OL2745E-R52

Series:	Little Rebel® OL
Packaging:	Tape & Reel (TR)
Part Status:	Active
Resistance:	270 kOhms
Tolerance:	±5%
Power (Watts):	0.5W, 1/2W
Composition:	Carbon Film
Features:	--
Temperature Coefficient:	-700ppm/°C
Operating Temperature:	--
Package / Case:	Axial
Supplier Device Package:	Axial
Size / Dimension:	0.118" Dia x 0.354" L (3.00mm x 9.00mm)
Height - Seated (Max):	--
Number of Terminations:	2
Failure Rate:	--

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Introduction

Through hole resistors are the most common type of resistors available, and the OL2745E-R52 is an excellent example, adapted for many applications. These designs are compact in size and cost-effective, featuring accuracy and power handling capacity. Resistance values range from a few ohms to tens of megohms. The OL2745E-R52 in particular offers superior temperature stability and long-term reliability.

Application Field

The OL2745E-R52 is used as a surface mount resistor (SMR) which is applicable to many industrial automation and communication applications, such as Avionics Systems, Process Automation, Industrial Computing, and Network Systems. It is specifically designed for use in high-speed applications, heat dissipation, and precision measurement and control.Given its good power dissipation and wide temperature range, the OL2745E-R52 is suitable for DC-DC converters, diode bridges, voltage regulators, or any circuit requiring precise control of resistive parameters. These parameters can be controlled by adjusting the resistance value by varying the number of resistors or through various methods of resistance trimming.The OL2745E-R52 is also suitable for RF shielding and EMI suppression. This range of resistors is also compatible with digital systems, and is extremely reliable for its intended purpose.

Working Principle

Working on the principle of electrical resistance, the OL2745E-R52 is comprised of a metal-oxide film layer on a ceramic substrate. The resistance between the two electrodes is determined by the material, size, and thickness of the film layer. This layer is altered by carefully adjusting the temperature in order to achieve the desired resistance value. The resistance of the device remains relatively constant over a wide temperature range.The resistance value of the OL2745E-R52 can be reduced by using thinner films or larger sizes, and increased by thicker films and smaller sizes. This allows the design to be tailored to meet individual application requirements with greater accuracy and precision.The OL2745E-R52 is also equipped with a variety of heat radiation mechanisms, which boost its performance in high temperature conditions. These mechanisms are also effective in protecting against environmental factors such as humidity, dust, and dirt.

Conclusion

Through hole resistors are the most common type of resistors used in electronic systems, and the OL2745E-R52 is a great example of a well-crafted and reliable design. Featuring superior temperature stability, high accuracy, and wide versatility, this model is suitable for a wide range of applications, including high-speed transmissions, power dissipation, and precision measurement and control.

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