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
†“Fluorinert” is a registered trademark of 3M Co.
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 ...................................
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
T ... ±100 ppm/°C
Seal Test ......................85 °C Fluorinert†
Humidity .......MIL-STD-202 Method 103
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
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.
Tape and reel material meets Antistatic ANSI/
ESD 5541-2003 packaging standards.
TOLERANCES: ± 0.25 EXCEPT WHERE NOTED
(.010)
DIMENSIONS: MM
(INCHES)
*RoHS COMPLIANT
VERSIONS
AVAILABLE
*RoHS Directive 2002/95/EC Jan. 27, 2003 including annex and RoHS Recast 2011/65/EU June 8, 2011.
Specifications are subject to change without notice. Users should verify actual device performance in their specific
applications. The products described herein and this document are subject to specific legal disclaimers as set forth on the
last page of this document, and at www.bourns.com/docs/legal/disclaimer.pdf.
WARNING
Cancer and Reproductive Harm
www.P65Warnings.ca.gov
“Trimpot” is a registered trademark of Bourns, Inc.
3329 - 1/4 ” Round Trimpot® Trimming Potentiometer
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)
REV. 05/16
Specifications are subject to change without notice.
Users should verify actual device performance in their specific applications.
The products described herein and this document are subject to specific legal disclaimers as set forth on the last page of this document, and at www.bourns.com/docs/legal/disclaimer.pdf.
Legal Disclaimer Notice
This legal disclaimer applies to purchasers and users of Bourns® products manufactured by or on behalf of Bourns, Inc. and
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