Features
■ Single-turn / Wirewound / Industrial /
Sealed
■ Industrial wirewound
■ 1.0 watt power rating at 70 °C
■ Available with a thumbwheel and
screwdriver slot adjustment
■ RoHS compliant*
■ For trimmer applications/processing
guidelines,
click here
3345 - 1/2 ” Round Trimpot
®
Trimming Potentiometer
*RoHS Directive 2002/95/EC Jan. 27, 2003 including annex and RoHS Recast 2011/65/EU June 8, 2011.
“Trimpot” is a registered trademark of Bourns, Inc.
†”Fluorinert” is a registered trademark of 3M Co.
Specifi cations are subject to change without notice.
The device characteristics and parameters in this data sheet can and do vary in different applications and actual device performance may vary over time.
Users should verify actual device performance in their specifi c applications.
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 Coeffi cient ........ ±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
Product Dimensions
DIMENSIONS:
MM
(INCHES)
TOLERANCES:
0.25
EXCEPT WHERE NOTED
(.010)
1
3
CW
CLOCKWISE
CCW
2
WIPER
How To Order
3345 P - 1 - 502 T
Model
Style
Standard Product
Resistance Code
Optional Suffi x Letter
T = Thumb Wheel
Consult factory for other available options.
Standard Resistance Table
Nominal
Resistance Resistance Resolution
(Ohms) Code (Percent)
10 100 0.94
20 200 0.76
50 500 0.58
100 101 0.49
200 201 0.49
500 501 0.38
1,000 102 0.30
2,000 202 0.24
5,000 502 0.18
10,000 103 0.14
20,000 203 0.13
50,000 503 0.12
REV. 04/14
Special resistances available from 10 to
50K ohms.
3345P
.71 ± .08
(.028 ± .003)
1.09 ± .38
(.043 ± .015)
8.78 ± .38
(.345 ± .015)
2.54
(.10)
5.97 ± .38
(.235 ± .015)
12.7
(.500)
2.54
(.10)
2.54
(.10)
.38
(.015)
MIN. STANDOFFS
DIA.
1.09 ± .38
(.043 ± .015)
13
2
1
3
2
1
3
2
2.54
(.10)
2.54
(.10)
2.54
(.10)
11.43 ± .38
(.450 ± .015)
DIA.
11.43 ± .38
(.450 ± .015)
DIA.
MIN.
12.57 ± .38
(.495 ± .015)
12.57 ± .38
(.495 ± .015)
11.43 ± .38
(.450 ± .015)
DIA.
11.93 ± .38
(.450 ± .015)
6.86 ± .38
(.270 ± .015)
.686 ± .38
(.270 ± .015)
8.00 ± .38
(.315 ± .015)
13.34 ± .38
(.525 ± .015)
13.97 ± .38
(.550 ± .015)
5.08
(.200)
MIN. LENGTH
5.97 ± .38
(.235 ± .015)
ADJ. SLOT LONG X DEEP X WIDE
5.97
(.235)
.89
(.035)
.64
(.025)
3345P THUMBWHEEL
3345W
3345W THUMBWHEEL
*RoHS COMPLIANT
