# W634GU6NB In Stock — Domestic Replacement HGD34L16C16 PIN2PIN No-Redesign | HGCHIPS

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# W634GU6NB in stock — HGD34L16C16 domestic drop-in replacement (PIN2PIN, no redesign)

**HGD34L16C16** is a pin-to-pin compatible replacement for **Winbond W634GU6NB**. It matches the original on density (4 Gbit), organization (256Mx16), voltage (1.35 V DDR3L) 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

## W634GU6NB vs HGD34L16C16 — what has to match

| Parameter | Winbond W634GU6NB (original) | HGD34L16C16 (HGCHIPS) | Match |
| --- | --- | --- | --- |
| Density (Gbit) | 4 | 4 | ✔ Same |
| Organization | 256Mx16 | 256Mx16 | ✔ Same |
| Speed Grade | DDR3-1600 | DDR3-1600 | ✔ Same |
| Voltage (V) | 1.35 | 1.35 | ✔ Same |
| Package | 96-ball VFBGA | VFBGA-96 | ✔ Same |
| Temperature Grade | Commercial (0~+95C) | Commercial (0~+95C) | ✔ Same |

W634GU6NB is a 4 Gbit DDR3L x16 part offered up to -40~+95°C industrial grade; confirm the temperature grade when ordering industrial bins.

FAQ

## W634GU6NB alternative — common questions

### Is HGD34L16C16 a direct replacement for Winbond W634GU6NB?

Yes. HGD34L16C16 is engineered as a pin-to-pin compatible replacement for Winbond W634GU6NB. 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 HGD34L16C16?

No PCB or firmware change is intended. The part is designed for the same footprint and ball map as Winbond W634GU6NB. 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 HGD34L16C16 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 HGD34L16C16 specification](https://hgchips.net/parts/hgd34l16c16.html)

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Source: https://hgchips.net/alternatives/w634gu6nb.html  
Last updated: 2026-10-12