Smart Tweezers


Smart Tweezers

Smart Tweezers™ is a handheld LCR Meter with 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.

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 in Switzerland are able to reliably contact SMD components (as small as 0201 format) or take measurements from the devices already mounted on a board.
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  • 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 0.25-1.0 Vrms
  • 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

  • Smart Tweezers™ comes equipped with a built-in high-capacity Li-Ion rechargeable battery. Battery replacements are not required.

    110-220V power supply and Micro USB charging cord

    Universal 110-220V power supply and Micro USB charging cord are included.

    Ergonomic Design and Convenient Controls

    Default settings can be modified by navigating a set of menus with the Navigation Control.

    Meter's display can be easily flipped from the menu for left-handed use.

    Ergonomic Design and Convenient Controls

Physical Specifications


Operating Temperature: 

0 °C to +55 °C

Battery Type:

3.7V LiPO rechargeable 150mAH

Battery Life (continuous ):

80 Hours typical, 2 hours charging cycle

Electromagnetic Compatibility (EMC):

FCC 15 part B, SE


14.0 x 2.5 x 3.0 cm (3.94 x 0.9 x 1.5 in)


53 grams (0.11lb)


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:

0.25/0.5/1.0 +/- 5% Vrms Sine wave

Source impedance:

62.5Ω/1kΩ/16kΩ +/- 1%

Basic Specifications




0.05 Ω to 9.9 MΩ


up to 0.2% (see datasheet for deatils)




0.5 pF to 4999 μF


up to 0.2% (see datasheet for deatils)




0.5 μH to 999 mH


up to 0.5% (see datasheet for deatils)

Quality factor Q:



0.001 to 1000*

Dissipation factor D:



0.001 to 1000*

ST5 Smart Tweezers LCR Meter PDF ST5 Smart Tweezers LCR Meter