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ST5-S Professional LCR Meter/ESR Meter with Spare Test Leads and Pocket Case

4.6 4.6 out of 5 stars 62 ratings

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Purchase options and add-ons

Brand Smart Tweezers
Power Source Battery Powered
Style Professional
Color Black
Measurement Type LCR Meter

About this item

  • Precision LCR Meter, 0.1% Accuracy, ideal for SMD, calibrated, certificate included
  • Automated component identification. Automatic and manual C, R, L, Z, ESR modes
  • ClearValue OLED Display, Swiss-made 24K Gold-plated Test Leads, Li-Ion battery
  • Amazon Special: Portable and clam shell cases, spare premium test leads included
  • 2 Years Warranty and Lifetime support. Supplied directly from Advance Devices, Inc.

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Product details

  • Is Discontinued By Manufacturer ‏ : ‎ No
  • Package Dimensions ‏ : ‎ 9.7 x 4.3 x 2.4 inches; 11.22 ounces
  • Item model number ‏ : ‎ ST5S
  • Date First Available ‏ : ‎ November 16, 2011
  • Manufacturer ‏ : ‎ Advance Devices, Inc.
  • ASIN ‏ : ‎ B0068QJ5Z6
  • Customer Reviews:
    4.6 4.6 out of 5 stars 62 ratings

Product Description

This Smart Tweezers ST5S kit includes:
- ST52SAD Smart Tweezers unit
- Calibration Certificate
- Swiss-made straight test leads
- Custom carrying case
- Micro USB cable for charging from a USB port

What's in the box

  • Portable and clamshell cases, spare Swiss-made premium test leads, calibration certificate
  • Looking for specific info?

    Customer reviews

    4.6 out of 5 stars
    4.6 out of 5
    62 global ratings

    Customers say

    Customers like the quality, ease of use, accuracy, value, and display of the electric circuit testing device. They mention that it's a very good tool, impressed with its capabilities, and the perfect test instrument. They appreciate the clear and bright OLED display, and mention that the readings are accurate on everything. They also say that the product is worth every penny and that it has a great diagnostic tool. Customers are also happy with the measurement modes.

    AI-generated from the text of customer reviews

    32 customers mention32 positive0 negative

    Customers are satisfied with the quality of the electric circuit testing device. They mention that it is a very good tool for the really small stuff, amazing, and impressed with its capabilities. They also say that it's useful and easy to use, and the perfect test instrument for their system test dept. Customers also mention that the product is neat and a great diagnostic tool.

    "...with are easily landing on 0402 footprint components and are of good quality overall - the "shorting" resistance is less then 40 mOhm)..." Read more

    "This device is actually amazing. Use it everyday. A shop that does not have this is really missing out...." Read more

    "...a lower price will work for larger components, this seems like a very good tool for the really small stuff...." Read more

    "...loved these tweezers for the first 6 months, really makse testing surface mount components fast and easy...." Read more

    16 customers mention16 positive0 negative

    Customers find the electric circuit testing device easy to use. They mention it's responsive, intuitive, and simple. They also appreciate the smart tweezers, which are amazingly easy to operate and extremely helpful for smaller SMD components. Customers also say the convenience factor pays for itself, as it saves a lot of time in test and repair of electronic devices.

    "...The interface is convenient and reasonably intuitive for such small instrument - the brief look at supplied "menu tree" card and you got it..." Read more

    "...first 6 months, really makse testing surface mount components fast and easy. But when I went to use the tweezers recently, they would not turn on...." Read more

    "...The navigation system for the Pro1 Plus is much easier to use and a lot more responsive...." Read more

    "...smart auto-device detection capability is very handy, thus it is very easy to use and compact, the Li-Ion battery last for several hours before..." Read more

    15 customers mention15 positive0 negative

    Customers are satisfied with the accuracy of the electric circuit testing device. They mention that the readings are accurate on everything they've measured so far, and the measurements are incredibly accurate for its size and price range. The ESR measurement works fine, and it is very helpful in measuring small RLC values. It is also the only practical way to measure unmounted SMT components.

