PL
IA
NT
Features
■
Multiturn / Cermet / Industrial / Sealed
■
Standoffs allow thorough PC board
*R
oH
S
CO
M
washing
■
Tape and reel packaging available
■
RoHS compliant* version available
3266 - 1/4 ” Square Trimpot
®
Trimming Potentiometer
Electrical Characteristics
Standard Resistance Range
........................10 ohms 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 +125 °C
Temperature Coefficient ... ±100 ppm/°C
Seal Test ......................85 °C Fluorinert†
Humidity .......MIL-STD-202 Method 103
96 hours (2 %
ΔTR,
10 Megohms IR)
Vibration ....... 30 G (1 %
ΔTR;
1 %
ΔVR)
Shock ......... 100 G (1 %
ΔTR;
1 %
ΔVR)
Load Life...1,000 hours 0.25 watt 70 °C
(3 %
ΔTR;
3 % CRV)
Rotational Life .......................200 cycles
(4 %
ΔTR;
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
Product Dimensions
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)
(.100)
.76**
(.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)
How To Order
3266 W - 1 - 103 __ LF
1.22 ±.25
(.048 ±.010)
.46 ±.13
MIN.**
(.018 ±.005)
2.54
(.100)
.76
(.030)
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.
1 2 3
2.54
(.100)
2.54
(.100)
1.02
(.040)
**Common dimensions
DIMENSIONS:
TOLERANCES: ±
0.25
(.010)
MM
(INCHES)
EXCEPT WHERE NOTED
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.
BOURNS [ BOURNS ELECTRONIC SOLUTIONS ]
