4.57
(.180)
45° REF.
90° ± 5°
31
2
.46 ± .05
(.018 ± .002) 6.35 ± .51
(.250 ± .020)
6.78 ± 2.24
(.267 ± .088)
3329H
13
2
3329P
5.82 ± .25
(.229 ± .010)
13
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)
31
2
3329W
13
2
3329X
3329P-DK9-RC
6.35 ± .51
(.250 ± .020)
5.79
(.228)
4.75
(.187)
.46 ± .05
(.018 ± .002)
.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
XDEEP
DIA.
MIN.
DIA. 3 PINS
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)
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)
.38
(.015)
DIA. TYP.
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
XDEEP
LONG
Features
■ 1/4” Round / Single-Turn / Cermet
Industrial / Sealed
■ 5 standard terminal styles
■ Tape and reel packaging available
■ Listed on the QPL for style RJ50 per
MIL-PRF-22097 and
RJR50 per
High-Rel MIL-PRF-39035
■ RoHS compliant* version available
■ For trimmer applications/processing
guidelines,
click here
3329 - 1/4 ” Round Trimpot® Trimming Potentiometer
*RoHS Directive 2002/95/EC Jan 27 2003 including Annex.
†“Fluorinert” is a registered trademark of 3M Co.
Specifi cations are subject to change without notice.
Customers should verify actual device performance in their specifi c applications.
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 ................................... Infi nite
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 Coeffi cient ... ±100 ppm/°C
Seal Test ......................85 °C Fluorinert†
Humidity .......MIL-STD-202 Method 106
96 hours
(3 % ΔTR, 10 Megohms IR)
Vibration ....... 30 G (1 % ΔTR; 1 % ΔVR)
except “P” pin style
Shock ......... 100 G (1 % ΔTR; 1 % ΔVR)
Load Life
............ 1,000 hours 0.5 watt @ 85 °C
(3 % ΔTR; 3 % CRV)
Rotational Life .......................200 cycles
(4 % ΔTR; 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 ............... 50 % (Actual TR) ±10 %
Standard Packaging .....50 pcs. per tube
Adjustment Tool ..............................H-90
Product Dimensions
13CW
CLOCKWISE
CCW
2WIPER
How To Order
3329 M - 1 - 103 __ LF
Model
Style
Standard or Modifi ed
Product Indicator
-1 = Standard Product
-DK9 = Plastic Spacer
Resistance Code
Packaging Designator
Blank = Tube (Standard)
R = Tape and Reel (M and U Pin Styles
Only)
A = Ammo Pack (M and U Pin Styles Only)
Terminations
LF = 100 % Tin-plated (RoHS compliant)
Blank = 90 % Tin / 10 % Lead-plated
(Standard)
Consult factory for other available options.
TOLERANCES: ± 0.25 EXCEPT WHERE NOTED
(.010)
DIMENSIONS: MM
(INCHES)
*RoHS COMPLIANT
VERSIONS
AVAILABLE
“Trimpot” is a registered trademark of Bourns, Inc.
Specifi cations are subject to change without notice.
Customers should verify actual device performance in their specifi c applications.
3329 - 1/4 ” Round Trimpot® Trimming Potentiometer
Packaging Specifi cations
Standard Resistance Table
Resistance Resistance
(Ohms) Code
10 100
20 200
50 500
100 101
200 201
500 501
1,000 102
2,000 202
5,000 502
10,000 103
20,000 203
25,000 253
50,000 503
100,000 104
200,000 204
250,000 254
500,000 504
1,000,000 105
Popular distribution resistance values listed in
boldface. Special resistances available.
SIDE ADJUST
3329M-1
12.70
(.500)
12.70 + 0.3/ - 0.25
(.500 + .012/ - .010)
8.38 ± .51
(.33 ± .02)
18 + 1.0/ - 0.5
(.709 + .039/ .020)
26.4 ± .76
(1.040 ± .030)
4.0 ± 0.3
(.157 ± .012)
1
2
3
6.1 ± .25
(.240 ± .010)
3.43 ± .25
(.135 ± .010)
.457 ± .051
(.018 ± .002)
REF.
DIA.
18.034 ± 0.762
(.71 ± .03)
DIA. TYP.
ALL PINS IN-LINE ON CENTER
DIMENSIONS:
1000/REEL/BOX
2.54
(.100)
MM
(INCHES)
18 ± .76
(.709 ± .030)
TOP ADJUST
3329U-1
4.0 ± 0.3
(.157 ± .012)
1
2
3
6.35 ± .5
(.250 ± .020)
2.79 ± .25
(.110 ± .010)
24.38 ± 0.76
(.960 ± .030)
6.35
(.250)
18 + 1.0/ - 0.5
(.709 + .039/ .020)
12.70 + 0.3/ - 0.25
(.500 + .012/ - .010)
12.70
(.500) REF.
MAX.
DIA.
ALL PINS IN-LINE ON CENTER
DIMENSIONS:
1000/REEL/BOX
2.54
(.100)
MM
(INCHES)
Meets EIA Specifi cation 468.
REV. 08/10
