# W631GG6KB In Stock — Domestic Replacement HGD31G16C16 PIN2PIN No-Redesign | HGCHIPS

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# W631GG6KB in stock — HGD31G16C16 domestic drop-in replacement (PIN2PIN, no redesign)

**HGD31G16C16** is a pin-to-pin compatible replacement for **Winbond W631GG6KB**. It matches the original on density (1 Gbit), organization (64Mx16), speed grade (DDR3-1600), voltage (1.5 V) and package (96-ball VFBGA), so no PCB or firmware change is required. Samples start at 10 pcs with lot-level test reports.

Specification comparison

## W631GG6KB vs HGD31G16C16 — what has to match

| Parameter | Winbond W631GG6KB (original) | HGD31G16C16 (HGCHIPS) | Match |
| --- | --- | --- | --- |
| Density (Gbit) | 1 | 1 | ✔ Same |
| Organization | 64Mx16 | 64Mx16 | ✔ Same |
| Speed Grade | DDR3-1600 | DDR3-1600 | ✔ Same |
| Voltage (V) | 1.5 | 1.5 | ✔ Same |
| Package | 96-ball VFBGA | VFBGA-96 | ✔ Same |
| Temperature Grade | Commercial (0~+95C) | Commercial (0~+95C) | ✔ Same |

W631GG6KB is a 1.5 V standard DDR3 part; the -12 grade (DDR3-1600) maps directly to HGD31G16C16. For DDR3-1866/2133 speed grades, confirm the matching HG speed bin with our team.

FAQ

## W631GG6KB alternative — common questions

### Is HGD31G16C16 a direct replacement for Winbond W631GG6KB?

Yes. HGD31G16C16 is engineered as a pin-to-pin compatible replacement for Winbond W631GG6KB. Ball map, electrical specification and timing are compared against the original manufacturer's public datasheet, and the part is functionally validated before shipment.

### Do I need to change my PCB or firmware for HGD31G16C16?

No PCB or firmware change is intended. The part is designed for the same footprint and ball map as Winbond W631GG6KB. 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.

### What is the minimum order quantity?

Samples start at 10 pcs. Sample cost is credited against your first production order.

### What lead time should I expect?

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.

### How is compatibility verified?

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.

## Request HGD31G16C16 samples or a quote

Send your target quantity and platform — we confirm compatibility, share test reports and quote within 24 business hours.

Request a Quote · [Full HGD31G16C16 specification](https://hgchips.net/parts/hgd31g16c16.html)

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Last updated: 2026-10-12