Samsung K4B8G1646D-MCNB Alternative - Loongtion Functional Alternative
Functional Alternative Alternative for Samsung K4B8G1646D-MCNB — parameter alignment for BOM review, why evaluate Loongtion, FAQs, and datasheet and quote paths. Qualify on your board before swap.
K4B8G1646D-MCNB
Also listed as
K4B8G1646D, K4B8G1646D-BYK0, K4B8G1646, Samsung DDR3 8Gb
YZ38G16SDB-9INN-M(0) (8Gb ×16 FBGA96)
Functional Alternative · Alternative
Summary
Samsung 8Gb DDR3/DDR3L ×16 in 96-ball FBGA — JEDEC-standard DRAM density/org used on long-life industrial boards. Loongtion 8Gb FBGA96 is a protocol/density Functional shortlist when Samsung DDR3 is EOL. Confirm monolithic vs TwinDie rank map, voltage (1.35/1.5 V), speed bin, and ball map before swap.
Parameter alignment
Key handbook fields side by side — confirm package, grade, and firmware against the datasheet for your build.
| Parameter | Loongtion | Samsung |
|---|---|---|
| Density | 8Gb (512M×16) | 8Gb (512M×16) |
| Package | FBGA96 | 96-ball FBGA |
| Voltage | 1.35V / 1.5V (verify SKU) | 1.35V DDR3L / 1.5V DDR3 |
| Temperature | Industrial grades (verify SKU) | Commercial/IT grades (verify) |
Why evaluate Loongtion for this PN
Cross-reference is not only for discontinued parts — many OEMs qualify a Loongtion path as a second source next to Samsung, then use it for dual-sourcing, allocation relief, or future EOL coverage.
- Keep long-lifecycle boards alive When Samsung K4B8G1646D-MCNB is hard to source or marked EOL, a documented Loongtion path helps MRO and long-life OEM programs avoid a full redesign — after board qualification.
- Functional Alternative path for BOM review This page documents the Loongtion PN, key parameter alignment, and compatibility type. Treat it as engineering guidance — confirm package, speed/firmware, and temperature on your host before production.
- Industrial temperature grades where listed Loongtion lists Industrial grades (verify SKU) for this line. Match the ordering PN to your environmental requirement (commercial, wide-temp, or Extreme-temp / GJB where offered).
- Direct engineering and small-batch pilots Request the datasheet with your incumbent PN, board, and temperature grade. Typical engineering reply is within one business day on China business days — useful for pilots before you lock an AVL dual-source.
Typical applications
Common equipment contexts where engineers search for this part family or a compatible alternative.
- Industrial PLC / DCS controllers
- CNC and motion controllers
- Industrial PCs and HMIs
- Long-lifecycle embedded boards
- Medical and test equipment (where grade allows)
FAQs for this cross-reference
What does “Functional Alternative” mean for K4B8G1646D-MCNB?
It means Loongtion YZ38G16SDB-9INN-M(0) (8Gb ×16 FBGA96) is a documented functional or form-factor path for BOM exploration versus Samsung K4B8G1646D-MCNB — not a blanket semiconductor interchangeability warranty. Confirm interface, package, capacity/density, firmware, and temperature on your host.
Can I use Loongtion as a second source while still buying Samsung?
Yes — that is a common international OEM pattern. Qualify the Loongtion PN on your board, keep Samsung as primary if required, and use Loongtion for allocation relief, cost/lead-time balance, or future EOL coverage.
What must I verify before substituting?
Match the critical interface and mechanical constraints (package / form factor, protocol, capacity, voltage, speed, endurance class). Then validate firmware behavior, power, and Industrial grades (verify SKU) on the target platform.
Can I evaluate the part before ordering?
Send the incumbent PN, application, temperature grade, and quantity. Engineering will confirm the closest Loongtion PN, evaluation terms, and lead time.
Related Loongtion products
Open a product page for specs, documents, and inquiry.
Related technical resources
Guides and notes that help qualify replacement, layout, and temperature choices.
Related cross-references
Other published mappings in the same product family.
| Vendor | Vendor PN | Loongtion PN |
|---|---|---|
| Micron |
MT41K128M16JT-125IT:K
|
YZ38E16SBB-9MFB-M(O) / YZ38E16SBB-9MFB-M
|
| Micron |
MT41K256M16HA-125IT
|
YZ38F16SBB-9MFD-M(O) / YZ38F16SBB-9MFD-M
|
| ChangXin (CXMT) |
CXD2A8G8MA
|
YZ38G16SDB-9INN-M(0) (8Gb ×16 FBGA96)
|
| Samsung |
K4B4G1646Q-HYK0
|
YZ38F16SBB-9MFD-M(O) / YZ38F16SBB-9MFD-M
|
| ISSI |
IS43TR16256BL-125KBLI
|
YZ38F16SBB-9MFD-M(O) / YZ38F16SBB-9MFD-M
|
| SK hynix |
H5TQ4G63CFR-RDC
|
YZ38F16SBB-9MFD-M(O) / YZ38F16SBB-9MFD-M
|
Source: Verified: Samsung K4B8G1646D public listings (8Gb ×16, FBGA96). JEDEC DDR3 Functional Alternative — not handbook Pin-to-Pin.
All manufacturer names, logos, and part numbers (such as Micron, Samsung, SK hynix, Phison, Kontron, Silicon Motion, and others) used on this website are for cross-reference and identification purposes only. These trademarks remain the property of their respective owners. Loongtion is not an authorized distributor or affiliate of these manufacturers.
Need help qualifying this functional alternative?
Share the incumbent PN, target board, and temperature grade — we respond within one business day on China business days (Mon–Fri, UTC+8; excl. public holidays).