Riedon Inc.

300 Cypress Avenue

Alhambra CA 91801

(626) 284-9901

(626) 284-1704

www.riedon.com

07/13

Power Rating Notes -

The PF1260 Series Thin 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 :

R

q

P

Where: R

q

R

q

T

T

P = Power Through Resistor ( W )

Mounting Notes -

The PF1260 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

mounting screw to 8 in-lbs ( 0.9 Nm ).

Back plate is isolated from both pins.

PF1260 Series

TO-126 Power Thin Film Resistors

-25

0

25

50

75

100

125

150

175

0

20

40

60

80

100

120

Backplate Temperature (°C)

PF1262

Power Derating Curve