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Home / Part Numbers / W634GU8NB alternative

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

Every field below is compared line by line against the original manufacturer's public datasheet before a part is offered as a replacement.

ParameterWinbond W634GU8NB (original)HGD34G08S16 (HGCHIPS)Match
Density (Gbit)44✔ Same
Organization256Mx8512Mx8◐ Confirm (x8 organization)
Speed GradeDDR3-1600DDR3-1600✔ Same
Voltage (V)1.35 (DDR3L)1.5 (DDR3)◐ Confirm (voltage rail)
Package96-ball VFBGAVFBGA-96✔ Same
Temperature GradeCommercial (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. 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.

Why switch

Reasons teams open a second source on W634GU8NB

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Supply certainty

When the original is on allocation or past end-of-life, HG parts ship from physical stock — stock lines in 48 hours from Shenzhen.

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Tested, not claimed

Every lot ships with traceable validation records for your incoming QA.

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Engineering support

Datasheet-level comparison and application support from our Taiwan and Shenzhen engineering team.

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 →
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