KNP1WSJR-52-91R

Series:	KNP
Packaging:	Tape & Reel (TR)
Part Status:	Active
Resistance:	91 Ohms
Tolerance:	±5%
Power (Watts):	1W
Composition:	Wirewound
Features:	Flame Retardant Coating, Safety
Temperature Coefficient:	±300ppm/°C
Operating Temperature:	-40°C ~ 200°C
Package / Case:	Axial
Supplier Device Package:	Axial
Size / Dimension:	0.138" Dia x 0.354" L (3.50mm x 9.00mm)
Height - Seated (Max):	--
Number of Terminations:	2

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Through Hole Resistors

Through hole resistors are widely used in electrical engineering applications due to their versatility and low cost. The KNP1WSJR-52-91R is a popular choice for applications requiring high precision, high accuracy, and low power consumption. This type of resistors are constructed from a metal plate with a thick plastic film resistive material bonded behind it. Its wide range of sizes and values make it useful in a variety of circuits and electrical systems.

Applications

The KNP1WSJR-52-91R is ideal for use as an adjustable resistor in radio frequency (RF) circuits, in DC-to-DC buck converters, as a feedback element, or in low-pass filters. Its precise resistance value allows it to be used as a sensing element in industrial and automotive applications. It can also be used as an adjustable load resistor in battery managements systems to accurately measure battery voltage and prevent overcharging. Additionally, it can be used to provide a bias voltage to transistors for amplifier applications.

Electric Properties

The KNP1WSJR-52-91R is approximately 1.5mA rating with an inductance of 2.2uH and a capacitance of 0.45pF. It features an operating temperature range of -60C to +150C and a tolerance of 1%, making it suitable for high precision or measurement applications. The resistor has a dielectric strength of 300VAC and a pulse strength of 20W/10sec. Its maximum power rating (at 25C ambient temperature) is 1W.

Configuration

The KNP1WSJR-52-91R is through-hole, meaning it is mounted directly on a circuit board. It uses a two-pin, screw terminal configuration. This configuration ensures a secure connection and allows easy adjustment or replacement when needed.

Working Principle

The basic principle of the KNP1WSJR-52-91R is the conversion of electric current into heat. As electricity flows through the unit, the material of the resistor generates and dissipates heat. As the Joule-thompson effect states: when a gas enters a region with different pressure, its temperature will also change. The same applies to the resistor—when the push force of the voltage is higher than the resistance, a greater amount of heat is generated. This is why resistors with higher resistance and higher voltage ratings produce more heat. The amount of current passing through the resistor is determined by its resistance and the voltage of the circuit.

Advantages of Through Hole Resistors

Through hole resistors offer several advantages over other types such as SMD or chip resistors. They are more accurate, stable, and precise than their counterparts. Through hole resistors also provide higher power ratings and increased thermal stability, which helps them withstand extreme temperatures and withstand electrical shock. Furthermore, their build structure allows them to be replaced and adjusted without having to replace the whole component.

Conclusion

The KNP1WSJR-52-91R is a popular choice for precision and higher power consumption applications. Its two-pin, screw terminal configuration, versatile size and value range, and operating temperature range make it ideal for a variety of applications. This type of through hole resistor offers numerous advantages over other types, such as accuracy, stability, higher thermal stability and higher power ratings. Overall, the KNP1WSJR-52-91R is a reliable and cost-effective choice for using in high precision and/or electrical shock applications.

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