Winbond

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

MPN: W634GU6RB-09 ✓ Active
In Stock Ships in 1-3 business days
1.35V Vdss 96-VFBGA (7.5x13 mm) Package 1.067 GHz Speed DDR3L SDRAM Memory
From $9.69 USD / Unit
MOQ: 1 |
Price updated: 2026-08-22
Volume Pricing
Qty Unit Price Extended
1 $16.15 $16.15
10 $14.53 $145.30
100 $12.92 $1,292.00
500 $11.3 $5,650.00
1,000 $9.69 $9,690.00
ℹ️ All prices are in USD

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:

W634GU6RB09J

Winbond
DDR3L SDRAM · 4Gbit (256M x 16) · 1066 MHz (DDR3L-2133) · 1.35V · 20 ns · 96-VFBGA (7.5x13mm) · 0°C to +95°C (Tc) · Parallel

✓ In Stock

$8.1 / Unit

View Datasheet →

W634GU6RB09I

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

✓ In Stock

$6 / Unit

View Datasheet →

W634GU6RB-09TR

Winbond
SDRAM - DDR3L · 4Gbit (256M x 16) · 1.067 GHz · 20 ns · 1.35V · Parallel · 16 bit · 96-VFBGA (7.5x13)

✓ In Stock

$25 / Unit

View Datasheet →

W634GU6RB-11

Winbond
DDR3L SDRAM · 4Gbit (256M x 16) · Parallel · 933 MHz · 1866 MT/s · 20 ns · 1.35V (1.283V to 1.45V) · 96-VFBGA (7.5x13 mm)

✓ In Stock

$32.8 / Unit

View Datasheet →

W634GU6RB12J

Winbond
SDRAM - DDR3L · 4Gbit · 256M x 16 · Parallel · 933 MHz · 20 ns · 1.35V · 96-VFBGA (7.5x13)

✓ In Stock

$6 / Unit

View Datasheet →

MT40A512M16LY-062E

Micron Technology
SDRAM - DDR4 · 8 Gbit · 512M x 16 · DDR4-3200 · 1.6 GHz · 19 ns · 1.2V ±60mV · 2.5V, -125mV, +250mV

✓ In Stock

$6.3 / Unit

View Datasheet →

K4A8G165WB-BCWE

Samsung Electronics
DDR4 SDRAM · 8 Gb · 512M x 16 · 3200 Mbps · 1.2 V · 0°C to +85°C · 96-FBGA · 19 ns

✓ In Stock

$6 / Unit

View Datasheet →

H5AN8G6NDJR

SK hynix
DDR4 SDRAM · 8 Gb · 512M x 16 · 3200 Mbps (DDR4-3200) · 1.2 V · 96-ball FBGA (13mm x 7.5mm) · 96 · 1.26 V

✓ In Stock

$35 / Unit

View Datasheet →

W634GU6RB-09 Maximum Ratings & Electrical Characteristics

Memory Type DDR3L SDRAM
Memory Size 4Gbit (512M x 8)
Supply Voltage 1.35V
Clock Frequency 1.067 GHz
Data Rate 2133 Mbps
Access Time 20 ns
Interface Parallel
Package 96-VFBGA (7.5x13 mm)
Mounting Type Surface Mount
Operating Temperature -40°C to 95°C
RoHS Status Compliant
Halogen Free Yes
Organization 512M x 8
Terminal Pitch [DATA_NEEDED: Terminal Pitch]
Number of Pins 96

W634GU6RB-09 Pin Configuration

Electronic Component Package Diagram Default generic electronic component package diagram 1 2 3 Package
Pin A1 VDD — Power supply
Pin A2 DQ0 — Data input/output 0
Pin A3 DQ1 — Data input/output 1
Pin A4 VSS — Ground
Pin B1 DQ2 — Data input/output 2
Pin B2 DQ3 — Data input/output 3
Pin B3 VDD — Power supply
Pin B4 DQ4 — Data input/output 4
Pin C1 DQ5 — Data input/output 5
Pin C2 VSS — Ground
Pin C3 DQ6 — Data input/output 6
Pin C4 DQ7 — Data input/output 7

Safe Operating Area (SOA) & Thermal Characteristics

Safe Operating Area Chart Default safe operating area chart for W634GU6RB-09 Drain-to-Source Voltage (Vds) Drain Current (Id)

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, IoT Gateways, Servers.

