A flexible and efficient ESD tester capable of testing devices and wafers

PurePulse ESD Testing

Electro-Tech Systems, Inc. (ETS) and Grund Technical Solutions (GTS) are proud to partner in establishing a premier ESD test laboratory for device and wafer level testing. 
For over 40 years, ETS has been a world leader in designing, manufacturing, and supplying electrostatic test instruments, along with ISO 17025 accredited ESD testing services. Since 2008, GTS has established itself as a trusted partner for leading industry players, offering cutting-edge ESD testers and pioneering 2-Pin testing methodologies. The combination of leading industry players provides a level of testing capability and resources unmatched by any other ESD test facility.
The ETS Testing Center utilizes a fully automated, flexible, and efficient GTS PurePulse 2-pin ESD Tester designed from the ground up to enable customized testing to meet your device and wafer testing needs. PurePulse 2-pin style setup reduces testing parasitics, captures waveform data, and can be automated to test thousands of pins.Testing capabilities include fully automated Human Body Model (HBM) and Transmission Line Pulsing (TLP).

HBM (Human Body Model)

Electro-Tech Systems, Inc. (ETS) is one of the few labs with 2-pin HBM test capabilities. Others have manual 2-pin testing which is slow and therefore expensive as many lab hours are needed.  We have the only fully automated tester in the US so we can be competitively priced.  The advantage of 2-pin can be edited from this Q&A, but it needs edits as it’s a sales pitch for buying equipment:
  • Two-pin or two-channel testers don’t suffer the parasitics of having wires (PCB traces) hanging on every pin which act like little antennas talking to each other. 
  • They don’t require custom sockets or test fixture boards as they use two adjustable probes and hold the DUT dead-bug style.
  • They have identical stress to all pin combinations as they use only one pulse generator (rather than 8 or 24) and always the same pulse delivery path.
  • More real world stressing as ESD handling events normally occur between two individual pins and not one pin to a group of pins like on relay-based testers.  (The “one-to-a-group” was adapted years ago to speed the testing.  Actually, “every pin to every other pin” is the most complete way to test, but is not practical for packages with more than 24 or 36 pins in most cases).
  • They can be instrumented with an oscilloscope to record the DUT current and voltage during each pulse.  This provides evidence that proper applied stress was used and can detect and document some protection structure failures.
  • They can be a low-cost manual tester used to evaluate small devices or specific pin pairs.
  • Automated two-pin tester can test large packages.  There is no limit on DUT pin count as in relay testers.
  • They are slower than relay testers, but often more cost effective.
  • They can be combined with TLP, MM, HMM for a more capable engineering workstation. 
  • You can test exactly to JS-001 with a two-pin tester following Table 2A, the preferred method.  When using a two-pin tester to JS-001, supply pin groups are broken into subsets of individual pins as it describes, and each IO pin is tested against every pin of the supply group.  This fully complies with JS-001 and therefore meets the requirements of being repeatable and reproducible.
  • Yes.  Each has its own advantages.
    • Relay-based testers are well known and fast testing.
    • Two-pin testers can more accurately test the performance of sensitive pin pairs.
  • Some users test first on a relay-based tester if the a failure is found then secondly on a two-pin tester.

TLP (Transmission Line Pulser)

Electro-Tech Systems, Inc. (ETS) have experienced people to setup and review tests.  We can provide analysis of test results in addition to complete test reports.  We can list the capabilities of the testing with a focus on the reports we can provide.
Electro-Tech Systems, Inc.