 140 Watts
Resistances from 0.01 to 51K Ohms
High Stability Film Resistance Elements
Resistance Tolerance to ±0.05%
Low Inductance ( <50nH )
Isolated Back Plate
SPECIFICATIONS
Power Rating
Thermal
Resistance
Type
Resistance Range
3
Min
0.01W
Max
51KW
Heatsink1
Free Air2
Tolerances
Temperature
Coefficients
±50ppm/°C ( R≥10W
)
±100ppm/°C ( 0.1W ≤ R < 10W )
±250ppm/°C ( R < 0.1W )
±50ppm/°C ( R≥10W
)
±100ppm/°C ( 0.1W ≤ R < 10W )
±250ppm/°C ( R < 0.1W )
PF2473
140W
5W
0.9°C/W
±1% ( R≥0.10W
)
±5%
PF2472
100W
3W
1.3°C/W
0.01W
51KW
±1% ( R≥0.10W
)
±5%
Power rating based on 25°C Flange Temperature
Power rating based on 25°C Ambient Temperature
3
Consult Factory for Higher or Lower Values
1
2
Specification
Maximum Current
Temperature Range
Dielectric Strength
Max. Operating Voltage
Insulation Resistance
Value
25A
-55°C to +155°C
2000 VAC
500 V
>1000 Meg-Ohm
Environmental Performance
Load Life
Humidity Resistance
Temperature Cycle
Solder Heat
Vibration
DR
±1% + 0.05W
±1% + 0.05W
±0.25% + 0.05W
±0.1% + 0.05W
±0.25% + 0.05W
Test Conditions
25°C, 90 min ON, 30 min OFF, 1000 hr
40°C, 90-95% RH, DC 0.1W, 1000 hr
-55°C for 30 min, +155°C for 30 min, 1000 hr
+350°C, 3s
IEC60068-2-6
Riedon Inc.
11/10
300 Cypress Avenue
Alhambra CA 91801
www.riedon.com
(626) 284-9901
(626) 284-1704
RIEDON [ RIEDON POWERTRON ]
