2026年DDR4停产时间表：工业系统的最后一次采购与替换指南
DDR4 EOL 时间线追踪
主要供应商 DDR4 EOL 时间线
| 时间 | 事件 |
|---|---|
| 2024 Q3 | Samsung 通知 DDR4 EOL |
| 2024 Q4 | SK hynix 通知 DDR4 EOL |
| 2025 Q1 | Micron 通知 DDR4 EOL |
| 2025 Q4 | Samsung/SK hynix 最后购买日 |
| 2026 Q1 | Micron 最后购买日 |
| 2026 Q4 | 最后交付日 |
| 2027+ | 灰色市场（无保障） |
对工业客户的影响
- 2025~2026： 最后正常采购窗口，价格开始上涨
- 2026~2027： 供货紧张，价格翻 2~3 倍
- 2027+： 仅灰色市场，无质量保障
应对策略
- 2025 年： 评估用量，制定采购计划
- 2025~2026： 批量采购 2~3 年用量
- 建立双源： 主供应商 + 龙瑆
- 2026 后： 依赖龙瑆长期供货
龙瑆 DDR4 供应保障
- 10 年以上长期供货承诺
- 常备库存，4~8 周交期
- 价格稳定，不随消费级市场波动
- 批次溯源，质量保障
相关资源
继续浏览同一工业存储主题的相关选型指南和说明。
快速问答
常见工程问题提前解答。
When will DDR4 be discontinued?
Samsung stopped accepting DDR4 orders in June 2025 and delayed its full exit to 2026; SK hynix is cutting DDR4 output and Micron is holding its EOL plan. Consensus: DDR4 prices will not fall before end-2027.
What does last time buy (LTB) mean for DDR4?
LTB is the final window to order a part before the maker stops accepting orders. After the LTB deadline and final shipment, the part is only available from remaining inventory, brokers, or a qualified replacement.
Why are DDR4 prices rising if the technology is old?
HBM for AI consumes 2.5-3x the wafer capacity per GB and sells at 5-8x the price of DDR4, so the big three memory makers are structurally shifting capacity to HBM/DDR5. DDR4 supply is a permanent contraction, and old technology now costs more than new for the first time.
Is Samsung K4A8G165WC still available?
Depending on your ordering code and EOL status, you may still be inside the LTB window or must move to remaining stock or an equivalent. 龙瑆 YZ48G16V-F9HPI-M is a verified pin-to-pin replacement for K4A8G165WC-BCWE (8Gb, x16, DDR4-3200, -40C to +85C).
What is the lead time for DDR4 replacements?
Industry industrial-grade lead times are 20-26 weeks. 龙瑆 cross-reference replacements ship in 4-8 weeks, short enough to keep production lines running through the EOL window.
相关交叉对照
本指南中引用的引脚级和功能替代方案——用于 BOM 评审、双源采购或 EOL 覆盖。