FNIRSI LCR-ST2 Plus

One of the key advantages of this model is its dual measurement capability, combining precision SMD tweezers with a 4-wire Kelvin test fixture, along with automatic component identification and professional LCR/ESR measurements up to 100 kHz. The FNIRSI LCR-ST2 Plus is a high-performance portable LCR meter designed for accurate measurement of resistors, capacitors, inductors, diodes, and voltage. It supports five test frequencies, four test voltage levels, full frequency sweep analysis, component sorting by tolerance, and automatic switching between series and parallel equivalent circuit models. Thanks to its speed and accuracy, it is an excellent choice for electronics repair, laboratories, quality control, and component selection.

Functions

• Measurement of resistors, capacitors, inductors, and diodes
• ESR, D, Q, Z, X, and phase angle (θ) measurement
• Automatic R/C/L component identification
• Five test frequencies: 100 Hz, 120 Hz, 1 kHz, 10 kHz, and 100 kHz
• Four test voltage levels: 0.1 V, 0.3 V, 0.6 V, and 1.0 V RMS
• Full frequency sweep analysis (100 Hz–100 kHz)
• Component sorting by tolerance (OK/NG)
• Automatic series and parallel equivalent circuit selection
• Simultaneous display of two measurement parameters
• HOLD, MAX, and MIN functions
• ±30 V voltage measurement
• Automatic screen rotation
• 1.47" HD color display
• Two measurement modes:
  • SMD tweezer mode
  • 4-wire Kelvin test fixture
• Replaceable straight and curved probe tips
• Magnetic housing for convenient storage
• Built-in rechargeable lithium battery
• USB Type-C charging

Technical Specifications

• Model: LCR-ST2 Plus
• Application: Professional LCR and ESR meter with SMD tweezers and 4-wire Kelvin fixture
• Display: 1.47" HD color LCD
• Resistance measurement range: 10 mΩ–10 MΩ
• Capacitance measurement range: 1 pF–22 mF
• Inductance measurement range: 1 μH–10 H
• Diode test voltage: Up to 0.7 V
• Voltage measurement: ±30 V
• Measured parameters:
  • R
  • L
  • C
  • ESR
  • D
  • Q
  • Z
  • X
  • θ
• Test frequencies:
  • 100 Hz
  • 120 Hz
  • 1 kHz
  • 10 kHz
  • 100 kHz
• Test voltage levels:
  • 0.1 V RMS
  • 0.3 V RMS
  • 0.6 V RMS
  • 1.0 V RMS
• Measurement modes:
  • Automatic
  • Frequency Sweep
  • Component Sorting
• Equivalent circuit models:
  • Series
  • Parallel
• Battery: 300 mAh rechargeable lithium
• Operating time: Up to 3 hours
• Charging: USB Type-C
• Operating temperature: 0 °C to +50 °C
• Storage temperature: –20 °C to +60 °C
• Dimensions: 31 × 170.7 × 20.3 mm
• Weight: Approx. 60.8 g

Package Contents

• FNIRSI LCR-ST2 Plus Smart Tweezers
• 4-wire Kelvin test fixture
• Set of curved probe tips
• Short-circuit calibration board
• USB Type-C cable
• Carrying case
• User manual
• Packaging