Features
nꢀ 3/8ꢀ˝ꢀSquare/ꢀMultiturnꢀ/ꢀCermetꢀ/ꢀꢀ
ꢀ
Industrialꢀ/ꢀSealed
ꢀ
ꢀ
nꢀ Fiveꢀpopularꢀterminalꢀstyles
nꢀ Standoffs
nꢀ RoHSꢀcompliant*ꢀversionꢀavailable
nꢀ Forꢀtrimmerꢀapplications/processingꢀꢀ
ꢀ
guidelines,ꢀclickꢀhere
ꢀ
3299ꢀ-ꢀ3/8ꢀ˝ꢀSquareꢀTrimpot®ꢀTrimmingꢀPotentiometer
Standard Resistance Table
Product Dimensions
Electrical Characteristics
Standard Resistance Range
3299P
Resistance
(Ohms)
10
Resistance
Common Dimensions
Code
100
200
500
101
201
501
102
202
502
103
203
253
503
104
204
254
504
105
205
................................10 to 2 megohms
(see standard resistance table)
Resistance Tolerance ...........±10 % std.
(tighter tolerance available)
Absolute Minimum Resistance
........................... 1 % or 2 ohms max.
(whichever is greater)
Contact Resistance Variation
........................ 1.0 % or 3 ohms max.
(whichever is greater)
2.54
(.100)
1.09 .ꢀ25
(.053 .010ꢁ
.38
20
(.015)
2.54
(.100)
50
1.12 .254
(.044 .010)
100
9.53
(.375)
200
500
1,000
1.52
(.060)
10.03
2,000
6.22 1.14
(.245 .045)
6.10 +.30/-.ꢀ2
5,000
10,000
20,000
25,000
50,000
100,000
200,000
250,000
500,000
1,000,000
2,000,000
(.395)
(.ꢀ50 +.01ꢀ/-.010ꢁ
3
2
1
.51
(.020)
ADJ. SLOT
2.29
(.090)
DIA. TYP.
Adjustability
DIA.
Voltage .................................. ±0.01 %
Resistance ............................ ±0.05 %
Resolution ................................... Infinite
Insulation Resistance ...............500 vdc.
1,000 megohms min.
.56
WIDE
(.022)
X
X
5.23
(.206)
.64
2.54
(.100)
BOTTOM VIEW
DEEP
(.025)
1.91
(.072ꢁ
3299W
Dielectric Strength
Popular distribution resistance values listed in
boldface. Special resistances available.
2.54
(.100)
Sea Level................................ 900 vac
70,000 Feet............................ 350 vac
Effective Travel .................25 turns nom.
3
How To Order
ꢀ
3299 W - 1 - 103 LF
1
Environmental Characteristics
BOTTOM VIEW
Model
2.54
(.100)
MIN.
Power Rating (300 volts max.)
70 °C......................................0.5 watt
125 °C.......................................0 watt
Temperature Range...-55 °C to +125 °C
Temperature Coefficient ... ±100 ppm/°C
Seal Test......................85 °C Fluorinert†
Humidity .......MIL-STD-202 Method 103
96 hours
Style
3299X
Standard or Modified
Product Indicator
-1 = Standard Product
1.91
(.075)
2.54
(.100)
2.54
(.100)
3
ꢀ
Resistance Code
1
Terminations
LF =
Blank = 90 % Tin / 10 % Lead-plated
(Standard)
BOTTOM VIEW
100 % Tin-plated (RoHS compliant)
(2 % ΔTR, 10 Megohms IR)
1.91
(.075)
3299Y
Vibration ....... 20 G (1 % ΔTR; 1 % ΔVR)
Shock ......... 100 G (1 % ΔTR; 1 % ΔVR)
Load Life
.............1,000 hours 0.5 watt @ 70 °C
(3 % ΔTR; 3 % or 3 ohms,
whichever is greater, CRV)
Rotational Life .......................200 cycles
(4 % ΔTR; 3 % or 3 ohms,
2.54
(.100)
2.54
(.100)
3
Consult factory for other available options.
ꢀ
1
2.54
(.100)
BOTTOM VIEW
3299Z
1.91
(.075)
2.54
(.100)
2.54
(.100)
whichever is greater, CRV)
3
Physical Characteristics
2
1
Torque.............................3.0 oz-in. max.
Mechanical Stops.................Wiper idles
Terminals .......................Solderable pins
Weight .....................................0.035 oz.
Marking...........................Manufacturer’s
trademark, resistance code,
WARNINGꢀꢀCancerꢀandꢀ
ReproductiveꢀHarm
2.54
(.100)
BOTTOM VIEW
www.P65Warnings.ca.gov
WIPER
2
REV.ꢀ08/19
*RoHSꢀDirectiveꢀ2015/863,ꢀMar.ꢀ31,ꢀ2015ꢀandꢀAnnexꢀ
“Trimpot”ꢀisꢀaꢀtrademarkꢀofꢀBourns,ꢀInc.
CW
CCW
3
1
wiring diagram, date code,
CLOCKWISE
manufacturer’s model
†“Fluorinert”ꢀisꢀaꢀregisteredꢀtrademarkꢀofꢀ3MꢀCo.
Specificationsꢀareꢀsubjectꢀtoꢀchangeꢀwithoutꢀnotice.ꢀ
Usersꢀshouldꢀverifyꢀactualꢀdeviceꢀperformanceꢀinꢀtheirꢀ
specificꢀapplications.ꢀTheꢀproductsꢀdescribedꢀhereinꢀandꢀ
thisꢀdocumentꢀareꢀsubjectꢀtoꢀspecificꢀlegalꢀdisclaimersꢀasꢀ
setꢀforthꢀonꢀtheꢀlastꢀpageꢀofꢀthisꢀdocument,ꢀandꢀatꢀꢀ
www.bourns.com/docs/legal/disclaimer.pdf.
number and style
ꢀ
MM
(INCHES)
0.25ꢀ ꢀꢀꢀꢀꢀꢀ
Wiper ...............50 % (Actual TR) ±10 %
Flammability ..........................U.L. 94V-0
Standard Packaging.....50 pcs. per tube
Adjustment Tool..............................H-90
DIMENSIONS:
ꢀ
ꢀ
TOLERANCES:ꢀ
EXCEPTꢀWHEREꢀNOTED
ꢀ
(.010)