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PF2270 Series Datasheet

Riedon

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Datasheet

Riedon Inc. 300 Cypress Avenue Alhambra CA 91801 (626) 284-9901 (626) 284-1704
www.riedon.com sales@riedon.com Revised: 201902_006© Riedon, Inc.
Power Film Resistors
PF2270 Series
SPECIFICATIONS
Resistances from 0.1 Ohms to 1M Ohms
Power Rating to 600 Watts
Resistance Tolerances to ±1%
TCR of ±100ppm/C
TO-227 (TO-238) Housing
Moisture Resistant Encapsulation
M4x5mm Screws Included
Isolated Back Plate
Excellent Pulse Handling
Type PF2272 PF2274 PF2276
Power Rating (with heatsink) 200 W 300 W 600 W
Power Rating (without heatsink) 5 W 5 W 5 W
Additional Lead Configurations Y / Z Y / Z Y / Z
Resistance Range 0.1 to 1M Ohms
( 0.1 to 1 Ohm only available Terminal Z )
0.1 to 1M Ohms
( 0.1 to 1 Ohm only available Terminal Z )
50 to 1K Ohms
( 0.1 to 1 Ohm only available Terminal Z )
Resistance Values E12 ( Plus 2 Ohm and 5 Ohm )
Thermal Resistance 0.35 °C/W 0.23 °C/W 0.11 °C/W
Tolerances 5% ( 1% optional )
Temperature Coefficient ±100 ppm/°C
Operating Temperature -55°C to 155°C
Inductance 14 nH
MAX Continuous Voltage √ (P * R)
MAX Continuous Current 100A
Isolation Voltage 2500VAC (5000VAC on request)
Load Life ( 25°C, 90m ON, 30m OFF, 1000hr ) ±1%
Humidity ( 40°C, 90-95% RH, DC0.1W, 1000hr ) ±1%
Temp. Cycle ( -55°C 30m, 120°C 30m, 20X) ±1%
Vibration ( 0.75mm, 100m/s2, 10-54Hz, 10X,
XYZ ) ±0.25%
Insulation Resistance > 1000 MegOhm
Flammability UL94 V-0
Substrate AlO Alumina / Cu Flange AlN
Weight (grams) 20 30 30
Torque Terminals: 1.0 Nm Max / 0.6 Nm Recommended
Mounting: 1.6 Nm Max / 1 Nm Recommended
Riedon Inc. 300 Cypress Avenue Alhambra CA 91801 (626) 284-9901 (626) 284-1704
www.riedon.com sales@riedon.com Revised: 201902_006© Riedon, Inc.
Power Film Resistors
PF2270 Series
SPECIFICATIONS (continued)
Dimension mm ( ± mm ) inches ( ± inches )
A 38.0 0.2 1.50 0.008
B 25.0 0.2 0.98 0.008
C* 11.8 0.4 0.465 0.016
D 4.2 0.1 0.165 0.008
E 13.0 0.3 0.512 0.012
F 15.0 0.4 0.591 0.016
G 30.0 0.1 1.181 0.004
H 10.0 0.2 0.394 0.008
Mounting Notes -
The PF2270 Series Power 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 ). Torque termination screws to 5
in-lbs (0.6 N-m).
Back plate is isolated from both pins.
Power Rating Notes -
The PF2270 Series Power Film Resistors must be attached to
a suitable heatsink. The maximum internal resistor temperature
is 155°C.
To specify an appropriate heatsink use the following formula :
Where: RθH = Thermal Resistance of Heatsink ( K/W )
RθR = Thermal Resistance of Resistor ( K/W )
TMAX = Maximum Temperature of Resistor
TA = Ambient Temperature of Heatsink ( °C )
P = Power Through Resistor ( W )
*0.25 mm tolerance availble (-T)
Rated Power
-50 0 50 100 150 200
Base Tem
p
erature
(
°C
)
85 °C
100
80
60
40
20
0
155 °C
125 °C
Slope 0.35 °C/W
PF2270 Series Power Derating Curve
PF2272Y
PF2274Y
PF2276Y
PF2272Z
PF2274Z
PF2276Z
1
43
21
43
2
STANDARD Y Z
1
43
2
PF2272
PF2274
PF2276
Terminal Configuration & Schematics
Note: Style Z is not a true
4-terminal measurement.
Current can be applied to
any pins
( * )
RP
T P R T
H
MAX R A
=- -
H
H
Riedon Inc. 300 Cypress Avenue Alhambra CA 91801 (626) 284-9901 (626) 284-1704
www.riedon.com sales@riedon.com Revised: 201902_006© Riedon, Inc.
Power Film Resistors
PF2270 Series
SPECIFICATIONS (continued)
(*) For standard terminal style omit letter
Ordering Information
Part Type
PF 2272
PF 2274
PF 2276
Resistance
0.1 to 100K Ohms
50 to 1K Ohms
Terminal Style
(*)
Y
Z
Tolerance
5 %
(**)
(**) 1% Tolerance Optional
Part Description: Part Type - Terminal Style - Resistance - Tolerance
PF2274Y 10 Ohms 5%
1n 10n 100n 1u 10u 100u 1m 1 0m 100m 1 10 100
Pulse Width (seconds)
1000
1 00
10
1
0.1
Pulse Peak Power (kW)
200W
.
Pulse Durability PF2272 10 OHM 1%
1n 10n 100n 1u 10u 100u 1m 1 0m 100m 1 10 100
Pulse Width (seconds)
1000
1 00
10
1
0.1
Pulse Peak Power (kW)
300W
Pulse Durability PF2274 10 OHM 1%
1n 10n 100n 1u 10u 100u 1m 1 0m 100m 1 10 100
Pulse Width (seconds)
1000
1 00
10
1
0.1
Pulse Peak Power (kW)
600W
Pulse Durability PF2276 100 OHM 1% Tentative continuous pulse power allowance at duty
0.01. Load life test will be necessary in actual equip-
ment because curve may be changed by resistance,
repetition, duty, and operating temperature. Dotted line
shows estimation.
Note: Flying lead terminations are available for enhanced
clearance and creepage. Please contact factory for details.

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