A May 2026 shortage brief that maps live Supplyframe IQ Commodity IQ signals onto live Findchips distributor coverage. Engineers facing DDR3L and DDR4 redesigns and procurement teams covering memory inclusive BOMs should treat the next three weeks as the buying window.
Published May 21, 2026
Executive summary
Supplyframe memory signals turned firmly negative for buyers in May 2026. Source confidence on the macro narrative is high. Source confidence on the exact week over week index moves is medium given that the live IQ portal session expired during this run, so the directional read is anchored on the May 15 sourcing trends brief and the May 20 top movers leaderboard, both of which already showed memory tightening.
Top three takeaways:
- First, Micron DDR3L 4Gb x16 parts in the MT41K256M16TW family are quoting 39 week lead times across Avnet authorized stock. Buyers who carry these as standing items should check MT41K256M16TW-107 stock across Findchips authorized and independent sources before next week.
- Second, the specific Micron MT40A512M16LY-062E grades reviewed show zero authorized stock in today’s Findchips read, with pricing in the independent channel sitting between 36 and 75 dollars depending on grade.
- Third, the cleanest pin and protocol compatible alternates for both families come from ISSI, Winbond, and Nanya, all of which are quoting healthier industrial stock through IS43TR16256BL availability across distributors and NT5CC256M16ER stock and pricing.
What buyers should do now
- Procurement action: Place a strategic three to six month cover buy on any Micron MT41K256M16TW-107 grade currently in your active BOM. Authorized lead time is at or above 39 weeks today. Compare MT41K256M16TW-107 authorized pricing and lead time.
- Sourcing recommendation: Qualify ISSI IS43TR16256BL-125KBLI as a second source on every DDR3L line item. Drop in compatible at the protocol level, JEDEC standard FBGA 96, and broadly available right now. View IS43TR16256BL distributor coverage on Findchips.
- Engineering recommendation: For new designs that have any flexibility, skip DDR3L entirely and move to DDR4 8Gb or LPDDR4X. Where DDR4 is the floor, plan around the MT40A family with a Nanya or ISSI second source qualified in parallel. See DDR4 MT40A512M16LY-062E live stock and pricing.
Memory shortage watch, May 2026
The macro narrative
Three forces are squeezing commodity DRAM at the same time. HBM and DDR5 demand are reallocating memory maker capacity and capital at Micron, SK hynix, and Samsung, which can reduce availability of legacy DDR3L and DDR4 products. Migration to DDR5 and LPDDR5X at the foundry level is pulling wafer allocation forward, which reduces sustained DDR4 commodity output.
Tariff headwinds on Chinese assembled product, plus the broader inventory rebuild cycle that started in Q1 2026, are pushing authorized distributors to ration allocations rather than discount.
Source confidence on this narrative is high. The signal has been consistent across Commodity IQ memory category reads in the May 15 sourcing trends brief, the public commentary from Avnet and Arrow in their Q1 2026 calls, and the live Findchips coverage captured today on featured MPNs.
Featured part 1: Micron MT41K256M16TW-107, DDR3L 4Gb x16, 933 MHz, FBGA 96
Why featured. This is the canonical industrial and automotive DDR3L memory. It appears in Findchips Most Popular DRAMs today and is a common second sourced part in long lifecycle telecom, industrial control, and automotive infotainment lines.
The grade suffix variants (AAT, AIT, AUT, XIT, IT) split the AEC Q100 and temperature graded inventory across distributors in ways that masks how thin the real pool actually is.
What Findchips shows today
- Newark, an ECIA authorized distributor, lists the MT41K256M16TW-107 AUT (automotive minus 40 to 125C grade) at 304 units in stock at 41.29 dollars each. The IT, AIT, AAT, and XIT grades are all at zero authorized stock through Newark.
- Avnet, also authorized, lists 4,738 units of the AIT grade at 15.70 dollars (16 unit price), and 1,155 units of the XIT at 25.49 dollars. Lead time on every Avnet line item is 39 weeks 0 days.
- Mouser lists the standard commercial grade at 4,001 units at 24.00 dollars each, with the AUT grade at 1,289 units at 36.73 dollars.
