BOURNS 3269 Service Manual
2.54
(.100)
2.54
(.100)
1.19
(.047)
TYP.
3.30
(.130)
TYP.
2.54
(.100)
2.54
(.100)
TYP.
7.62
(.300)
VERSIONS
*RoHS COMPLIANT
AVAILABLE
Features
■ Stable, infinite resolution cermet element
■ Vertical and horizontal adjust styles
■ Optional packaging on embossed tape
■ Compatible with surface mount
manufacturing processes
■ RoHS compliant* - see processing
information on lead free surface mount
trimmers
3269 - 1/4 ” Square SMD Trimming Potentiometer
Electrical Characteristics
Standard Resistance Range
..........................10 ohms to 1 megohm
(see standard resistance table)
Resistance Tolerance ............±10 % std.
(closer tolerance available)
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.....................................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.)
85 °C ......................................0.25 watt
150 °C .........................................0 watt
Temperature Range ....-65 °C to +150 °C
Temperature Coefficient ....±100 ppm/°C
Seal Test........................85 °C Fluorinert
†
Humidity........MIL-STD-202 Method 106
(2 % ∆TR; IR 100 Megohms)
Vibration.........30 G (1 % ∆TR; 1 % ∆VR)
Shock...........100 G (1 % ∆TR; 1 % ∆VR)
Load Life..1,000 hours 0.25 watt @ 85 °C
(3 % ∆TR; 3 % or 3 ohms
whichever is greater, CRV)
Rotational Life ........................200 cycles
(2 % ∆TR; 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
Standard Packaging .....50 pcs. per tube
Adjustment Tool ..............................H-90
Wiper................50 % (Actual TR) ±10 %
*RoHS Directive 2002/95/EC Jan 27 2003 including Annex.
†“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.
3269P
Common Dimensions
5.21
(.205)
1.52 ± .38
(.060 ± .015)
3269W
3
7.44
(.293)
2.54
(.100)
3269X
1.02
(.040)
2.29
(.090)
TYP.
3 PLCS.
RECOMMENDED PCB
LAYOUT - "P"
ADJ. SLOT
1
.46 ± .03
(.018 ± .001)
DIA. TYP.
2
1.78
(.070)
1.02
(.040)
2
9.70
(.382)
.51
DIA.
X X DEEP
(.020)
6.35 ± .51
(.250 ± .020)
2.54
3
(.100)
.43 ± .05
(.017 ± .002)
DIA. TYP.
1
1.52 ± .38
(.060 ± .015)
1.02
(.040)
6.35 ± .51
(.250 ± .020)
2.54
(.100)
SQ.
1.02
(.040)
1.52 ± .38
(.060 ± .015)
1.02
(.040)
3
RECOMMENDED PCB
LAYOUT - "W" & "X"
WIDE
TYP. 3 PLCS.
4.32
(.170)
2.29
(.09)
2
1.19
(.047)
.51
(.020)
TYP.
3 PLCS.
1
1.02
(.040)
3 PLCS.
(.100)
(.100)
(.040)
7.44
(.293)
TYP.
TYP
2.54
2.54
1.02
TYP
2.79
(.110)
WIPER
2
CCW
1
CLOCKWISE
TOLERANCES: ± 0.25 (.010) EXCEPT WHERE NOTED
DIMENSIONS ARE:
(INCHES)
How To Order
3269 X - 1 - 103 G LF
Model
Style
Standard or Modified
Product Indicator
For P pin style:
-1 = Terminals #1 & #3 away from
sprocket holes
-2 = Terminals #1 & #3 toward
sprocket holes
For W & X pin styles:
-1 = Terminals #1 & #3 toward
sprocket holes
-2 = Terminals #1 & #3 away from
sprocket holes
For P, W & X pin styles:
-11 = ±5 % TR
Resistance Code
Embossed Tape Designator
G = Embossed Tape
“P” Style - 750 pcs./13 ˝ reel
“W, X” Style - 500 pcs./13 ˝ reel
Terminations
LF = 100 % Tin-plated (RoHS compliant)
Blank = 90 % Tin / 10 % Lead-plated
(Standard)
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.
MM
CW
3
TAPE
330.2 ± 5.08
(13.000 ± .200)
16.51 ± 2.03/ -.000
(.650 ± .080/ -.000)
REEL
7.50 ± .10
(.295 ± .004)
12.00 ± .10
(.472 ± .004)
1.5 + .10/ –.00
(.059 + .004/ –.000)
4.00
± .01
(.157 ± .004)
2.00 ± .05
(.079 ± .002)
1.75 ± .10
(.069 ± .004)
DIA.
13.0
± .51
(.512 ± .020)
17.78 ± .25
(.700 ± .010)
EQUAL SPACED 3 PLCS.
DIA.
99.06 ± 1.02
(3.90 ± .040)
18.69 ± .79
(.736 ± .031)
DIA.
DIA.
16.0 ± .10
(.630 ± .004)
EMBOSSED
CARRIER TAPE
COVER TAPE
TAPE
330.2 ± 5.08
(13.000 ± .200)
16.51 ± 2.03/ -.000
(.650 ± .080/ -.000)
REEL
7.50 ± .10
(.295 ± .004)
12.00 ± .10
(.472 ± .004)
1.5 + .10/ –.00
(.059 + .004/ –.000)
4.00
± .01
(.157 ± .004)
2.00 ± .05
(.079 ± .002)
1.75 ± .10
(.069 ± .004)
DIA.
13.0
± .51
(.512 ± .020)
17.78 ± .25
(.700 ± .010)
EQUAL SPACED 3 PLCS.
DIA.
99.06 ± 1.02
(3.90 ± .040)
18.69 ± .79
(.736 ± .031)
DIA.
DIA.
16.0 ± .10
(.630 ± .004)
EMBOSSED
CARRIER TAPE
COVER TAPE
3269 - Packaging Specifications
Packaging Specifications
(P Style)
Packaging Specifications
(W & X Styles)
-1 as shown meets EIA Specification 481.
Units packaged 750 pieces per reel.
-2 as shown meets EIA Specification 481.
Units packaged 500 pieces per reel.
REV. 01/05
Specifications are subject to change without notice.
Customers should verify actual device performance in their specific applications.
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