Riedon Inc.

300 Cypress Avenue

Alhambra CA 91801

(626) 284-9901

(626) 284-1704

www.riedon.com

Page 84

07/13

Derating

Dimensions

Power SMD Resistors

Dimension

mm

tol.

(±mm)

inches

tol.

(±inches)

A

8.26

0.2

0.33

0.008

B

8.13

0.2

0.32

0.008

C

6.35

0.1

0.25

0.004

D

4.31

0.1

0.17

0.004

E

1.35

0.1

0.05

0.004

F

5.08

0.1

0.20

0.004

G

0.76

0.1

0.03

0.004

H

2.79

0.1

0.11

0.004

I

0.8

0.1

0.03

0.004

J

9.55

0.2

0.38

0.008

K

10.92

0.2

0.43

0.008

L

12.32

0.2

0.49

0.008

M

0.6

0.1

0.02

0.004

N

1.47

0.1

0.06

0.004

Dimension

mm

inches

A

8.51

0.335

B

7.87

0.310

C

14.1

0.555

D

5.08

0.200

E

1.65

0.065

F

3.81

0.150

Power Rating Notes -

The NPS Series Resistors must be attached to a suitable heat-

sink. The maximum internal resistor temperature is 175°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 )

0

20

40

60

80

100

120

0 25 40 55 70 85 100 115 130 145 155 175

Temperature of the backplate (°C)