TYP.
MIN.
MIN.
ADJ. SLOT
DIA.
3266 - 1/4 ” Square Trimming Potentiometer
*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.
Features
■ Multiturn / Cermet / Industrial / Sealed
■ Standoffs allow thorough PC board
washing
■ Tape and reel packaging available
■ Patent #4427966 drive mechanism
■ RoHS compliant* version available
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
