Winbond

W634GU6RB-09 - 4Gb DDR3L SDRAM 1066MHz | Winbond

Name: W634GU6RB-09
Brand: Winbond Electronics
Price: 38.01 USD
Availability: InStock

MPN: W634GU6RB-09 ✓ Active

In Stock (99,999) Ships in 1-3 business days

1.35V Vdss [DATA_NEEDED: supply current] Id 96-VFBGA (7.5x13) Package 1.067 GHz Speed DDR3L SDRAM Memory

$38.01 USD / Unit

MOQ: 1 |

Volume Pricing

Qty	Unit Price	Extended
1	$38.01	$38.01
10	$35.5	$355.00
100	$30.2	$3,020.00
500	$25.8	$12,900.00
1,000	$22.5	$22,500.00

ℹ️ All prices are in USD

View Datasheet (PDF) View Alternatives

Quantity

Drop-in alternatives for W634GU6RB-09 — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.

Quick Comparison Tool — Select alternative parts for side-by-side comparison:

W634GU6RB09I

✅ Drop-In

Winbond

📦 96-VFBGA (7.5x13)

DDR3L SDRAM · 4Gbit (256M x 16) · 16 bit · 1.067 GHz · 20 ns · 1.35 V · 96-VFBGA (7.5x13 mm) · -40C to +95C

✓ 99,999 In Stock

$6 / Unit

View Datasheet →

W634GU6RB-09-TR

✅ Drop-In

📦 96-VFBGA (7.5x13)

Tape and reel packaging variant

📋 Reference alternative (not in catalog)

W634GU6RB-11

✅ Drop-In

Winbond

📦 96-VFBGA (7.5x13)

SDRAM - DDR3L · 4Gbit (256M x 16) · Parallel · 933 MHz · 20 ns · 1.35V (1.283V to 1.45V) · 96-VFBGA (7.5x13 mm) · -40°C to +95°C

✓ 99,999 In Stock

$32.8 / Unit

View Datasheet →

K4B4G0846E

✅ Drop-In

📦 96-FBGA (7.5x13)

Cross-brand, same density and package, verify pinout

📋 Reference alternative (not in catalog)

MT41K512M8DA-107

✅ Drop-In

📦 96-FBGA (7.5x13)

Cross-brand, same density and package, verify pinout

📋 Reference alternative (not in catalog)

W634GU6RB-09 Maximum Ratings & Electrical Characteristics

Memory Type	DDR3L SDRAM
Memory Size	4Gbit (512M x 8)
Clock Frequency	1.067 GHz
Data Rate	2133 Mbps
Access Time	20 ns
Supply Voltage	1.35V
Interface	Parallel
Package	96-VFBGA (7.5x13)
Mounting Type	Surface Mount
Operating Temperature	[DATA_NEEDED: operating temperature range]
RoHS Status	Compliant
Halogen Free	Yes
Organization	512M x 8
Number of Pins	96
Supply Current	[DATA_NEEDED: supply current]

W634GU6RB-09 Pin Configuration

Pin A1	VDD — Power supply (1.35V)
Pin A2	DQ0 — Data input/output 0
Pin A3	DQ1 — Data input/output 1
Pin B1	VSS — Ground
Pin B2	DQ2 — Data input/output 2
Pin B3	DQ3 — Data input/output 3
Pin C1	VDDQ — I/O power supply
Pin C2	DQ4 — Data input/output 4
Pin C3	DQ5 — Data input/output 5
Pin D1	VSSQ — I/O ground
Pin D2	DQ6 — Data input/output 6
Pin D3	DQ7 — Data input/output 7

Safe Operating Area (SOA) & Thermal Characteristics

No official SOA curve available for this digital IC. Always operate within absolute maximum ratings specified in the datasheet. Ensure adequate cooling and derate as needed.

Typical Applications

W634GU6RB-09 is suitable for 6 applications: High-Performance Computing, Networking Equipment, Embedded Systems, Industrial Automation, Consumer Electronics, Automotive Infotainment.

🖥️

High-Performance Computing

The W634GU6RB-09 provides 4Gb DDR3L memory with 2133 Mbps data rate, ideal for servers and workstations requiring fast data access. Its low 1.35V operation reduces power consumption in data centers, and the 96-ball VFBGA package fits compact server boards. The high bandwidth supports multi-core processors and large datasets, while the low voltage helps meet energy efficiency standards.