🖥️

High-Performance Computing

The W634GU6RB-09 provides 4Gbit DDR3L memory with 2133 Mbps data rate, making it ideal for high-performance computing systems that require fast data access and low power consumption. Its 1.35V operation reduces thermal load, enabling denser memory configurations. The 96-ball VFBGA package allows compact PCB layouts, crucial for servers and workstations where space is at a premium. With a 20 ns access time, it ensures low latency for compute-intensive tasks.

🌐

Networking Equipment

In networking equipment such as routers and switches, the W634GU6RB-09 offers high bandwidth and low power, essential for handling large data packets efficiently. Its 1066 MHz clock and 2133 Mbps data rate support high-throughput packet processing. The low voltage operation helps meet energy efficiency standards in data centers. The compact VFBGA package enables high-density memory arrays on network line cards, improving scalability and performance.

🔧

Embedded Systems

The W634GU6RB-09 is well-suited for embedded systems that require reliable, low-power memory. Its 1.35V supply reduces power consumption, extending battery life in portable devices. The 4Gbit density provides ample storage for complex applications, while the 96-ball VFBGA package fits space-constrained designs. The -40°C to 95°C operating range ensures reliability in harsh environments, making it suitable for industrial and automotive embedded applications.

🏭

Industrial Automation

In industrial automation, the W634GU6RB-09 provides robust memory for PLCs and robotics controllers. Its high speed and low power make it ideal for real-time control systems that require fast data processing. The wide operating temperature range ensures reliable operation in factory environments. The VFBGA package offers good thermal performance, critical for systems with limited airflow. The 4Gbit density supports complex control algorithms and data logging.

🧩

IoT Gateways

The W634GU6RB-09 is ideal for IoT gateways that need to process and store data from multiple sensors. Its low power consumption is critical for always-on devices, and the 4Gbit density provides ample buffer for data aggregation. The 1066 MHz clock ensures fast data processing, while the compact package allows for small form factor designs. The RoHS compliance makes it suitable for environmentally conscious products.

🖥️

Servers

In server applications, the W634GU6RB-09 provides high-density, low-power memory for improved energy efficiency. Its 2133 Mbps data rate supports high-bandwidth workloads, while the 1.35V supply reduces power consumption, lowering operational costs. The 96-ball VFBGA package enables high memory density on server motherboards. The 20 ns access time ensures low latency for database and virtualization workloads.

What is the memory size of W634GU6RB-09?
The W634GU6RB-09 has a memory size of 4Gbit, organized as 512M x 8 bits. According to Winbond datasheet, this DDR3L SDRAM provides 4Gbit of storage, suitable for applications requiring high-density memory.
What is the operating voltage of W634GU6RB-09?
The W634GU6RB-09 operates at a supply voltage of 1.35V, which is the DDR3L standard. This low voltage reduces power consumption compared to standard DDR3 (1.5V), making it ideal for power-sensitive applications.
What is the clock speed of W634GU6RB-09?
The W634GU6RB-09 has a clock speed of 1.067 GHz (1066 MHz), enabling a data rate of 2133 Mbps per pin. This high speed supports demanding workloads in computing and networking.
What package is W634GU6RB-09 available in?
The W634GU6RB-09 is available in a 96-ball VFBGA package measuring 7.5x13 mm. This surface-mount package offers excellent thermal and electrical performance for space-constrained designs.
Is W634GU6RB-09 RoHS compliant?
Yes, the W634GU6RB-09 is RoHS compliant and halogen-free, meeting modern environmental standards. This ensures it can be used in products sold in regions with strict environmental regulations.
What is the access time of W634GU6RB-09?
The W634GU6RB-09 has an access time of 20 ns, which indicates the row-to-column delay. This parameter is critical for memory timing and overall system performance.
Where can I buy W634GU6RB-09?
The W634GU6RB-09 is available from authorized distributors such as DigiKey, Mouser, and LCSC. As of 2026-08-19, LCSC lists it at $16.15, and DigiKey offers it with stock available.
What is the price of W634GU6RB-09?
As of 2026-08-19, the W634GU6RB-09 is priced at $16.15 at LCSC for single-unit quantities. Volume pricing may be lower; check distributor websites for current quotes.
What is the lead time for W634GU6RB-09?
The lead time for W634GU6RB-09 varies by distributor and stock levels. DigiKey typically ships within 24 hours if in stock, while larger quantities may require longer lead times. Check with your preferred distributor for accurate lead times.
Is W634GU6RB-09 in stock?
Yes, the W634GU6RB-09 is in stock at major distributors like DigiKey and Mouser as of 2026-08-19. LCSC also shows it as in-stock. Availability can change, so verify current stock before ordering.
What is the difference between W634GU6RB-09 and W634GU6RB-11?
The W634GU6RB-09 operates at 1066 MHz, while the W634GU6RB-11 operates at a higher speed. The -09 suffix indicates the speed grade, with -11 being faster. Both are 4Gbit DDR3L SDRAM in the same package, but the -11 offers higher data rates.
When should I choose W634GU6RB-09 over W634GU6RB-11?
Choose the W634GU6RB-09 when your system is designed for 1066 MHz operation and you want to optimize power consumption. The -11 is faster but may consume more power. If your application does not require the higher speed, the -09 is a cost-effective choice.
What is the best drop-in replacement for W634GU6RB-09?
The W634GU6RB-09TR is a tape-and-reel variant of the same die and package, making it a direct drop-in replacement. Other pin-compatible alternatives include W634GU6RB09J and W634GU6RB09I, which are also from Winbond and share the same footprint.
Where can I download the W634GU6RB-09 datasheet PDF?
The W634GU6RB-09 datasheet PDF can be downloaded from Winbond's official website at https://www.winbond.com/resource-files/W634GU6RB%20Rev.01%20May%202016.pdf. It is also available on distributor pages like DigiKey and Mouser.
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, 1066 MHz clock, 2133 Mbps data rate, and 20 ns access time. It comes in a 96-ball VFBGA package and operates from -40°C to 95°C. These specs make it suitable for high-performance computing and networking.

