6638S-1-102 Bourns Inc., 6638S-1-102 Datasheet

6638S-1-102

Manufacturer Part Number

6638S-1-102

Description

PRECISION POT-7/8" 22MM 1 TURN CP

Manufacturer

Bourns Inc.

Datasheet

1.6638S-433-202.pdf (1 pages)

Specifications of 6638S-1-102

Resistance

1 KOhms

Tolerance

10 %

Power Rating

1 Watt

Termination Style

Lug

Number Of Turns

Shaft Type

Slotted

Shaft Length

22.23 mm

Shaft Diameter

3.17 mm

Dimensions

22.23 mm Dia.

Product

Precision Potentiometers

Lead Free Status / Rohs Status

Lead free / RoHS Compliant

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Standard Resistance Range....................................................................................1 K to 100 K ohms

Total Resistance Tolerance .........................................................................................................±10 %

Independent Linearity ...................................................................................................................±1 %

Effective Electrical Angle .......................................................................................................340 ° ±3 °

End Voltage .................................................................................................................0.5 % maximum

Output Smoothness ....................................................................................................0.1 % maximum

Dielectric Withstanding Voltage (MIL-STD-202, Method 301)

Power Rating (Voltage Limited By Power Dissipation or 300 VAC, Whichever is Less)

Insulation Resistance (500 VDC)..................................................................1,000 megohms minimum

Resolution..................................................................................................................Essentially infinite

Operating Temperature Range...................................................................................+1 °C to +125 °C

Storage Temperature Range.....................................................................................-65 °C to +125 °C

Temperature Coefficient Over Storage Temperature Range ...........................±500 ppm/°C maximum

Vibration .........................................................................................................................................15 G

Shock .............................................................................................................................................50 G

Load Life .................................................................................................................1,000 hours, 1 watt

Rotational Life (No Load) .........................................................................20,000,000 shaft revolutions

Moisture Resistance (MIL-STD-202, Method 106)

IP Rating ........................................................................................................................................IP 40

Mechanical Angle ................................................................................................................Continuous

Torque (Starting & Running) ............................................................0.18 N-cm (0.25 oz.-in.) maximum

Shaft Runout................................................................................................0.025 mm (0.001 in.) T.I.R.

Shaft End Play ...............................................................................................0.13 mm (0.005 in.) T.I.R.

Shaft Radial Play ...........................................................................................0.08 mm (0.003 in.) T.I.R.

Backlash ........................................................................................................................0.1 º maximum

Weight ..........................................................................................................................................18 gm

Terminals.......................................................................................................................Rear turret type

Soldering Condition

Marking ................................Manufacturer’s name and part number, resistance value and tolerance,

Ganging (Multiple Section Potentiometers) .................................................................1 cup maximum

Hardware ...................................................One lockwasher (H-37-1) and one mounting unit (H-38-1)

At room ambient: +25 °C nominal and 50 % relative humidity, except as noted.

Electrical Characteristics

Environmental Characteristics

Mechanical Characteristics

Sea Level .............................................................................................................750 VAC minimum

+70 °C......................................................................................................................................1 watt

+125 °C....................................................................................................................................0 watt

Wiper Bounce ...........................................................................................0.1 millisecond maximum

Total Resistance Shift ..............................................................................................±5 % maximum

Voltage Ratio Shift ................................................................................................±0.5 % maximum

Wiper Bounce ...........................................................................................0.1 millisecond maximum

Total Resistance Shift ..............................................................................................±5 % maximum

Voltage Ratio Shift ................................................................................................±0.5 % maximum

Total Resistance Shift ............................................................................................±10 % maximum

Mounting.............................................................................170-200 N-cm (15-18 lb.-in.) maximum

Manual Soldering................................96.5Sn/3.0Ag/0.5Cu solid wire or no-clean rosin cored wire

Wave Soldering ........................................................96.5Sn/3.0Ag/0.5Cu solder with no-clean flux

Wash processes ..................................................................................................Not recommended

linearity tolerance, wiring diagram, and date code

6638 - Precision Potentiometer

Features

7/8 ” (22 mm) diameter single-turn

conductive plastic

Bushing mount

Excellent resolution

High rotational life – ball bearing

shaft support

is shipped with each potentiometer.

370 °C (700 °F) max. for 3 seconds

260 °C (500 °F) max. for 5 seconds

Customers should verify actual device performance in their specific applications.

*RoHS Directive 2002/95/EC Jan 27 2003 including Annex

BOLDFACE LISTINGS ARE IN STOCK AND READILY

AVAILABLE THROUGH DISTRIBUTION.

FOR OTHER OPTIONS CONSULT FACTORY.

22.23

(7/8)

6638

7/8 " (22 mm) DIA.

(.537 ± .015)

DIA.

13.64 ± .38

Recommended Part Numbers

Product Dimensions

6638S-1-102

6638S-1-502

6638S-1-103

Part Numbers

Non-standard features and

specifications available

Specifications are subject to change without notice.

CCW

TOLERANCES: EXCEPT WHERE NOTED

DECIMALS: .XX ±

FRACTIONS: ±1/64

DIMENSIONS:

(.062)

(1/8)

1.57

3.18

CLOCKWISE

(.20)

5.08

(IN.)

(.015)

45 ° ± 5 °

(.281+.000/-.002)

.38

(.02),

7.14 + .00/- .05

.51

WIPER

1/4"-32 UNEF-THD

22.23

(7/8)

(.032)

.XXX ±

Resistance

.81

(3/8)

(.1248+.0000/.0003)

9.53

1,000

5,000

10,000

3.170 + .000/-.008

45 ° ± 5° X (.010)

CHAMFER

SHAFT SLOT

WIDE X

(Ω)

(.005)

.127

DIA.

REV. 10/08

(.032)

.81

.25

DEEP

DIA.

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