    "...Fast and accurate (compared with readouts of benchtop Fluke multimeter) readings, crisp graphic OLED display, plenty of measurement modes and..." Read more

    "...A shop that does not have this is really missing out.It is very accurate compared to other LCR devices I have attempted to use...." Read more

    "...I'm surprised by the accuracy, although I wish it would go to 100 kHz to better isolate the component under test from the rest of the network...." Read more

    "A high quality product but expensive .The ESR measurement works fine and it is very important when you are testing electrolityc capacitors in high..." Read more

    7 customers mention7 positive0 negative

    Customers appreciate the value of the electric circuit testing device. They say it's a high quality product and worth every penny.

    "A high quality product but expensive .The ESR measurement works fine and it is very important when you are testing electrolityc capacitors in high..." Read more

    "...before requiring re-charge... overall, it is most definitely worth the price." Read more

    "...Good buy." Read more

    "...You'd be hard pressed to find anything comparable. It's worth every penny I have spent on it so far." Read more

    4 customers mention4 positive0 negative

    Customers are satisfied with the display of the electric circuit testing device. They mention that it has a sharp graphic OLED display, which is very clear and bright. Some say that the Pro1 Plus has s much clearer and bigger display that seems to have more contrast. Overall, customers are happy with the brightness and contrast of the display.

    "...readings, crisp graphic OLED display, plenty of measurement modes and presets..." Read more

    "...The Pro1 Plus has a much clearer and bigger display that seemed to have more contrast between the black of the screen and the font...." Read more

    "...The OLED display is very sharp & clear, (you may have to wear your glass to see some of the details), but it is quite readable, in virtually..." Read more

    "Great device for testing SMDs.Accurate, many useful functions, contrast and bright display...." Read more

    4 customers mention4 positive0 negative

    Customers are satisfied with the measurement modes of the electric circuit testing device. They mention that it has plenty of measurement modes and presets, many features, and is versatile. Customers are also pleased with the menus making sense, and the readings are accurate.

    "...readings, crisp graphic OLED display, plenty of measurement modes and presets..." Read more

    "I have really enjoyed using this device. So simple and so many features. Even bluetooth to a computer for display and logging...." Read more

    "...The display updates very quickly, the menus make sense, and the readings are accurate on everything we've measured so far." Read more

    "...last two years, finally bought them and am exceptionally pleased with the versatility of them." Read more

    4 customers mention4 positive0 negative

    Customers are satisfied with the size of the electric circuit testing device. They mention that it works well with any size, down to the smallest parts in new smart phones, and is extremely helpful for smaller SMD components.

    "...It works well with any size, down to smallest parts in new smart phones." Read more

    "The smart tweezers are amazingly easy to use and extremely helpful for smaller SMD components...." Read more

    "I liked the size, the ease of use and auto off" Read more

    "Works great for SMD. A bit awkward for unmounted through hole parts, but it works." Read more

