Model 302

2" (50.8 mm) Single Turn Wirewound

Precision Potentiometer

Vishay Spectrol

Document Number: 57057

For technical questions, contact: sfer@vishay.com

www.vishay.com

Revision: 28-Jun-07

105

MATERIAL SPECIFICATIONS

Housing and Lids

Aluminum, anodized

Shaft and Clamp Rings

Stainless steel, non-magnetic

non-passivated

Terminals

Brass, plated for solderability

Bushing Mount Hardware

Lockwasher Internal Tooth:

Panel Nut:

Steel, nickel plated

Brass, nickel plated

ENVIRONMENTAL SPECIFICATIONS

Vibration

15 g thru 2000 Hz

Shock

50 g

Salt Spray

96 h

Rotational Life

1 million shaft revolutions

Temperature Range

- 55 °C to + 125 °C

MARKING

Unit

Identification

Units shall be marked with Vishay Spectrol name, model no and date code, and on each section,

resistance, resistance tolerance, linearity and terminal identification

POWER RATING CHART

(Ratings for cup No. 1.

Additional cups 75 % of values shown)

AMBIENT TEMPERATURE IN °C

20

40

60

80

100

120

140

160

0

2

4

6

8

SPECIAL 150 °C

STANDARD 125 °C

RESISTANCE ELEMENT DATA

RESISTANCE

VALUES

(

Ω)

RESO-

LUTION

(%)

OHMS

PER

TURN

MAXIMUM

CURRENT

AT 40 °C

AMBIENT

(mA)

MAXIMUM

VOLTAGE

ACROSS

COIL

(V)

WIRE

TEMP.

COEF.

(ppm/°C)

5

0.320

0.016

893

4.48

800

10

0.200

0.020

633

6.32

800

20

0.165

0.033

447

8.95

800

50

0.148

0.074

283

14.1

800

100

0.151

0.151

200

20.0

20

200

0.126

0.252

141

28.4

20

500

0.115

0.573

89.4

44.7

20

1K

0.098

0.981

63.3

63.2

20

2K

0.085

1.70

44.7

89.5

20

5K

0.059

2.93

28.3

141

20

10K

0.051

5.16

20.0

200

20

20K

0.043

8.55

14.1

284

20

50K

0.032

15.80

8.94

447

20