ST2A503

Series:	ST2
Packaging:	Bulk
Moisture Sensitivity Level (MSL):	--
Part Status:	Active
Resistance:	50 kOhms
Power (Watts):	0.1W, 1/10W
Tolerance:	±20%
Temperature Coefficient:	±150ppm/°C
Number of Turns:	1
Adjustment Type:	Top Adjustment
Resistive Material:	Cermet
Mounting Type:	Surface Mount
Termination Style:	J Lead
Size / Dimension:	Rectangular - 0.110" x 0.094" Face x 0.067" H (2.80mm x 2.40mm x 1.70mm)

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Introduction to Trimmer PotentiometersTrimmer potentiometers are small, adjustable resistors used in a range of different electronically-based applications. They are also known as trimmers, trim pots, preset pots, preset resistors, or variable resistors. They are often used in audio systems, TV sets, electronic oscillators, and motor speed control circuits.Trimmer potentiometers are generally made from three main components. The first two components are the resistive element and a spindle or terminal wire which is used to adjust the contact position on the element. The third component is a mounting hardware, usually made of plastic or metal.Trimmer potentiometers are available in a variety of different forms and sizes, as well as different operating temperature ranges, power ratings, and rotational speed. They are also available in either linear or logarithmic tapers.ST2A503 Application Field and Working PrincipleThe ST2A503 Trimmer Potentiometer from STMicroelectronics is a miniature, adjustable resistor used for applications such as frequency setting, voltage level setting, and potentiometer drifts compensation. This adjustable resistor comes in a compact package, with an operating temperature range of -20°C to + 85°C, and provides three different resistance values.The resistance range of the ST2A503 trimmer is from 10 Ω to 500 Ω. The resistance values of the ST2A503 can be adjusted by using a screwdriver or flat-blade screwdriver. It also features a high stability and low torque when adjusting.The operating principle of the ST2A503 is simple. When the spindle is adjusted, it moves a contact arm across the resistive element. The resistance of the element is determined by where the contact arm is positioned. The higher the resistance, the higher the output voltage. The lower the resistance, the lower the output voltage. ConclusionThe ST2A503 Trimmer Potentiometer from STMicroelectronics is a miniature adjustable resistor ideal for a range of applications such as frequency setting, voltage level setting, and potentiometer drifts compensation. This trimmer is made up of three components – a resistive element, spindle or terminal wire, and mounting hardware – and provides three different resistance values from 10Ω to 500Ω. The operating principle is quite simple – the contact arm moves across the resistive element and the resistance of the element is determined by the adjustment of the spindle.

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