3299W-1-103 Datasheet, PDF (1/1 Pages) Bourns Electronic Solutions – 3/8” Square Trimming Potentiometer

AVATDIHLISRATOBRLUIEGBUHTION
Features
■ 3/8” Square/ Multiturn / Cermet /
Industrial / Sealed
■ Five popular terminal styles
■ Standoffs
■ Patent #4427966 drive mechanism
3299 - 3/8” Square Trimming Potentiometer
Electrical Characteristics
Standard Resistance Range
..................................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)
Adjustability
Voltage......................................±0.01%
Resistance ................................±0.05%
Resolution.....................................Infinite
Insulation Resistance ................500 vdc.
1,000 megohms min.
Dielectric Strength
Sea Level ..................................900 vac
70,000 Feet...............................350 vac
Effective Travel..................25 turns nom.
Environmental Characteristics
Power Rating (300 volts max.)
70°C .........................................0.5 watt
125°C ..........................................0 watt
Temperature Range......-55°C to +125°C
Temperature Coefficient .....±100ppm/°C
Seal Test ........................85°C Fluorinert*
Humidity........MIL-STD-202 Method 103
96 hours
(2% ∆TR, 10 Megohms IR)
Vibration............20G (1% ∆TR; 1% ∆VR)
Shock..............100G (1% ∆TR; 1% ∆VR)
Load Life
................1,000 hours 0.5 watt @ 70°C
(3% ∆TR; 3% or 3 ohms,
whichever is greater, CRV)
Rotational Life........................200 cycles
(4% ∆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 ......................................0.035 oz.
Marking ...........................Manufacturer’s
trademark, resistance code,
wiring diagram, date code,
manufacturer’s model
number and style
Wiper ..............................Set at CW end
Flammability ..........................U.L. 94V-0
Standard Packaging .....50 pcs. per tube
Adjustment Tool ..............................H-90
*”FLUORINERT” IS A REGISTERED TRADEMARK OF 3M CO.
3299P
Common Dimensions
.38
(.015)
1.09
(.043)
1.12
9.53 _(.044)
(.375)
2.54
(.100)
2.54
(.100)
1.52
(.060)
10.03
(.395)
ADJ. SLOT
2.29
(.090)
DIA.
2
3
1
X
.56
(.022)
WIDE
X
.64
(.025)
DEEP
2.54
(.100)
6.22 ± 1.14
(.245 ± .045)
6.10 +.30/-.25
(.240 +.012/-.010)
.51
(.020)
DIA.
TYP.
5.23
(.206)
3299W
BOTTOM VIEW
2.54
(.100)
1.91
(.075)
3
2
1
3299X
2.54
(.100)
MIN.
2.54 2.54
(.100) (.100)
BOTTOM VIEW
1.91
(.075)
3
2
1
BOTTOM VIEW
3299Y
2.54 2.54
(.100) (.100)
1.91
(.075)
3
2
1
2.54
(.100)
BOTTOM VIEW
3299Z
2.54
(.100)
2.54
(.100)
1.91
(.075)
3
2
1
2.54
(.100)
BOTTOM VIEW
CCW ₁
2 ^WIPER
CLOCKWISE
3 CW
TOLERANCES: ± 0.25 (.010) EXCEPT WHERE NOTED
DIMENSIONS ARE:
METRIC
(INCHES)
Specifications are subject to change without notice.
Standard Resistance Table
Re(Osihsmtasn)ce
1251251251225122512000000,,,00500050,,00000000,,,,0000000000000,,,,000000000000000000000,,0000000000
ResCisotdaence
125125251225122512100000000005000500000001112233334444552
Preospisutlaanrcveasluaevsaliilsatbelde.in boldface. Special
How To Order
3299 W - 1 - 103
Model
Style
StaPnrdoadrudcot rInMdoicdaitfoierd
-1 = Standard Product
Resistance Code
Consult factory for other available options.
31