*R
oH
VE S CO
AV R M
AI SIO PL
LA N IA
BL S NT
E
Features
■
Low TCR
■
Multiturn / Cermet / Industrial / Sealed
■
3 terminal styles
■
Chevron seal design
■
Mounting hardware available (H-117P)
■
RoHS compliant* version available
Model 3296-LTC is obsolete and not
recommended for new designs.
Model 3296
is preferred.
Applications
■
Rheostat applications with wiper currents
less than 25 microamps
■
Process control instrumentation
■
Power supplies
3296-LTC - 3/8 ” Square Trimpot
®
Trimming Potentiometer
Electrical Characteristics
Standard Resistance Range
.................................. 2K to 25K ohms
(see standard resistance table)
Resistance Tolerance ........... ±10 % std.
(tighter tolerance available)
Absolute Minimum Resistance
........................... 1 % or 2 ohms max.
(whichever is greater)
Contact Resistance Variation
........................ 1.0 % or 3 ohms max.
(whichever is greater)
Adjustability
Voltage .................................. ±0.01 %
Resistance ............................ ±0.05 %
Resolution ................................... Infinite
Insulation Resistance ............... 500 vdc.
1,000 megohms min.
Dielectric Strength
Sea Level................................ 900 vac
70,000 Feet ............................ 350 vac
Effective Travel .................25 turns nom.
Environmental Characteristics
Power Rating (300 volts max.)
70 °C ...................................... 0.5 watt
125 °C ....................................... 0 watt
Temperature Range
............................... -55 °C to +150 °C
Temperature Coefficient
End to End ...................... ±20 ppm/°C
Through the Wiper .......... ±50 ppm/°C
Seal Test ......................85 °C Fluorinert†
Humidity .......MIL-STD-202 Method 103
96 hours
(2 %
ΔTR,
10 Megohms IR)
Vibration ....... 20 G (1 %
ΔTR;
1 %
ΔVR)
Shock ......... 100 G (1 %
ΔTR;
1 %
ΔVR)
Load Life
............. 1,000 hours 0.5 watt @ 70 °C
(3 %
ΔTR;
3 % or 3 ohms,
whichever is greater, CRV)
Rotational Life .......................200 cycles
(4 %
ΔTR;
3 % or 3 ohms,
whichever is greater, CRV)
Physical Characteristics
Torque............................. 3.0 oz-in. max.
Mechanical Stops ................. Wiper idles
Terminals .......................Solderable pins
Weight ....................................... 0.03 oz.
Marking........................... Manufacturer’s
trademark, resistance code,
wiring diagram, date code,
manufacturer’s model
number and style
Wiper .................................50 % ±10 %
Flammability ..........................U.L. 94V-0
Standard Packaging .....50 pcs. per tube
Adjustment Tool..............................H-90
Product Dimensions
Common Dimensions
Standard Resistance Table
Resistance
(Ohms)
1,000
2,000
5,000
10,000
20,000
25,000
Resistance
Code
102
202
502
103
203
253
6.40 ± 1.32
(.252 ± .052)
.38
MIN.
(.015)
10.03
(.395)
1.52
(.060)
1.27 ± 0.1
(.050 ± .004)
4.83
± .13
(.190
± .005)
9.53
(.375)
1.27 ± 0.1
(.050 ± .004)
2.54
(.100)
2.54
(.100)
E
T
E
L
O
S
B
O
3296P
.51
± .03
DIA.
(.020 ± .001)
ADJ. SLOT
2.19 DIA.
(.086)
.56
WIDE
X
(.022)
.76
DEEP
X
(.030)
Popular values listed in boldface. Special
resistances available.
How To Order
3296 W - LTC - 103 LF
Model
Style
2.54
(.100)
2.54
(.100)
8.26
± .64
(.325
± .025)
Product Indicator
Resistance Code
Terminations
LF =
100 % Tin-plated (RoHS compliant)
Blank = 90 % Tin / 10 % Lead-plated
(Standard)
Consult factory for other available options.
3
2
1
5.23
(.206)
2.54
(.100)
3296W
2.54
(.100)
2.41
(.095)
3
2
2.54
1
(.100)
3296X
2.54
(.100)
3
2
2.54
1
(.100)
2.41
(.095)
2
CCW
WIPER
1
CLOCKWISE
3
CW
DIMENSIONS:
TOLERANCES: ±
0.25
(.010)
MM
(INCHES)
EXCEPT WHERE NOTED
NOTE: TCR through the wiper applies when
40 % or more of the resistance element is in the
circuit.
*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.
Specifications are subject to change without notice.
Customers should verify actual device performance in their specific applications.
REV. 11/09
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