# K4UBE3D4AM-GFCL In Stock — Domestic Replacement HGD4F32S37 PIN2PIN No-Redesign | HGCHIPS

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# K4UBE3D4AM-GFCL in stock — HGD4F32S37 domestic drop-in replacement (PIN2PIN, no redesign)

**HGD4F32S37** is a pin-to-pin compatible replacement for **Samsung K4UBE3D4AM-GFCL**, matching density (32 Gbit) and organization (x32). Note the original is LPDDR4X (1.1 V / 0.6 V) while HGD4F32S37 is LPDDR4 (1.8/1.1/1.1 V) — confirm the voltage rail, speed grade and ball map before switching. Samples start at 10 pcs.

Specification comparison

## K4UBE3D4AM-GFCL vs HGD4F32S37 — what has to match

| Parameter | Samsung K4UBE3D4AM-GFCL (original) | HGD4F32S37 (HGCHIPS) | Match |
| --- | --- | --- | --- |
| Density (Gbit) | 32 | 32 | ✔ Same |
| Organization | x32 | x32 | ✔ Same |
| Speed Grade | LPDDR4X-4266 | LPDDR4-3733 | ◐ Confirm (speed grade) |
| Voltage (V) | 1.1/0.6 (LPDDR4X) | 1.8/1.1/1.1 (LPDDR4) | ◐ Confirm (VDDQ) |
| Package | FBGA | VFBGA-200 | ◐ Confirm (ball map) |
| Temperature Grade | Commercial (0~+95C) | Commercial (0~+95C) | ✔ Same |

K4UBE3D4AM-GFCL is a 32 Gbit LPDDR4X part in the Samsung K4U series (EOL announced April 2026); HGD4F32S37 is the closest stocked 32 Gbit x32 LPDDR4 alternative. Confirm the LPDDR4X vs LPDDR4 voltage and speed difference before design-in.

FAQ

## K4UBE3D4AM-GFCL alternative — common questions

### Is HGD4F32S37 a direct replacement for Samsung K4UBE3D4AM-GFCL?

Yes. HGD4F32S37 is engineered as a pin-to-pin compatible replacement for Samsung K4UBE3D4AM-GFCL. 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 HGD4F32S37?

No PCB or firmware change is intended. The part is designed for the same footprint and ball map as Samsung K4UBE3D4AM-GFCL. 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 HGD4F32S37 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 HGD4F32S37 specification](https://hgchips.net/parts/hgd4f32s37.html)

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Source: https://hgchips.net/alternatives/k4ube3d4am-gfcl.html  
Last updated: 2026-10-13