SMT Smart Tweezers ST5-AS

Released October 2011

SMD Pre-Calibrated Components Identifier in a Set of Tweezers

To distribute this product in your country please
contact: or call head office in USA at (570) 842-2812.

This great tool can be used by almost anyone working with SMD's

TO BUY please see
Distributor in Your Region
New Model ST5-AS with USB Charger Older Model ST-R with Inductive Charger

Comparison of the Old (ST-AS) and New (ST-5) and Economy (ST5L) Models of Smart Tweezers

Available technical information:


The basic difference between the old and the new model of SMT Smart Tweezers is a Kelvin probe brought up to the tweezer tips. This significantly reduces noise and therefore improves accuracy of the ST5-AS Tweezers at least 6 times.

Model ST5-AS is charged via installed USB mini port. Li-Ion battery which is used in this newest model increases battery life considerably.

New features introduced in the ST5-AS model are:
Automatic Offset Subtraction, Component Sorting and Designated ESR Measurement.

We have eliminated features: DC and AC Voltage measurements.

The Model ST-AS with regular batteries was discontinued due to the shortage of few key components, which could not be supplied any longer. We had to re-engineer the SMT Smart Tweezers to cope with the long term supply of the key components.

Table below shows the differences between the new ST5-AS model and an old model ST-AS.

Comparison of the ST-AS and New Model ST5-AS of Smart Tweezers

  Old ST-AS Model New Model ST-5
Automatic LCR Measurement Yes Yes
Manual LCR Measurement Yes Yes
Diode Test Yes Yes
Continuity Test Yes Yes
DC Voltage Measurement Yes No
AC Voltage Measurement/ Trace Mode Yes No
Rechargeable Batteries / Charger Optional Standard
Designated ESR Measurement No Yes
Automatic Offset Subtraction No Yes
Component Sorting No Yes
Technical Specs    
Test Frequency 0.1, 0.12, 1, 10 kHz +/- 0.25% 0.1, 0.12, 1, 10 kHz +/- 0.25%
Test Signal Level 0.32 +/- 10% Vrms 0.32 +/- 10% Vrms
Source Impedance 620 Ohms +/- 5% 620 Ohms +/- 5%
Typical Accuracy    
Resistance 1% 0.20%
Capacitance 3% 0.50%
Inductance 3% 0.50%
Measurement Range    
Resistance  0.1 Ohm to 10 Mohms  0.1 Ohm to 10 Mohms
Capacitance 0.5 pF to 5 mF 0.5 pF to 1 mF
Inductance 0.5 uH to 1 H 0.5 uH to 1 H