39PNABR20KLF20

Series:	39
Part Status:	Active
Lead Free Status / RoHS Status:	--
Resistance:	20 kOhms
Power (Watts):	0.25W, 1/4W
Tolerance:	±20%
Temperature Coefficient:	--
Number of Turns:	1
Adjustment Type:	Top Adjustment
Resistive Material:	Cermet
Mounting Type:	Through Hole
Termination Style:	PC Pins
Size / Dimension:	--

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Introduction

Trimmer Potentiometers are widely used in various fields and with different working principles. The 39PNABR20KLF20 is one of them. It is a multi-turn trimmer potentiometer with three terminals. This article will discuss the specifications and application fields of 39PNABR20KLF20, along with its working principle.

Specifications

The 39PNABR20KLF20 has a linear nominal resistance range of 20K ohm. This range is referred to as the max effective resistance. It has a linear taper and is designed for easy adjustment with a standard tool. One of its distinctive features is that it has a low temperature coefficient of ±150ppm/°C. This is beneficial in stabilizing the output over a wide temperature range. It also has an operating temperature range of -55 °C to +125 °C. Moreover, it has an insulation resistance of 10 gigaΩ and a dielectric strength of 500VAC.

Application Fields

The 39PNABR20KLF20 trimmer potentiometer is mainly used in precision circuits. It can be used in medical and audio equipment, automotive applications and other industrial applications. It is also used in industrial and medical instrumentation such as pH meters, blood pressure monitors and other measurement and testing devices. It is also suitable for high frequency circuit tuning, transducer matching, etc. because of its small size and high sensitivity.

Working Principle

The working principle of the 39PNABR20KLF20 trimmer potentiometer is simple. It consists of a resistive element and an adjustable slider. The resistive element is connected to two external terminals. The adjustable slider is linked to the third terminal, which is the control beam. When the control beam is rotated, it changes the resistance between the two terminals. This variation in resistance is used to control the circuit’s output.

Conclusion

The 39PNABR20KLF20 trimmer potentiometer is a multi-turn trimmer device with a linear taper. It has a low temperature coefficient, an operating temperature range of -55°C to +125°C, an insulation resistance of 10 gigaΩ and a dielectric strength of 500VAC. It is mainly used in precision circuits and is suitable for high frequency circuit tuning, transducer matching, etc. Its working principle is quite simple; when the control beam is rotated, it changes the resistance between two terminals.

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