TH58TEG8H2HBAS9 256Gbit eMMC for Industrial Embedded Storage

11 September 2026 69

TH58TEG8H2HBAS9 256Gbit eMMC for Industrial Embedded Storage

TH58TEG8H2HBAS9 is a KIOXIA/Toshiba managed NAND device for embedded systems that require non-volatile storage in a compact BGA package. Its eMMC 5.1 interface, industrial operating-temperature listing and 32GB usable capacity make it relevant to established industrial and embedded designs. For procurement teams, the priority is exact-part verification and lifecycle control.

Quick Answer

Use TH58TEG8H2HBAS9 only when the approved BOM calls for a 256Gbit (32GB), 32G × 8, eMMC 5.1 device in a 132-BGA package. Confirm current lifecycle, firmware compatibility and actual supply before ordering.

Concept illustration—not an actual product photograph or package drawing.

Product Overview and Positioning

TH58TEG8H2HBAS9 combines NAND storage and an eMMC controller behind a standardized managed interface. Unlike raw NAND, eMMC handles functions such as internal media management inside the package, reducing the host’s direct NAND-management burden. It is a board-level component, not a removable memory card or complete SSD.

The published organization is 32G × 8, equal to 256Gbit or 32GB. Some catalog descriptions incorrectly say 256GB; buyers should not copy that value into an ERP or customer quotation. The complete manufacturer part number must remain the purchasing reference.

Four Advantages for OEM and EMS Buyers

1  Managed eMMC 5.1 Interface

The eMMC 5.1 interface simplifies host integration compared with raw NAND. The benefit applies only when the processor, boot ROM, operating system and board design support the device and its required initialization. Existing firmware qualification remains essential.

2  Industrial Temperature Listing

The listed −40°C to +85°C range supports industrial embedded design reviews. This device-level rating does not certify the finished product for automotive, medical, safety-critical or outdoor use; system qualification and thermal validation are still required.

3  32GB Capacity in One BGA Device

The 256Gbit density equals 32GB, providing integrated program and data storage without a removable medium. Confirm reserved areas, formatting and controller overhead when calculating the capacity visible to the operating system.

4  Exact Part Control for Legacy Programs

A complete ordering code helps procurement prevent silent substitutions. For established products, require engineering approval before changing the NAND technology, controller revision, package, temperature grade or firmware behavior, even when another part has the same nominal capacity.

Technical Parameters and Buying Interpretation

Parameter

Published value

Procurement meaning

Manufacturer

KIOXIA / Toshiba

Check marking and traceability against the exact MPN.

Memory type

Non-volatile NAND flash

Retains data without system power.

Density

256Gbit / 32G × 8

Equals 32GB, not 256GB.

Interface

eMMC 5.1

Requires compatible host and qualified firmware.

Package

132-BGA, surface mount

Confirm footprint and assembly profile.

Supply voltage

2.7V to 3.6V

Verify the board power rail and sequencing.

Operating temperature

−40°C to +85°C

Validate system thermal conditions.

Catalog status

DigiKey: discontinued; 0 stock viewed

Obtain current lifecycle and supply confirmation.

Published catalog attributes are identification aids, not a substitute for a controlled manufacturer datasheet. Distributor stock and status can change; verify them at the quotation date.

Suitable Application Scenarios

Industrial Controllers and HMIs

The device can store boot code, operating systems, configurations and logs in compatible controllers or human-machine interfaces. Confirm workload, write frequency, data-retention requirements and recovery procedures before release.

Networking and Communication Equipment

Compatible gateways, routers and communication terminals may use eMMC for firmware and local data. Procurement should match the exact approved device because controller behavior can influence boot and field-update reliability.

Digital Signage and Embedded Terminals

Compact signage players, kiosks and embedded terminals can benefit from soldered non-volatile storage. Storage capacity alone is not enough; validate media-update patterns, power-loss behavior and environmental conditions.

Pain Points and Practical Responses

Pain point

Practical response

256Gbit is mistaken for 256GB

Record the capacity as 32GB and retain 256Gbit as the bit-density value.

A same-capacity part is offered as equivalent

Require engineering review of interface, package, firmware and temperature grade.

Catalog status is inconsistent

Request a dated quotation, lifecycle evidence and lot-level traceability.

Legacy builds face counterfeit risk

Use source qualification, document review and risk-based incoming inspection.

Documented Sourcing Signal

Public distributor data shows why buyers should verify current supply rather than rely on an old listing. DigiKey identifies TH58TEG8H2HBAS9 as a 256Gbit eMMC 5.1 device in 132-BGA, but its page viewed in September 2026 showed the item as discontinued with zero stock and no available lead time. Avnet also displayed zero stock, while its “256GB” description conflicts with the 256Gbit organization reported elsewhere.

This is a real catalog observation, not a customer success story and not proof that the manufacturer has issued an end-of-life notice. The procurement conclusion is narrower: reconcile capacity data, obtain dated supply confirmation and request applicable manufacturer lifecycle documentation before committing to a production schedule.

Frequently Asked Questions

Is TH58TEG8H2HBAS9 256GB?

No. The published 256Gbit density equals 32GB. A 256GB catalog description is inconsistent with 32G × 8 organization.

Is this raw NAND?

It is listed as managed eMMC 5.1 NAND. The host uses an eMMC interface rather than directly managing raw NAND operations.

Can another 32GB eMMC replace it?

Not automatically. Confirm package, pinout, voltage, timing, eMMC features, firmware behavior and environmental qualification.

Is it suitable for automotive products?

Do not infer automotive qualification from the industrial temperature listing. Request the required automotive qualification documents for that application.

Is the part currently available?

Availability is supplier- and date-specific. Public pages viewed showed zero stock, so request a dated quotation and lifecycle confirmation.

What should an RFQ include?

Provide the full MPN, quantity, delivery schedule, destination, packaging, date-code and traceability requirements, and state whether alternatives may be proposed.

Request a Project Specific Quote

TH58TEG8H2HBAS9 is appropriate to evaluate when its 32GB capacity, eMMC 5.1 interface, 132-BGA package and operating range match the approved design. Send our sales team your target quantity, required date and acceptance criteria. Ask for confirmation of the exact part number, available documentation, packaging condition and current delivery terms before ordering.