Toshiba Releases 40V Electronic Fuses (eFuse ICs) for Industrial and Consumer Applications

Released on: Tuesday, 09 Dec 2025 11:22AM

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Toshiba: TCKE6 series, 40V electronic fuses (eFuse ICs), for industrial and consumer applications.


KAWASAKI, Japan, Dec 9 (Bernama-BUSINESS WIRE) -- Toshiba Electronic Devices & Storage Corporation (”Toshiba”) has added the 40V "TCKE6 series" products to its range of electronic fuses (eFuse ICs) that support multiple functions required for power line circuit protection. The five new products joining the lineup are “TCKE601RA,” “TCKE601RL,” “TCKE602RM,” “TCKE603RA,” and “TCKE603RL.” Shipments start today.

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The new TCKE6 series products offer short-circuit protection similar to that of standard physical fuses while also incorporating current limiting and overvoltage protection functions—capabilities that physical fuses[1] cannot provide and that protect circuits from overcurrent and overvoltage. These features help to prevent excessive current or voltage from being applied to subsequent ICs when overcurrent or overvoltage occurs at a point in a circuit. The eFuse ICs also have a built-in thermal protection function that immediately shuts them down when abnormal heat is generated or an unexpected short-circuit occurs, thereby protecting the subsequent circuit. An additional advantage of eFuse ICs is simplified circuit design. By integrating multiple protection functions into a single device, they reduce the need for discrete components, enabling more compact and efficient designs with fewer parts and a smaller footprint.
 
The TCKE6 series products feature a 40V rating and support a wide input voltage range from 4.4V to 30V, making them suitable for power management applications, such as 5V, 9V, 12V, and 24V systems. A low on-resistance of 52mΩ (typ.) reduces power dissipation during operation and contributes to improved efficiency. The devices are housed in a small TSOP6F package (2.9mm×2.8mm (typ.)), which helps to reduce board size. These eFuse ICs are suitable for a wide range of applications, including industrial and consumer equipment.

The TCKE6 series includes products equipped with a FLAG function that detects and reports abnormal conditions, and products featuring an EN (enable) function that controls the operation of the eFuse IC. Each function type is available in two recovery operation types: auto-retry, in which the eFuse IC itself automatically recovers; and latched, which recovers via an external signal. Additionally, one of the products does not include FLAG or EN functions, but allows mode switching between auto-retry and latched types via external signals. This flexibility enables users to choose the most suitable product based on their system requirements and equipment size.

Toshiba will continue to develop eFuse IC products that meet diverse equipment requirements and expand its product lineup.

Note:
[1] Glass tube fuse, chip current fuse, etc.

ApplicationsFeatures
Main Specifications
(Unless otherwise specified, Ta＝-40 to 125°C, VIN=24V)
Part numberTCKE601RATCKE601RLTCKE602RMTCKE603RATCKE603RL
Recovery operation typeAuto-retryLatchedSelectableAuto-retryLatched
FunctionFLAG
function		FLAG
function		MODE
function		EN functionEN function
Absolute maximum ratingsInput voltage VIN (V)-0.3 to 40
Operating rangesInput voltage VIN (V)4.4 to 30
Junction temperature Tj_opr (°C)-40 to 125
Output current IOUT (A)0 to 2.5
Electrical characteristicsOn resistance
RON (mΩ)		IOUT=1A, RILIM=11kΩ, Ta=25°CTyp.52
Max90
Output limit current ILIM (A)RILIM=11kΩ, VIN-VOUT=2VMin1.84
Max2.98
Short circuit response time
tSHORT　(μs)		RLIM=11kΩ,　RLOAD=100Ω, CIN=COUT=1μF, Ta=25°CTyp.1
Current limit response time
tLIM　(μs)		RLIM=11kΩ, RLOAD=100Ω, CIN=COUT=1μF, Ta=25°CTyp.30
PackageNameTSOP6F
Size (mm)Typ.2.9×2.8×0.8
Stock Check & PurchaseBuy OnlineBuy OnlineBuy OnlineBuy OnlineBuy Online

Follow the links below for more on the new products.
TCKE601RA
TCKE601RL
TCKE602RM
TCKE603RA
TCKE603RL

Follow the link below for more on Toshiba eFuse ICs.
eFuse ICs

To check the selection guide of Toshiba's small signal and logic products, including the eFuse ICs, visit:
Selection Guide Small Signal and Logic

To check related contents on Toshiba eFuse ICs, visit:
eFuse IC for robust power supply protection
eFuse IC Glossary
Basic usage and functions of eFuse IC

To check availability of the new products at online distributors, visit:
TCKE601RA
Buy Online
TCKE601RL
Buy Online
TCKE602RM
Buy Online
TCKE603RA
Buy Online
TCKE603RL
Buy Online

* Company names, product names, and service names may be trademarks of their respective companies.
* Information in this document, including product prices and specifications, content of services and contact information, is current on the date of the announcement but is subject to change without prior notice.

About Toshiba Electronic Devices & Storage Corporation

Toshiba Electronic Devices & Storage Corporation, a leading supplier of advanced semiconductor and storage solutions, draws on over half a century of experience and innovation to offer customers and business partners outstanding discrete semiconductors, system LSIs and HDD products.

Its 17,000 employees around the world share a determination to maximize product value, and to promote close collaboration with customers in the co-creation of value and new markets. The company looks forward to building and to contributing to a better future for people everywhere.

Find out more at https://toshiba.semicon-storage.com/ap-en/top.html

View source version on businesswire.com: 
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Contact

Customer Inquiries:
Analog Device Sales & Marketing Dept.
Tel: +81-44-548-2219
Contact Us

Media Inquiries:
C. Nagasawa
Communications & Market Intelligence Dept.
Toshiba Electronic Devices & Storage Corporation
semicon-NR-mailbox@ml.toshiba.co.jp

Source: Toshiba Electronic Devices & Storage Corporation

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