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oH
VE S CO
AV R M
AI SIO PL
LA N IA
BL S NT
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Features
■
Single-Turn / Cermet / Industrial / Sealed
■
Designed for operational amplifier offset
Model 3386-OT1 is obsolete and
not recommended for new
designs.
voltage adjustment applications
■
Reduces power supply drift errors
■
Unique center tapped trimming
potentiometer
■
Vertical adjust type available
■
RoHS compliant* version 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 °
Product Dimensions
3386P-OT1
4.83
(.190)
5.97
±
.89
(.235
±
.035)
4.70
±
.51
(.185
±
.030)
2.54
(.100)
Standard Resistance Table
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
Resistance
Code
101
201
501
102
202
502
103
203
503
104
204
504
105
3
2
2.54
4
(.100)
2.54
(.100)
2.54
(.100)
.38
MIN.
(.015)
.51
±
.05 DIA.
(.020
±
.002)
9.53
(.375)
1
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
E
T
E
L
O
S
B
O
9.53
(.375)
Popular values listed in boldface. Special
resistances available.
Shaded areas typically not stocked by
distributors and not recommended for new
designs.
DIMENSIONS:
0.25
(.010)
MM
(INCHES)
EXCEPT WHERE NOTED
ADJ. SLOT
.76
WIDE
(.030)
.76 DEEP
X
(.030)
X 3.81 LONG
(.150)
5.64
(.222)
TOLERANCES: ±
CLOCKWISE
2
WIPER
CCW
1
3
CW
4
CENTER TAP
Suggested Offset Voltage Adjustment Circuit
+V
3
- INPUT
R2
R2
R5
4
2
R3
20KΩ
-
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.
+ INPUT
+
OUTPUT
R6
10Ω
1
–V
R1 20KΩ
BOURNS OFFSET TRIMMER
R4 = R5 + R6
OFFSET
ADJUSTMENT
RANGE = ±V (R3/R6)(R2/R2 + R5)
R2 & R4> R6
How To Order
3386 P - OT1 - 103 LF
Model
Style
Catalog Product
Resistance Code
Terminations
LF =
100 % Tin-plated (RoHS compliant)
Blank = 90 % Tin / 10 % Lead-plated
(Standard)
REV. 10/11
*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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