Tokyo Electronics Trading
Maximizing the Reliability and Durability of Semiconductor Products

In 1977, Tokyo Electronics Trading (TET) planted its roots as a trading company venture, importing and selling high-performance pulse generators from EH Research Labs in the U.S.

This achievement was just the beginning of TET’s journey in the semiconductor industry. The year 1986 marked another pivotal moment where TET underwent a transformative rebirth as a manufacturer and distributor of specialized testers to assist semiconductor companies and electronic component manufacturers with electrostatic discharge (ESD) countermeasures.

This equates to “testing the immunity of integrated circuits (IC), as we put ESD protection circuits through their paces, ensuring the gadgets we rely on every day remain safe from the hidden menace of static electricity,” says Hideki Sadohara, president.

The ESD testers, the hallmark of TET’s business, are indispensable tools for semiconductor manufacturers’ R&D groups and circuit designers. These testers evaluate and determine the resistance of clients’ ICs to ESD events, assuring the dependability of even the most sophisticated chips for production use.

A simple go/no-go assessment allows clients to identify potential design and manufacturing issues, making sure their electronic products are robust and comply with stringent industrial standards like ANSI/ESDA/JEDEC JS-001 and ANSI/ESDA/JEDEC JS-002. With a mounting head on a robot, the tester can evaluate a wide range of products, from LED parts to multi-pin devices, offering flexibility and reliability in testing.

Complementing this is TET's ESD tester, which collects ESD data in a PC. This tester compares the IC before and after applying an ESD pulse and records the ESD level. The recorded results can be used to determine whether the IC's ESD protection circuit is working properly.

Recognizing the challenges posed by miniaturized structures and low voltage tolerances in modern ICs, TET has established a new lineup apart from automated ESD testers.

These cutting-edge testers are capable of assessing ICs at the wafer level and with narrow pin-to-pin pitches, providing unmatched versatility for any IC type. This breakthrough solidifies TET’s leadership in the field of ESD testers, empowering clients to produce superior and dependable electronic products.

TET’s Model Ecdm series offers a cost-effective solution for comprehensive ESD testing, making it an ideal choice to research ESD protection circuits in the laboratory and design ESD protection circuits before large scale production. Its manual operation on a benchtop provides ease of use and accessibility. The flexibility to change external connection probes/adapters allows it to simulate all major ESD types, including the human body model (HBM), machine model (MM) and charged device model (CDM). This ensures client’s ICs and electronic components are thoroughly tested for a wide range of ESD scenarios, enhancing their reliability and compliance with industry standards.

This multifunctionality not only saves costs by eliminating the need for separate instruments but streamlines clients’ testing processes, giving them a comprehensive understanding of their components' performance under various stress conditions.

TET’s pivotal step toward latch-up testers marks a testament to its market predictability infusing new energy into its endeavors.

The latch-up testers assist manufacturers of complementary metal oxide semiconductor (CMOS) devices in identifying and addressing latch-up phenomena when excessive current flows between the power supply and ground due to external noise during normal operation, potentially causing damage and system failures.

This comprehensive portfolio has established TET as a trusted partner for semiconductor manufacturers involved in the design of IC protection circuits. Renesas Electronics, Sony Group, Fujitsu Group, Toshiba, Asahi Kasei Electronics and Murata Manufacturing are just a few of the industry leaders who rely on TET’s expertise. Furthermore, TET’s advanced testing solutions have also become the go-to partner for reliability test houses like ITES, OKI Engineering and Restar, solidifying its position as a pivotal player in maximizing the reliability of semiconductor products.

TET’s mission is clear—to eliminate ESD concerns and enable flawless electronic device performance. With its cutting-edge solutions, semiconductor companies ensure their products meet the highest standards of quality and reliability, paving the way for a future of impeccable electronic devices.