Series:	Trimpot® 3306 - Open Frame
Packaging:	Bulk
Lead Free Status / RoHS Status:	--
Part Status:	Active
Moisture Sensitivity Level (MSL):	--
Resistance:	200 Ohms
Power (Watts):	0.2W, 1/5W
Tolerance:	±25%
Temperature Coefficient:	±250ppm/°C
Number of Turns:	1
Adjustment Type:	Side Adjustment
Resistive Material:	Cermet
Mounting Type:	Through Hole
Termination Style:	PC Pins
Size / Dimension:	Rectangular - 0.268" x 0.319" Face x 0.331" H (6.81mm x 8.10mm x 8.40mm)

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Trimmer Potentiometers

3306K-1-201 Application Field and Working Principle

Trimmer Potentiometers, commonly referred to as trimmers, are adjustable three-terminal resistors used to adjust the gains or offsets in radio frequency (RF) or high-frequency (HF) circuits. They are typically designed with small physical dimensions to allow easy use and re-configuration of circuits with minimal disassembly. 3306K-1-201 is among the most popular type of trimmers. This section will explain its application field and working principle.

Application Field of 3306K-1-201

3306K-1-201 trimmers are mainly used in the following application fields:

• Radio Frequency (RF) Circuit
• High Frequency (HF) Circuit
• Satellite Positioning System (GPS)
• Computer Communications
• Signal Generation
• Telecommunication Stations
• Automotive Electronics
• Medical Instrumentation
• Home Security System

In these applications, 3306K-1-201 trimmers can adjust the gains or offsets, change the resistance value according to different needs, and measure the voltage difference between two points.

Working Principle of 3306K-1-201

3306K-1-201 is a type of single-turn ceramic-base variable resistance trimmer. It is composed of three terminals, a flat adjustable slidewire, an outer conductive fixed rotation ring, an inner adjustable ceramic base and a knob.When the knob is turned clockwise, the slider contacts slide along the resistance surface of the inner ceramic base by the centrifugal force generated by the rotation of the knob. When the force is sufficient, the slider will closely adhere to the surface of the inner ceramic base and the resistance value between the two ends is thereby changed. If the knob is turned counterclockwise, the slider briefly slides against the resistance surface of the inner ceramic base and then be lifted up by the spring force. This is the working mechanism of 3306K-1-201 trimmer.

Conclusion

Trimmer Potentiometers have been widely used in the above-mentioned application fields for a long time. 3306K-1-201 is among the most popular type of trimmers. It is composed of three terminals, a flat adjustable slidewire, an outer conductive fixed rotation ring, an inner adjustable ceramic base and a knob, which is used to adjust the gains or offsets and change the resistance value according to different needs.

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