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Networking Equipment

In routers and switches, the W634GU6RB-09 offers high-speed memory for packet buffering and routing tables. The 1.067 GHz clock enables fast data throughput, while the 1.35V supply minimizes heat generation in dense networking hardware. Its 4Gb capacity supports large routing tables and concurrent connections, making it suitable for enterprise and carrier-grade equipment.

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Embedded Systems

The W634GU6RB-09 is well-suited for embedded systems requiring low power and high speed. Its 1.35V operation extends battery life in portable devices, while the 4Gb density provides ample storage for applications like industrial control and IoT gateways. The VFBGA package is ideal for space-constrained PCBs, and the 20 ns access time ensures responsive performance.

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Industrial Automation

For industrial automation, the W634GU6RB-09 offers reliable high-speed memory for PLCs and robotics. The 1.35V low-voltage operation reduces power dissipation in harsh environments, and the 4Gb capacity supports complex control algorithms. The 96-ball VFBGA package provides robust solder joints for vibration resistance, and the 2133 Mbps data rate enables real-time data processing.

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Consumer Electronics

In consumer devices like smart TVs and set-top boxes, the W634GU6RB-09 provides high-bandwidth memory for multimedia processing. The 1.35V supply helps meet energy efficiency regulations, while the 4Gb capacity supports HD video streaming and multitasking. The compact VFBGA package enables slim device designs, and the 2133 Mbps data rate ensures smooth playback.

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Automotive Infotainment

The W634GU6RB-09 can be used in automotive infotainment systems, offering high-speed memory for navigation and media playback. Its 1.35V operation reduces heat in the cabin, and the 4Gb capacity supports large map databases. The VFBGA package is suitable for automotive PCBs, but note that this part is not AEC-Q100 qualified; for automotive-grade, consider Winbond's AEC-Q100 parts.

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STM32H747BGT6 · STMicroelectronics

Recommended Products Summary

STM32H753BGT6 STMicroelectronics Used in: High-Performance Computing STM32F769NIH6 STMicroelectronics Used in: Networking Equipment STM32L475VGT6 STMicroelectronics Used in: Embedded Systems STM32F303VET6 STMicroelectronics Used in: Industrial Automation STM32F746NGH6 STMicroelectronics Used in: Consumer Electronics STM32H747BGT6 STMicroelectronics Used in: Automotive Infotainment

What is the memory size of W634GU6RB-09?

The W634GU6RB-09 is a 4Gbit DDR3L SDRAM, organized as 512M x 8 bits. According to Winbond's datasheet, this density provides 512 megabytes of memory, suitable for applications requiring moderate capacity with low power consumption.

What is the operating voltage of W634GU6RB-09?

The W634GU6RB-09 operates at 1.35V, which is the DDR3L standard voltage. This lower voltage reduces power consumption by about 20% compared to standard DDR3 (1.5V), making it ideal for battery-powered and energy-efficient devices.

What is the clock speed of W634GU6RB-09?

The W634GU6RB-09 has a clock frequency of 1.067 GHz, corresponding to a data rate of 2133 Mbps per pin. This high speed enables fast data transfer for demanding applications like networking and computing.

What package does W634GU6RB-09 come in?

The W634GU6RB-09 is housed in a 96-ball VFBGA package measuring 7.5x13 mm. This compact, surface-mount package is suitable for space-constrained PCB designs and offers good thermal performance.

Is W634GU6RB-09 RoHS compliant?

Yes, the W634GU6RB-09 is RoHS compliant and halogen-free, as stated in Winbond's product documentation. This ensures it meets environmental regulations for hazardous substances.

What is the price of W634GU6RB-09?

As of 2026-08-18, the unit price for W634GU6RB-09 is $38.01 at DigiKey, while LCSC lists it at $16.15. Prices vary by distributor and quantity; check current stock for the best deal.

Where can I buy W634GU6RB-09?

W634GU6RB-09 is available from authorized distributors such as DigiKey, Mouser, and LCSC. DigiKey shows 170 units in stock as of 2026-08-18. You can also check Winbond's official distributors for bulk orders.

What is the lead time for W634GU6RB-09?

The lead time for W634GU6RB-09 depends on the distributor and order quantity. DigiKey lists it as 'ships today' for in-stock items, while larger orders may require 8-12 weeks. Contact your distributor for accurate lead times.

What is the difference between W634GU6RB-09 and W634GU6RB-11?