    Sent them back and got something better
    1 Star
    Sent them back and got something better
    I bought these becase I read alot of good reviews about the ST5S. I was a little dissapointed with how it preforemed so I looked again and came across this other brand that sells a model Pro1 Plus I was a little hesitant about buying these as I had already order the ST5S model from "Smart Tweezers" brand and I wasn't sure if it would be worth it for the additional $29 price increase over ST5S. I however am extremely happy with them and would HIGHLY recommend the Pro1 Plus Over the ST5S, That is the short version.Here is the long one.Since I ordered both the "LCR Research" Pro1 Plus and the "Smart Tweezers" ST5S roughly around the same I thought it would be good to compare the two in case someone else out there is going through the same decision. They are about the same price, look almost the same, and are both considered and LCR meter. However they are not the same.First I will start with the aesthetics and functionality of them. First thing you notice when you open up the two side by side (see pictures) you see initially the ST5S looks like it has more stuff. It comes with a USB stick, charging cable, AC to DC adapter (which is a blackberry brand?? Guess they had a few leftovers from those things still) Calibration Certificate, small hard plastic case and finally the tweezers themselves.The Pro1 Plus took a more simple but effective approach, It comes with a charging cable, hard plastic padded case and the tweezers. Doesn't look like a lot but in reality who doesn't have a USB port to plug it in if it needs charging or who needs another cheap/giveaway type USB flash drive? As for the old blackberry charger that came with the ST5S, I just though it was funny but I don't think you want your customers laughing at your product. The one plus it did have was the packaging was nicer but in the long run that really doesn't matter.The cases that come with each one are two very different designs. The ST5S has a thick hard black plastic "tube" that you slide your tweezers in to. The problem I have with that is how do you know if the tips of your tweezers are not hitting the bottom of the "tube" Say for example you accidelnty drop it and the impact forces the pins down to the bottom of the "tube" and smash the points. But you will never know unless you have X-Ray Vision because the thing is black plastic.The Pro1 Plus has a hard black plastic case with a foam cut out that forms around the tweezers and more importantly the tips. Keeping them protected in case it falls to the floor by accident. I would defiantly pick the Pro1 Plus's case over the ST5S if I saw them both in the store.Now the Tweezers them selves. First think you notice when you turn on both screens is the size difference. The Pro1 Plus is bigger and on such a small device it makes a huge difference. Not only is the actual screen it self bigger but the font the Pro1 Plus uses is bigger. Next is how each one of them implements their navigation system to get to the menus. If you notice on the ST5S you have a single "joystick" to use to navigate. you can go up down left right or push the button in. This seems like it would be a good system but the "joystick" is so small that for me with fat fingers some times will hit the wrong direction or push it in instead of pushing it to the left, etc. The second problem I had with it was there seemed to be a bit of a delay between pressing the button and the screen responding. Or I would think I pressed it and hear a "click" but nothing would happen at all. So I never knew if I should wait because of the delay or press it again because it didn't register or I pressed it the wrong way. Also the screen is so small and the font is even smaller. I don't have that bad of eyes and I was having to be like 6 in away from it to read the screen menu/settings not measurements. So anytime I wanted to change something and make sure I got it to the right setting I had to bring it right up to my face.The Pro1 Plus has a much clearer and bigger display that seemed to have more contrast between the black of the screen and the font. I can actually have the tweezers down by what I am measuring and change settings with no problems. The navigation system for the Pro1 Plus is much easier to use and a lot more responsive. You can go up down or hit enter and that makes switching what options you want to turn on or off so much less complicated and more intuitive. Also when you hold down the button for half a second to get to the main menus screen. It takes half a second and no more, and works first time every time.On to using the meter for measurements.The Pro1 Plus really has the ST5S beat hands down in this regard from more features to better accuracy and from my experience better in circuit testing. I will mention some notable features but if you want to know all the features you can go to their website and check them out. What I found useful was the very low test voltage for in circuit testing. The Pro1 Plus goes down to ..2V and the ST5S's lowest voltage is .45V. The other think I liked was the Pro1 Plus went to 100KHz bandwidth for the test frequency where as the ST5S only goes up to 10KHz. Also I though it was nice of LCR Research to put in a self calibration test so it stays accurate for the conditions your in. Another notable feature of the Pro1 Plus is they have very small precise tips on them. I know that Smart Tweezers makes a set of "precision tips" but they cost an extra $60 and the ST5S comes with standard tips. I didn't see that much of a difference between the two when it came to just measuring components out of circuit as pictured and checked with my fluke 87v. Where I did notice a big difference was in circuit. If you look at my pics (sorry I tried to get them in order but it wouldn't let me or I don't know how) you can see that I am measuring the same resistor with each pair and the ST5S keeps reading resistors as caps. Granted there are caps inline with those resistors but its still not the component I am measuring. I should note that when I was testing them I had both of them in Auto mode. This happened multiple times. There were times with the ST5S that it identified the right componet but the ratio was really bad. Another feature that the Pro1 Plus has that the ST5S does not is a LED checker. I tested it out as you can see in my pics and it lights up an LED and shows its Vf and If. The ST5S when put in diode mode just tested as "Short" Again if you want to know more about the many functions that the Pro1 Plus has please see the website as I do not feel like just relisting them here.Another experience that motivated my buying decision was I had emailed the sales team at LCR Research and asked them a few things about the Pro1 Plus. A gentleman named Chris got back to me very quickly and answered all my questions and then some. He also assured me that if I had any issues with the Pro1 Plus I could contact him with questions and he would respond in the same timely manner. If I can expect that type of support regularly then I will a very happy customer. Anyways overall I think that the Pro1 Plus is better in every way down to the case design. This company is new so I don't think they have a lot of reputation but if they keep the way they are going they will soon be domination the market for these instruments. Its kind of sad to say I can't find a single thing that I like more on the ST5S than the Pro1 Plus but that's the way it is. I sent back my ST5S this morning for a refund. I think if your not willing to spend the extra $30 you really are doing a disservice to you self. That extra $30 will give you much more cabibality and you won't be straining to see the screen all the time. Hope this helps someone make a decision they were going back and forth over for a while.
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