RER75F4221RCSL

Series:	Military, MIL-PRF-39009, RER75
Packaging:	Bulk
Part Status:	Active
Resistance:	4.22 kOhms
Tolerance:	±1%
Power (Watts):	30W
Composition:	Wirewound
Temperature Coefficient:	±20ppm/°C
Operating Temperature:	-55°C ~ 250°C
Features:	Military, Moisture Resistant
Coating, Housing Type:	Aluminum
Mounting Feature:	Flanges
Size / Dimension:	1.968" L x 1.140" W (49.99mm x 28.96mm)
Height - Seated (Max):	0.625" (15.87mm)
Lead Style:	Solder Lugs
Package / Case:	Axial, Box
Failure Rate:	R (0.01%)

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Chassis Mount Resistors – RER75F4221RCSL Application Field and Working Principle

Chassis mount resistors are commonly used in automotive, aviation, and military electronics. They are used for various purposes, such as to control the flow of current, and provide electrical insulation in a circuit. The RER75F4221RCSL is a type of chassis mount resistor, designed for use in DC power systems, signal circuits, and control circuits.The RER75F4221RCSL consists of a resistive element, usually a metal film formed on a ceramic or glass substrate, and a collection of housing parts for mounting the element in a chassis or control panel. The substrate is covered with a protective coating, such as a thermoplastic or epoxy resin, to protect the element and contacts from vibration, moisture, and corrosion. The contacts are usually stamped metal tabs, or printed circuit boards, and are connected to voltage and ground for power connections. The combination of the substrate, coating, and contacts provide the necessary mechanical strength and electrical insulation to support the resistive element.The working principle of the RER75F4221RCSL is similar to that of other chassis mount resistors. When a voltage is applied to the resistor, it produces a current, which is proportionate to the resistance value. This current is then used to regulate the flow of electricity, provide electrical insulation, limit current, or act as a heat sink in order to protect against short circuits.The resistance value of the RER75F4221RCSL is adjustable, making it ideal for use in applications where an exact resistance value is required. The resistor can be easily adjusted by changing the number of turns on the winding coils, or by using a potentiometer.The RER75F4221RCSL is also highly reliable and durable. It is rated at 75 watts, making it suitable for use in high-power applications. The resistor also has a wide operating temperature range, from -55 to +125°C, and is designed to meet automotive and aerospace industry standards.In summary, the RER75F4221RCSL is a type of chassis mount resistor designed for use in DC power systems, signal circuits, and control circuits. It consists of a resistive element, usually a metal film formed on a ceramic or glass substrate, and a collection of housing parts. When a voltage is applied to the resistor, it produces a current, which is proportional to the resistance value. The resistance value of the RER75F4221RCSL is adjustable, making it ideal for use in applications where an exact resistance value is required. The resistor is highly reliable and durable, rated at 75 watts and with a wide operating temperature range.

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