3345 Datasheet, PDF (1/1 Pages) Bourns Electronic Solutions – 1/2 ”“Round Trimming Potentiometer

*RoHS ^COMPLIANT
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*
3345 - 1/2 ”“Round 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 % ∆TR, 10 megohms IR)
Vibration.........30 G (1 % ∆TR; 1 % ∆VR)
Shock...........100 G (1 % ∆TR; 1 % ∆VR)
Load Life
..................1,000 hours, 1 watt @ 70 °C
Rotational Life ........................200 cycles
(2 % ∆TR; 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
(.235)
LONG
X
.89
(.035)
DEEP
X
.64
(.025)
WIDE
DIA.
11.43 ± .38
(.450 ± .015)
5.97 ± .38
(.235 ± .015)
MIN. STANDOFFS
.38
(.015)
2.54
(.10)
2.54
(.10)
5.08
(.200)
MIN. LENGTH
2
1
3
2.54
(.10)
.71 ± .08
(.028 ± .003)
DIA.
3345P THUMBWHEEL
8.00 ± .38
(.315 ± .015)
12.57 ± .38
(.495 ± .015)
DIA.
11.43 ± .38
(.450 ± .015)
5.97 ± .38
(.235 ± .015)
3345W
13.34 ± .38
(.525 ± .015)
DIA.
11.43 ± .38
(.450 ± .015)
.686 ± .38
(.270 ± .015)
3
2
1
2.54
(.10)
2.54
(.10)
MIN.(1.520.70)
2.54
1.09 ± .38
(.10)
(.043 ± .015)
3345W THUMBWHEEL
13.97 ± .38
(.550 ± .015)
8.78 ± .38
(.345 ± .015)
1.09 ± .38
(.043 ± .015)
12.57 ± .38 11.93 ± .38
(.495 ± .015) (.450 ± .015)
3
2
1
6.86 ± .38
(.270 ± .015)
TOLERANCES:
± .25
(± .010)
EXCEPT WHERE NOTED
DIMENSIONS:
MM
(INCHES)
09/04
*RoHS Directive 2002/95/EC Jan 27 2003 including Annex.
†“Fluorinert” is a registered trademark of 3M Co.
Specifications are subject to change without notice.
Customers should verify actual device performance in their specific applications.
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
Special resistances available from 10 to
50K ohms.
How To Order
3345 P - 1 - 502 T
Model
Style
Standard Product
Resistance Code
Optional Suffix Letter
T = Thumb Wheel
Consult factory for other available options.
2 ^WIPER
CCW ₁
CLOCKWISE
3 CW