Features
Industrial / Sealed
n
5 standard terminal styles
n
Tape and reel packaging available
n
Listed on the QPL for style RJ50 per
MIL-PRF-22097 and RJR50 per
High-Rel MIL-PRF-39035
n
1/4 ˝ Round / Single-Turn / Cermet
n
RoHS compliant* version available
n
For trimmer applications/processing
guidelines, click here
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 ... ±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
3329 - 1/4 ˝ Round Trimpot
®
Trimming Potentiometer
Product Dimensions
3329H
2.54
(.100)
45° REF.
2.54
(.100)
.38
(.015)
5.79
(.228)
3329P-DK9
2
3
1
6.35 ± .51
(.250 ± .020)
ADJ. SLOT
2.79 ± .038
DIA.
(.110 ± .001)
.64
WIDE
X
(.025)
.51
DEEP
X
(.020)
4.75 MIN.
(.187)
.46 ± .05
(.018 ± .002)
DIA. TYP.
90° ± 5°
4.57
(.180)
6.35 ± .51
(.250 ± .020)
6.78 ± 2.24
(.267 ± .088)
ADJ. SLOT
3.56 LONG
(.140)
.64
WIDE
X
(.025)
1.02
DEEP
X
(.040)
.43 ± .13
(.017 ± .005)
3
2
1
.46 ± .05
(.018 ± .002)
DIA. 3 PINS
3329P
2.54
(.100)
1
2
2.54
(.100)
3
2.54
(.100)
6.78 ± 2.24
(.267 ± .088)
2.54
(.100)
2.54
(.100)
2.54
(.100)
6.35 ± .51
(.250 ± .020)
5.82 ± .25
(.229 ± .010)
MM
DIMENSIONS:
(INCHES)
0.25
TOLERANCES: ±
EXCEPT WHERE NOTED
(.010)
3329S
5.08
(.200)
6.60
(.260)
.38
(.015)
2.54
(.100)
2.54
(.100)
6.10
(.240)
2
CCW
WIPER
8.38 ± .51
(.330 ± .020)
1
CLOCKWISE
3
CW
7.75 ± 2.97
(.305 ± .117)
2.54
(.100)
1 2 3
.89
(.035)
How To Order
Model
Style
3329 M - 1 - 103 __ LF
3329W
5.08
(.200)
8.38 ± .51
(.330 ± .020)
6.60
(.260)
.38
(.015)
2.54
(.100)
2.54
(.100)
6.10
(.240)
Standard or Modified
Product Indicator
-1 = Standard Product
-DK9 = Plastic Spacer
Resistance Code
Packaging Designator
Blank = Tube (Standard)
R = Tape and Reel (M & U Pin Styles
Only)
A = Ammo Pack (M & 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.
7.75 ± 2.97
(.305 ± .117) 2.54
(.100)
.89
(.035)
3
2
1
3329X
5.08
(.200)
8.38 ± .51
(.330 ± .020)
6.60
(.260)
.38
(.015)
2.54
(.100)
2.54
(.100)
6.10
(.240)
7.75 ± 2.97
(.305 ± .117) 2.54
(.100)
1 2 3
.89
(.035)
WARNING Cancer and
Reproductive Harm
www.P65Warnings.ca.gov
*RoHS Directive 2015/863, Mar. 31, 2015 and Annex
“Trimpot” is a trademark of Bourns, Inc. †“Fluorinert” is a registered trademark of 3M Co.
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.
(.71 ± .03)
18 + 1.0/ - 0.5
(.709 + .039/ .020)
12.70 + 0.3/ - 0.25
(.500 + .012/ - .010)
6.1 ± .25
(.240 ± .010)
3.43 ± .25
(.135 ± .010)
.457 ± .051
DIA. TYP.
(.018 ± .002)
4.0 ± 0.3
(.157 ± .012)
DIA.
3329 - 1/4 ˝ Round Trimpot
®
Trimming Potentiometer
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
Resistance
Code
100
200
500
101
201
501
102
202
502
103
203
253
503
104
204
254
504
105
2.54
ALL PINS IN-LINE ON CENTER
(.100)
MM
DIMENSIONS:
(INCHES)
Packaging Specifications
SIDE ADJUST
3329M-1
26.4 ± .76
(1.040 ± .030)
12.70
REF.