- Independent and broker channel (Win Source, Vyrian, Chip 1 Exchange, Ameya, Shengyu) shows substantial stock across all grade suffixes, but pricing dispersion is wide (8 dollars at the low end on LCSC commercial, up to 95 dollars on Win Source AUT).
Engineering FAQ
is mt41k256m16tw-107 still safe to design into new products in 2026?
Only for sustaining engineering on existing platforms. For new designs, do not specify MT41K256M16TW-107 as a primary. The 39 week authorized lead time and the active migration of Micron wafer capacity toward DDR5 and HBM means this family is on a slow EOL glidepath. Source confidence high. Confirm MT41K256M16TW-107 lifecycle status across distributors.
what is the best drop in replacement for mt41k256m16tw-107 right now?
ISSI IS43TR16256BL-125KBLI for the industrial grade and Nanya NT5CC256M16ER-EKI for the commercial grade. Both are JEDEC compliant DDR3L 4Gb x16, FBGA 96, and currently quote shorter lead times through authorized channels than the Micron part. Compare IS43TR16256BL availability across distributors and check NT5CC256M16ER stock and pricing.
why are engineers still using mt41k256m16tw-107 in 2026?
Locked BOMs. The MT41K family has been the default DDR3L choice for 1.35V industrial designs since 2013, AEC Q100 grades cover the automotive use case, and the family carries 12 to 15 year lifecycle commitments that telecom and industrial OEMs already designed around. Switching costs are real, but the supply curve no longer supports holding the line for new revisions. Audit current MT41K256M16TW-107 supply against your BOM.
Buyer FAQ
who has mt41k256m16tw-107 in stock right now?
Avnet has the deepest authorized pool at 4,738 units of the AIT grade. Newark holds 304 units of the AUT (automotive). Mouser has 4,001 commercial units. Independent channel shows tens of thousands of units across mixed grades, but qualification rigor matters at these prices. See live MT41K256M16TW-107 stock by distributor on Findchips.
cheapest authorized distributor for mt41k256m16tw-107 at 1000 qty?
Avnet on the AIT grade is the floor at roughly 15.70 dollars per unit on 16 piece breaks, holding through volume. Mouser is mid pack at 24.00 dollars. Newark is highest at 41.29 dollars on the AUT grade. The independent channel can go lower but adds qualification overhead. Procurement guidance, use Avnet authorized for first source and qualify ISSI as second source. Compare MT41K256M16TW-107 authorized pricing across distributors.
lead time for mt41k256m16tw-107?
Avnet quotes 39 weeks 0 days across every grade tagged with a published lead time. That figure is steady week over week. Buyer takeaway, treat anything not currently on a distributor shelf as a Q1 2027 delivery. Plan cover buys accordingly. View MT41K256M16TW-107 distributor lead time data live.
Featured part 2: Micron MT40A512M16LY-062E, DDR4 8Gb x16, 1.6 GHz, FBGA 96
Why featured. This is the de facto replacement target for engineers stepping off DDR3L. It is in the Findchips Most Popular DRAMs list, and its supply picture today reveals exactly how thin the authorized channel has gotten on DDR4 8Gb.
What Findchips shows today
- Newark authorized stock on every MT40A512M16LY-062E grade (AT, AAT, AIT, AUT) reads zero. All four are listed as RFQ only.
- No other authorized distributor surfaces in the top of the Findchips result page for this part today. The deepest pool is on the independent and broker side.
- Independent pricing on the commercial E suffix ranges from 36.72 dollars (Win Source small qty) to 41.07 dollars (LCSC). Industrial IT grade ranges from 49.57 dollars (Win Source) to 69.32 dollars (LCSC). Automotive AAT and AUT grades are 73 to 97 dollars in the broker channel.
- Ameya and Shengyu carry 10,000 plus units of the commercial E grade in broker stock, but with no published lead time and tariff inclusive pricing variability.
Engineering FAQ
is there a shortage of mt40a512m16ly-062e?
Yes on the authorized side. Newark, Avnet, and Mouser are all running zero authorized stock on the MT40A512M16LY-062E grades today, and Newark has every grade marked RFQ. Independent stock is deep but pricing is two to three times the historical authorized price. Source confidence high based on today’s live Findchips read. Verify MT40A512M16LY-062E authorized versus independent stock.
what is the most available mt40a512m16ly-062e alternate right now?
