
MFA 01 set
Micro Probes 1 MHz up to 6 GHz
The MFA 01 set includes high-resolution near-field micro probes used to measure magnetic fields up to 6 GHz, e.g. at signal conductors (150 µm), SMD components (0603-0201), or IC pins. Each hand-guided MFA near-field micro probe has an integrated preamplifier.
The amplifier stage (9 V, 100 mA) is powered via the bias tee BT 706, which has an impedance of 50 Ohm. The near-field micro probes are connected via the BT 706 to a spectrum analyzer or an oscilloscope.
Langer EMV-Technik GmbH includes correction lines in the delivery. With the help of the correction lines the probe’s output voltage is converted into either the respective magnetic field or the current running through the conductor.

MFA 02 set
Micro Probes 1 MHz up to 1 GHz
The MFA 02 set includes two high-resolution near-field micro probes used to measure low-frequency magnetic fields up to 1 GHz, e.g. at signal conductors (150 µm), SMD components (0603-0201) or IC pins. Each hand-guided MFA near-field micro probe has an integrated preamplifier.
The amplifier stage (9 V, 100 mA) is powered via the BT 706 bias tee, which has an impedance of 50 Ohm. The near-field micro probes are connected via the BT 706 to a spectrum analyzer or an oscilloscope.
Langer EMV-Technik GmbH includes correction lines in the scope of delivery. With the help of the correction lines the probe’s output voltage is converted into either the respective magnetic field or the current running through the conductor.

MFA-R 0.2-6
Near-Field Micro Probe 100 MHz up to 6 GHz
The MFA-R 0.2-6 near-field micro probe has an extremely small and high resolution probe head. It is suitable for measuring RF magnetic fields up to 6 GHz on components, e.g. close to IC pins, finest conducting paths or smallest SMD components (0603-0201).
The MFA-R 0.2-6 is an active magnetic field micro probe that requires the BT 706 bias tee to operate. In principle, it has the same structure as the MFA-R 0.2-75, differing only in its frequency response.
The coil opening at the probe head is laterally marked with black dots. The near-field micro probe is small and handy. It has a current attenuating sheath and is electrically shielded.
An amplifier stage is integrated into the probe head. The amplifier stage (9 V, 100 mA) is powered via the bias tee. It has an impedance of 50 Ω. The near-field micro probe is connected to a spectrum analyzer or oscilloscope with a 50 Ω input via the BT 706 bias tee. A power supply unit and the bias tee are included in the scope of delivery.
With the help of the correction lines, the probe’s output voltage is converted into either the respective magnetic field or the current running through the conductor.

MFA-R 0.2-75
Near-Field Micro Probe 1 MHz up to 1 GHz
The MFA-R 0.2-75 near-field micro probe has an extremely small and high resolution probe head. It is suitable for measuring RF magnetic fields up to 1 GHz on components, e.g. close to IC pins, finest conducting paths or smallest SMD components (0603-0201).
The MFA-R 0.2-75 is an active magnetic field micro probe that requires the BT 706 bias tee to operate. In principle, it has the same structure as the MFA-K 0.2-6, differing only in its frequency response.
The coil opening at the probe head is laterally marked with black dots. The near-field micro probe is small and handy. It has a current attenuating sheath and is electrically shielded.
An amplifier stage is integrated into the probe head. The amplifier stage (9 V, 100 mA) is powered via the bias tee. It has an impedance of 50 Ω. The near-field micro probe is connected to a spectrum analyzer or oscilloscope with a 50 Ω input via the BT 706 bias tee. A power supply unit and the bias tee are included in the scope of delivery.
With the help of the correction lines, the probe’s output voltage is converted into either the respective magnetic field or the current running through the conductor.

MFA-K 0.1-12
Near-Field Micro Probe 100 MHz up to 6 GHz
The MFA-K 0.1-12 near-field micro probe has an extremely small probe head which functions like a coupling clamp. It allows for current measurements at IC pins and the finest conducting paths. The near-field micro probe is shielded from field lines entering the probe head laterally.
The hand-guided, high resolution MFA-K 0.1-12 is an active near-field micro probe that requires the BT 706 bias tee to operate. The near-field micro probe is used to measure magnetic fields up to 6 GHz especially at signal conductors (150 µm) or IC pins. In principle it has the same structure as the MFA-K 0.1-30, differing only in its frequency response.
Due to the special probe head design, magnetic fields which impinge the probe head laterally, e.g. from adjoining conductors, are not detected.
The direction of the coil is marked on the probe head with a black dot.
An amplifier stage is integrated into the probe head. The amplifier stage (9 V, 100 mA) is powered via the bias tee. It has an impedance of 50 Ω. The near-field micro probe is connected to a spectrum analyzer or oscilloscope with a 50 Ω input via the BT 706 bias tee. A power supply unit and the bias tee are included in the scope of delivery.
With the help of the correction lines, the probe’s output voltage is converted into either the respective magnetic field or the current running through the conductor.
The near-field micro probe is small and handy. It has a current attenuating sheath and is electrically shielded.

MFA-K 0.1-30
Near-Field Micro Probe 1 MHz up to 1 GHz
The MFA-K 0.1-30 near-field micro probe has an extremely small probe head which functions like a coupling clamp. It allows for current measurements at IC pins and the finest conducting paths. The near-field micro probe is shielded from field lines entering the probe head laterally.
The hand-guided, high resolution MFA-K 0.1-30 is an active near-field micro probe that requires the BT 706 bias tee to operate. The near-field micro probe is used to measure magnetic fields up to 1 GHz especially at signal conductors (150 µm) or IC pins.
In principle it has the same structure as the MFA-K 0.1-12, differing only in its frequency response.
Due to the special probe head design, magnetic fields which impinge the probe head laterally, e.g. from adjoining conductors, are not detected.
The direction of the coil is marked on the probe head with a black dot.
An amplifier stage is integrated into the probe head. The amplifier stage (9 V, 100 mA) is powered via the bias tee. It has an impedance of 50 Ω. The near-field micro probe is connected to a spectrum analyzer or oscilloscope with a 50 Ω input via the BT 706 bias tee. A power supply unit and the bias tee are included in the scope of delivery.
With the help of the correction lines, the probe’s output voltage is converted into either the respective magnetic field or the current running through the conductor.
The near-field micro probe is small and handy. It has a current attenuating sheath and is electrically shielded.
The MFA near-field probes are not suitable for RF coupling (injection)!The MFA microprobes are active near-field probes, i.e. they have an integrated pre-amplifier. With a measurement resolution range up to 300 µm, these probes are particularly suitable for measuring RF magnetic fields in very small areas on the assembly, e.g. IC pins, the thinnest conducting paths, or smallest SMD components (0603-0201).
Download Correction Characteristics
You can download the correction data for our special magnetic field probe types as xlsx-file.
MFA probes
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Quality features of Langer near-field probes
Overview all near-field probes Langer EMV-Technik GmbH