Features
■ Four-Turn / Cermet / Industrial / Sealed
■ Unique planetary drive offers precise
wiper setting of a multiturn in a
single-turn package size
■ Top and side adjust styles
3339 - 5/16” Round Trimming Potentiometer
Electrical Characteristics
3339H
Common Dimensions
(Top Adjust)
WIPER
2
ADJ. CROSS SLOT
Standard Resistance Range
2.54
...................................10 to 1 megohm
(see standard resistance table)
Resistance Tolerance .............±10% std.
(tighter tolerance available)
Absolute Minimum Resistance
..............................1% or 2 ohms max.
(whichever is greater)
LONG X
(.100)
CW
CCW
3
1
.64
(.025)
.76
(.030)
WIDE X
DEEP X
(2 PLACES)
CLOCKWISE
4.78
MIN.
TOLERANCES: ± 0.25 (.010) EXCEPT WHERE NOTED
.38
(.015)
(.188)
90° ± 1°
REF.
6.35
(.250)
METRIC
(INCHES)
DIMENSIONS ARE:
2.54 ± .025
(.10 ± .01)
1
3
Contact Resistance Variation
..............................3% or 3 ohms max.
(whichever is greater)
Adjustability
Voltage .....................................±0.05%
Resistance .................................±0.1%
Resolution.....................................Infinite
Insulation Resistance ................500 vdc.
1,000 megohms min.
.51
(.020)
2
How To Order
7.62
(.300)
.43 ± .05
(.017 ± .002)
DIA.
DIA.
2.54 ± .025
(.10 ± .01)
3339 H - 1 - 103
Model
Style
3339P
2.54
(.100)
2.54
(.100)
Standard or Modified
Product Indicator
6.35
(.250)
Dielectric Strength
2.54
(.100)
-1 = Standard Product
Sea Level .................................600 vac
80,000 Feet ..............................250 vac
Effective Travel....................4 turns nom.
1
Resistance Code
Consult factory for other available options.
.51
(.020)
3
2
Environmental Characteristics
7.62
(.300)
DIA.
Power Rating (300 volts max.)
85°C.........................................0.5 watt
150°C..........................................0 watt
Temperature Range
...................................-55°C to +150°C
Temperature Coefficient
.........................................±100ppm/°C
Seal Test ........................85°C Fluorinert*
Humidity........MIL-STD-202 Method 103
96 hours
Standard Resistance Table
3339S
Common Dimensions (Side Adjust)
Resistance
(Ohms)
Resistance
Code
8.00 ± .38
(.315 ± .015)
7.62
(.300)
DIA.
10
20
50
100
200
500
5.97
(.235)
9.53 ± .38
(375 ± .015)
100
101
201
501
102
202
502
103
203
253
503
104
200
500
5.54 ± .38
(.218 ± .015)
1,000
2,000
5,000
10,000
20,000
25,000
50,000
100,000
.64
(.025)
.38
.43 ± .05
(.017 ± .002)
DIA.
MIN.
(3% ∆TR, 10 Megohms IR)
2
(.015)
Vibration............30G (1% ∆TR; 1% ∆VR)
Shock..............100G (1% ∆TR; 1% ∆VR)
Load Life
...............1,000 hours 0.5 watt @ 85°C
(3% ∆TR; 3% or 3 ohms,
whichever is greater, CRV)
Rotational Life ........................200 cycles
(3% ∆TR; 3% or 3 ohms,
1
4.57
(.180)
8.13 ± .38
(.320 ± .015)
3
2.54
(.100)
2.54
(.100)
200,000
250,000
500,000
1,000,000
204
254
504
105
.51
(.020)
3339W
8.00 ± .38
(.315 ± .015)
Popular values listed in boldface. Special
resistances available.
5.97
(.235)
whichever is greater, CRV)
9.53 ± .38
(375 ± .015)
Physical Characteristics
SHADED AREAS TYPICALLY NOT STOCKED BY
DISTRIBUTORS AND NOT RECOMMENDED FOR NEW
DESIGNS.
Torque ................................3 oz-in. max.
Mechanical Stops..................Wiper idles
Terminals ........................Solderable pins
Weight ........................................0.02 oz.
Marking ...........................Manufacturer’s
trademark, resistance code,
5.54 ± .38
(.218 ± .015)
.64
(.025)
.38
(.015)
MIN.
2
8.13 ± .38
(.320 ± .015)
4.57
(.180)
1
wiring diagram, date
code, manufacturer’s
model number and style
2.54
(.100)
.51
2.54
(.100)
3
(.020)
Wiper ..........Positioned at 50% nominal
Flammability............................U.L.94V-0
Standard Packaging .....50 pcs. per tube
Adjustment Tool ..............................H-90
*”FLUORINERT” IS A REGISTERED TRADEMARK OF 3M CO.
52
Specifications are subject to change without notice.
BOURNS [ BOURNS ELECTRONIC SOLUTIONS ]
