Features
■ Multiturn / Wirewound / Industrial / Sealed
■ Listed on the QPL for style RT26 per
MIL-R-27208
■ RoHS compliant*
■ For trimmer applications/processing
guidelines, click here
3260 - 1/4 ” Square Trimpot
®
Trimming Potentiometer
*RoHS Directive 2002/95/EC Jan. 27, 2003 including annex and RoHS Recast 2011/65/EU June 8, 2011.
“Trimpot” is a registered trademark of Bourns, Inc.
†“Fluorinert” is a registered trademark of 3M Co.
Specifi cations 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 specifi c applications.
Electrical Characteristics
Standard Resistance Range
.................................. 10 to 25K ohms
(see standard resistance table)
Resistance Tolerance ............. ±5 % std.
(tighter tolerance available)
Absolute Minimum Resistance
.......................... 0.1 % or 1 ohm max.
(whichever is greater)
Noise .....................100 ohms ENR max.
Resolution ............. See resistance table
Insulation Resistance ...............500 vdc.
1,000 megohms min.
Dielectric Strength
Sea Level................................ 600 vac
80,000 Feet ............................ 250 vac
Adjustment Angle .............11 turns nom.
Environmental Characteristics
Power Rating
85 °C ....................................0.25 watt
150 °C .......................................0 watt
Temperature Range ... -65 °C to +150 °C
Temperature Coeffi cient ..... ±70 ppm/°C
Seal Test ......................85 °C Fluorinert†
Humidity .......MIL-STD-202 Method 106
(2 % ΔTR, 100 Megohms IR)
Vibration ................. 30 G (1 % ΔTR; 1%
+ resolution ΔVR)
Shock ........................................... 100 G
(1 % ΔTR; 1 % + resolution ΔVR)
Load Life 1,000 hours 0.25 watt @ 85 °C
(2 % ΔTR; 500 ohms ENR)
Rotational Life .......................200 cycles
(2 % ΔTR; 500 ohms ENR)
Physical Characteristics
Torque .............................3.0 oz-in. max.
Mechanical Stops ................. Wiper idles
Terminals Solderable printed circuit 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 ............................UL 94V-0
Standard Packaging .....50 pcs. per tube
Adjustment Tool ..............................H-90
Product Dimensions
1
3
CW
CLOCKWISE
CCW
2
WIPER
How To Order
3260 H - 1 - 502
Model
Style
Standard or Modifi ed
Product Indicator
-1 = Standard Product
Resistance Code
Consult factory for other available options.
REV. 04/14
TOLERANCES: ±
0.25
EXCEPT WHERE NOTED
(.010)
DIMENSIONS:
MM
(INCHES)
3260H
Common Dimensions
.89
(.035)
1.27
(.050)
6.35 ± .51
(.250 ± .020)
4.78 ± .38
(.188 ± .015)
.76
(.030)
1.02 ± .38
(.040 ± .015)
4.32 ± .38
(.170 ± .015)
.41 ± .03
(.016 ± .001)
123
123
.89
(.035)
6.35 ± .51
(.250 ± .020)
6.35 ± .51
(.250 ± .020)
1.27
(.050)
4.32 ± .38
(.170 ± .015)
2.54
(.100)
2.54
(.100)
2.54
(.100)
DIA.
1.27
(.050)
1.27
(.050)
ADJ. SLOT
1.78
(.070)
.51
(.020)
.51
(.020)
WIDE
X
X
DEEP
DIA.
3260W
Standard Resistance Table
Nominal
Resistance Resistance Resolution
(Ohms) Code (Percent)
10 100 1.90
20 200 1.50
50 500 1.23
100 101 1.00
200 201 0.94
500 501 0.58
1,000 102 0.50
2,000 202 0.45
5,000 502 0.34
10,000 103 0.29
20,000 203 0.28
25,000 253 0.23
Popular values listed in boldface. Special
resistances available.
*RoHS COMPLIANT
