Phison Phison uSSD series Possible Alternative - Loongtion
Possible alternative for Phison Phison uSSD series — exact incumbent ordering PN may vary by SKU. Treat as a shortlist only; host verification is required before production.
Phison uSSD series
Also listed as
Phison uSSD, 群联 uSSD, PSS series
YIDN*SKT/SKS series
Possible Alternative — Verify · Verify on Host
Summary
SATA BGA embedded SSD (uSSD) in FBGA156 — handbook states in-place replacement for Phison uSSD; verify capacity and temp grade per YIDN* PN.
Parameter alignment
Key handbook fields side by side — confirm package, grade, and firmware against the datasheet for your build.
| Parameter | Loongtion | Phison |
|---|---|---|
| Form factor | FBGA156 SATA BGA | Phison uSSD BGA |
| Interface | SATA III 6 Gb/s | SATA III |
| Capacity | 32 GB – 1 TB | Series-dependent |
| Temperature | −40~+85°C TLC / −55~+95°C pSLC GJB | Industrial (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 Phison, then use it for dual-sourcing, allocation relief, or future EOL coverage.
- Second source — not only an EOL story Use this mapping to dual-source alongside Phison. Qualify Loongtion once so allocation, long lead times, or a future EOL on Phison uSSD series does not stop your line.
- Possible Alternative — Verify 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 TLC / −55~+95°C pSLC GJB for this line. Match the ordering PN to your environmental requirement (commercial, wide-temp, or Extreme-temp / GJB where offered).
- Endurance / grade options for write-heavy duty Where the product line offers pSLC or higher-endurance grades, evaluate them for logging, boot, and always-on industrial workloads — not every incumbent SKU ships the same endurance class.
- 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.
- Embedded uSSD / SATA BGA hosts
- Industrial SBC boot / data storage
FAQs for this cross-reference
What does “Possible Alternative — Verify” mean for Phison uSSD series?
We do not publish a single verified ordering PN for every incumbent SKU in this family. Loongtion YIDN*SKT/SKS series is a possible alternative by protocol / form factor / density class — host verification is required before production. Send your exact BOM PN and we will shortlist the closest Loongtion part.
Is this a guaranteed drop-in?
No. Treat this page as a starting point for dual-sourcing or EOL exploration. Confirm package/ball map, firmware, capacity, temperature, and endurance on your board. Engineering can help once you share the exact incumbent ordering code.
What should I send so you can verify a match?
Incumbent full ordering PN (not only the family name), capacity, temperature grade, form factor or package, interface, and the target host / application. Photos of the part marking or a datasheet excerpt help.
Can I request a quote after verification?
Yes. After we confirm the closest Loongtion PN against your BOM line, send the board name, temperature grade, and quantity for a quote.
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 |
|---|---|---|
| Phison |
PSS5A324-X28
|
YIDN128SKT-S
|
Source: 2026 product handbook §9 SATA BGA — “replace Phison uSSD chip (Taiwan Phison uSSD)”.
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 possible 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).