3386B-1-502LF

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Introduction to Trimmer Potentiometers

Trimmer potentiometers are a widely used device in the field of electrical engineering. These devices are automotive-grade potentiometers designed for use in high precision, low resistance applications. Despite the basic similarities between regular trimmer and rotary-style potentiometers, there are some important differences that must be taken into account when considering their application fields and working principles.

3386B-1-502LF application field and working principle

The 3386B-1-502LF is an automotive trimmer potentiometer, designed for use in high reliability and high precision applications. This type of device has an overall resistance of only 100 ohms with a maximum power rating of 1 watt, making it ideal for use in small signal circuits. The 3386B-1-502LF features a three-terminal configuration, with a total resistance value of 15K ohms. The device has a total variance range of ±30%, making it suitable for applications requiring a wide range of adjustment.

The 3386B-1-502LF utilize a precision carbon element to achieve a stable, repeatable, and precise adjustment mechanism. The device has a two-stage variable resistance adjustment mechanism, allowing for fine-tuning of the total resistance value. The potentiometer\'s first stage is a linear track, allowing for the total resistance to be adjusted in very small increments. This is followed by a quadrature adjustment that provides additional fine-grained adjustments.

The potentiometer is also equipped with a built-in thermal protection circuit which helps protect the device from excessive heat. The device can also be operated from -55°C to 125°C, making it suitable for a wide range of automotive applications. Additionally, the device has a dielectric strength of 4KV, offering more protection against transient voltage spikes.

Conclusion

The 3386B-1-502LF trimmer potentiometer is a highly reliable and precision device that can be used in a variety of automotive applications. The device offers low resistance values with a wide range of adjustments, making it ideal for use in small signal circuits. Additionally, the device is equipped with a built-in thermal protection circuit and a dielectric strength of 4KV, allowing for increased protection against transient voltage spikes. The 3386B-1-502LF is an excellent choice for automotive applications requiring precise and reliable operation.

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