Model 3386-OT1 is obsolete and
not recommended for new
designs.
Features
■ Single-Turn / Cermet / Industrial / Sealed
■ Designed for operational amplifier offset
voltage adjustment applications
■ Reduces power supply drift errors
■ Unique center tapped trimming
■ RoHS compliant* version available
potentiometer
■ For trimmer applications/processing
guidelines, click here
■ Vertical adjust type available
3386-OT1 - 3/8 ” Square Trimpot® Trimming Potentiometer
Standard Resistance Table
Electrical Characteristics
Product Dimensions
3386P-OT1
Standard Resistance Range
......................100 ohms to 1 megohm
(see standard resistance table)
Resistance Tolerance ...........±±0 ꢀ std.
Absolute Minimum Resistance
.......................................± ohms max.
Voltage Output Variation........... ±0.±2 ꢀ
Adjustability (VR) .................... ±0.0±2 ꢀ
Insulation Resistance @ 200 vdc
Resistance
(Ohms)
100
Resistance
Code
101
±01
201
10±
±0±
20±
103
±03
203
10ꢁ
±0ꢁ
20ꢁ
102
4.83
(.190)
4.70 .51
(.185 .030)
2.54
3
±00
5.97 .89
(.235 .035)
200
(.100)
1,000
±,000
2
2,000
2.54
(.100)
10,000
±0,000
20,000
100,000
±00,000
200,000
1,000,000
4
2.54
.38
1
MIN.
(.015)
(.100)
2.54
(.100)
..........................1,000 megohms min.
Dielectric Strength
.51 .05
(.020 .002)
DIA.
9.53
Sea Level................................ 900 vac
70,000 Feet............................ 320 vac
Effective Electrical Travel...... ±80 ° nom.
Center Tap Resistance ......± ohms max.
Center Tap Electrical Center.......... ±2 ꢀ
Center Tap Dead Band................6 °±ꢁ °
(.375)
Popular values listed in boldface. Special
resistances available.
9.53
(.375)
Shaded areas typically not stocked by
distributors and not recommended for new
designs.
ADJ. SLOT
.76
WIDE
Environmental Characteristics
(.030)
.76
(.030)
3.81
X
X
DEEP
LONG
MM
DIMENSIONS:
Power Rating
5.64
(.222)
(INCHES)
82 °C......................................0.2 watt
120 °C.......................................0 watt
Temperature Range...-22 °C to +120 °C
Temperature Stability (ΔVR)
....................................... ±0.2 ꢀ max.
Seal Test......................82 °C Fluorinert†
Humidity .......MIL-STD-±0± Method 103
96 hours ±± ꢀ
(.150)
0.25
(.010)
TOLERANCES:
EXCEPT WHERE NOTED
CLOCKWISE
WIPER
2
CW
CCW
3
1
ΔTR 10 Megohms min.
CENTER TAP
4
Vibration, 30 G ...................... ±1 ꢀ ΔTR
Shock, 100 G ........................ ±1 ꢀ ΔTR
Load Life, 1,000 Hours.......... ±3 ꢀ ΔTR
Rotational Life, ±00 cycles .... ±ꢁ ꢀ ΔTR
Suggested Offset Voltage Adjustment Circuit
R2
+V
3
- INPUT
+ INPUT
-
OUTPUT
R2
Physical Characteristics
+
Mechanical Angle................. 310 ° nom.
Torque.............................2.0 oz-in. max.
Stop Strength ................12.0 oz-in. min.
Terminals .......................Solderable pins
Weight .......................................0.03 oz.
Marking...........................Manufacturer’s
trademark, resistance code,
R5
R3
20KΩ
2
4
R6
10Ω
R4 = R5 + R6
OFFSET
ADJUSTMENT
RANGE = V (R3/R6)(R2/R2 + R5)
R2 & R4> R6
1
–V
R1 20KΩ
wiring diagram, date
BOURNS OFFSET TRIMMER
code, manufacturer’s model
number and style
Flammability ..........................U.L. 9ꢁV-0
Standard Packaging
How To Order
3386 P - OT1 - 103 LF
.......................... 20 pcs. per tube/tray
Adjustment Tool..............................H-90
Model
Style
Also see Model 3±96-OT1.
Catalog Product
Resistance Code
Terminations
LF =
100 ꢀ Tin-plated (RoHS compliant)
REV. 10/11
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.
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