3386V-1-254LF

Series:	Trimpot® 3386 - Sealed
Packaging:	Tube
Lead Free Status / RoHS Status:	--
Part Status:	Active
Moisture Sensitivity Level (MSL):	--
Resistance:	250 kOhms
Power (Watts):	0.5W, 1/2W
Tolerance:	±10%
Temperature Coefficient:	±100ppm/°C
Number of Turns:	1
Adjustment Type:	Side 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 electronic devices that are used to adjust the input or output voltages for voltage regulating steps. They can be used to adjust voltage levels, voltage range, current flow, or for power dissipation. The 3386V-1-254LF is an adjustable multi-turn or trimmer potentiometer. This type of potentiometer is designed to provide precision adjustment of electrical systems with low power dissipation.

Application Field

The 3386V-1-254LF has a wide range of applications. It is used for gain adjustment in amplifiers, offset adjustment for DC power supplies, preset voltage setting for adjustable power supplies, set point adjustment for temperature or pressure controllers, and volume and tone control in audio systems. This device can also be used for motor speed control, voltage regulation, frequency control, and impedance matching. The 3386V-1-254LF has a rated power dissipation of 1 watt, and voltage rating of 300VAC max and 0.5VA. It has a dielectric strength of 500VAC, and an actual electrical life of 10,000 cycles. It is an 8-pin SOIC package with 3 terminals and shorting connections. The device also has a design to provide low temperature coefficient of resistance under elevated temperatures.

Working Principle

The 3386V-1-254LF works on the principle of resistive voltage divider. It contains an adjustable center tap which divides the input voltage in two equal parts. The output voltage sensed by the large center wiper depends upon the position of the center tap on the resistor. The voltage is divided proportionally by the two resistors, allowing the user to adjust the voltage to any fixed output level, creating a “trimmer” setting. The 3386V-1-254LF is a three terminal adjustable potentiometer. It has specially designed contact reduction slots in the slider, to reduce the amount of electrical contact resistance between the wiper and the resistor. This reduces the amount of power dissipation, and increases electrical stability over a wide temperature range. The 3386V-1-254LF offers an easy solution for devices needing precise voltage adjustment in high vibration environments. It offers multiple turns, allowing for precise adjustments and it requires minimal power to operate. The device is also RoHS Lead-free, offering assurance of compliance with the world-wide environmental regulations.

Conclusion

The 3386V-1-254LF is an adjustable multi-turn trimmer potentiometer, with a wide range of applications in electronic systems. Its operation is based on the principle of resistive voltage divider, where the voltage naturally divides among two resistors in proportion to their resistance. This allows the user to adjust the voltage to any desired level. Additionally, the slider has specially designed contact reduction slots to reduce contact resistance and power dissipation. This device is definitely a great option for any project that requires precise voltage adjustment, and it is sure to fit the bill for your needs.

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