3318G-1-203A Potentiometers, Variable Resistors

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Trimmer potentiometers are variable resistors featuring an adjustable contact that can be moved along its resistive element next to a fixed contact, thus modifying the electrical resistance between the two contacts. The 3318G-1-203A is a miniature, single-turn trimmer potentiometer manufactured by Bourns. It has a metal composite element, enclosed in a glass-filled polyphenylene sulfide (PPS) housing package.

The 3318G-1-203A features a 7.8mm square base, a 6.2mm bearing, a 12.5mm long slotted shaft and a 12.3mm tall package. It provides a resistance of 100Ω with a slotted shaft and a resistance of 500kΩ with a detent. It features a minimum resistance of 10Ω, a maximum of 500Ω, and a power rating of 0.1W. Additionally, the 3318G-1-203A is a non-inductive trimmer potentiometer that operates at a temperature range of -55°C to +85°C.

The 3318G-1-203A is widely used in a variety of applications, such as amplifier gain adjustment, calibrating filters, detecting frequency, voltage dividing, temperature adjustment, and voltage regulation. Being a very small form factor trimmer potentiometer, the 3318G-1-203A is particularly advantageous for applications requiring a compact component size.

The 3318G-1-203A works on the principle of electrical resistance. As the shaft is rotated, the resistance between the moving contact and the fixed contact changes. The resistance can be decreased to the minimum value or increased to the maximum value achievable by the device, which is dependent on the design and materials used. It is typically used in applications requiring a high degree of sensitivity and precision.

The 3318G-1-203A is a high-performance trimmer potentiometer that offers a range of features and advantages for different applications. Its small size enables it to be used in applications where space is limited, while its resistance accuracy ensures precise adjustment and reliable performance. Additionally, its long life and durability make it a preferred choice for many applications.

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