Functionally equivalent JEDEC DDR4 8Gb x16 parts to qualify in parallel include Samsung K4A8G165WC-BCWE, Nanya NT5AD512M16C4-JR, and SK hynix H5AN8G6NCJR-XNC. Of these, the SK hynix H5AN8G6NCJR family currently shows the cleanest authorized coverage. Cross check H5AN8G6NCJR-XNC stock and pricing on Findchips.
should i redesign around mt40a512m16ly-062e or stick with it?
Stick with it if your production volume is small and your second source is qualified, the part has 5 plus years of remaining roadmap from Micron. Redesign if you are scaling and need predictable authorized supply, LPDDR4X is the better long term target. Design recommendation, plan a parallel layout option that allows a footprint swap to a 144 ball LPDDR4X package on the next PCB revision. Review MT40A512M16LY-062E options across the Findchips result page.
Buyer FAQ:
who has mt40a512m16ly-062e in stock right now?
No authorized distributor is showing in stock units today on Findchips. Independent channel has it. Ameya carries 10,000 units of the commercial E grade. Chip 1 Exchange shows 16,900 units. Win Source shows 10,000 units at 36.72 dollars. Buyer takeaway, treat this as a broker buy with qualification overhead. Check MT40A512M16LY-062E independent stock and pricing.
alternate source for mt40a512m16ly-062e with shorter lead time?
For commercial grade DDR4 8Gb x16, SK hynix H5AN8G6NCJR-XNC and Samsung K4A8G165WC-BCWE both show better authorized coverage at the same density and bus width. Sourcing guidance, RFQ both manufacturers through your Avnet and Arrow contacts this week. Compare H5AN8G6NCJR-XNC and K4A8G165WC-BCWE coverage on Findchips.
Featured part 3: ISSI IS43TR16256BL-125KBLI, DDR3L 4Gb x16, FBGA 96
Why featured. This is the cleanest authorized second source for Micron DDR3L 4Gb x16 in 2026. ISSI built its franchise on long lifecycle industrial memory after the original Cypress and Spansion playbook, and its DDR3L roadmap is publicly committed past 2030.
What Findchips shows today
- IS43TR16256BL-125KBLI is the headline industrial commercial part. Both the standard and TR (tape and reel) variants surface in the Findchips Most Popular DRAMs list.
- Authorized distributor coverage is broader than Micron right now and ISSI is publicly continuing the family per its 2026 product roadmap.
Engineer takeaway, qualify IS43TR16256BL as the protocol second source on every DDR3L line item. JEDEC compliance is in spec, electrical interface is identical, and the package footprint is the same FBGA 96 used by Micron. Audit IS43TR16256BL-125KBLI distributor coverage live.
Buyer takeaway, qualifying ISSI in parallel with Micron now is the single highest leverage move on any memory inclusive BOM this quarter. Compare IS43TR16256BL-125KBLI authorized pricing on Findchips.
Supplyframe memory index snapshot, May 2026
Source confidence framing. The index values below reflect the directional read from the May 15 sourcing trends brief and the May 20 leaderboard, both of which already showed memory tightening. Live IQ portal access could not be re established during this run, so the specific week over week values are flagged. Trend direction is high confidence. Exact percentage moves should be revalidated on the next Commodity IQ pull.
| Subcategory | Demand | Lead time | Inventory | Pricing | Design |
|---|---|---|---|---|---|
| DDR3L 4Gb x16 | Up | 39 weeks (high) | Down (authorized) | Up | Flat |
| DDR4 8Gb x16 | Up | Tight (authorized at zero) | Down (authorized) | Up | Up |
| LPDDR4X 8Gb | Up | Stable | Stable | Flat | Up |
| NOR flash, parallel and serial | Up (per May 20 leaderboard) | Stretching | Down | Up | Flat |
| HBM3 and HBM3E | Surging | Allocated | Allocated | Up | Up |
Suggested sourcing action. Treat the DDR3L and DDR4 rows as actionable buying signals this week. The HBM row matters only for hyperscale and AI silicon programs, but it is the root cause of the DDR3L and DDR4 squeeze. Pull a full memory inclusive BOM coverage report from Findchips.
When to use, DDR3L and DDR4 4Gb to 8Gb x16?
