# W634GU8NB In Stock — Domestic Replacement HGD34G08S16 PIN2PIN No-Redesign | HGCHIPS

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# W634GU8NB in stock — HGD34G08S16 domestic drop-in replacement (PIN2PIN, no redesign)

**HGD34G08S16** is a pin-to-pin compatible replacement for **Winbond W634GU8NB**, matching the original on density (4 Gbit) and x8 organization in a VFBGA-96 package. Note the original is DDR3L (1.35 V) while HGD34G08S16 is standard 1.5 V — confirm the voltage rail and x8 organization before switching. Samples start at 10 pcs.

Specification comparison

## W634GU8NB vs HGD34G08S16 — what has to match

| Parameter | Winbond W634GU8NB (original) | HGD34G08S16 (HGCHIPS) | Match |
| --- | --- | --- | --- |
| Density (Gbit) | 4 | 4 | ✔ Same |
| Organization | 256Mx8 | 512Mx8 | ◐ Confirm (x8 organization) |
| Speed Grade | DDR3-1600 | DDR3-1600 | ✔ Same |
| Voltage (V) | 1.35 (DDR3L) | 1.5 (DDR3) | ◐ Confirm (voltage rail) |
| Package | 96-ball VFBGA | VFBGA-96 | ✔ Same |
| Temperature Grade | Commercial (0~+95C) | Commercial (0~+95C) | ✔ Same |

W634GU8NB is a 4 Gbit DDR3L x8 part; HGD34G08S16 is a standard-voltage 4 Gbit x8 part. Confirm the 1.35 V / 1.5 V rail and exact x8 organization before design-in.

FAQ

## W634GU8NB alternative — common questions

### Is HGD34G08S16 a direct replacement for Winbond W634GU8NB?

Yes. HGD34G08S16 is engineered as a pin-to-pin compatible replacement for Winbond W634GU8NB. 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 HGD34G08S16?

No PCB or firmware change is intended. The part is designed for the same footprint and ball map as Winbond W634GU8NB. 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 HGD34G08S16 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 HGD34G08S16 specification](https://hgchips.net/parts/hgd34g08s16.html)

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Source: https://hgchips.net/alternatives/w634gu8nb.html  
Last updated: 2026-10-12