3296W-LTC-253LF Bourns Inc., 3296W-LTC-253LF Datasheet

Trimmer Resistors - Multi Turn 3/8 SQ CERMET 25K SEALED TRIM POT

3296W-LTC-253LF

Manufacturer Part Number

3296W-LTC-253LF

Description

Trimmer Resistors - Multi Turn 3/8 SQ CERMET 25K SEALED TRIM POT

Manufacturer

Bourns Inc.

Type

Trimmerr

Datasheets

1.Q23518.pdf (2 pages)

2.3296W-LTC-253LF.pdf (1 pages)

Specifications of 3296W-LTC-253LF

Resistance

25kohm

Power Rating

1/2W

Tolerance (+ Or -)

10%

Number Of Turns

25Turn

Technology

Cermet

Mounting Style

Through Hole

Termination Style

Operating Temp Range

-55C to 150C

Failure Rate

Not Required

Shaft Diameter (mm)

2.19mm

Product Diameter (mm)

Not Requiredmm

Product Length (mm)

9.53mm

Product Height (mm)

11.55mm

Product Depth (mm)

4.83mm

Temperature Coefficient

±50

Tolerance

10 %

Element Type

Cermet

Product

Trimmers

Lead Free Status / RoHS Status

Compliant

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Electrical Characteristics

Standard Resistance Range

Resistance Tolerance ........... ±10 % std.

Absolute Minimum Resistance

Contact Resistance Variation

Adjustability

Resolution ................................... Inﬁ nite

Insulation Resistance ............... 500 vdc.

Dielectric Strength

Effective Travel .................25 turns nom.

Environmental Characteristics

Power Rating (300 volts max.)

Temperature Range

Temperature Coefﬁ cient

Seal Test ......................85 °C Fluorinert†

Humidity .......MIL-STD-202 Method 103

Vibration ....... 20 G (1 % ΔTR; 1 % ΔVR)

Shock ......... 100 G (1 % ΔTR; 1 % ΔVR)

Load Life

Rotational Life .......................200 cycles

Physical Characteristics

Torque ............................. 3.0 oz-in. max.

Mechanical Stops ................. Wiper idles

Terminals .......................Solderable pins

Weight ....................................... 0.03 oz.

Marking ........................... Manufacturer’s

Wiper .................................50 % ±10 %

Flammability ..........................U.L. 94V-0

Standard Packaging .....50 pcs. per tube

Adjustment Tool ..............................H-90

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

“Trimpot” is a registered trademark of Bourns, Inc.

†“Fluorinert” is a registered trademark of 3M Co.

Speciﬁ cations are subject to change without notice.

Customers should verify actual device performance in their speciﬁ c applications.

Voltage .................................. ±0.01 %

Resistance ............................ ±0.05 %

Sea Level................................ 900 vac

70,000 Feet ............................ 350 vac

70 °C ...................................... 0.5 watt

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

End to End ...................... ±20 ppm/°C

Through the Wiper .......... ±50 ppm/°C

.................................. 2K to 25K ohms

........................... 1 % or 2 ohms max.

........................ 1.0 % or 3 ohms max.

............................... -55 °C to +150 °C

............. 1,000 hours 0.5 watt @ 70 °C

(see standard resistance table)

trademark, resistance code,

(2 % ΔTR, 10 Megohms IR)

(tighter tolerance available)

wiring diagram, date code,

(3 % ΔTR; 3 % or 3 ohms,

whichever is greater, CRV)

(4 % ΔTR; 3 % or 3 ohms,

whichever is greater, CRV)

manufacturer’s model

(whichever is greater)

1,000 megohms min.

number and style

96 hours

Features

■

3296-LTC - 3/8 ” Square Trimpot

(.252 ± .052)

(.020 ± .001)

TOLERANCES: ±

NOTE: TCR through the wiper applies when

40 % or more of the resistance element is in the

circuit.

Common Dimensions

3296P

3296W

3296X

6.40 ± 1.32

(.015)

(.100)

.51 ± .03

2.54

Product Dimensions

.38

Low TCR

Multiturn / Cermet / Industrial / Sealed

3 terminal styles

Chevron seal design

Mounting hardware available (H-117P)

RoHS compliant* version available

(.100)

CCW

2.54

MIN.

DIA.

DIMENSIONS:

(.100)

2.54

CLOCKWISE

(.206)

5.23

(.010)

0.25

(.100)

ADJ. SLOT

(.086)

(.022)

(.030)

2.19

.56

2.54

.76

10.03

(.395)

WIPER

(INCHES)

(.100)

2.54

(.050 ± .004)

EXCEPT WHERE NOTED

2.54

1.27 ± 0.1

WIDE

DIA.

DEEP

(.100)

(.060)

(.100)

2.54

1.52

2.54

(.100)

2.54

(.325 ± .025 )

(.050 ± .004)

(.190 ± .005 )

8.26 ± .64

1.27 ± 0.1

4.83 ± .13

(.375)

(.095)

9.53

2.41

Applications

■

Popular values listed in boldface. Special

resistances available.

Model

Style

Product Indicator

Resistance Code

Terminations

Consult factory for other available options.

How To Order

Rheostat applications with wiper currents

less than 25 microamps

Process control instrumentation

Power supplies

Trimming Potentiometer

Standard Resistance Table

LF =

Blank = 90 % Tin / 10 % Lead-plated

Resistance

Model 3296-LTC is obsolete and not

(Ohms)

10,000

20,000

25,000

recommended for new designs.

1,000

2,000

5,000

100 % Tin-plated (RoHS compliant)

(Standard)

Model 3296

3296 W - LTC - 103 LF

is preferred.

Resistance

Code

102

202

502

103

203

253

REV. 11/09

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