SMART TWEEZERS ST-5S

Testing surface-mounted components

Surface-mounted components are typically tiny and without wire leads, making it more difficult to test and identify SMDs than traditional components. Smart Tweezers™ provides users with an easy way to sort and evaluate loose components and perform measurements and troubleshooting on the board. Precise test leads reliably contact even the smallest SMD components and take measurements of already mounted components. The probe can also be used to test conventional components with wire leads that are too short to be inserted into the test terminals.

Automated measurements

Perform measurements faster with Smart Tweezers™ by using the automatic component identification function, which eliminates unnecessary trial and error time. Smart Tweezers™ automatically specifies L, C or R in parallel and series mode and selects an appropriate measurement range and test frequency for highly accurate measurements. The device displays the component type and a more detailed component analysis such as Z and ESR.

Lightweight and ergonomic

The integrated measuring head allows the operator to use one hand and concentrate on the tested component and the task at hand. Sorting, testing and troubleshooting become more efficient and cost-effective. The shielded 4-wire handles of the Smart Tweezers™ ensure low capacitance and resistance offsets during measurements.

Wide range of additional functions

• Smart Tweezers™ LCR meter allows you to test various component types, including secondary components such as damping factor (D) and quality factor (Q). This handheld device also includes other features that lead to more detailed component analysis.
• The built-in Equivalent Series Resistance (ESR) mode helps you understand the inherent resistance behavior typically found in capacitors at selected frequencies.
• In diode mode, Smart Tweezers™ tests the polarity of diodes and indicates whether they are shorted.
• Smart Tweezers™ has a continuity detector. A variable beep sounds for resistance measurements below set thresholds. This function also helps to locate shorted conductors (e.g. on a circuit board).
• In manual modes, Smart Tweezers™ measures a specific circuit parameter - L, C, R, Z or ESR. Manual modes also improve component identification for in-circuit testing.
• Variable test signal output from 0.41 to 0.91 Vrms enables improved test accuracy in various situations, such as in-circuit measurements and loose ceramic capacitors with wire leads.
• The visible and audible tolerance mode enables sorting of components.
• The mathematical zero function allows a pre-measured offset to be saved and improves measurement accuracy.

Technical specifications

• AC test mode test frequency: 1 kHz, 10 kHz, 120 Hz, 100 Hz
• Test frequency accuracy: 50 PPM (0.005%)
• Test signal level: 0.41/0.91 +/- 10%
• Vrms sine wave source impedance: 100Ω +/- 1%

Measuring ranges

• Resistance R: 0.05 Ω to 9.9 MΩ
• Capacitance C: 0.5 pF to 4999 μF
• Inductance L: 0.5 uH to 999 mH
• Quality factor Q: 0.001 to 1000
• dissipation factor D: 0.001 to 1000

Physical specifications

• Size: 15.0 x 1.8 x 1.5 cm (5.9 x 0.7 x 0.6 in)
• Battery type: 3.7V LiPO rechargeable 180mAH
• Battery life (continuous): 20 hours, 3 hour charge cycle