The W634GU6RB-09 and W634GU6RB-11 are both 4Gb DDR3L SDRAMs from Winbond, but they differ in speed grade. The -09 suffix indicates a 1066 MHz clock (2133 Mbps), while -11 likely indicates a lower speed grade. Check the datasheet for exact specifications.

Can W634GU6RB-09 be used in automotive applications?

The W634GU6RB-09 is not explicitly rated for automotive use (AEC-Q100) in the available data. For automotive-grade memory, consider Winbond's AEC-Q100 qualified parts. Verify with the manufacturer for specific automotive requirements.

What is the best drop-in replacement for W634GU6RB-09?

The W634GU6RB09I is a parametric equivalent from Winbond, offering the same 4Gb DDR3L specifications in the same 96-VFBGA package. It is a drop-in replacement, but verify pin compatibility and timing parameters before production use.

Is W634GU6RB-09 the same as W634GU6RB09I?

The W634GU6RB-09 and W634GU6RB09I are both 4Gb DDR3L SDRAMs from Winbond, but the 'I' suffix may indicate a different temperature grade or revision. They are parametrically equivalent, but check the datasheet for differences in operating temperature or timing.

What are the key specifications of W634GU6RB-09 that engineers should know?

The W634GU6RB-09 is a 4Gbit DDR3L SDRAM with 512M x 8 organization, 1.35V supply, 1.067 GHz clock, 2133 Mbps data rate, and 20 ns access time. It comes in a 96-ball VFBGA package and is RoHS compliant. These specs make it suitable for low-power, high-speed memory applications.

What is the best Samsung equivalent for W634GU6RB-09?

A Samsung equivalent for W634GU6RB-09 would be a 4Gb DDR3L SDRAM in a 96-ball FBGA package, such as K4B4G0846E. However, pin compatibility must be verified, as package and pinout may differ. Always check the datasheet before substituting.

Engineering reference data for W634GU6RB-09 — comparison, design guidance, and compliance information.

Selection Guide

Choose the W634GU6RB-09 when you need a 4Gb DDR3L SDRAM with high speed (2133 Mbps) and low power (1.35V) in a compact 96-ball VFBGA package. It is ideal for computing, networking, and embedded applications where power efficiency and performance are critical. If you require industrial temperature range, consider the W634GU6RB09I variant. For automotive applications, verify AEC-Q100 qualification, as this part is not explicitly rated. Cross-brand alternatives like Samsung K4B4G0846E may be pin-compatible but require verification of timing and pinout. The -09-TR variant is identical but supplied in tape and reel for automated assembly.

Comparison with Alternatives

Parameter	This Product	W634GU6RB09I	W634GU6RB-09-TR	K4B4G0846E
Package	96-VFBGA (7.5x13)	96-VFBGA (7.5x13)	96-VFBGA (7.5x13)	96-FBGA (7.5x13)
Brand	Winbond Electronics	Winbond Electronics	Winbond Electronics	Samsung Electronics
Memory Size	4Gbit	4Gbit	4Gbit	4Gbit
Clock Frequency	1.067 GHz	1.067 GHz	1.067 GHz	[DATA_NEEDED]
Supply Voltage	1.35V	1.35V	1.35V	1.35V
Access Time	20 ns	20 ns	20 ns	[DATA_NEEDED]
Data Rate	2133 Mbps	2133 Mbps	2133 Mbps	[DATA_NEEDED]
RoHS	Compliant	Compliant	Compliant	Compliant

Key Differentiators

Low voltage operation at 1.35V (vs K4B4G0846E)
High data rate of 2133 Mbps (vs W634GU6RB-11)
RoHS compliant and halogen-free (vs K4B4G0846E)

Design Notes

Place 0.1uF decoupling capacitors close to each VDD and VDDQ pin, and a 10uF bulk capacitor near the power entry. Follow the layout guidelines in the Winbond datasheet to minimize trace lengths for DQ and address lines, ensuring signal integrity at 2133 Mbps.

The VFBGA package has a thermal resistance that should be considered. Ensure adequate airflow or a thermal pad to dissipate heat, especially in high-temperature environments. The 1.35V operation reduces power, but verify junction temperature stays within limits.

Do not exceed the absolute maximum ratings for VDD (1.575V) and VDDQ. Ensure the memory controller is configured for DDR3L (1.35V) operation, not DDR3 (1.5V), to prevent damage. Use proper termination for the data bus to avoid reflections.