3009Y-1-500LF

Trimmer Potentiometers

A trimmer potentiometer is an adjustable three terminal resistor, commonly used to calibrate circuits and fine-tune devices such as amplifiers, sound systems, instrumentation, and radio receivers. They have settings that are adjustable and a limited number of resistance values that can be set. These resistors are commonly known as trimmer pots and are offered in various sizes and shapes to accommodate different circuit needs.

One of the most popular and widely used trimmer potentiometers is the 3009Y-1-500LF. This trimmer potentiometer is designed for surface mount applications and has a maximum power rating of 0.02 Watts with a temperature range of -40° to +125°C. It is available with an adjustable resistance range from 50Ω to 500KΩ. Nine versions are available, offering various resistance values and terminal types.

Application Field

This trimmer potentiometer is commonly used for setting the working values of analog circuits, such as an adjustable DC supply voltage for the circuit processing. It can also be used as a variable attenuator to control the gain value of amplifiers. Additionally, they are widely used in signal filters, thyristor controls, radios, and other electronic components.

Working Principle

The 3009Y-1-500LF trimmer potentiometer features three terminals, one of which is connected to one of the two resistive elements, while the other terminal is connected to the other resistive element. When the shaft is rotated, the resistance value between the two terminals will change accordingly.

The main difference between this trimmer potentiometer and adjustable linear pots is that trimmer potentiometer has a rotating shaft while the linear pots have a sliding contact. By rotating the shaft of the trimmer pot, the user can adjust the resistance values between terminals.

The resistance value of the trimmer potentiometer depends on the number of “turns” which is represented by “T”. The 3009Y-1-500LF trimmer has 1/16” turns. This means that for every 1/16th of a turn, the resistance value increases by 500 ohms. Thus, it is possible to adjust the resistance between terminals from a value of 0Ω up to a maximum value of 500KΩ.

Conclusion

The 3009Y-1-500LF trimmer potentiometer is an adjustable three terminal resistor commonly used for setting operating values and attenuating signals in analog circuits. It offers adjustable resistance ranging from 50Ω to 500KΩ and a maximum power rating up to 0.02 Watts. It is suitable for surface mount applications with its temperature range of -40°C to +125°C and can be widely used in circuit processing, signal filters, amplifiers, and radio receivers.