Precision You Can Trust
NABL-Accredited Calibration | Available on Request
The FireFly® Series is a revolutionary high-voltage, optically isolated probe system delivering ultra-high bandwidth (>1.5 GHz), best-in-class CMRR (>180 dB), and ±60 kV common-mode voltage handling — making it the ultimate choice for GaN/SiC V<sub>GS</sub> measurements, high-side probing, and system-level high-speed power device evaluation.
The FireFly® Series stands at the forefront of isolated high-speed probing technology, specifically engineered for GaN/SiC power device characterization. It excels in scenarios that require accurate measurement of small differential signals in the presence of extremely high common-mode voltages, offering >180 dB CMRR, unmatched by any traditional differential probe system.
Its compact angled probe head not only allows access to tight board layouts but also improves signal integrity by enabling the use of shorter probe tips. The optical isolation between probe head and interface guarantees safety and noise immunity for sensitive high-side gate measurements.
The probe connects via a universal BNC interface, ensuring seamless integration with any oscilloscope. It is powered by an industry-standard 18650 battery offering up to 30 hours of continuous use. Remote configuration and deskewing are enabled through PMK's USB/LAN-compatible power supplies (2ch PS2 or 4ch PS3). For portable needs, the AP-01 battery pack provides >8h isolated operation.
Designed for professional use in automotive, aerospace, power electronics, and semiconductor R&D, FireFly® is a no-compromise tool that redefines what’s possible in high-voltage probing.
Bandwidth >1.5 GHz with <300 ps rise time
±60 kV common-mode voltage capability
CMRR: >180 dB (DC to 500 kHz), 80 dB at 1 GHz
Ultra-low temperature drift: <0.05%/°C
Compact angled probe head with short tip cables
Multiple interchangeable input tips (MMCX, square pins, etc.)
Universal BNC output – works with any 50 Ω or 1 MΩ oscilloscope
Completely galvanically isolated – safe for high-side V<sub>GS</sub> probing
Quiet operation – fanless design
Long operation: Up to 30 hours with 18650 rechargeable battery
Remote control via PMK power supply (USB/LAN)
Bandwidth: >1.5 GHz
Rise Time: <300 ps
CMRR:
180 dB (DC to 500 kHz)
80 dB at 1 GHz
Common Mode Voltage: ±60 kV
Differential Input Tips: Wide range (MMCX, square pins, etc.)
Output Interface: Universal BNC (50 Ω or 1 MΩ with feed-through)
Power Supply:
Probe Head: 18650 battery (up to 30 h operation)
Interface: PMK PS2/PS3 (USB/LAN) or AP-01 battery pack
Temperature Drift: <0.05%/°C
Deskew: Each probe calibrated for individual propagation delay
Control:
Manual (on interface box)
Remote (USB/LAN via PMK PSU)
Use Cases:
GaN/SiC high-side V<sub>GS</sub> measurement
Power stage and system-level validation
Gate driver development
Fast-switching device analysis
Calibration: ISO17025 available on request (initial or re-certification)