Features
■ For trimmer applications/processing
guidelines, click here
■ Multiturn / Wirewound / Sealed
■ Listed on the QPL for style RT22 per
MIL-R-27208 and RTR22 per
High-Rel MIL-R-39015
■ Panel mount option available
■ RoHS compliant*
3250 - 1/2 ” Square Trimpot® Trimming Potentiometer
Electrical Characteristics
Product Dimensions
How To Order
Standard Resistance Range
3250P
Common Dimensions
(Pin Styles)
3250 L - 1 - 103 M
.................................. 10 to 50K 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.
Model
Style
1.98
(.078)
DIA. THRU
(2 PLACES)
Standard or Modified
Product Indicator
ADJ. SLOT
1.91 .25
(.075 .01)
-1 = Standard Product
DIA.
13.21
TYP.
Resistance Code
(.520)
.ꢀ6
WIDE
(.025)
X
X
Optional Suffix Letter
M = Panel Mount
(Factory Installed)
12.7
TYP.
.51
DEEP
(.020)
(.500)
.89
(.035)
TYP.
2.56
(.100)
2.56
(.100)
ꢀ.35
Consult factory for other available options.
Dielectric Strength
1.78
TYP.
Sea Level............................. 1,000 vac
80,000 Feet............................ 400 vac
Adjustment Travel.............25 turns nom.
(.070)
5.59
(.220)
Standard Resistance Table
.71 .08
(.028 .003)
DIA. TYP.
Nominal
(.250)
3
Resistance
(Ohms)
10
Resistance
Code
100
Resolution
(Percent)
1.30
12.7
(.500)
TYP.
2
Environmental Characteristics
1
Power Rating @ 85 °C...............1.0 watt
Power Rating @ 150 °C................0 watt
Temperature Range...-65 °C to +150 °C
Temperature Coefficient ..... 50 ppm/°C
Seal Test...................... 85 °C Fluorinert†
(pin styles only)
Humidity .......MIL-STD-202 Method 106
(2 ꢀ ΔTR; 100 Megohms IR)
Vibration ......................................... 30 G
(1 ꢀ ΔTR; 0.5 ꢀ + resolution ΔVR)
Shock ........................................... 100 G
(1 ꢀ ΔTR; 0.5 ꢀ + resolution ΔVR)
Load Life
20
200
1.00
0.80
50
500
2.56
(.100)
13.33 .ꢀ6
(.525 .025)
100
101
0.90
ꢀ.35
(.250)
200
201
0.70
500
501
0.60
3250W
1,000
2,000
5,000
10,000
20,000
25,000
50,000
102
0.40
2.79
(.110)
202
0.30
3
2
1
502
0.25
103
0.19
203
0.16
253
503
0.14
0.13
ꢀ.35
(.250)
2.56
(.100)
2.56
(.100)
Popular values listed in boldface. Special
resistances available.
3250W-66
2.79
(.110)
3
2
1
............1,000 hours 1.0 watt @ 85 °C
(2 ꢀ ΔTR; 500 ohms ENR)
RED
WIPER
2
Rotational Life .......................200 cycles
(2 ꢀ ΔTR; 500 ohms ENR)
GREEN
CW
YELLOW
CCW
3
1
ꢀ.35
(.250)
CLOCKWISE
2.56
(.100)
2.56
(.100)
Physical Characteristics
MM
(INCHES)
DIMENSIONS:
0.25
3250L
Torque.............................5.0 oz-in. max.
Mechanical Stops.................Wiper idles
Terminals..Solderable printed circuit pins
Flexible leads (7 strands of 30 AWG)
Weight .......................................0.06 oz.
Machine Screw Mounting
Torque ..........................12 oz-in. max.
Marking.........Manufacturer’s trademark,
resistance code, terminal numbers,
date code, manufacturer’s model
number and style
TOLERANCES:
EXCEPT WHERE NOTED
13.21
(.520)
(.010)
TYP.
2.3ꢀ
(.093)
DIA. THRU
(2 PLACES)
.89
TYP.
(.035)
12.70
TYP.
(.500)
1.60
(.055)
Wiper ...............50 ꢀ (Actual TR) 10 ꢀ
Flammability ..........................U.L. 94V-0
Standard Packaging
152.6
(ꢀ.00)
LENGTH
MIN.
6.75
(.187)
P&W Styles ...............25 pcs. per tube
L Style ........................25 pcs. per bag
Adjustment Tool..............................H-90
1.52
TYP.
12.7
(.500)
(.0ꢀ0)
REV. 01/12
*RoHS Directive 2002/95/EC Jan. 27, 2003 including annex and RoHS Recast 2011/ꢀ5/EU June 8, 2011.
“Trimpot” is a registered trademark of Bourns, Inc.
†“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.
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