.46 ±.03
(.018 ±.001)
123
3266W
Common Dimensions 4.50 ±.38
(.177 ±.015)
.46 ±.13
(.018 ±.005)
1.24 ±.25
(.049 ±.010)
.46 ±.13
(.018 ±.005)
123
123
3266P
3266X
123
3.18
(.125)
2.16
(.085)
3266Y
4.50 ±.38
(.177 ±.015)
123
4.32
(.170)
4.50 ±.38
(.177 ±.015)
0.38
(.015)
3266Z
TYP.
6.71 ±.38
(.264 ±.015)
6.71 ±.38
(.264 ±.015)
1.22 ±.25
(.048 ±.010)
1.22 ±.25
(.048 ±.010)
1.02
(.040 )
4.32
(.170)
4.50 ±.38**
(.177 ±.015)
4.78 ±.38**
(.188 ±.015)
4.42 ± .51
(.174 ±.020)
7.24 ±.51
(.285 ±.020)
6.85 ±.51
(.270 ±.020)
TYP.**
1.22 ±.25
(.048 ±.010)
.76**
(.030)
1.22 ±.25
(.048 ±.010)
1.02
(.040)
1.02
(.040)
1.02
(.040)
2.54
(.100)
2.54
(.100) 2.54
(.100)
2.54
(.100)
1.02
(.040)
2.54
(.100)
2.54 ± .25
(.100 ± .010)
2.54 ± .25
(.100 ± .010)
2.54 ± .25
(.100 ± .010)
2.54
(.100) 2.54
(.100)
2.54
(.100)
2.54
(.100)
2.54
(.100)
.76
(.030)
MIN.**
1.24 ±.25**
(.049 ±.010)
1.24 ±.25**
(.049 ±.010)
7.24 ±.51
(.285 ±.020)
1.24 ±.25**
(.049 ±.010)
6.85 ±.51
(.270 ±.020)
3.18
(.125)
2.16
(.085)
MIN.
0.46 ±.13
(.018 ±.005)
MIN.
1.02 ±.25
(.040 ±.010)
6.48 ±.51
(.255 ±.020)
0.76 ± .25
(.030 ± .010)
DIA.**
ADJ. SLOT
1.78
(.070)
.51
(.020)
.64
(.025)
WIDE
X
XDEEP
DIA.
1.52
(.06)
Features
■ Multiturn / Cermet / Industrial / Sealed
■ Standoffs allow thorough PC board
washing
■ Tape and reel packaging available
■ RoHS compliant* version available
■ For trimmer applications/processing
guidelines,
click here
3266 - 1/4 ” Square Trimpot® Trimming Potentiometer
*RoHS Directive 2002/95/EC Jan 27 2003 including Annex.
†“Fluorinert” is a registered trademark of 3M Co.
Specifi cations are subject to change without notice.
Customers should verify actual device performance in their specifi c applications.
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 ................................... Infi nite
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 Coeffi cient ... ±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
13CW
CLOCKWISE
CCW
2WIPER
How To Order
3266 W - 1 - 103 __ LF
Model
Style
Standard or Modifi ed
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.
TOLERANCES: ± 0.25 EXCEPT WHERE NOTED
(.010)
DIMENSIONS: MM
(INCHES)
**Common dimensions
*RoHS COMPLIANT
“Trimpot” is a registered trademark of Bourns, Inc.
Specifi cations are subject to change without notice.
Customers should verify actual device performance in their specifi c applications.
3266 - 1/4 ” Square Trimpot® Trimming Potentiometer
Standard Resistance Table
Resistance Resistance
(Ohms) Code
10 100
20 200
50 500
100 101
200 201
500 501
1,000 102
2,000 202
5,000 502
10,000 103
20,000 203
25,000 253
50,000 503
100,000 104
200,000 204
250,000 254
500,000 504
1,000,000 105
Popular distribution resistance values listed in
boldface. Special resistances available.
Packaging Specifi cations
SIDE ADJUST
3266Z-1
12.70
(.500)
18 ± .76
(.709 ± .030)
12.7 + 0.3/ - 0.25
(.500 + .012/ - .010)
18 + 1.0/ - 0.5
(709 + .040/ - .020)
24.9 + .76
(.980 + .030)
4.0 ± .03
(.157 ± .001)
3.81 ± .71
(.150 ± .028)
1
2
3
4.32 ± .38
(.170 ± .015)
2.16 ± .25
(.085 ± .010)
.43 ± .05
(017 ± .002)
8.9 + .76 /- .5
(.035 + .030/ .020)
REF.
DIA.
DIA. TYP.
ALL PINS IN-LINE ON CENTER
DIMENSIONS:
1000/REEL/BOX
2.54
(.100)
MM
(INCHES)
TOP ADJUST
3266Y-1
12.70
(.500)
18 ± .76
(.709 ± .030)
4.0 ± .03
(.157 ± .001)
3.81 ± .71
(.150 ± .028)
1
2
325.9 ± 0.76
(1.020 ± .030)
18 + 1.0/ - 0.5
(709 + .040/ - .020)
12.7 + 0.3/ - 0.25
(.500 + .012/ - .010)
4.32 ± .38
(.170 ± .015)
2.16 ± .25
(.085 ± .010)
3.81 ± .71
(.150 ± .028)
REF.
DIA.
8.9 + .76 /- .5
(.035 + .030/ .020)
ALL PINS IN-LINE ON CENTER
DIMENSIONS:
1000/REEL/BOX
2.54
(.100)
MM
(INCHES)
Meets EIA Specifi cation 468.
DIMENSIONS: MM
(INCHES)
REV. 08/10