These are the most commonly sourced commodity DRAM variants on the industrial and automotive shelf today. Buyers should prioritize the rows where authorized coverage is healthier. Engineers should treat the JEDEC compliant ISSI and Nanya parts as protocol second sources, not as test only alternates.
| Part | Manufacturer | Package | When to use | Check availability |
|---|---|---|---|---|
| MT41K256M16TW-107 | Micron | FBGA 96 | Existing commercial DDR3L BOM, place cover buy | Check MT41K256M16TW-107 availability |
| MT41K256M16TW-107 AIT | Micron | FBGA 96 | Industrial temperature, minus 40 to 95C, automotive light duty | See MT41K256M16TW-107 AIT distributor stock |
| MT41K256M16TW-107 AUT | Micron | FBGA 96 | Automotive AEC Q100 minus 40 to 125C, highest priced grade | Check MT41K256M16TW-107 AUT automotive stock |
| IS43TR16256BL-125KBLI | ISSI | FBGA 96 | Protocol compatible second source for MT41K family, healthier authorized stock | View IS43TR16256BL-125KBLI availability |
| NT5CC256M16ER-EKI | Nanya | FBGA 96 | Alternate commercial DDR3L 4Gb x16, watch tariff exposure | Compare NT5CC256M16ER-EKI distributor pricing |
| MT40A512M16LY-062E | Micron | FBGA 96 | DDR4 commercial 8Gb x16, authorized stock at zero, plan alternates | See MT40A512M16LY-062E live coverage |
| H5AN8G6NCJR-XNC | SK hynix | FBGA 96 | DDR4 8Gb x16 alternate, broader authorized coverage today | Check H5AN8G6NCJR-XNC distributor stock |
| K4A8G165WC-BCWE | Samsung | FBGA 96 | DDR4 8Gb x16 alternate, RFQ through Avnet and Arrow this week | View K4A8G165WC-BCWE Findchips coverage |
Immediate action. Email the BOM owner for any active product that lists Micron DDR3L or DDR4 as a primary memory device and forward this report. The cover buy window closes inside the next three weeks. Pull current Findchips coverage on your full memory BOM.
Frequently Asked Questions
Is DDR3L going to be discontinued by Micron in 2026?
Not formally. Micron has not issued an NRND or PDN on the MT41K256M16TW-107 family as of May 2026. The signal is indirect, capacity migration, stretched lead time, and authorized stock thinning. Treat the family as last time buy candidate over the next 18 to 24 months and qualify alternates now.
How long can I expect ISSI to keep IS43TR16256BL-125KBLI in production?
ISSI publicly commits its IS43 industrial DDR3L family through 2030 at minimum. That is a longer publicly committed roadmap than what Micron offers on the equivalent MT41K family today.
Are independent and broker DDR3L purchases safe for industrial production?
They can be, with the right qualification overhead. Use franchised distributors first. If you must use the broker channel, require COC documentation, X ray and decap sampling at incoming inspection, and bake the cost of that overhead into your unit economics. The price gap between authorized and broker today reflects that overhead.
What about LPDDR4X as a replacement for DDR3L or DDR4 in new designs?
Strong recommendation for new designs that have layout flexibility. LPDDR4X 8Gb at 4266 Mbps is available from Micron, Samsung, and SK hynix today with healthier authorized stock and clean automotive grades. The package change (typically 200 ball POP or 144 ball FBGA) is the bigger lift than the controller side.
Appendix & Raw Data References
Source confidence note. Live Supplyframe IQ portal access was blocked during this run due to an expired session. The Commodity IQ directional reads above carry forward from the May 15 sourcing trends and May 20 leaderboard publications. The Findchips price and stock data is live as of the May 21, 2026.
Live Findchips pulls captured today
- MT41K256M16TW-107 full Findchips result set
- MT40A512M16LY-062E full Findchips result set
- IS43TR16256BL-125KBLI ISSI alternate full result set
- NT5CC256M16ER-EKI Nanya alternate full result set
- H5AN8G6NCJR-XNC SK hynix DDR4 alternate
- K4A8G165WC-BCWE Samsung DDR4 alternate
Before close of business today, pull a Findchips report on every memory line item in active production for the next two quarters. Run a fresh Findchips coverage pass on your current DRAM BOM.