Smart Tweezers ST5S Kit w/ additional test leads - ST52SAD-KH

Brand:   Smart Tweezers
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Smart Tweezers

Smart Tweezers ST5S Kit w/ additional test leads - ST52SAD-KH

Professional Handheld Tweezers

Kit # ST52SAD-KH includes:

  • ST52SAD unit
  • Swiss-made straight test leads (installed)
  • hard carrying case
  • Universal 110-240V wall charger
  • Micro USB cable for charging from a USB port
  • additional pair of high-precision tweezer test leads (straight, Swiss-made)

Smart Tweezers™ is a handheld electronic tool of a new concept. Its unique design combines a pair of gold-plated SMD tweezers with ergonomic shielded handles and a precise full featured LCR impedance meter in a compact, lightweight instrument. Smart Tweezers™ measures electronic component’s capacitance, resistance and inductance with high speed and precision by evaluating circuit impedance. Additionally it tests diodes, measures ESR and impedance Z. Smart Tweezers™ provides a perfect solution for testing and identification of Surface Mount Devices (SMD) as well as for troubleshooting of complex electronic systems.

What's New?

  • Up to 6 times improved measurement precision:
    - 0.2% for C, 0.2% for R, 0.5% for L
  • Test signal levels 0.5 and 1.0 Vrms
    - 1.0Vrms allows precision measurements of X5R and similar ceramic capacitors
  • Low signal level helps in-board testings
  • Dedicated ESR and Z modes
  • Math null function stores measurement offset
  • Tolerance function with audible indicator for component sorting
  • Swiss-made test leads
  • Multi-parameter dashboard display
  • 4-directional navigation control with quick mode selector
  • Integrated Rechargeable Li-Ion battery
  • Universal USB/Wall charger is included

Handy Tool for Tiny SMD Components

  • Surface mount devices are usually tiny and without wire leads, making it more difficult to test and identify SMD than conventional components. Smart Tweezers™ gives users an easy way to sort and evaluate loose components and to perform on-board measurements and debugging. Precise gold-plated leads made by IDEAL-TEK S.A. of Switzerland are able to reliably contact SMD components (as small as 0201 format) or take measurements from the devices already mounted on a board.

Capacitor ESR Meter Mode

  • Smart Tweezers™ feature a ESR Meter/Tester mode for quality testing of high value capacitors.

Perfect for Conventional Components

  • Smart Tweezers™ works fine with conventional though-hole electronic components. The unit helps to verify values with high speed and precision.

Built-in Li-Ion Polymer Rechargeable battery

  • Smart Tweezers™ comes equipped with a built-in high-capacity Li-Ion rechargeable battery. Battery replacements are not required.
  • Universal 110-220V power supply and Micro USB charging cord are included.

Automatic Component Recognition

  • Resistance, capacitance and inductance can be measured with automatic selection of the test parameters and test range. Smart Tweezers™ automatically determines type of the component (resistance, capacitance or inductance), selects proper range and signal frequency for highest accuracy measurements. Manual overrides are available as well. Unit’s display clearly indicates the type of the component, measurement result and test conditions. The primary display shows the present reading. The secondary display (on top) shows the present reading of additional parameters or measurement conditions when the primary display shows some other feature (L, C).

Continuity/Open Test, Diode Polarity Testing, Additional Parameters and Modes

  • Smart Tweezers™ LCR meter allows to test various component types, including secondary components of Dissipation Factor (D), Quality Factor (Q). The built-in Equivalent Series Resistance (ESR) mode helps you better understand the inherent resistance — behavior typically found in capacitors across selected frequencies. In its DIODE mode Smart Tweezers™ tests diode polarity and indicates if it is short. Smart Tweezers™ has a continuity detector. Variable beeper sounds for resistance reading below set thresholds. Additionally, this function helps to locate shorted conductors (e.g. on a PCB). In manual modes Smart Tweezers™ measures a specific circuit parameter: L, C, R, Z or ESR. Manual modes also improves component type identification for in-circuit tests. Variable test signal output from 0.5 to 1.0Vrms allows to improve test precision in different situation e.g. for in-circuit measurement and loose leaded ceramic capacitors. Visible and audible tolerance mode allows to perform component sorting. Math null function allows to store a pre-measured offset and improve measurement precision.


  • 1 year from the purchase date. Advance replacement option is available.

Main Features:

  • Built-in high-precision LCR probe
  • Convenient one-hand operation
  • Ideal for Surface Mount Devices
  • Automated component identification
  • Automated test range selection
  • Manual C, R, L, Z and ESR modes
  • Test signal levels 0.5 and 1.0Vrms
  • Swiss-made precise test leads
  • Diode Polarity/Short Testing
  • Secondary D, Q, ESR parameters
  • Portable and ergonomic design
  • Built-in Li-Ion battery
  • Universal Micro USB charger
  • High visibility OLED display


Physical Specifications
Operating Temperature 0 °C to +55 °C
Battery Type 3.7V LiPO rechargeable 180mAH
Battery Life (continuous) 20 Hours typical, 2 hours charging cycle
Electromagnetic Compatibility (EMC) FCC 15 part B, SE
Size 14.0 x 2.5 x 3.0 cm (3.94 x 0.9 x 1.5 in)
Weight 29 grams (1Oz)
Warranty 1 year


Technical Specifications
AC test mode Test frequency 1 kHz, 10 kHz, 120Hz,100 Hz
Test frequency accuracy 50 PPM (0.005%)
Test signal level 0.5/1.0 +/- 5% Vrms Sine wave
Source impedance 62.5Ω/1kΩ/16kΩ +/- 1%


Measurement Ranges and Precision
Resistance Range 0.05 Ω to 9.9 MΩ
Precision up to 0.2% (see datasheet for details)
Capacitance Range 0.5 pF to 4999 μF
Precision up to 0.2% (see datasheet for details)
Inductance Range 0.5 μH to 999 mH
Precision up to 0.5% (see datasheet for details)
Quality factor Q Range 0.001 to 1000*
Dissipation factor D Range 0.001 to 1000*

* indication of the parameter not implemented in some versions

Click to view the Data Sheet

See all listings of the Smart Tweezers ST5S

Smart Tweezers ST5S Kit w/ additional test leads - ST52SAD-KH

Smart Tweezers ST5S Kit w/ additional test leads - ST52SAD-KH

Smart Tweezers ST5S Kit w/ additional test leads - ST52SAD-K…