RER45F12R1RC02

Operating Temperature:	-55°C ~ 250°C
Failure Rate:	R (0.01%)
Package / Case:	Axial, Box
Lead Style:	Solder Lugs
Height - Seated (Max):	0.405" (10.29mm)
Size / Dimension:	0.750" L x 0.800" W (19.05mm x 20.32mm)
Mounting Feature:	Flanges
Coating, Housing Type:	Aluminum
Features:	Military, Moisture Resistant, Non-Inductive
Series:	Military, MIL-PRF-39009, RER45
Temperature Coefficient:	±50ppm/°C
Composition:	Wirewound
Power (Watts):	10W
Tolerance:	±1%
Resistance:	12.1 Ohms
Part Status:	Active
Packaging:	Bulk

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Chassis Mount ResistorsRER45F12R1RC02 Resistor is a type of chassis mounted resistor specially designed to protect electronic devices from damage caused by thermal overload, short-circuiting or other anomaly. It is typically used in automotive, audio and telecommunication applications. The resistor uses a special type of resistor called a Polymer Positive Temperature Coefficient (PPTC) resistor which increases in resistance as temperature increases.The RER45F12R1RC02 consists of a PPTC resistor, a fuse element, a temperature detector and an optional thermal diagnostic switch. The PPTC resistor is a thin film resistor composed of a blend of polymers and organic compounds. The resistor works by increasing its electrical resistance as temperature increases, preventing short circuits and providing current limitation until the FET (Field-Effect Transistor) overload device kicks in to protect your device.The integrated fuse element provides maximum protection and reliability. The integrated temperature detector helps the resistor stay within its rated temperature limit. It can also be used to indicate an overtemperature condition or an excessive current condition. The optional thermal diagnostic switch can be used to trigger an alarm or instruction in the event of an abnormally high temperature or current.When the resistor is in operation, its resistance changes depending on the temperature. This is because the resistive polymer material used in the PPTC resistor responds to temperature changes. As the temperature rises, the resistance of the resistor increases. As the temperature decreases, the resistance decreases. This temperature-dependent properties of the resistor makes it ideal for protecting electronic devices from thermal and current overload.In conclusion, the RER45F12R1RC02 is a type of chassis mounted resistor designed to protect electronic devices from thermal and current overload. The resistor works by increasing its electrical resistance as temperature increases, preventing short circuits and providing current limitation until the FET overload device kicks in. It is usually used in automotive, audio and telecommunication applications. It is composed of a blend of polymers and organic compounds and has an integrated fuse element and temperature detector. The resistor also has an optional thermal diagnostic switch for indicating an abnormal temperature or current conditions.

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