DESIGN CENTERS: CONSUMER
Toshiba Expands Zener Diode Portfolio with Small Package Option for Overvoltage Protection
11/05/2026
Adopting SOD-882 (CST2) package provides additional design flexibility for space-constrained industrial and consumer equipment
Toshiba Expands Zener Diode Portfolio with Small Package Option for Overvoltage Protection
Toshiba Electronics Europe GmbH (“Toshiba”) has expanded its range of protection Zener diodes with the introduction of the CTZ series, a family of 20 devices supplied in a compact SOD-882 (CST2) package. The new series is suitable for a wide range of industrial and consumer equipment, including power supplies, office automation equipment and household appliances.
As industrial and consumer equipment continues to become more compact, designers face the challenge of providing effective overvoltage protection without increasing PCB area. Protection devices must also accommodate a wide range of operating voltages, from low-voltage logic rails through to the 12V and 24V power supplies commonly found in industrial equipment.
Unlike electrostatic discharge (ESD) protection diodes, which are intended primarily for short transient events, protection Zener diodes clamp longer-duration overvoltage conditions with characteristics close to DC.
The CTZ series extends Toshiba’s protection diode portfolio with 20 devices offering standard E24 Zener voltages from 5.6V to 36V. This enables designers to select an appropriate clamp voltage for a broad range of power supply and signal line protection applications while providing additional package options for space-constrained designs.
Each device is housed in a compact SOD-882 (CST2) package measuring 1.0mm × 0.6mm × 0.38mm (typ.). Compared with Toshiba’s SOD-323 (USC) package, the new package occupies approximately 81% less PCB mounting area, making it well suited to designs where board space is at a premium.
Toshiba continues to expand its range of protection devices, providing designers with a wider choice of solutions for safeguarding electronic equipment against overvoltage events.
More information about the new CTZ series is available on Toshiba’s website.
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