Toshiba Launches Compact TCKE5 Series eFuse ICs
The new series provides configurable overcurrent protection for compact, low-voltage electronic devices.
Updated on Oct. 31, 2026 in Semiconductors
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Toshiba has officially launched and begun shipping its TCKE5 series of eFuse ICs, a new lineup designed for power management in compact electronics. The series consists of four models aimed at providing overcurrent and short-circuit protection for low-voltage power lines.
Why it matters
These components address the need for reliable circuit protection in space-constrained hardware by integrating essential safeguarding functions into a minimal footprint. By allowing designers to calibrate thresholds, the series simplifies power path management for low-voltage systems.
The TCKE5 series operates across a 1.7V to 5.5V input range and is housed in 2.0mm by 2.1mm by 0.7mm SOT-353F packages. These specifications provide a compact alternative for engineers managing current limits in dense circuit board layouts.
The players
Toshiba
A Japanese conglomerate and major semiconductor manufacturer known for producing discrete power devices, logic ICs, and storage solutions.
The details
Engineers configure overcurrent detection thresholds by connecting an external resistor to the device, which allows for precise circuit tuning. The series offers two distinct protection behaviors: UA variants feature an automatic retry function, while UL variants employ a latch-off mechanism that stays disabled until reset. Designers can also manage power-sequencing requirements by selecting specific output-voltage rise times via slew-rate options, helping to mitigate voltage spikes during startup.
Timeline
Shipments of the TCKE5 series began on October 31, 2026.
The Tech Race
This release follows the industry trend of integrating more complex safety features into increasingly miniaturized discrete components. By utilizing standard SOT-353F packaging, Toshiba aims to maintain compatibility with existing high-density PCB designs while competing against other small-form-factor power management ICs.
Engineers working on compact consumer hardware or small-scale power systems can integrate these eFuses immediately as units are now shipping. The use of external resistors for configuration allows for easier BOM (bill of materials) adjustments during the prototyping phase of development.
The takeaway
Toshiba is targeting the demand for integrated circuit protection in small-footprint devices with these four new shipping models. Engineers should monitor the manufacturer's product documentation for updated design guidelines on optimizing the slew-rate options for specific power-sequencing needs.
Further reading
Explore more advancements in power management components in our Semiconductors section.
Source note: This article includes information reported by Electronic Specifier.
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