3386-OT1

Model 3386-OT1 is obsolete and
not recommended for new
designs.
*R
oH
V SC
AV ER OM
AI SIO PL
LA N IA
BL S NT
E
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
■ Vertical adjust type available
■ For trimmer applications/processing
guidelines, click here
3386-OT1 - 3/8 ” Square Trimpot® Trimming Potentiometer
Electrical Characteristics
Standard Resistance Range
......................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 ...... 280 ° nom.
Center Tap Resistance ...... 2 ohms max.
Center Tap Electrical Center.......... ±5 %
Center Tap Dead Band ................6 °±4 °
Standard Resistance Table
Product Dimensions
3386P-OT1
4.83
(.190)
5.97 ± .89
(.235 ± .035)
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
4.70 ± .51
(.185 ± .030)
2.54
(.100)
3
2
.38
MIN.
(.015)
2.54
4 (.100)
2.54
(.100)
2.54
(.100)
1
.51 ± .05 DIA.
(.020 ± .002)
9.53
(.375)
E
T
E
L
O
S
B
O
Environmental Characteristics
Power Rating
85 °C ...................................... 0.5 watt
150 °C ....................................... 0 watt
Temperature Range ... -55 °C to +150 °C
Temperature Stability (ΔVR)
....................................... ±0.5 % max.
Seal Test ......................85 °C Fluorinert†
Humidity .......MIL-STD-202 Method 103
96 hours ±2 %
ΔTR 10 Megohms min.
Vibration, 30 G ...................... ±1 % ΔTR
Shock, 100 G ........................ ±1 % ΔTR
Load Life, 1,000 Hours .......... ±3 % ΔTR
Rotational Life, 200 cycles .... ±4 % ΔTR
Physical Characteristics
Mechanical Angle ................. 310 ° nom.
Torque............................. 5.0 oz-in. max.
Stop Strength ................ 15.0 oz-in. min.
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
Also see Model 3296-OT1.
Popular values listed in boldface. Special
resistances available.
9.53
(.375)
ADJ. SLOT
.76
WIDE
(.030)
X .76 DEEP
(.030)
X 3.81 LONG
(.150)
Shaded areas typically not stocked by
distributors and not recommended for new
designs.
5.64
(.222)
DIMENSIONS:
TOLERANCES: ±
0.25
(.010)
MM
(INCHES)
EXCEPT WHERE NOTED
CLOCKWISE
2
WIPER
3
1
CCW
4
CW
CENTER TAP
Suggested Offset Voltage Adjustment Circuit
+V
3
R2
- INPUT
-
R2
+ INPUT
+
OUTPUT
R5
2
4
R3
20KΩ
R6
10Ω
1
–V
R1 20KΩ
BOURNS OFFSET TRIMMER
How To Order
3386 P - OT1 - 103 LF
Model
Style
Catalog Product
Resistance Code
REV. 10/11
Resistance
Code
101
201
501
102
202
502
103
203
503
104
204
504
105
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.
R4 = R5 + R6
OFFSET
ADJUSTMENT
RANGE = ±V (R3/R6)(R2/R2 + R5)
R2 & R4> R6
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