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Siborg Systems Inc.

Smart Tweezers ST-5S: The Solution to Test and Evaluate Surface Mount Devices

Smart Tweezers

World renowned LCR-meter, now ST-5S

Updated look for Smart Tweezers ST-5S; all the same functionality and features with a new lighter weight and sleeker look.

Smart Tweezers MovieLCR-meter ST5 Video

Smart Tweezers FAQSmart Tweezers FAQ

Smart Tweezers Calibration CertificateSmart Tweezers Calibration Jig Certificate

Smart Tweezers ST-5S ManualSmart Tweezers ST-5S Manual

Instant Evaluations With Just One Touch

The title says it all, Smart Tweezers will show you component value right when you touch it, no adjustments needed to the component type, test frequency, test signal, etc. Not only will it show the main impedance component L, C or R but also the parasitics, such as R for L, C and C for R.

Built for Simplicity

From the very beginning Smart Tweezers was designed as a new type of fully-automatic LCR-meter specifically for the characterization of Surface Mount Devices. The key feature is a combination of gold-plated set of tweezers and a digital multimeter integrated into a light-weight nearly pen-sized unit. The benefit of such a design is two-fold: ultimate ease-of-use and very low and well known parasitics.

An Updated Look for a Classic

The new ST-5S offers users all the same features and functions that has become synonymous with the Smart Tweezers name, but in a smaller, lighter package. The updated look makes the ST-5S the bridge model between Smart Tweezers ST5 and the LCR-Reader; a 1 oz. weight and thinner body, with a bright OLED display for better contrast when evaluating.

Beloved by professionals, Smart Tweezers are a sophisticated tool with a basic accuracy of 0.2%, each arriving with an NIST Traceable Calibration Certificate. The high-precision gold plated tweezers allow to easily handle components as small as 0201 size. The low value parasitics are about 1pF capacitance and 30 mOhms resistance of the tweezer tips. The parasitic capacitance varies from 0.5 to 1.2 pF depending on the measure component size. This value can be automatically subtracted from the measured value by selecting automatic offset subtraction. This feature makes Smart Tweezers an unrivaled characterization tool for small capacitances and resistances. Without any additional calibration, in addition to the offset subtraction, it can measure capacitance for the order of 1 pF resistance of 10 mOhms.

Smart Tweezers ST-5S offers users component sorting, adjustable test signal levels of 0.2, 0.5 and 1 Volt, and automatic offset subtraction. The ability to use 1 Volt test signal is of crucial importance for testing ceramic capacitors (X5R type and similar). The older models used to read about 30% lower than actual capacitance value due to a non-linearity of this type of capacitors.

ST-5S Feature Summary

LCR-Reader: An LCR-meter for the Non-Professionals

The LCR-Reader is a budget model of tweezer-integrated LCR-meter, consumers now have a choice between Smart Tweezers and the new LCR-Reader. A complete comparison list of all features between Smart Tweezers and LCR-Reader is available here. The main differences between the new LCR-Reader and Smart Tweezers is the price, size, a slight change in accuracy and a few less features. A consumer’s choice, the LCR-Reader exceeds Smart Tweezers ST-1, ST-2 and ST-3 models. The new device offers a lower weight of 1 oz., half that of previous Smart Tweezers models, a price of less than $200, and a basic accuracy of 1%, though it does not come with a calibration certificate. The LCR-Reader uses only 0.5 Vrms test signal, unlike Smart Tweezers, thus is limited when testing ceramic capacitors. As it is well known that while testing ceramic capacitors with a test signal lower than 1 Vrms results in underestimated capacitance values, this is documented in the ST-2 User’s manual on p.16. Some features were left off the LCR-Reader that can be found on other Smart Tweezers models, such as; component sorting, parasitic offset subtraction, diode/continuity/voltage measurements, and variable test signals.

Feature Summary for LCR-Reader

Smart Tweezers LCR-Reader

Both devices have a four-wire connection to the gold-plated tweezer tips, significantly reduces the noise as well as the parasitic capacitance of the probes by more than a factor of two, and are powered by a Li-Ion battery, rechargeable via micro-USB.

A detailed comparison of features of the old and new models of Smart Tweezers is presented in this Comparison Table:

Smart Tweezers Comparison TableComparison with models ST3, ST5 and LCR-Reader

Purchasing Info

Siborg Systems Inc.

Siborg Systems Inc.
24 Combermere Crescent
Waterloo, ON N2L 5B1 Canada


30 days money back guarantee.
Limited time Offer: 2 Years Warranty

SALE PRICE - CA $399.99 (US $399.99)

How to Purchase

You may place your order in one of the following ways:

Purchase Online
Fax: 519.725.9522
Phone: 519.888.9906
Toll free: 1.877.823.7576

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History of Digital Multimeter   History of Smart Tweezers