Semiconductor Testers FAQ
What kind of semiconductor testers do you make?
We manufacture and sell resistivity and type (P/N) measuring tools. We have individual resistivity measuring tools, individual type measuring tools, and combination resistivity and type measuring tools.
What makes your testers better than other brands?
- We design our own testers so we know them inside out. This allows us to respond better and faster to questions, problems, or requests for special features.
- We build our own testers so we have control over quality and can stock hard to get components for faster delivery.
- We're proud to offer "Made in USA" testers.
- We have several proprietary pieces of technology. Our "Smart Probe" operating system makes taking resistivity readings very easy, very fast, and virtually error proof. The Check-It QC and Sort-It LT testers have this operating system. They are high speed testers for fast sorting.
- We support our own products. You do not get routed to some call center or wait 24 hours for an email answer from another country when you need answers.
Do your testers use contact or non-contact methods to measure material?
Our testers (resistivity and type) both use contact techniques to measure material.
What technique do your type testers use to measure P/N type?
We have both rectification and hot probe type testers.
What technique do your resistivity testers use?
Our resistivity testers use a 4 point probe and current source to measure resistivity.
Why don't you offer non-contact testers?
Our four point probe resistivity testers and three point type testers are very economical and cover a broader range of material resistivity and geometry than non-contact testers. Many of our testers are used for sorting scrap material in reclaim operations. Our Check-It QC and Sort-It LT are much faster than non-contact testers so you can achieve faster sorting thru-put.
Do you have portable or battery powered testers?
Yes, we have several models of resistivity and type testers that operate on battery power.
Do you have any high resolution testers?
Yes, the Check-It models of resistivity testers are high accuracy, high resolution testers.
Do you have a resistivity tester that will measure 5 milliohm cm material?
Yes, the Check-It Lo Res Model will measure down to 1 milliohm cm (.001 ohm cm).
Do any of your resistivity testers offer set points for sorting solar grade material?
Absolutely. The Go/No-Go tester was designed specifically for this. It is an adjustable high grade alternative to the Chinese pen testers. The Sort-It computerized tester has the ability to set binning options for sorting. We also offer special models of Check-It QC and Sort-It LT with "distinctive beep" options. This special software causes the tester to "chirp" a special sound if the material is above a set point (say 1 ohm cm).
I need to generate reports for my sorted scrap material. How can I do this?
The Sort-It has a 'Save Record" feature that logs ALL measurement data for a particular sample to a file. This file is formatted so it can be directly imported into Excel or a similar spreadsheet program. This way the operator can store measurement data for any or all pieces of material.
Many 4 point probe resistivity testers require adjusting the readings when measuring wafers or thin material. I need ohm cm readings when measuring wafers. How can I do this easily?
The Sort-It computerized Res/Type tester has wafer thickness compensation built in. It will automatically adjust the data so you have ohm cm readings for any thickness of material.
What kind of resistivity ranges do your resistivity testers cover?
We have testers that measure from .001 ohm cm and up. The upper limit is 200 ohm cm.
How stable are the current sources in your resistivity testers?
Our current sources are designed to minimize circuit heating and to maintain long term calibration.
What kind of support can I expect if I buy one of your testers?
We provide a CD with each tester that contains application notes and tips. We also provide phone and email support. Most problems are application related.
We have people sorting material that are not semiconductor experts. What do you have that will help them do their job better or more accurately?
The entire line of sorting testers we offer (Check-It QC, Sort-It LT, and Sort-It) have features to aid the operator and make measuring and sorting easier. Ask for our comparison chart so you can compare tester features.
Are your 4 point probe heads consumable?
Yes, they are consumable in the sense that they wear out or break. However, our probe heads have replaceable pins and pin sockets so they can be refurbished or repaired without replacing the entire probe head. This is a huge time and money saver.
Are the probe pins replaceable on your 3 point type probes?
Yes, they are and should be replaced often. Dull pins cause erratic and erroneous typing measurements. Type pins are available in low force (wafer) and high force (ingots, potscrap) versions.
*** Terms and conditions apply. Complete terms and conditions are listed in our formal quotation which is available upon request.
