1998 Nov 18

4

Philips Components

Product specification

Cemented wirewound resistors

AC01/03/04/05/07/10/15/20

FUNCTIONAL DESCRIPTION

Product characterization

Standard values of nominal resistance are taken from the E24 series for resistors with a tolerance of

±5%.

The values of the E24 series are in accordance with

“IEC publication 60063”.

Limiting values

Note

1. The maximum voltage that may be continuously applied to the resistor element, see

“IEC publication 60266”.

The maximum permissible hot-spot temperature is 350

°C.

DERATING

The power that the resistor can dissipate depends on the operating temperature; see Fig.1.

TYPE

LIMITING VOLTAGE(1)

(V)

LIMITING POWER

(W)

Tamb =40 °CTamb =70 °C

AC01

1

0.9

AC03

3

2.5

AC04

4

3.5

AC05

5

4.7

AC07

7

5.8

AC10

10

8.4

AC15

15

12.5

AC20

20

16.0

VP

n

R

×

=

Fig.1 Maximum dissipation (Pmax) as a function of the ambient temperature (Tamb).

handbook, 4 columns

40

0

40

70

200

100

90

50

0

Pmax

(%)

T

( C)

amb

o

MRA574