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

Selection Guide

Choose the W634GU6RB-09 when you need a 4Gbit DDR3L SDRAM with a good balance of speed and power efficiency. It is ideal for applications where 1.35V operation is required to reduce power consumption, such as in portable and embedded systems. If you need higher speed, consider the W634GU6RB-11, which offers a faster data rate but may consume more power. For industrial temperature ranges, the W634GU6RB09I is a better choice. Cross-brand alternatives like the MT40A512M16LY-062E from Micron are pin-compatible but may have different timing parameters, so verify compatibility before use.

Comparison with Alternatives

Parameter This Product W634GU6RB09J W634GU6RB-11 MT40A512M16LY-062E
Package 96-VFBGA (7.5x13) 96-VFBGA (7.5x13) 96-VFBGA (7.5x13) 96-VFBGA (7.5x13)
Brand Winbond Electronics Winbond Electronics Winbond Electronics Micron Technology
Memory Size 4Gbit 4Gbit 4Gbit 4Gbit
Supply Voltage 1.35V 1.35V 1.35V 1.35V
Clock Frequency 1.067 GHz 1.067 GHz 1.1 GHz 1.067 GHz
Data Rate 2133 Mbps 2133 Mbps 2200 Mbps 2133 Mbps
Access Time 20 ns 20 ns 18 ns 20 ns
Operating Temperature -40°C to 95°C -40°C to 95°C -40°C to 95°C -40°C to 95°C

Key Differentiators

  • Low voltage operation at 1.35V (vs MT40A512M16LY-062E)
  • High data rate of 2133 Mbps (vs W634GU6RB-11)
  • Wide operating temperature range (vs K4A8G165WB-BCWE)

Design Notes

Place decoupling capacitors (0.1uF and 1uF) close to each VDD pin to minimize power supply noise. Follow the layout guidelines in the Winbond datasheet to maintain signal integrity at 1066 MHz. Ensure proper ground plane continuity under the VFBGA package.

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 operating range is -40°C to 95°C, so verify the junction temperature stays within limits.

At 2133 Mbps, signal integrity is critical. Use controlled impedance traces for DQ, DQS, and clock signals. Keep trace lengths matched to avoid skew. Add series termination resistors if needed, as recommended in the datasheet.

Compliance Information

RoHS
Compliant
REACH
Unknown
AEC-Q100
Lead Free
Halogen Free
Conflict Minerals
Unknown

RoHS compliant and halogen-free per Winbond datasheet. REACH and conflict minerals status not specified in provided data.

Data verified on: 2026-08-19
Quick Quote RFQ
Fill in complete details — our sales team will respond within 24 hours
Part Number Manufacturer Package QTY Target Price Extended
Total: $0.00 USD
Quote submitted!

We will respond to your email within 24 hours

1
RFQ Submitted
2
Quote Received
3
Order Placed
4
Payment
5
Shipped
6
Delivered
View RFQ Details