HGD4F04S42 is a pin-to-pin compatible replacement for Winbond W66CP6RBQAGJ, matching the original on density (4 Gbit) and low-power LPDDR4X mobile memory in a 200-ball package. Confirm the x16/x32 bus width and ball map before switching. Samples start at 10 pcs.
Every field below is compared line by line against the original manufacturer's public datasheet before a part is offered as a replacement.
| Parameter | Winbond W66CP6RBQAGJ (original) | HGD4F04S42 (HGCHIPS) | Match |
|---|---|---|---|
| Density (Gbit) | 4 | 4 | ✔ Same |
| Organization | x16 (confirm) | x16 | ✔ Same |
| Speed Grade | LPDDR4X-3733 (1.866 GHz) | LPDDR4-4266 | ✔ Same (speed class) |
| Voltage (V) | 1.8/1.1/0.6 | 1.8/1.1/1.1 | ◐ Confirm (VDDQ) |
| Package | 200-ball TFBGA | VFBGA-200 | ◐ Confirm (ball map) |
| Temperature Grade | Commercial (0~+95C) | Commercial (0~+95C) | ✔ Same |
Compatibility is based on electrical and mechanical comparison against the original manufacturer's public datasheet. Always qualify on your platform before volume use; test reports and application support are provided. W66CP6RBQAGJ is a 4 Gbit LPDDR4X part with a Winbond-specific ball map; final pin-out is confirmed against the datasheet before release. A 4 Gbit x32 alternative is also available on request.
When the original is on allocation or past end-of-life, HG parts ship from physical stock — stock lines in 48 hours from Shenzhen.
Every lot ships with traceable validation records for your incoming QA.
Datasheet-level comparison and application support from our Taiwan and Shenzhen engineering team.
Yes. HGD4F04S42 is engineered as a pin-to-pin compatible replacement for Winbond W66CP6RBQAGJ. Ball map, electrical specification and timing are compared against the original manufacturer's public datasheet, and the part is functionally validated before shipment.
No PCB or firmware change is intended. The part is designed for the same footprint and ball map as Winbond W66CP6RBQAGJ. Always qualify the replacement on your own board before volume use — we provide samples from 10 pcs and lot-level test reports for that purpose.
Samples start at 10 pcs. Sample cost is credited against your first production order.
Stock lines ship within 48 hours from Shenzhen. Non-stock and long-lifecycle programs are quoted with a confirmed lead time — send your target quantity and we reply within 24 business hours.
Our Taiwan engineering team compares density, organization, speed grade, voltage, package and temperature grade against the original datasheet, then the part is functionally validated on mainstream platforms, with traceable per-lot records.
Send your target quantity and platform — we confirm compatibility, share test reports and quote within 24 business hours.
Request a Quote Full HGD4F04S42 specification →See the full part number index, the LPDDR4 / LPDDR4X product line, or search by original part number.