OM
PL
IA
N
Features
n
Multiturn / Cermet / Industrial / Sealed
T
*R
oH
S
LE
AD
F
RE
E
washing
n
Tape and reel packaging available
n
RoHS compliant* version available
n
For trimmer applications/processing
guidelines, click here
n
Standoffs allow thorough PC board
C
3266 - 1/4 ” Square Trimpot
®
Trimming Potentiometer
Product Dimensions
1.27 ± .25**
(.050 ± .010)
4.50 ± .38
(.177 ± .015)
1.27 ± .38**
(.050 ± .015)
6.71 ± .38
(.264 ± .015)
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 Divider ...................... ±0.02 %
Rheostat ................................ ±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
Ro VE LEA
HS RS D
C ION FRE
OM S E
PL AR
IA E
NT
*
4.50 ± .38**
(.177 ± .015)
7.24 ± .51
TYP.**
(.285 ± .020)
4.88 ± .51**
(.192 ± .020)
6.71 ± .38
TYP.
(.264 ± .015)
ADJ. SLOT
1.78 DIA.
(.070)
.51
WIDE
X
(.020)
1.22 ± .25
.64
DEEP
(.048 ± .010) X
(.025)
.46 ± .03**
(.018 ± .001)
.46 ±.03
DIA.**
(.018 ±.001)
2.54
2.54 (.100)
.76** (.100)
(.030)
1.22 ± .25**
(.048 ± .010)
.46 ± .03**
(.018 ± .001)
1.02
(.040)
1 2 3
7.24 ± .51
(.285 ± .020)
2.54
(.100)
1 2 3
4.50
(.177)
2.54
(.100)
2.54
(.100)
1.02
(.040)
1.27 ± .25**
(.050 ± .010)
0.76 ± .25
(.030 ± .010)
2.16
(.085)
1.27 ± .25**
(.050 ± .010)
1 2 3
4.50 ± .38
(.177 ± .015)
4.31 ± .38
(.170 ± .015)
1.02
(.040)
1.22 ± .25**
(.048 ± .010)
1.22 ± .25**
(.048 ± .010)
.46 ± .03**
(.018 ± .001)
1 2 3
7.24 ± .51
(.850 ± .020)
2.54
(.100)
2.54 ± .25
(.100 ± .010)
2.54 ± .25
(.100 ± .010)
6.78 ± .51
(.267 ± .020)
2.54 ± .25
(.100 ± .010)
4.50 ± .38
(.177 ± .015)
2.54
(.100)
2.16
(.085)
1.02
(.040)
1.27 ± .25
(.050 ± .010)
How To Order
1 2 3
2.54
(.100)
2.54
(.100)
1.02
(.040)
1.22 ± .25
(.048 ± .010)
.46 ± .03**
(.018 ± .001)
2.54
(.100)
.76
(.030)
**Common dimensions
MM
DIMENSIONS:
(INCHES)
0.25
TOLERANCES: ±
EXCEPT WHERE NOTED
(.010)
2
CCW
WIPER
1
CLOCKWISE
*RoHS Directive 2002/95/EC Jan. 27, 2003 including annex and RoHS Recast 2011/65/EU June 8, 2011.
†“Fluorinert” is a registered trademark of 3M Co.
Specifications are subject to change without notice.
The device characteristics and parameters in this data sheet can and do vary in different applications and actual device performance may vary over time.
Users should verify actual device performance in their specific applications.
3
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.
Tape and reel material meets Antistatic ANSI/
ESD 5541-2003 packaging standards.
3266 W - 1 - 103 __ LF
CW
8.9 +.76 /- 0.5
(.035 +.030/-.020)
3
2
1
18 ± .76
(.709 ± .030)
18 +1.0/-0.5
(709 +.040/-.020)
12.7 +0.3/-0.25
(.500 +.012/- .010)
4.0 ± .03
(.157 ± .001)
DIA.
4.32 ± .38
(.170 ± .015)
3266 - 1/4 ” Square Trimpot
®
Trimming Potentiometer
Standard Resistance Table
Resistance
(Ohms)
10
100
200
500
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
Resistance
Code
100
101
201
501
102
202
502
103
203
253
503
104
204
254
504
105
2.54
ALL PINS IN-LINE ON CENTER
(.100)
MM
DIMENSIONS:
(INCHES)
2.16 ± .25
(.085 ± .010)
.43 ± .05
DIA. TYP.
(.017 ± .002)
Packaging Specifications
1000/REEL/BOX
4.01 ± .71
(.158 ± .028)
24.9 ± .76
(.980 ± .030)
8.9 +.76 /- 0.5
(.035 +.030/-.020)
12.70
REF.
(.500)
4.01 ± .71
(.158 ± .028)
12.70
(.500) REF.
8.9 +.76 /-.5
(.035 +.030/-.020)
3
2
1
18 ± .76
(.709 ± .030)
3
2
1
25.9 ± 0.76
(1.020 ± .030)
18 ± .76
(.709 ± .030)
18 +1.0/-0.5
(709 +.040/-.020)
12.7 +0.3/-0.25
(.500 +.012/-.010)
4.0 ± .03
(.157 ± .001)
DIA.
18 +1.0/-0.5
(709 +.040/-.020)
12.7 +0.3/-0.25
(.500 +.012/- .010)
4.0 ± .03
(.157 ± .001)
DIA.
Popular distribution resistance values listed in
boldface. Special resistances available.
4.32 ± .38
(.170 ± .015)
4.32 ± .38
(.170 ± .015)
2.16 ± .25
(.085 ± .010)
2.54
ALL PINS IN-LINE ON CENTER
(.100)
MM
DIMENSIONS:
(INCHES)
2.54
ALL PINS IN-LINE ON CENTER
(.100)
MM
DIMENSIONS:
(INCHES)
2.16 ± .25
(.085 ± .010)
.43 ± .05
DIA. TYP.
(.017 ± .002)
1000/REEL/BOX
1000/REEL/BOX
4.01 ± .71
(.158 ± .028)
Meets EIA Specification 468.
12.70
(.500) REF.
DIMENSIONS:
MM
(INCHES)
8.9 +.76 /-.5
(.035 +.030/-.020)
3
2
1
25.9 ± 0.76
(1.020 ± .030)
18 ± .76
(.709 ± .030)
18 +1.0/-0.5
(709 +.040/-.020)
12.7 +0.3/-0.25
(.500 +.012/-.010)
4.0 ± .03
(.157 ± .001)
DIA.
4.32 ± .38
(.170 ± .015)
2.16 ± .25
(.085 ± .010)
2.54
ALL PINS IN-LINE ON CENTER
(.100)
MM
DIMENSIONS:
(INCHES)
1000/REEL/BOX
REV. 05/16
“Trimpot” is a registered trademark of Bourns, Inc.
Specifications are subject to change without notice.
The device characteristics and parameters in this data sheet can and do vary in different applications and actual device performance may vary over time.
Users should verify actual device performance in their specific applications.
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