M
PL
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Features
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Single-turn / Wirewound / Industrial /
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■
■
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■
For trimmer applications/processing
T
Sealed
Industrial wirewound
1.0 watt power rating at 70 °C
Available with a thumbwheel and
screwdriver slot adjustment
RoHS compliant*
*R
oH
S
CO
guidelines,
click here
3345 - 1/2 ” Round Trimpot
®
Trimming Potentiometer
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
Product Dimensions
3345P
ADJ. SLOT
5.97
.89
.64
LONG X
DEEP X
WIDE
(.235)
(.035)
(.025)
Standard Resistance Table
Resistance
(Ohms)
10
20
50
100
200
500
1,000
2,000
5,000
10,000
20,000
50,000
Resistance
Code
100
200
500
101
201
501
102
202
502
103
203
503
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
DIA.
11.43 ± .38
(.450 ± .015)
5.97 ± .38
(.235 ± .015)
MIN. STANDOFFS
.38
(.015)
2.54
(.10)
2.54
(.10)
1
2
3
5.08
(.200)
MIN. LENGTH
2.54
(.10)
.71 ± .08
(.028 ± .003)
DIA.
Special resistances available from 10 to
50K ohms.
How To Order
3345P THUMBWHEEL
8.00 ± .38
(.315 ± .015)
3345 P - 1 - 502 T
Model
Style
12.57 ± .38
(.495 ± .015)
DIA.
11.43 ± .38
(.450 ± .015)
Standard Product
Resistance Code
Optional Suffix Letter
T = Thumb Wheel
Consult factory for other available options.
5.97 ± .38
(.235 ± .015)
3345W
.686 ± .38
(.270 ± .015)
13.34 ± .38
(.525 ± .015)
3
2
1
2
2.54
(.10)
2.54
(.10)
CCW
WIPER
1
CLOCKWISE
3
CW
DIA.
11.43 ± .38
(.450 ± .015)
12.7
(.500)
1.09 ± .38
(.043 ± .015)
MIN.
DIMENSIONS:
2.54
(.10)
MM
(INCHES)
EXCEPT WHERE NOTED
TOLERANCES:
0.25
(.010)
3345W THUMBWHEEL
13.97 ± .38
(.550 ± .015)
8.78 ± .38
(.345 ± .015)
1.09 ± .38
(.043 ± .015)
3
2
1
12.57 ± .38 11.93 ± .38
(.495 ± .015) (.450 ± .015)
6.86 ± .38
(.270 ± .015)
REV. 04/14
*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.
Specifications 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 specific applications.
DIY/Open Source Hardware
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