3296-OT1

*R
oH
V SC
AV ER OM
AI SIO PL
LA N IA
BL S NT
E
Features
Model 3296-OT1 is obsolete and not
recommended for new designs.
■ 3/8 ” Square/ Multiturn / Cermet
Industrial / Sealed
■ Designed for operational amplifier offset
voltage adjustment applications
■ Reduces power supply drift errors
■ Unique center tapped trimming
potentiometer
■ Vertical and horizontal adjust types available
■ Mounting hardware available
■ RoHS compliant* version available
■ For trimmer applications/processing
guidelines, click here
3296-OT1 - 3/8 ” Square Trimpot® Trimming Potentiometer
Electrical Characteristics
Standard Resistance Range
(Pin 1 to Pin 3)
......................100 ohms to 1 megohm
(see standard resistance table)
Resistance Tolerance ........... ±20 % std.
Absolute Minimum Resistance
....................................... 2 ohms max.
Voltage Output Variation.......... +0.25 %
Adjustability (VR) ................... ±0.025 %
Insulation Resistance ............... 500 vdc.
1,000 megohms min.
Dielectric Strength
Sea Level................................ 900 vac
70,000 Feet ............................ 350 vac
Effective Electrical Travel, Nom.
...............................................25 turns
Center Tap Resistance ...... 2 ohms max.
Center Tap Electrical Center......... ±5 %
Center Tap Dead Band ............. 0.5 turn
Product Dimensions
CLOCKWISE
Common Dimensions
6.40
(.252
2
10.03
(.395)
1.52
(.060)
.38
MIN.
(.015)
1.32
.052)
2.54
(.100)
TYP.
CCW
.51
DIA.
(.020)
3
1
4.83
(.190)
1.27
(.05)
TYP.
4
9.53
(.375)
DIMENSIONS:
1.27
TYP.
(.05)
ADJ. SLOT
2.19 DIA.
(.086)
.56
WIDE
X
(.022)
.76
DEEP
X
(.030)
0.25
(.010)
TOLERANCES: ±
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
Flammability ..........................U.L. 94V-0
Standard Packaging
.......................... 50 pcs. per tube/tray
Adjustment Tool..............................H-90
2.41
(.095)
4
3
2
2.54
(.100)
3296X-OT1
.94
(.037)
4
3
2
2.54
(.100)
1
2.41
(.095)
MM
(INCHES)
EXCEPT WHERE NOTED
Resistance
Code
101
201
501
102
202
502
103
203
503
104
204
504
105
Popular values listed in boldface. Special
resistances available.
Suggested Offset Voltage Adjustment Circuit
+V
3
R3
4
2
R2
1
–V
R1 100KΩ
BOURNS OFFSET TRIMMER
How To Order
3296 X - OT1 - 103 LF
Style
Resistance Code
Terminations
LF =
100 % Tin-plated (RoHS compliant)
Blank = 90 % Tin / 10 % Lead-plated
(Standard)
*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.
100Ω
-
1MΩ
Catalog Product
REV. 10/11
CENTER TAP
Shaded areas typically not stocked by
distributors and not recommended for new
designs.
Model
Also see Model 3386-OT1.
Resistance
(Ohms)
100
200
500
1,000
2,000
5,000
10,000
20,000
50,000
100,000
200,000
500,000
1,000,000
.94
(.037)
1
Environmental Characteristics
Power Rating
70 °C ...................................... 0.5 watt
125 °C ....................................... 0 watt
Temperature Range ... -55 °C to +125 °C
Temperature Stability (ΔVR)
....................................... ±0.5 % max.
Seal Test ......................85 °C Fluorinert†
Humidity .......MIL-STD-202 Method 103
96 hours ................ 10 megohms min.
Vibration, 20 G....................... ±1 % ΔTR
Shock, 100 G......................... ±1 % ΔTR
Load Life, 1,000 Hours .......... ±3 % ΔTR
Rotational Life, 200 cycles .... ±4 % ΔTR
CW
Standard Resistance Table
E
T
E
L
O
S
B
O
3296W-OT1
WIPER
INPUT
+
OUTPUT
OFFSET
ADJUSTMENT
RANGE = ±V (R3/R2)
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