Features
3/8 Square/ Multiturn / Cermet /
Industrial / Sealed
Five popular terminal styles
Standoffs
RoHS compliant* version available
For trimmer applications/processing
guidelines, click here
3299 - 3/8 Square Trimpot Trimming Potentiometer
Standard Resistance Table
Electrical Characteristics PrProduct Dimensionsoduct Dimensions
Standard Resistance Range
3299P Resistance Resistance
Common Dimensions (Ohms) Code
................................10 to 2 megohms
2.54 10 100
(see standard resistance table)
1.09 .254
.38 (.100)
20 200
Resistance Tolerance ........... 10 % std.
(.043 .010)
(.015) 2.54
50 500
(.100)
1.12 .254
(tighter tolerance available) 100 101
9.53
(.044 .010) 200 201
Absolute Minimum Resistance
(.375)
500 501
........................... 1 % or 2 ohms max.
1,000 102
1.52
(whichever is greater)
6.22 1.14 2,000 202
(.060)
(.245 .045) 5,000 502
Contact Resistance Variation
10.03
10,000 103
6.10 +.30/-.25
........................ 1.0 % or 3 ohms max. (.395)
20,000 203
(.240 +.012/-.010)
3
(whichever is greater)
.51 25,000 253
ADJ. SLOT
DIA. TYP.
2
Adjustability (.020) 50,000 503
2.29
DIA. 1
100,000 104
(.090)
Voltage ..................................0.01 %
200,000 204
.56
Resistance ............................0.05 % WIDE
X
(.022) 250,000 254
5.23
Resolution ...................................
.64 2.54 500,000 504
DEEP
X (.206)
(.025) (.100)
Insulation Resistance ...............500 vdc. 1,000,000 105
BOTTOM VIEW 2,000,000 205
1,000 megohms min.
1.91
3299W
Dielectric Strength
Popular distribution resistance values listed in
(.075)
2.54
boldface. Special resistances available.
Sea Level................................ 900 vac
(.100)
70,000 Feet ............................ 350 vac
3
.................25 turns nom.
How To Order
2
3299 W - 1 - 103 LF
1
Environmental Characteristics
2.54 BOTTOM VIEW Model
Power Rating (300 volts max.)
(.100)
70 C ......................................0.5 watt Style
MIN.
125 C .......................................0 watt
3299X
1.91
Temperature Range ...-55 C to +125 C
2.54 2.54 (.075) Product Indicator
... 100 ppm/C (.100) (.100)
-1 = Standard Product
3
Seal Test ......................85 C Fluorinert
2
Resistance Code
Humidity .......MIL-STD-202 Method 103
1
Terminations
96 hours
BOTTOM VIEW
LF = 100 % Tin-plated (RoHS compliant)
(2 % TR, 10 Megohms IR)
Blank = 90 % Tin / 10 % Lead-plated
1.91
3299Y
Vibration ....... 20 G (1 % TR; 1 % VR)
2.54 (Standard)
2.54
(.075)
Shock ......... 100 G (1 % TR; 1 % VR)
(.100)
(.100)
3
Consult factory for other available options.
Load Life
2
.............1,000 hours 0.5 watt @ 70 C
1
(3 % TR; 3 % or 3 ohms,
2.54
(.100)
whichever is greater, CRV)
BOTTOM VIEW
Rotational Life .......................200 cycles
(4 % TR; 3 % or 3 ohms, 3299Z
1.91
2.54
2.54
(.075)
whichever is greater, CRV)
(.100)
(.100)
3
Physical Characteristics
WARNING Cancer and Reproductive Harm
2
www.P65Warnings.ca.gov
Torque .............................3.0 oz-in. max. 1
2.54
Mechanical Stops .................Wiper idles
REV. 11/16
(.100)
Terminals .......................Solderable pins
BOTTOM VIEW
Trimpot is a registered trademark of Bourns, Inc.
Weight ..................................... 0.035 oz.
Fluorinert is a registered trademark of 3M Co.
Marking ...........................Manufacturers WIPER
2
*RoHS Directive 2002/95/EC Jan. 27, 2003 including
trademark, resistance code,
annex and RoHS Recast 2011/65/EU June 8, 2011.
CCW 3 CW
1
wiring diagram, date code,
Specications are subject to change without notice.
CLOCKWISE
manufacturers model
Users should verify actual device performance in their
number and style
specic applications. The products described herein
MM MM
Wiper ...............50 % (Actual TR) 10 %
DIMENSIONS:DIMENSIONS:
and this document are subject to specific legal
(INCHES) (INCHES)
Flammability ..........................U.L. 94V-0
disclaimers as set forth on the last page of this
0.25 0.25
Standard Packaging .....50 pcs. per tube
TOLERANCES: TOLERANCES: EXCEPT WHERE NOTEDEXCEPT WHERE NOTED document, and at
(.010) (.010)
www.bourns.com/docs/legal/disclaimer.pdf.
Adjustment Tool ..............................H-90
*RoHS COMPLIANT
*RoHS COMPLIANT
VERSIONS
VERSIONS
AVAILABLE
AVAILABLE
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