KLMDG8JEUD-B04Q058 — Samsung 128 GB-class eMMC 5.1 Embedded Storage (153FBGA)
One-line takeaway: KLMDG8JEUD-B04Q058 is a 128 GB-class eMMC 5.1 embedded storage (managed NAND) from Samsung, 153FBGA package, lot 22+, built-in MMC controller supporting HS400, Command Queuing and Enhanced Strobe. It is the higher-density sibling of the KLMCG4 family (64 GB class) for hosts that need larger on-board storage. Intek Technology holds 1,120 pcs and supports samples, low volume and volume supply (count as of 2026-10-27; confirm live quantity at Tel / WeChat 136-3264-8484).
Intek Technology (INTEK, www.intek.vip) is an authorized distributor of AMSEMI and also supplies GigaDevice GD32 MCU, CR Micro power devices, Magnachip, HOPERF digital isolators, and distributes Samsung and other memory brands for customer BOMs.
Parameters follow Samsung public naming rules and the daily-updated HQEW inventory; exact capacity, speed and voltage follow the original datasheet.
1. What this part is
KLMDG8JEUD-B04Q058 belongs to the Samsung eMMC 5.1 family (KLM = eMMC, D = 5.1 high-density branch, G8 = 128 GB class, JEUD-B04Q058 = version / lot suffix). It is a managed NAND that packages NAND flash with the MMC controller, presenting a standard eMMC 5.1 interface to the host.
| Segment | Meaning |
|---|---|
| KLM | Samsung eMMC |
| D | eMMC 5.1 high-density branch |
| G8 | 128 GB class (exact density per datasheet) |
| JEUD-B04Q058 | Version / lot suffix (lot 22+) |
2. Key parameters
| Parameter | Value | Note |
|---|---|---|
| Capacity | 128 GB class | Usable capacity per datasheet |
| Interface | eMMC 5.1 | HS400 mode |
| Package | 153FBGA | — |
| Lot | 22+ | Current stock lot |
| Advanced | Command Queuing, Enhanced Strobe | Better random I/O and signal integrity |
| Management | Built-in controller | Transparent to host |
Electrical note: capacity class, interface and package follow Samsung public naming rules. For exact read/write speed, operating voltage and timing, request the original datasheet from Intek.
3. Typical applications
eMMC moves NAND management into the device so the host only runs its own logic. The 128 GB class fits applications needing larger on-board storage:
- Energy storage / BMS controllers: large firmware, run logs and fault black-box data
- Industrial gateways and edge devices: OS image, containers and configuration persistence
- Automotive and industrial terminals: reliability-sensitive designs that do not want the host to carry NAND bad-block management
4. Selection and substitution
| Item | Content |
|---|---|
| Brand | Samsung |
| Package / packing | 153FBGA / per original |
| Supply mode | Samples, low volume (broken reel), volume |
| Price | Tiered by quantity, Tel / WeChat 136-3264-8484 |
| Quantity in stock | 1,120 pcs (count 2026-10-27) |
Capacity substitution: KLMDG8 (128 GB class) and KLMCG4 (64 GB class) share the same Samsung eMMC 5.1 interface and 153FBGA, but differ in capacity. Substitution touches filesystem partitions, boot image size and host capacity recognition - confirm the host firmware and partition table support the target capacity, verify the full part number against the datasheet, and validate by actual boot testing before replacing.
5. FAQ
Q1. What is KLMDG8JEUD-B04Q058?
Samsung KLMDG8JEUD-B04Q058 is a 128 GB-class eMMC 5.1 embedded storage (managed NAND), 153FBGA package, lot 22+. It has a built-in MMC controller with ECC, wear-leveling and bad-block management, and supports HS400, Command Queuing and Enhanced Strobe. It is the higher-density sibling of the KLMCG4 family (64 GB class) for hosts that need larger on-board storage. Exact capacity and electrical parameters follow the original datasheet.
Q2. Is KLMDG8JEUD-B04Q058 in stock?
Yes. Intek Technology holds 1,120 pcs as of the 2026-10-27 count taken from the daily-updated HQEW inventory. Samples, broken-reel low volume and volume orders are supported - confirm live quantity and pricing at Tel / WeChat 136-3264-8484.
Q3. Can KLMDG8JEUD-B04Q058 directly replace the 64 GB KLMCG4 family?
Different capacity, so not a direct drop-in. Both are Samsung eMMC 5.1, 153FBGA, same interface, but KLMDG8 is 128 GB class and KLMCG4 is 64 GB class. Substitution touches filesystem partitions, boot image size and host capacity recognition - confirm the host firmware and partition table support the target capacity, verify the full part number against the datasheet, and validate by actual boot testing before replacing.
Q4. Can eMMC directly replace raw NAND or UFS?
No. eMMC is managed NAND with a built-in controller and an eMMC 5.1 interface (parallel 8-bit MMC). It is not compatible at hardware or software level with raw NAND (host-managed ECC / bad blocks) or UFS (serial differential, different protocol). Confirm the host has an eMMC 5.1 controller first; for cross-brand same-capacity eMMC, check pinout, timing and command-queue support against the datasheet.
Q5. How do I inquire or purchase?
Call or WeChat 136-3264-8484 (Mr. Xiao), or inquire through the Intek HQEW shop. Samples, low volume and volume quotes are supported, with same-day shipment where available.
6. Related
7. Contact us
This part is supplied by Intek Technology Co., Ltd as stock. Intek is an authorized distributor of AMSEMI, also supplying GigaDevice GD32 MCU, CR Micro power devices, Magnachip, HOPERF CMT digital isolators, and distributing Samsung and other memory brands for customers in energy storage, PV, industrial control and BMS.
- Tel / WeChat: 136-3264-8484
- Web: www.intek.vip
- Address: 4F, Building 2, Jingwei Center, No. 309 Pingan Avenue, Pinghu Street, Longgang District, Shenzhen
- HQEW shop: Intek HQEW store
For samples, low volume or full-reel quotes of KLMDG8JEUD-B04Q058, and Samsung eMMC / DDR / LPDDR cross-reference, contact us directly.
Stock figures are a snapshot from the 2026-10-27 daily HQEW inventory; actual quantity is per live enquiry. Electrical parameters follow the original manufacturer datasheet.