3386U-1-502A

Series:	Trimpot® 3386 - Sealed
Packaging:	Tape & Box (TB)
Lead Free Status / RoHS Status:	--
Part Status:	Active
Moisture Sensitivity Level (MSL):	--
Resistance:	5 kOhms
Power (Watts):	0.5W, 1/2W
Tolerance:	±10%
Temperature Coefficient:	±100ppm/°C
Number of Turns:	1
Adjustment Type:	Top Adjustment
Resistive Material:	Cermet
Mounting Type:	Through Hole
Termination Style:	PC Pins
Size / Dimension:	Square - 0.375" x 0.375" Face x 0.190" H (9.53mm x 9.53mm x 4.83mm)

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Introduction

Trimmer potentiometers are a type of adjustable resistor, widely used in fields such as electronic appliances, auto-control, electric circuits, and medical equipment. The 3386U-1-502A trimmer potentiometer is a 10-turn, single-gang potentiometer, primarily used for high-precision, manual adjustments. It is a good choice for applications that require precise manual adjustments in limited spaces, such as automotive radio repairs.

Design

The 3386U-1-502A trimmer potentiometer is a single-gang, 10-turn component that consists of a track, three terminals, a moving slider, and a contact terminal. The track consists of a metallic coating on a plastic ring. The three terminals serve to connect the track to the electrical circuit. The slider is a wiper which creates electrical contact between the track and the contact terminal, and adjusts the resistance value. The helical track serves to distribute the resistance evenly across the length of the track. The contact terminal is connected to the slider, and its resistance value can be adjusted manually.

Application Field

The 3386U-1-502A trimmer potentiometer is suitable for applications where precise manual adjustment is required in limited space. This includes automobile radios, electronic appliances, medical equipment, touch screens, and auto-control systems. This trimmer also works perfectly for applications requiring full range of resistance variation from 0 to 25 ohms, without the need for recalibration.

Working Principle

The working principle of the 3386U-1-502A trimmer potentiometer is based on the principle of electromagnetism. When a current is applied to the component, a voltage is created across the track. This voltage is proportional to the resistance of the track. When the slider is used to adjust the resistance, the voltage across the track changes accordingly. The slider adjusts the resistance of the track by being in contact with the contact terminal, creating an electrical connection. The changing resistance of the track makes changes to the current that runs through the component, and thus the voltage across the track changes accordingly.

Conclusion

The 3386U-1-502A trimmer potentiometer is a valuable component for applications that require precise manual adjustments in limited spaces. Its features include a helical track for even resistance distribution, a single-gang component design, and the ability to adjust the resistance from 0 to 25 ohms. This trimmer works on the principle of electromagnetism, where the voltage across the track is proportional to the resistance of the track. It is suitable for automobile radio repairs, electronic appliances, medical equipment, touch screens, and auto-control systems.

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