Riedon Inc.

300 Cypress Avenue

Alhambra CA 91801

(626) 284-9901

(626) 284-1704

www.riedon.com

05/16

Power Rating Notes -

The PF2470 Series Thin Film Resistors must be attached to a suit-

able heatsink. The maximum internal resistor temperature is 155°C.

To specify an appropriate heatsink use the following formula :

Where:

R

R

T

T

P = Power Through Resistor ( W )

-25

0

25

50

75

100

125

150

175

0

20

40

60

80

100

120

Backplate Temperature (°C)

Power Derating Curve

Mounting Notes -

The PF2470 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 ).

Back plate is isolated from both pins.

PF2470 Series

TO-247 Power Film Resistors

Part Description: Part Type - Resistance - Tolerance

Example: PF2472 10 Ohm 1%

Ordering Information

0.630 [16.0]

0.201 [5.1]

0.787 [20.0]

0.571 [14.5]

ø0.032 [0.8]

0.429 [10.9]

0.142 [3.6]

0.189 [4.8]

ø0.142 [ø3.6]

( *

)

R

P

T

P

R

T

H

MAX

R

A

=

-

-

H

H