The FMK precision resistor series is part of the new FMx resistor family from Isabellenhütte, This resistor series offers chip size of 1206, very good long-term stability and low thermoelectric voltages. The available resistance values are 0.001Ω, 0.002Ω, 0.003Ω, 0.004Ω, 0.005Ω and 0.006Ω, with selection of tolerances of ±1% and ±5%, and temperature coefficient under <50 ppm/K. The FMK series from Isabellenhütte also features a constant current of up to 60A (0.001Ω), power rating of up to 4W (at 70°C) and is suitable for both reflow and IR soldering. These resistors are designed to be AEC-Q200 qualified (status pending). Their operating temperature range is between -65°C and +170°C.
Current sensing resistor
Continuous current load up to 60A (0.001Ω)
Surface-mount
Available resistance values of 0.0015Ω, 0.002Ω, 0.003Ω, 0.004Ω, 0.005Ω, and 0.006Ω,
TCR value of <50 ppm/K (between +20°C and +60°C)
Applicable temperature range from -65°C to +170°C
Tolerance ±1.0% and ±5.0%
Excellent long term stability
Power rating up to 4W at 70°C (depending on the resistance value required)
Suitable for IR and reflow soldering
Conforms to AEC-Q200 (qualification pending)
Typical applications for the FMK series include:
Current sensor for power hybrid applications
Control systems for the automotive market
Frequency converters and power modules
Switch mode power supplies
The below table gives an overview of the specifications for the Isabellenhütte FMK series:
This product meets the requirements in compliance with RoHS Directive 2011/65/EU including Directive (EU) 2015/863, on the restriction of the use of Certain Hazardous Substances in Electrical and Electronic Equipment.
Isabellenhütte FMK Series Ordering Info
The FMK resistor series is available with various options including standard resistance values and tolerances. The information below gives an example of the part numbering system used for these resistors and the standard options available.
Below is an example of the part number break down for the FMK resistor series:
The following table highlights the standard resistance values, tolerances, tcr's and power ratings available for the FMK resistor series:
Material type: M = MANGANIN®, V = NOVENTIN® Z = ZERANIN®30 * Values in preparation
Isabellenhütte FMK Series Technical Library
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