ST4ETG504

Series:	ST4
Packaging:	Tape & Reel (TR)
Lead Free Status / RoHS Status:	--
Part Status:	Active
Moisture Sensitivity Level (MSL):	--
Resistance:	500 kOhms
Power (Watts):	0.25W, 1/4W
Tolerance:	±20%
Temperature Coefficient:	±100ppm/°C
Number of Turns:	1
Adjustment Type:	Side Adjustment
Resistive Material:	Cermet
Mounting Type:	Surface Mount
Termination Style:	J Lead
Size / Dimension:	Square - 0.197" L x 0.177" W x 0.224" H (5.00mm x 4.50mm x 5.70mm)

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Trimmer Potentiometers: ST4ETG504 Application Field and Working Principle

Trimmer Potentiometers, or trim pots, are adjustable resistors commonly used to fine-tune analog circuits or accurately set a predetermined voltage. This makes them a very versatile and commonly used type of device. ST4ETG504 is a type of trimmer potentiometer from the STMicroelectronics family, and it will be used to demonstrate the application field and working principle of trim pots.Trimmer Potentiometers are widely used in devices and systems which require a programmable adjustment, from motor drives and factory automation to consumer electronics and musical instruments. In the case of the ST4ETG504, it is a Surface Mount trimmer with 4 terminals, making it especially suitable for SMD assembly and high-density applications. Thanks to its small footprint of 1.4mm x 0.8mm, it can be mounted on almost any size PCB. It also offers a good temperature stability, allowing it to perform stably at temperatures ranging from -40°C to +85°C.The ST4ETG504 is a miniature non-linear precision potentiometer, which is adjustable via a micro-tweaker. It features a resistance range of 25k ohms and a flat taper curve. As a standard trim pot, it consists of four main parts: the SPDT switch, the adjustment knob, the wiper, and the resistor element. This makes it a potentiometer, a device that acts as a variable resistor.The adjustment knob controls the wiper, which slides across the resistor element contacting different levels of the resistance. As the knob is turned, the contact point of the wiper moves up or down the resistor element - changing the voltage or current applied to the circuit. This allows ST4ETG504 to be used for precision control of voltage or current in a variety of applications.The SPDT switch is also integrated into the ST4ETG504, which can be used to switch between two potentials on the resistor. When the switch is in the “off” position, no current can flow through the circuit. When it is in the “on” position, the wiper is allowed to move freely. This feature allows for more precise control as the user can switch between different voltage or current levels.The ST4ETG504 is a valuable tool in many different types of applications, ranging from adjusting the voltage of a power supply to tuning an amplifier. Despite its small size, it is capable of great precision as its electrical characteristics are often as accurate as those of much larger potentiometers. When used properly, it can be an invaluable aid in helping users to accurately and quickly adjust any desired setting.

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