Series:	Trimpot® 3318 - Open Frame
Packaging:	Bulk
Lead Free Status / RoHS Status:	--
Part Status:	Obsolete
Moisture Sensitivity Level (MSL):	--
Resistance:	500 Ohms
Power (Watts):	0.1W, 1/10W
Tolerance:	±30%
Temperature Coefficient:	±1000ppm/°C
Number of Turns:	1
Adjustment Type:	Top Adjustment
Resistive Material:	Carbon
Mounting Type:	Through Hole
Termination Style:	PC Pins
Size / Dimension:	Square - 0.264" x 0.252" Face x 0.250" H (6.70mm x 6.40mm x 6.35mm)

Due to market price fluctuations, if you need to purchase or consult the price. You can contact us or emial to us:   sales@allicdata.com

Trimmer Potentiometers

3318F-1-501 Application Field and Working Principle

Trimmer Potentiometers, or trimmers, are specialized forms of adjustable resistors used for precise adjustment of circuits. They are popularly used for radio frequency applications because of their extremely small size, light weight, low cost and good stability. The 3318F-1-501 is one such outer-type trimmer potentiometer.The 3318F-1-501 trimmer potentiometer is similar in feature and construction to ordinary trimmer potentiometers. It is sealed to prevent dust, grime and other environmental contaminants from entering its internal circuits. The device has an outer carbon track with a wiper contact. The track and wiper contact is usually made of gold-plated nickel and correct tracking of the wiper contact is ensured by using an etched spring. The 3318F-1-501 has three terminals, located at the rear, with one terminal being connected to the wiper contact and the other two connected to each end of the track. Adjustment is made by turning a knurled shaft located at the front, from which a small screwdriver can be inserted.The application field of the 3318F-1-501 spans across many industries and equipment. Its small size and reliability in low-impedance and radio frequency applications make it an ideal choice for many of today’s electronic devices. It is also suitable for applications such as volume controls, gain control, impedance matching, RF match tuning, frequency correction and impedance scaling.The 3318F-1-501 operates by controlling the resistance of the track as the wiper contact slides over it. As the shaft is turned, the wiper contact slides along a curved track, which has a positive resistance coefficient. The resistance of the track ranges from zero to the maximum value of 1kΩ. When the shaft is rotated, the resistance is actively increased or decreased proportionately, allowing precise control over the output signal.The 3318F-1-501 is a popularly used device and is commonly employed in radio transmitter circuitry, test sets, modems, oscillators, amplifiers, mobile phones, video equipment, calculators, toys, industrial control equipment, alarms and security equipment.It is important to consider a few key features when selecting a 3318F-1-501 for any application. Firstly, one should consider the power rating and the voltage tolerance of the trimmer. The power rating determines the amount of current that the trimmer can handle and the voltage tolerance determines the maximum acceptable voltage that can be applied to the device. If the maximum voltage of the application is higher than the voltage tolerated by the trimmer, then the device will be overloaded and can malfunction.In addition, one should also consider the environmental conditions the trimmer will be exposed to. Such factors include temperature, humidity, contamination, physical shock and vibration conditions. The 3318F-1-501 is designed for reliable operation in a wide range of environmental conditions, but it is important to ensure that the trimmer is rated for the particular conditions in which it will be exposed.To ensure maximized performance and a longer life, the 3318F-1-501 should also be provided with a suitable amount of current protection including surge protection and inrush current protection. Again, the required level of protection depends on the application environment and should be carefully considered before making a final selection.In summary, the 3318F-1-501 trimmer potentiometer is a popular choice for many electronic applications due to its small size, light weight, low cost and good stability. Its three-terminal design allows precise adjustment of the resistance, while its wide range of application fields, environmental conditions and power ratings make it a versatile component. Additional considerations should be taken into account to ensure correct selection and the optimal performance and life of the trimmer.

The specific data is subject to PDF, and the above content is for reference

Part Number	Manufacturer	Price	Quantity	Description