Functional Alternative Alternative Legacy / EOL path ISSI

ISSI IS43TR16256BL-125KBLI Alternative - Loongtion Functional Alternative

Functional Alternative Alternative for ISSI IS43TR16256BL-125KBLI — parameter alignment for BOM review, why evaluate Loongtion, FAQs, and datasheet / sample paths. Qualify on your board before swap.

Vendor PN ISSI IS43TR16256BL-125KBLI

Also listed as IS43TR16256BL, IS43TR16256, ISSI DDR3 4Gb

Loongtion PN Loongtion YZ38F16SBB-9MFD-M(O) / YZ38F16SBB-9MFD-M

Functional Alternative · Alternative

Summary

ISSI 4Gb DDR3 ×16 FBGA96 (IS43TR16256BL) — Functional Alternative to Loongtion YZ38F16SBB. Package/density align; Loongtion offers wider temperature (−55~+105°C GJB path) and dual 1.35/1.5 V. Confirm 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 ISSI
Density 4Gb (256M×16) 4Gb (256M×16)
Package FBGA96 FBGA96
Voltage 1.35V / 1.5V 1.5V (typical; verify SKU)
Temperature −40~+85°C / −55~+105°C GJB −40°C to +95°C (verify grade)

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 ISSI, then use it for dual-sourcing, allocation relief, or future EOL coverage.

  • Keep long-lifecycle boards alive When ISSI IS43TR16256BL-125KBLI 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 −40~+85°C / −55~+105°C GJB for this line. Match the ordering PN to your environmental requirement (commercial, wide-temp, or Extreme-temp / GJB where offered).
  • Direct engineering, samples, and small-batch pilots Request datasheet and samples 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 IS43TR16256BL-125KBLI?

It means Loongtion YZ38F16SBB-9MFD-M(O) / YZ38F16SBB-9MFD-M is a documented functional or form-factor path for BOM exploration versus ISSI IS43TR16256BL-125KBLI — 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 ISSI?

Yes — that is a common international OEM pattern. Qualify the Loongtion PN on your board, keep ISSI 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 −40~+85°C / −55~+105°C GJB on the target platform.

Can I get a sample for evaluation?

Yes. Request a sample with incumbent PN, application, temperature grade, and qty. Engineering will confirm the closest Loongtion PN and shipping plan.

Related Loongtion products

Open a product page for specs, documents, and inquiry.

DDR3 DRAM Chip · Extreme · CN DRAM — FBGA96 · ×16 · CN supply View → DDR3 DRAM Chip · Wide-temp · CN DRAM — Reliable DDR3 with industrial manufacturing View →

Related technical resources

Guides and notes that help qualify replacement, layout, and temperature choices.

DDR3 Legacy Replacement: A Field Engineer's Guide Guide Read → Industrial DDR3 Memory Selection Guide Whitepaper Read → Loongtion DDR3 DRAM chip: Integration and Selection Guide Guide Read → DDR3 vs DDR4 in Industrial Systems: Supply Chain Risks and Long-Term Design Reliability Article Read →

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 Details
Micron MT41K256M16HA-125IT YZ38F16SBB-9MFD-M(O) / YZ38F16SBB-9MFD-M Details
ChangXin (CXMT) CXD2A8G8MA YZ38G16SDB-9INN-M(0) (8Gb ×16 FBGA96) Details
Samsung K4B4G1646Q-HYK0 YZ38F16SBB-9MFD-M(O) / YZ38F16SBB-9MFD-M Details
SK hynix H5TQ4G63CFR-RDC YZ38F16SBB-9MFD-M(O) / YZ38F16SBB-9MFD-M Details
Samsung K4B8G1646D-MCNB YZ38G16SDB-9INN-M(0) (8Gb ×16 FBGA96) Details

Source: Knowledge-base DDR3 comparison — ISSI IS43TR16256BL → YZ38F16SBB Functional Alternative (not Pin-to-Pin certified).

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).

Request sample Contact engineering View product Search related PNs