HS250 R68 F

Operating Temperature:	--
Failure Rate:	--
Package / Case:	Axial, Box
Lead Style:	M6 Threaded
Height - Seated (Max):	1.646" (41.80mm)
Size / Dimension:	4.319" x 1.791" (109.70mm x 45.50mm)
Mounting Feature:	Flanges
Coating, Housing Type:	Aluminum
Features:	--
Series:	ARCOL, HS
Temperature Coefficient:	±100ppm/°C
Composition:	Wirewound
Power (Watts):	250W
Tolerance:	±1%
Resistance:	680 mOhms
Part Status:	Active
Packaging:	Bulk

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Chassis Mount Resistors
HS250 R68 F is a chassis-mounted resistor designed to provide high-efficiency circuit protection in a very small package. It is commonly used in military, aerospace, and automotive applications. It has a wide operating temperature range, ranging from -55°C (±5°C) to 175°C (±5°C). Due to its unique SAW technology, it offers superior immunity to EMC/EMI and is suitable for sensitive electronics.
Application Field
HS250 R68 F is most commonly used in military, aerospace, and automotive applications. It is suitable for applications which require high accuracy, high temperature operation, and high power density. It has been tested and approved for these types of applications. It is also suitable for LED lighting, security cameras, and other sensitive electronics which require high EMI immunity. Furthermore, it has a self-healing feature which allows it to reset after receiving excessive power or thermal pulses.
Working Principle
The HS250 R68 F operates on a three-layer mechanism. Its inner layer consists of a metal film resistor surrounded by a heat-resistant glass ceramic insulation. The inner layer is then sealed and covered in a dielectric film. The middle layer is composed of a high-grade ceramic dielectric material. Finally, the outer layer consists of an epoxy resin and a conductive geometry that electrically ties the two layers together. This three-layer structure provides the extreme accuracy, high-temperature operation, and high power density which make the HS250 R68 F suitable for sensitive electronics.
The HS250 R68 F is able to withstand fluctuations in voltage due to its metal film construction and thick dielectric layer. This ensures that the resistor operates within a safe range of voltage. Moreover, due to its self-healing feature, it can reset after receiving excessive power or thermal pulses, thus avoiding the risk of overloading the circuit. In addition, the device also features a high power rating for increased performance and reliability.
The HS250 R68 F has been designed to meet the requirements of military, aerospace, and automotive applications. It is able to provide superior circuit protection in a very small package. Due to its unique SAW technology, it offers excellent immunity to EMC/EMI and is suitable for sensitive electronics. Furthermore, it has a wide operating temperature range, making it suitable for extreme temperature conditions. This combination of features makes the HS250 R68 F an ideal chassis-mounted resistor for a wide range of military, aerospace, and automotive applications.

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