ST5EX501

Series:	ST5
Packaging:	Bulk
Moisture Sensitivity Level (MSL):	--
Part Status:	Active
Resistance:	500 Ohms
Power (Watts):	0.25W, 1/4W
Tolerance:	±10%
Temperature Coefficient:	±100ppm/°C
Number of Turns:	14
Adjustment Type:	Side Adjustment
Resistive Material:	Cermet
Mounting Type:	Surface Mount
Termination Style:	Gull Wing
Size / Dimension:	Rectangular - 0.236" x 0.169" Face x 0.266" H (6.00mm x 4.30mm x 6.75mm)

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Trimmer Potentiometers and ST5EX501: Its Application Field and Working Principle

Trimmer Potentiometers (TPs) are small, three-terminal potentiometers used for setting and calibrating circuits. Generally, they are used to precisely adjust the voltage divider ratio on a PCB or the gain of an amplifier or transducer circuit. TPs are typically found in instrumentation, testing and measurement systems, and also in automotive, consumer and portable electronics applications.Among the many TPs in the market, ST5EX501 stands out as one of the most versatile and reliable models. This high-performance TP provides superior rotational stability, temperature stability, and lifetime reliability, due to its quality construction and robust design. The ST5EX501 has a wide range of applications, including power supply voltage settings, analog transducer voltage offsets, and microcontroller port settings.The main working principle of a TP is based on a resistive element. This element can be adjusted by rotating the mechanical shaft, which causes an internal wiper to move along the resistive element. The relative position of the internal wiper with respect to the resistive element determines the value of resistance that is measured across the wiper and one of the terminals, i.e. the output terminal.The ST5EX501 is a trimming potentiometer with a variant resistance range of 1Kohm to 2Kohm. It has a 25-turn resolution with a rotational angle of about 7.4° per turn. It is a Potentiometer-Cermet type, meaning that the interior of the device consists of a ceramic material (cermet) resistive element and a spindle/wiper system that moves along it. The maximum current rating of the ST5EX501 is 1 milliampere and its power rating is 0.2 watts (derated to zero at 70°C). The main features of the ST5EX501 include high rotational stability, temperature stability, and long lifetime reliability. It also has a wide resistance range (1Kohm to 2Kohm). Additional features unique to the ST5EX501 include its volume of 0.01 cubic centimeter, flat adjustment tab, and its multiple usable mating angles. The ST5EX501 is available in two package styles, i.e. the TO-126 and the TO-127.The ST5EX501 is an ideal TP for applications such as power supplies, voltage setting, analog transducer voltage offsets, microcontroller port setting, and adjustable voltage divider networks. It is also suitable for use in areas with limited mechanical space.In summary, the ST5EX501 is an ideal TP for a variety of applications, due to its superior rotational stability, temperature stability, and lifetime reliability. Its wide resistance range, small volume, and multiple mating angles make it suitable for use in a number of applications. It is a Potentiometer-Cermet type TP with a resistance range of 1Kohm to 2Kohm and a rotational angle of 7.4° per turn.

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