AV
DI TH AIL
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ON
Features
s
s
s
s
s
s
s
Single Turn / Cermet / Industrial / Sealed
Available on tape and reel (see page 71
for details)
Available with a knob for finger adjust
Available with extended shaft
Available with cross-slot rotor
Top and side adjust types (F, P, H, W, X
most popular)
High voltage types available
(see page 61 for details)
3386 - 3/8” Square Trimming Potentiometer
Electrical Characteristics
Standard Resistance Range
..................................10 to 2 megohms
(see standard resistance table)
Resistance Tolerance .............±10% std.
(tighter tolerance available)
Absolute Minimum Resistance
.........................................2 ohms max.
Contact Resistance Variation
..............................2% or 3 ohms max.
(whichever is greater)
Adjustability
Voltage .....................................±0.05%
Resistance ...............................±0.15%
Resolution.....................................Infinite
Insulation Resistance ................500 vdc.
1,000 megohms min.
Dielectric Strength
Sea Level .................................900 vac
70,000 Feet ..............................350 vac
Adjustment Angle ...................280° nom.
Environmental Characteristics
Power Rating (300 volts max.)
85°C.........................................0.5 watt
125°C..........................................0 watt
Temperature Range
...................................-55°C to +125°C
Temperature Coefficient
.........................................±100ppm/°C
Seal Test ........................85°C Fluorinert*
Humidity........MIL-STD-202 Method 103
96 hours
(2%
∆TR,
10 Megohms min.)
Vibration............30G (1%
∆TR;
1%
∆VR)
Shock..............100G (1%
∆TR;
1%
∆VR)
Load Life
...............1,000 hours 0.5 watt @ 70°C
(3%
∆TR;
1% or 1 ohm,
whichever is greater, CRV)
Rotational Life ........................200 cycles
(4%
∆TR;
1% or 1 ohm,
whichever is greater, CRV)
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
Standard Packaging
...................................50 pcs. per tube
Wiper Positioned at 50% Nominal
Adjustment Tool ..............................H-90
*”FLUORINERT” IS A REGISTERED TRADEMARK OF 3M CO.
Specifications are subject to change without notice.
Common Dimensions
Side Adjust
ADJ. SLOT
.76
WIDE
(.030)
X .76 DEEP
(.030)
X 3.15 LONG
(.124)
.38
MIN.
(.015)
3386W
1
2
3
9.53 9.53
(.375) (.375)
2.44
(.096)
2.54
(.100)
2.54
(.100)
5.97
±
.89
(.235
±
.035)
5.33
(.210)
.51
±
.05 DIA. PINS
(.020
±
.002)
4.83
(.190)
3
2
1
3386X
2.54
(.100)
3
2
1
3386B
1.40
±
.38
(.055
±
.015)
2.54
(.100)
2.54
(.100)
3.56
±
.38
(.140
±
.015)
3.81
(.150)
3.81
(.150)
Standard Resistance Table
Resistance
(Ohms)
10
20
50
100
200
500
1,000
2,000
5,000
10,000
20,000
25,000
50,000
100,000
200,000
250,000
500,000
1,000,000
2,000,000
Special resistances available.
Resistance
Code
100
200
500
101
201
501
102
202
502
103
203
253
503
104
204
254
504
105
205
3386C
3
2
1
3.56
±
.38
(.140
±
.015)
2.54
(.100)
2.54
(.100)
3386H
2.54
(.100)
1
2
3
1.40
±
.38
(.055
±
.015)
2.54
(.100)
2.54
(.100)
How To Order
3386J
3
2
1
3386 P - 1 - 103 T
Model
Style
2.44
(.096)
3.81
(.150)
3.81
(.150)
Standard or Modified
Product Indicator
-1 = Standard Product
-EY5 = Extended Shaft
Resistance Code
Optional Suffix Letter
T = Knob
3386S
1
2
3
Consult factory for other available options.
3.81
(.150)
3.81
(.150)
2.44
(.096)
TOLERANCES: ± 0.25 (.010) EXCEPT WHERE NOTED
DIMENSIONS ARE:
METRIC
(INCHES)
SHADED AREAS TYPICALLY NOT STOCKED BY
DISTRIBUTORS AND NOT RECOMMENDED FOR NEW
DESIGNS.
59
BOURNS [ BOURNS ELECTRONIC SOLUTIONS ]
