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Specifications are subject to change without notice.
51
3329 - 1/4” Round Trimming Potentiometer
Features
I
1/4” Round / Single-Turn / Cermet
Industrial / Sealed
I
5 standard terminal styles
I
Tape and reel packaging available
(see page 71 for details)
Electrical Characteristics
Standard Resistance Range
...................................10 to 1 megohm
(see standard resistance table)
Resistance Tolerance .............±10% std.
(closer tolerance available)
Absolute Minimum Resistance
.......................................1% or 2 ohms
(whichever is greater)
Contact Resistance Variation
...........................3.0% 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 .................................600 vac
80,000 Feet..............................250 vac
Adjustment Angle ...................240° nom.
Environmental Characteristics
Power Rating @ 85°C (300 volts max.)
.................................................0.5 watt
Power Rating @ 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 106
96 hours
(3%
TR, 10 Megohms IR)
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% CRV)
Rotational Life........................200 cycles
(4%
TR; 4% CRV)
Physical Characteristics
Mechanical Angle...................260° nom.
Torque .............................5.0 oz-in. max.
Stop Strength..................5.0 oz -in. min.
Terminals ........................Solderable pins
Weight ........................................0.02 oz.
Marking.........Manufacturer’s trademark,
resistance code, date code,
manufacturer’s model number
and style
Wiper ...........Positioned at 50% nominal
Standard Packaging .....50 pcs. per tube
Adjustment Tool ..............................H-90
4.57
(.180)
6.35
±
.51
(.250
±
.020)
45
°
REF.
90
°
±
5
°
3
1
2
.46
±
.05
(.018
±
.002)
DIA. TYP.
6.78
±
2.24
(.267
±
.088)
3329H
1
3
2
3329P
5.82
±
.25
(.229
±
.010)
1
3
2
3329S
6.10
(.240)
.89
(.035)
6.60
(.260)
.38
(.015)
7.75
±
2.97
(.305
±
.117)
8.38
±
.51
(.330
±
.020)
5.08
(.200)
3
1
2
3329W
1
3
2
3329X
3329P-DK9-RC
6.35
±
.51
(.250
±
.020)
5.79
(.228)
4.75
(.187)
.46
±
.05
(.018
±
.002)
DIA. 3 PINS
.43
±
.13
(.017
±
.005)
2.54
(.100)
1
2
3
ADJ. SLOT
2.79
±
.038
(.110
±
..001)
.64
(.025)
.51
(.020)
2.54
(.100)
2.54
(.100)
WIDE
X
X
DEEP
DIA.
MIN.
2.54
(.100)
.38
(.015)
2.54
(.100)
2.54
(.100)
2.54
(.100)
2.54
(.100)
2.54
(.100)
2.54
(.100)
2.54
(.100)
2.54
(.100)
2.54
(.100)
2.54
(.100)
2.54
(.100)
2.54
(.100)
6.10
(.240)
6.10
(.240)
5.08
(.200)
5.08
(.200)
6.60
(.260)
6.60
(.260)
.89
(.035)
.89
(.035)
2.54
(.100)
6.78
±
2.24
(.267
±
.088)
6.35
±
.51
(.250
±
.020)
7.75
±
2.97
(.305
±
.117)
7.75
±
2.97
(.305
±
.117)
8.38
±
.51
(.330
±
.020)
8.38
±
.51
(.330
±
.020)
.38
(.015)
.38
(.015)
ADJ. SLOT
3.56
(.140)
.64
(.025)
1.02
(.040)
WIDE
X
X
DEEP
LONG
How To Order
3329 H - 1 - 103
Model
Style
Standard or Modified
Product Indicator
-1 = Standard Product
-DK9 = Plastic Spacer
Resistance Code
Consult factory for other available options.
Standard Resistance Table
Popular values listed in boldface. Special
resistances available.
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
Resistance
Code
100
200
500
101
201
501
102
202
502
103
203
253
503
104
204
254
504
105
THOUGH
DSTRBUION
*”FLUORINERT” IS A REGISTERED TRADEMARK OF 3M CO.
SHADED AREAS TYPICALLY NOT STOCKED BY
DISTRIBUTORS AND NOT RECOMMENDED FOR NEW
DESIGNS.
DIMENSIONS ARE:
METRIC
(INCHES)
TOLERANCES: ±0.25 (.010) EXCEPT WHERE NOTED