EVM-1ESX30B22 Potentiometers, Variable Resistors

Series:	EVM
Packaging:	Tape & Reel (TR)
Lead Free Status / RoHS Status:	--
Part Status:	Obsolete
Moisture Sensitivity Level (MSL):	--
Resistance:	200 Ohms
Power (Watts):	0.2W, 1/5W
Tolerance:	±25%
Temperature Coefficient:	±250ppm/°C
Number of Turns:	1
Adjustment Type:	Top Adjustment
Resistive Material:	Cermet
Mounting Type:	Surface Mount
Termination Style:	J Lead
Size / Dimension:	Rectangular - 0.165" x 0.150" Face x 0.055" H (4.20mm x 3.80mm x 1.40mm)

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Introduction to Trimmer Potentiometers

A trimmer potentiometer (or trimmer pot) is an electrical device with a variable resistance which is adjusted by rotating a shaft or knob. Its design allows for easy adjustment and fine-tuning of devices with which it is connected. A lineup of trimmer potentiometers may include a variety of types and sizes, including: thimble, slide, membered, spring loaded, miniature, panel mount, and more.

EVM-1ESX30B22 Application Field and Working Principle

The EVM-1ESX30B22 is one of many models of trimmer potentiometers produced by Panasonic Electric Works. It is part of the ESX Series of high-performance, high-precision trimmers, and offers excellent electrical and mechanical properties and resistance stability over time and temperature. The EVM-1ESX30B22 is a 3 terminal type trimmer with a flat, rectangular shape and an 8mm shaft. The EVM-1ESX30B22 is typically used in audio equipment, motor-driven devices, infrared and microwave sensors, and a wide range of other applications. It can also be used for general-purpose circuit adjustments, such as setting the gain and balance of amplifiers. The trimmer potentiometer works by increasing or decreasing the resistance based on the amount of rotation of the shaft or knob. Depending on the model, it can offer continuous adjustment or stepped adjustment (for discrete steps). The resistance value of the potentiometer is controlled by two points - a left-hand end point and a right-hand end point. The position of the wiper between the two end points determines the resistance value.The EVM-1ESX30B22 has a resistance range of 50-500ohms, which is adjustable by a 0.4mm flat tip screwdriver. The resistance has a tolerance of ±10%, and a temperature coefficient of ±200PPM/°C. It also has an operating temperature range of -25°C to +85°C, and a storage temperature range of -25°C to +65°C. The device is rated for 1,000 repetitions of mechanical operation, and for 0.5W of power rating at 25°C.

Conclusion

The Panasonic Electric Works EVM-1ESX30B22 trimmer potentiometer is a high-performance and high-precision device which offers excellent electrical and mechanical properties. It has a narrow resistance range and a temperature coefficient of ±200PPM/°C, and is designed for use in a variety of applications, including audio equipment, motor-driven devices, infrared and microwave sensors, and general-purpose circuit adjustments. Trimmer potentiometers are devices which offer fine control and adjustment of electrical circuits. They are easy to adjust and offer excellent electrical and mechanical properties and stability over time and temperature. They are available in a variety of sizes and configurations, including thimble, slide, membered, spring loaded, miniature, panel mount, and more.

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