Features
n For trimmer applications/processing
guidelines, click here
n Single-turn / Wirewound / Industrial /
Sealed
n Industrial wirewound
n 1.0 watt power rating at 70 °C
n Available with a thumbwheel and
screwdriver slot adjustment
n RoHS compliant*
Electrical Characteristics
Standard Resistance Range
........................................10 to 50K ohms
(see standard resistance table)
Resistance Tolerance.................. ±5 % std.
(tighter tolerance available)
Absolute Minimum Resistance
...........................1.0 % or 0.5 ohms max.
(whichever is greater)
Noise......................... 100 ohms ENR max.
Resolution
.................See standard resistance table
1,000 megohms min.
Dielectric Strength
Sea Level.................................1,500 vac
70,000 Feet.................................350 vac
Insulation Resistance....................500 vdc.
100 megohms min.
Adjustment Angle.......................280 ° nom.
Environmental Characteristics
Power Rating
70 °C..............................................1 watt
150 °C............................................0 watt
Temperature Range........-55 °C to +150 °C
Temperature Coefficient......... ±50 ppm/°C
Seal Test..........................85 °C Fluorinert†
Humidity............MIL-STD-202 Method 106
(1 % ΔTR, 10 megohms IR)
Vibration........... 30 G (1 % ΔTR; 1 % ΔVR)
Shock............. 100 G (1 % ΔTR; 1 % ΔVR)
Load Life....... 1,000 hours, 1 watt @ 70 °C
Rotational Life............................ 200 cycles
(2 % ΔTR; 500 ohms ENR)
Physical Characteristics
Mechanical Angle......................310 ° nom.
Torque..................................5.0 oz-in. max.
Stop Strength.........................15 oz-in. min.
Terminals............................ Solderable pins
Weight.............................................0.04 oz.
Marking............................... Manufacturer’s
trademark, resistance code,
wiring diagram, date code,
manufacturer’s model number
and style
Standard Packaging........ 100 pcs. per bag
3345 - 1/2 ” Round Trimpot® Trimming Potentiometer
Product Dimensions
3345P
ADJ. SLOT
Standard Resistance Table
5.97
.89
.64
LONG X
DEEP X
WIDE
(.235)
(.035)
(.025)
DIA.
11.43 ± .38
(.450 ± .015)
5.97 ± .38
(.235 ± .015)
2.54
(.10)
2.54
(.10)
MIN. STANDOFFS
.38
(.015)
1
2
3
2.54
(.10)
.71 ± .08
(.028 ± .003)
DIA.
5.08
(.200)
MIN. LENGTH
8.00 ± .38
(.315 ± .015)
Style
5.97 ± .38
(.235 ± .015)
3345W
DIA.
3345 P - 1 - 502 T
Model
11.43 ± .38
DIA.
(.450 ± .015)
Standard Product
Resistance Code
Optional Suffix Letter
T = Thumb Wheel
Consult factory for other available options.
6.86 ± .38
(.270 ± .015)
13.34 ± .38
(.525 ± .015)
2
3
11.43 ± .38
(.450 ± .015)
2
Nominal
Resolution
(Percent)
0.94
0.76
0.58
0.49
0.49
0.38
0.30
0.24
0.18
0.14
0.13
0.12
Special resistances available from 10 to
50K ohms.
How To Order
3345P THUMBWHEEL
12.57 ± .38
(.495 ± .015)
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
50,000
503
2.54
(.10)
2.54
(.10)
CCW
WIPER
3
1
CW
CLOCKWISE
1
MIN.
12.7
(.500)
2.54
(.10)
1.09 ± .38
(.043 ± .015)
DIMENSIONS:
TOLERANCES:
MM
(INCHES)
0.25
EXCEPT WHERE NOTED
(.010)
3345W THUMBWHEEL
8.78 ± .38
(.345 ± .015)
1.09 ± .38
(.043 ± .015)
13.97 ± .38
(.550 ± .015)
3
2
1
12.57 ± .38 11.93 ± .38
(.495 ± .015) (.450 ± .015)
6.86 ± .38
(.270 ± .015)
REV. 02/20
WARNING Cancer and Reproductive Harm
www.P65Warnings.ca.gov
*RoHS Directive 2015/863, Mar 31, 2015 and Annex.
“Trimpot” is a registered 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.
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PDF: http://www.bourns.com/docs/Legal/disclaimer.pdf
C1753 05/17/18R
