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3250_12 Datasheet, PDF (1/1 Pages) Bourns Electronic Solutions – 1/2 ” Square Trimpot® Trimming Potentiometer | |||
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*RoHS COMPLIANT
Features
â Multiturn / Wirewound / Sealed
â Listed on the QPL for style RT22 per
MIL-R-27208 and RTR22 per
High-Rel MIL-R-39015
â Panel mount option available
â RoHS compliant*
â For trimmer applications/processing
guidelines, click here
3250 - 1/2 â Square Trimpot® Trimming Potentiometer
Electrical Characteristics
Standard Resistance Range
.................................. 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.
Dielectric Strength
Sea Level............................. 1,000 vac
80,000 Feet ............................ 400 vac
Adjustment Travel.............25 turns nom.
Environmental Characteristics
Power Rating @ 85 °C ............... 1.0 watt
Power Rating @ 150 °C ................ 0 watt
Temperature Range ... -65 °C to +150 °C
Temperature Coefï¬cient ..... ±50 ppm/°C
Seal Test ...................... 85 °C Fluorinertâ
(pin styles only)
Humidity .......MIL-STD-202 Method 106
(2 % ÎTR; 100 Megohms IR)
Vibration ......................................... 30 G
(1 % ÎTR; 0.5 % + resolution ÎVR)
Shock ........................................... 100 G
(1 % ÎTR; 0.5 % + resolution ÎVR)
Load Life
............ 1,000 hours 1.0 watt @ 85 °C
(2 % ÎTR; 500 ohms ENR)
Rotational Life .......................200 cycles
(2 % ÎTR; 500 ohms ENR)
Physical Characteristics
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.........Manufacturerâs trademark,
resistance code, terminal numbers,
date code, manufacturerâs model
number and style
Wiper ............... 50 % (Actual TR) ±10 %
Flammability ..........................U.L. 94V-0
Standard Packaging
P&W Styles ...............25 pcs. per tube
L Style ........................25 pcs. per bag
Adjustment Tool..............................H-90
Product Dimensions
3250P
Common Dimensions
(Pin Styles)
1.98 DIA. THRU
(.078) (2 PLACES)
ADJ. SLOT
13.21
(.520)
TYP.
12.7
(.500)
TYP.
.89
1.91 ± .25
(.075 ± .01) DIA.
X
.64
(.025)
WIDE
X (..05210)DEEP
(.035)
TYP.
2.54
5.59
(.220)
12.7
1.78
(.070)
TYP.
.71 ± .08
(.028 ± .003) DIA. TYP.
3
(.100)
2.54
(.100)
6.35
(.250)
(.500)
2
TYP.
1
13.33 ± .64
(.525 ± .025)
3250W
6.35
(.250)
23
1
2.54
(.100)
2.79
(.110)
2.54
(.100)
6.35
2.54 (.250)
(.100)
3250W-66
23
1
2.79
(.110)
3250L
2.54
(.100)
6.35
2.54 (.250)
(.100)
13.21
(.520)
TYP.
How To Order
3250 L - 1 - 103 M
Model
Style
Standard or Modiï¬ed
Product Indicator
-1 = Standard Product
Resistance Code
Optional Sufï¬x Letter
M = Panel Mount
(Factory Installed)
Consult factory for other available options.
Standard Resistance Table
Resistance
(Ohms)
10
20
50
100
200
500
1,000
2,000
5,000
10,000
20,000
25,000
50,000
Resistance
Code
100
200
500
101
201
501
102
202
502
103
203
253
503
Nominal
Resolution
(Percent)
1.30
1.00
0.80
0.90
0.70
0.60
0.40
0.30
0.25
0.19
0.16
0.14
0.13
Popular values listed in boldface. Special
resistances available.
RED 2 WIPER
YELLOW 1
CCW
CLOCKWISE
3 GREEN
CW
DIMENSIONS:
TOLERANCES: ±
0.25
(.010)
MM
(INCHES)
EXCEPT WHERE NOTED
2.36 DIA. THRU
(.093) (2 PLACES)
12.70
(.500)
TYP.
.89
(.035)
TYP.
4.75
(.187)
1.40
(.055)
LENGTH
152.4
(6.00)
MIN.
1.52
(.060) TYP.
12.7
(.500)
REV. 01/12
*RoHS Directive 2002/95/EC Jan. 27, 2003 including annex and RoHS Recast 2011/65/EU June 8, 2011.
âTrimpotâ is a registered trademark of Bourns, Inc.
â âFluorinertâ is a registered trademark of 3M Co.
Speciï¬cations are subject to change without notice.
Customers should verify actual device performance in their speciï¬c applications.
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