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AV DI TH AIL ST RO AB RI U LE BU GH TIO N
Features
3/8" Square/ Multiturn / Cermet / Industrial / Sealed Five popular terminal styles Standoffs Patent #4427966 drive mechanism
3299 - 3/8" Square Trimming Potentiometer
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. Power Rating (300 volts max.) 70C .........................................0.5 watt 125C ..........................................0 watt Temperature Range......-55C to +125C Temperature Coefficient .....100ppm/C Seal Test ........................85C 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 @ 70C (3% TR; 3% or 3 ohms, whichever is greater, CRV) Rotational Life........................200 cycles (4% TR; 3% or 3 ohms, whichever is greater, CRV) 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. Specifications are subject to change without notice.
Electrical Characteristics
3299P Common Dimensions
.38 (.015) 1.09 (.043) 1.12 9.53 (.044) (.375)
Standard Resistance Table
2.54 (.100) 2.54 (.100)
1.52 6.22 1.14 (.060) (.245 .045) 10.03 6.10 +.30/-.25 (.395) (.240 +.012/-.010) 3 .51 ADJ. SLOT 2 (.020) DIA. TYP. 2.29 DIA. 1 (.090) .56 X (.022) WIDE 5.23 .64 2.54 (.206) X (.025) DEEP (.100) BOTTOM VIEW 1.91 3299W (.075) 2.54 (.100) 3 2 1 2.54 (.100) MIN. 2.54 (.100) 2.54 (.100) BOTTOM VIEW
Popular values listed in boldface. Special resistances available.
Resistance (Ohms) 10 20 50 100 200 500 1,000 2,000 5,000 10,000 20,000 25,000 50,000 100,000 200,000 250,000 500,000 1,000,000 2,000,000
Resistance Code 100 200 500 101 201 501 102 202 502 103 203 253 503 104 204 254 504 105 205
Environmental Characteristics
How To Order
3299X
1.91 (.075) 3 2 1 BOTTOM VIEW 1.91 (.075) 3 2 1
3299Y
Model Style Standard or Modified Product Indicator -1 = Standard Product Resistance Code Consult factory for other available options.
3299 W - 1 - 103
2.54 (.100)
2.54 (.100)
2.54 (.100) BOTTOM VIEW 1.91 (.075)
3299Z
2.54 (.100)
2.54 (.100)
Physical Characteristics
3 2 1 BOTTOM VIEW
2.54 (.100)
2
CCW
WIPER
1
CLOCKWISE
3
CW
TOLERANCES: 0.25 (.010) EXCEPT WHERE NOTED DIMENSIONS ARE: METRIC (INCHES)
31

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