TJT30015RJ

Operating Temperature:	-25°C ~ 250°C
Failure Rate:	--
Package / Case:	Rectangular Case
Lead Style:	Wire Leads
Height - Seated (Max):	0.394" (10.00mm)
Size / Dimension:	8.278" L x 3.150" W (210.00mm x 80.00mm)
Mounting Feature:	Screw Holes
Coating, Housing Type:	Aluminum
Features:	--
Series:	TJT
Temperature Coefficient:	±260ppm/°C
Composition:	Wirewound
Power (Watts):	300W
Tolerance:	±5%
Resistance:	15 Ohms
Part Status:	Active
Packaging:	Bulk

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Chassis Mount Resistors: TJT30015RJ Application Field and Working Principle The TJT30015RJ series of resistors are chassis-mount resistors offered by Yageo, a Taiwanese maker of electronics components. The purpose of these resistors is to provide resistance in relation to different types of circuitry, and they are extensively used in various applications within the broadcast, communications, control, HVAC, industrial, instrumentation and power sectors. This article provides an overview of the TJT30015RJ application field and working principle. Applications Chassis mount resistors are used in many different kinds of applications including those involving resistors that are built into the circuitboards of larger electronics. The TJT30015RJ series consists of high-powered resistors with power ratings ranging from 75-120 watts. This makes them suitable for power applications such as power supplies and motor controls. Their high power ratings combined with their better-than-average moisture and humidity protection also make them suitable for outdoor applications as well. The TJT30015RJ series is made from aluminum wiring, which makes them highly suitable for audio applications as well. They are also applicable in automotive and aerospace applications, where their strong construction and good power ratings are of utmost importance. They can also be used in medical equipment, where their high power ratings and excellent moisture and humidity protection is important for keeping delicate equipment safe. Working Principle Chassis mount resistors work by providing resistance to the current defined by the ohmic resistance implied by their design. They provide resistance to the current in two distinct ways; electrical resistance and thermal resistance. The electrical resistance of these resistors is calculated based on the length, the material of the wire and the diameter of the resistive element. This formula gives the ohmic values that determine the current restriction of the resistor, allowing the end user to determine the amount of current to be allowed through the resistor. The thermal resistance of the resistor is measured by the thermal coefficient, which is the amount of temperature increase that is caused by the electrical current the resistor will experience. The thermal coefficient will influence how much power can be dissipated through the resistor, for example, a 100W resistor could provide up to 150W for a thermal resistance of 0.0275°C/W. In addition to these, other factors that affect the performance of the resistor include the geometry of the mounting, the body temperature, the mounting height, the positioning of the resistor, the amount of ventilation applied and the shape of the electrical signal applied. Conclusion The TJT30015RJ series of resistors offered by Yageo are highly suitable for many different applications due to their strong construction, good power ratings, and excellent moisture and humidity protection. Utilizing the ohmic value and the thermal coefficient of resistance, users can account for the current, the heat generated, and the electrical signal applied when designing the product. The TJT30015RJ series resists can be used in applications ranging from medical to automotive, and aerospace, to audio applications.

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