RN50E2491BB14

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Through Hole Resistors are one of the most common types of resistors and can be found in many electronic components. RN50E2491BB14 is such one through hole resistor manufactured by Yageo. It offers good performance and flexibility for various applications.

RN50E2491BB14 is a melf resistor which is a cylindrical, thin-film type resistor also known as side-brazed resistor. Its case is a glass-sealed cylinder with a diameter of 2.2 mm and a height of 3.9 mm, colored in black. It has a power rating of 1/8 Watt at 70°C, a tolerance of ±1%, and a working temperature range of -55°C ~ +155°C. Its resistance value range is 2491 Ohms ±1%. The operating voltage of RN50E2491BB14 is also quite satisfactory, being 150 V (DC) or 100 V (AC).

RN50E2491BB14 application field can mainly be devided into two categories, based on their power rate: high power resistors and small signal resistors. High power resistors, whose power rate is 1/2 W or more, are suitable for applications such as limiting current, protecting circuits by preventing voltage slewing, assisting in matching circuits, making transformers and inductors, and battery chargers. Small signal resistors, whose power rate is smaller than 1/2 W, are used as part of communication circuits, power supply circuits, and filter circuits, among other applications.

The working principle behind the RN50E2491BB14 relies on its unique physical construction. This resistor’s material consists of a metal film resistor wrapped with a special insulator. The metal films are laid on an insulating ceramic substrate, which is then cut into small pieces and sealed in a cylindrical (melf) case. The metal film resistor is further composed of metal film, resistive paste, and solderable surface. When a voltage is applied to this resistor, the current flows through the metal film and its resistive paste, creating a voltage drop determined by the applied voltage, the resistance value, and the current.

Ultimately, RN50E2491BB14 is a top-quality resistor from Yageo, offering flexibility in application and great performance. It is suitable for high power and small signal applications and has the ability to cope with temperature fluctuations. Furthermore, the use of metal film combined with high-grade resistive paste ensures that the resistor is able to maintain its consistency over a long period of time.

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