oH
VE S CO
AV R M
AI SIO PL
LA N IA
BL S NT
E
Features
■
Multiturn
/ Cermet / Industrial / Sealed
■
Standoffs allow thorough PC board
washing
■
Tape and reel packaging available
■
Patent #4427966 drive mechanism
■
RoHS compliant* version available
*R
3266 - 1/4 ” Square Trimming Potentiometer
Electrical Characteristics
Standard Resistance Range
....................................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)
Adjustability
Voltage.....................................±0.02 %
Resistance ...............................±0.05 %
Resolution.....................................Infinite
Insulation Resistance ................500 vdc.
1,000 megohms min.
Dielectric Strength
Sea Level ..................................600 vac
80,000 Feet...............................250 vac
Effective Travel..................12 turns nom.
Environmental Characteristics
Power Rating (300 volts max.)
70 °C ......................................0.25 watt
150 °C .........................................0 watt
Temperature Range ....-55 °C to +150 °C
Temperature Coefficient ....±100 ppm/°C
Seal Test........................85 °C Fluorinert
†
Humidity........MIL-STD-202 Method 103
96 hours (2 %
∆TR,
10 Megohms IR)
Vibration.........30 G (1 %
∆TR;
1 %
∆VR)
Shock...........100 G (1 %
∆TR;
1 %
∆VR)
Load Life ...1,000 hours 0.25 watt 70 °C
(3 %
∆TR;
3 % CRV)
Rotational Life ........................200 cycles
(4 %
∆TR;
3 % or 3 ohms,
whichever is greater, CRV)
Physical Characteristics
Torque .............................3.0 oz-in. max.
Mechanical Stops..................Wiper idles
Terminals ........................Solderable pins
Weight ......................................0.015 oz.
Marking ...........................Manufacturer’s
trademark, resistance code,
wiring diagram, date code,
manufacturer’s model
number and style
Wiper................50 % (Actual TR) ±10 %
Flammability ...........................U.L. 94V-0
Standard Packaging .....50 pcs. per tube
Adjustment Tool ..............................H-90
3266W
Common Dimensions
1.24 ±.25**
(.049 ±.010)
3266Y
4.50 ±.38
(.177 ±.015)
6.71 ±.38
TYP.
(.264 ±.015)
ADJ. SLOT
1.78 DIA.
(.070)
.51
WIDE
X
(.020)
1.22 ±.25
.64
(.048 ±.010) X
DEEP
(.025)
1 2 3
.46 ±.13
(.018 ±.005)
.46 ±.03
DIA.**
(.018 ±.001)
2.54
2.54 (.100)
.76** (.100)
(.030)
3266Z
1.02
(.040)
3266P
1.52
(.06)
0.76 ± .25
(.030 ± .010)
1 2 3
4.42 ± .51
(.174 ±.020)
4.32
(.170)
2.54
(.100)
1.24 ±.25**
(.049 ±.010)
6.71 ±.38
(.264 ±.015)
4.50 ±.38**
(.177 ±.015)
7.24 ±.51
TYP.**
(.285 ±.020)
4.78 ±.38**
(.188 ±.015)
1.22 ±.25
(.048 ±.010)
0.46 ±.13
MIN.
(.018 ±.005)
1 2 3
1.02
(.040 )
6.85 ±.51
(.270 ±.020)
2.54
(.100)
3.18
(.125)
7.24 ±.51
(.285 ±.020)
2.54
(.100)
2.16
(.085)
1.24 ±.25**
(.049 ±.010)
4.50 ±.38
(.177 ±.015)
1.02
(.040)
0.38
MIN.
(.015)
1 2 3
1.22 ±.25
(.048 ±.010)
1.02 ±.25
(.040 ±.010)
4.50 ±.38
(.177 ±.015)
6.85 ±.51
(.270 ±.020)
2.54 ± .25
(.100 ± .010)
2.54 ± .25
(.100 ± .010)
6.48 ±.51
(.255 ±.020)
2.54 ± .25
(.100 ± .010)
4.32
(.170)
2.54
(.100)
2.54
(.100)
3266X
1.02
(.040)
1.24 ±.25
(.049 ±.010)
2.16
(.085)
3.18
(.125)
TOLERANCES: ± 0.25 (.010) EXCEPT WHERE NOTED
DIMENSIONS ARE:
MM
(INCHES)
1 2 3
2.54
(.100)
2.54
(.100)
1.02
(.040)
1.22 ±.25
(.048 ±.010)
.46 ±.13
MIN.**
(.018 ±.005)
2.54
(.100)
.76
(.030)
How to Order
3266 W - 1 - 103 __ LF
Model
Style
Standard or Modified
Product Indicator
-1 = Standard Product
Resistance Code
Packaging Designator
Blank = Tube (Standard)
R = Tape and Reel (Z and Y Pin Styles
Only)
A = Ammo Pack (Z and Y Pin Styles Only)
Terminations
LF = 100 % Tin-plated (RoHS compliant)
Blank = 90 % Tin / 10 % Lead-plated
(Standard)
Consult factory for other available options.
**COMMON DIMENSIONS
2
CCW
WIPER
1
CLOCKWISE
3
CW
*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.
DIY/Open Source Hardware
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