PF2200 Series
TO-220 Power Thin Film Resistors
•
•
•
•
•
•
•
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TO-220 Housing
Rated Power to 50 Watts
Resistances from 0.02 to 51K Ohms
High Stability Film Resistance Elements
Resistance Tolerance to ±0.1%
TCR to ±5ppm/°C
Low Inductance ( <10nH )
Isolated Mounting Tab
SPECIFICATIONS
Power Rating
Thermal
Resistance
Type
PF2205
PF2203
Resistance Range
3
Min
0.02W
0.02W
0.02W
Max
51KW
51KW
220W
51KW
51KW
Heatsink1
Free Air2
Tolerances
±1% ( R≥0.1W
)
±5%
±1% ( R≥0.1W
)
±5%
±1% ( R≥0.1W
)
±5%
±1%, ±5%
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
)
±50ppm/°C ( R≥10W
)
±100ppm/°C ( 0.1W
≤ R <
10W )
±250ppm/°C ( R < 0.1W
)
±50ppm/°C
±5ppm/°C ( R ≥ 5W
)
±25ppm/°C ( R< 5W
)
50W
35W
20W
1W
1W
1W
2.3°C/W
3.3°C/W
PF2202
10W
PF2201
10W
1W
0.5W
5.9°C/W
220W
3.3°C/W
1W
±0.1%
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
Ordering Information
Part Description: Part Type - Resistance - Tolerance - TCR
Example: PF2203 0.5 Ohm 1% 100ppm
Riedon Inc.
07/13
300 Cypress Avenue
Alhambra CA 91801
www.riedon.com
(626) 284-9901
(626) 284-1704
PF2200 Series
TO-220 Power Thin Film Resistors
SPECIFICATIONS
(continued)
Specification
Maximum Current
Temperature Range
Dielectric Strength
Max. Operating Voltage
Insulation Resistance
Inductance
Value
25A
-55°C to +155°C : PF2202, PF2203, PF2205
-55°C to +120°C : PF2201
2000 VAC
P
*
R
( 500V MAX )
>1000 Meg-Ohm
<10nH ( At the Standoff )
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
Power Derating Curve
120
100
Power Rating Notes -
The PF2200 Series Thin Film Resistors must be attached to a
suitable heatsink. Without a heatsink the maximum power rating
is 1W ( 1/2W for the PF2201 ). The maximum internal resistor
temperature is 155°C ( 120°C for the PF2201 ).
Power ( % )
80
60
40
20
0
Al
lO
PF
th
22
er
s
To specify an appropriate heatsink use the following formula :
01
R
H
H
=
-25
0
25
50
75
100
125
150
175
T
MAX
- (
P
*
R
H
R
) -
T
A
P
Where:
Backplate Temperature (°C)
R
qH
= Thermal Resistance of Heatsink ( °C/W )
R
qR
= Thermal Resistance of Resistor ( °C/W )
T
MAX
= Maximum Temperature of Resistor ( °C )
T
A
= Ambient Temperature of Heatsink ( °C )
P = Power Through Resistor ( W )
Mounting Notes -
The PF2200 Series Thin Film Resistors must be attached to
a suitable heatsink. Mount resistor using thermal grease to a
clean, flat surface. Use a compression washer to provide 150 to
300 pounds ( 665 to 1330N ) of mounting force. Torque mount-
ing screw to 8 in-lbs ( 0.9 N-m ).
Mounting tab is isolated from both pins.
Riedon Inc.
07/13
300 Cypress Avenue
Alhambra CA 91801
www.riedon.com
(626) 284-9901
(626) 284-1704
