Features
■ Multiturn / Cermet / Industrial / Sealed
■ Standoffs allow thorough PC board
washing
■ Tape and reel packaging available
(see page 70 for details)
■ Patent #4427966 drive mechanism
3266 - 1/4” Square Trimming Potentiometer
6.35
(.250)
3266W
Common Dimensions
3266Y
1.52 ± .38
(.060 ± .015)
*
Electrical Characteristics
4.32
(.170)
1.52 ± .38
(.060 ± .015)
Standard Resistance Range
*
6.35
(.250)
....................................10 to 1 megohm
(see standard resistance table)
Resistance Tolerance .............±10% std.
Absolute Minimum Resistance
...............................1% or 2 ohms max.
(whichever is greater)
Contact Resistance Variation
............................3.0% or 3 ohms max.
(whichever is greater)
TYP.
*
ADJ. SLOT
1.02
(.040)
1.78
(.070)
DIA.
4.32 ± .38
(.170 ± .015)
*
.56
(.022)
1.02
(.040)
WIDE
X
X
6.85 ± .51
(.270 ± .020)
1.02
(.040 )
TYP.
*
1
2 3
.64
DEEP
(.025)
6.85 ± .51
(.270 ± .020)
.38
4.78 ± .38
(.188 ± .015)
*
0.38
(.015)
MIN.
1
2 3
(.015)
2.54
(.100)
4.32
Adjustability
.46 ± .03
(.018 ± .001)
2.54
(.100)
DIA.
*
(.170)
Voltage ......................................±0.02%
Resistance ................................±0.05%
Resolution.....................................Infinite
Insulation Resistance ................500 vdc.
1,000 megohms min.
2.54
(.100)
2.54
(.100)
3.18
(.125)
2.16
(.085)
.76*
(.030)
2.54
(.100)
3266Z
1.52 ± .38
6.85 ± .51
(.270 ± .020)
*
1.02
(.040)
(.060 ± .015)
Dielectric Strength
Sea Level ..................................600 vac
80,000 Feet...............................250 vac
Effective Travel..................12 turns nom.
3266P
4.32
(.170)
1.02 ± 0.25
(.040 ± .010)
1
2
3
.76
(.030)
4.32 ± .38
(.170 ± .015)
1.02
Environmental Characteristics
(.040)
0.38
MIN.
1.02
(.040)
Power Rating (300 volts max.)
1.02
(.040)
(.015)
2.54
(.100)
1
2 3
70°C .......................................0.25 watt
150°C ..........................................0 watt
Temperature Range ......-55°C to +150°C
Temperature Coefficient .....±100ppm/°C
Seal Test ........................85°C Fluorinert*
Humidity........MIL-STD-202 Method 103
96 hours (2% ∆TR, 10 Megohms IR)
Vibration............30G (1% ∆TR; 1% ∆VR)
Shock..............100G (1% ∆TR; 1% ∆VR)
Load Life ....1,000 hours 0.25 watt 70°C
(3% ∆TR; 3% CRV)
2.54
(.100)
6.85 ± .51
(.270 ± .020)
2.54
(.100)
.76
(.030)
2.54
(.100)
4.32
(.170)
2.54
(.100)
2.16
3.18
(.125)
3266X
(.085)
1.52
(.060)
1.02
(.040)
WIPER
2
Rotational Life ........................200 cycles
(4% ∆TR; 3% or 3 ohms,
CW
CCW
3
1
1.02
(.040)
1
2 3
CLOCKWISE
whichever is greater, CRV)
.38
(015)
MIN.
*
2.54
(.100)
Standard Resistance Table
Physical Characteristics
2.54
(.100)
Resistance
(Ohms)
Resistance
Code
Torque .............................3.0 oz-in. max.
Mechanical Stops..................Wiper idles
Terminals ........................Solderable pins
Weight ......................................0.015 oz.
Marking ...........................Manufacturer’s
trademark, resistance code,
.76
(.030)
2.54
(.100)
10
100
200
500
101
201
501
102
202
502
103
203
253
503
104
204
254
504
105
20
50
1.02
(.040)
100
200
500
Common dimensions
*
wiring diagram, date code,
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
TOLERANCES: ± 0.25 (.010) EXCEPT WHERE NOTED
manufacturer’s model
METRIC
(INCHES)
number and style
DIMENSIONS ARE:
Wiper ...........Positioned at 50% nominal
Flammability...........................U.L. 94V-0
Standard Packaging .....50 pcs. per tube
Adjustment Tool ..............................H-90
How to Order
3266 W - 1 - 103
Model
Style
*”FLUORINERT” IS A REGISTERED TRADEMARK OF 3M CO.
Standard or Modified
Product Indicator
Popular values listed in boldface. Special
resistances available.
-1 = Standard Product
SHADED AREAS TYPICALLY NOT STOCKED BY
DISTRIBUTORS AND NOT RECOMMENDED FOR NEW
DESIGNS.
Resistance Code
Consult factory for other available options.
Specifications are subject to change without notice.
20
BOURNS [ BOURNS ELECTRONIC SOLUTIONS ]