(.500)
8.38 ± .51
(.33 ± .02)
1000/REEL/BOX
TOP ADJUST
3329U-1
12.70
REF.
(.500)
6.35
MAX.
(.250)
2
24.38 ± 0.76
(.960 ± .030)
3
2
1 18.034 ± 0.762
(.71 ± .03)
3
1
18 ± .76
(.709 ± .030)
18 + 1.0/ - 0.5
(.709 + .039/ .020)
12.70 + 0.3/ - 0.25
(.500 + .012/ - .010)
6.1 ± .25
(.240 ± .010)
3.43 ± .25
(.135 ± .010)
.457 ± .051
DIA. TYP.
(.018 ± .002)
4.0 ± 0.3
(.157 ± .012)
DIA.
18 + 1.0/ - 0.5
(.709 + .039/ .020)
12.70 + 0.3/ - 0.25
(.500 + .012/ - .010)
4.0 ± 0.3
DIA.
(.157 ± .012)
Popular distribution resistance values listed in
boldface. Special resistances available.
6.35 ± .5
(.250 ± .020)
2.79 ± .25
(.110 ± .010)
2.54
ALL PINS IN-LINE ON CENTER
(.100)
MM
DIMENSIONS:
(INCHES)
2.54
ALL PINS IN-LINE ON CENTER
(.100)
MM
DIMENSIONS:
(INCHES)
1000/REEL/BOX
1000/REEL/BOX
TOP ADJUST
3329U-1
Meets EIA Specification 468.
12.70
REF.
(.500)
6.35
MAX.
(.250)
2
24.38 ± 0.76
(.960 ± .030)
3
1
18 ± .76
(.709 ± .030)
18 + 1.0/ - 0.5
(.709 + .039/ .020)
12.70 + 0.3/ - 0.25
(.500 + .012/ - .010)
6.35 ± .5
(.250 ± .020)
4.0 ± 0.3
DIA.
(.157 ± .012)
Asia-Pacific:
Tel: +886-2 2562-4117 • Email: asiacus@bourns.com
2.79 ± .25
(.110 ± .010)
Europe:
Tel: +36 88 885 877 • Email: eurocus@bourns.com
The Americas:
Tel: +1-951 781-5500 • Email: americus@bourns.com
www.bourns.com
2.54
REV. 08/19
ALL PINS IN-LINE ON CENTER
(.100)
MM
DIMENSIONS:
(INCHES)
1000/REEL/BOX
“Trimpot” is a registered trademark of Bourns, Inc.
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
Unless otherwise expressly indicated in writing, Bourns
®
products and data sheets relating thereto are subject to change
and complete before placing orders for Bourns
®
products.
The characteristics and parameters of a Bourns
®
product set forth in its data sheet are based on laboratory conditions, and
statements regarding the suitability of products for certain types of applications are based on Bourns’ knowledge of typical
requirements in generic applications. The characteristics and parameters of a Bourns
®
®
product with other components
the actual performance of the Bourns
®
®
®
product as meeting the requirements of a particular industry
®
of Bourns products are responsible for ensuring compliance with safety-related requirements and standards applicable to
®
Bourns
®
on a case-by-case basis, use of any Bourns
®
®
®
®
®
Bourns
®
®
standard products that are suitable for use in aircraft
®
standard
the user’s sole risk.
®
and the user for which such Bourns
®
®
custom products shall be negotiated on a case-by-case basis by Bourns
®
also apply to such Bourns custom products.
Users shall not sell, transfer, export or re-export any Bourns
®
Bourns
®
standard products shall
products and Bourns technology and technical data may not under any circumstance be
exported or re-exported to countries subject to international sanctions or embargoes. Bourns
®
products may not, without
®
bilingual versions are available at:
Web Page:
http://www.bourns.com/legal/disclaimers-terms-and-policies
PDF:
http://www.bourns.com/docs/Legal/disclaimer.pdf
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