CMF55600R00FKR6 – Vishay CMF55 Industrial Metal Film Resistor (600 Ohm)
Available now for high-reliability industrial and aerospace electronics.
Overview Section
The Vishay Dale CMF55600R00FKR6 is a high-performance Metal Film Resistor from the renowned CMF series (Industrial/Military grade). This axial-leaded component is engineered for precision applications where stability, low noise, and tight tolerances are critical. The CMF55 series is a dual-rated component, often meeting or exceeding MIL-R-10509 (Type RN55) and MIL-PRF-22684 (Type RL07) standards.
The part number indicates a 600 Ohm resistance with a 0.5 Watt (1/2W) power rating at 70°C. Its metal film construction provides a significantly lower temperature coefficient and superior moisture resistance compared to standard carbon film resistors, making it a staple in professional-grade instrumentation and flight-deck avionics.
Key Features Section
Metal Film Technology: Provides superior electrical stability and high-frequency performance with extremely low noise levels.
Precision Tolerance: Rated at +/- 1% (F), ensuring high accuracy in voltage dividers and signal conditioning circuits.
Low Temperature Coefficient: Rated at 100 ppm/°C, meaning the resistance remains stable even as the operating environment heats up.
Flame Retardant Coating: Features a high-quality epoxy coating that provides excellent moisture protection and flame retardancy.
Dual Power Rating: Optimized to handle 0.25W at 125°C or 0.5W at 70°C, offering flexibility for high-density or high-temperature board designs.
Axial Leaded Design: Standard through-hole mounting configuration with solderable tinned copper leads.
Technical Specifications Section
Part Number: CMF55600R00FKR6
Alternate Part Number: CMF600HZTR-ND
Resistance Value: 600 Ohms
Power Rating: 0.5 Watt (1/2W) at 70°C
Tolerance: +/- 1%
Temperature Coefficient: 100 ppm/°C
Voltage Rating: 250 Volts (Maximum working voltage)
Operating Temperature Range: -55°C to +175°C
Case Size: CMF55 (Industry equivalent to RN55)
Termination Style: Axial
Dimensions: Body length 0.240 inches (6.10mm); Body diameter 0.090 inches (2.29mm).
Packaging: Taped and Reeled (R6 suffix) for automated assembly.
Applications Section
Avionics and Aerospace: Used in flight control computers and sensor interfaces where drift-free performance is required.
Medical Instrumentation: Precision signal processing in diagnostic equipment.
Industrial Controls: High-stability reference circuits for process automation.
Audio Equipment: Low-noise signal paths in high-fidelity pre-amplifiers and mixing consoles.
Why Choose the Vishay CMF55 Series?
The CMF55600R00FKR6 is chosen when "standard" commercial resistors are insufficient. In precision electronics, "Resistance Drift" is a primary failure mode; over time, heat and humidity can cause a resistor's value to change. The CMF55's specialized metal film is vacuum-deposited onto a high-grade ceramic core and then laser-trimmed to its final value. This process results in a component that maintains its 600 Ohm value despite years of thermal cycling and vibration. For aerospace and industrial users, this translates to fewer calibration cycles and higher system reliability.
The technical advantage of the CMF55600R00FKR6 lies in its very low noise figure. Metal film resistors generate significantly less "thermal noise" (Johnson noise) than carbon composition types. This makes them ideal for the "front-end" of sensitive amplifiers where the signal-to-noise ratio is paramount. Additionally, the axial leads are oxygen-free copper with a solderable coating, ensuring that the mechanical connection to the PCB does not introduce parasitic resistance or thermocouple effects that could skew measurements in high-precision circuits.
Note: The CMF55600R00FKR6 is a precision electronic component. During hand-soldering, use a heatsink on the leads to prevent the internal metal film from being damaged by excessive heat. Always verify the wattage requirements of your circuit to ensure the 0.5W rating is not exceeded under worst-case load conditions.
Documentation
Vishay CMF Industrial Series Datasheet: Contains full derating curves and environmental test data.
MIL-R-10509 Compliance Data: Available for projects requiring military-equivalent reliability standards.