K4B4G1646D-BFMA - 4Gb DDR3 SDRAM x16 96FBGA | Samsung
MPN: K4B4G1646D-BFMA β Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $8.5 | $8.50 |
| 10 | $7.8 | $78.00 |
| 100 | $7.1 | $710.00 |
| 500 | $6.5 | $3,250.00 |
| 1,000 | $6 | $6,000.00 |
Drop-in alternatives for K4B4G1646D-BFMA β same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Quick Comparison Tool β Select alternative parts for side-by-side comparison:
K4B4G1646E-BFMA
β Drop-Inπ Reference alternative (not in catalog)
K4B4G1646D-BCMA
β Drop-Inπ Reference alternative (not in catalog)
K4B4G1646D-BYK0
β Drop-Inπ Reference alternative (not in catalog)
K4B4G1646Q-HC
β Drop-Inπ Reference alternative (not in catalog)
K4B4G1646Q-HYF8
β Drop-Inπ Reference alternative (not in catalog)
K4B4G1646D-BFMA Maximum Ratings & Electrical Characteristics
| Memory Type | DDR3 SDRAM |
| Density | 4Gb |
| Organization | 256M x 16 |
| Data Rate | 1866 Mbps |
| Supply Voltage (VDD) | 1.5V |
| Supply Voltage (VDDQ) | 1.5V |
| I/O Width | 16 bits |
| Number of Banks | 8 |
| Package | 96-FBGA |
| Ball Pitch | 0.8mm |
| Operating Temperature Range | 0Β°C to 95Β°C (case) |
| RoHS | Compliant |
| Halogen-Free | Yes |
| Lead-Free | Yes |
| CAS Latency | 13 (at 1866 Mbps) |
K4B4G1646D-BFMA Pin Configuration
| Pin A1 | VDD β Power supply (1.5V) |
| Pin A2 | DQ0 β Data I/O 0 |
| Pin A3 | DQ1 β Data I/O 1 |
| Pin B1 | VSS β Ground |
| Pin B2 | DQ2 β Data I/O 2 |
| Pin B3 | DQ3 β Data I/O 3 |
| Pin C1 | VDDQ β I/O power supply (1.5V) |
| Pin C2 | DQ4 β Data I/O 4 |
| Pin C3 | DQ5 β Data I/O 5 |
| Pin D1 | VSSQ β I/O ground |
| Pin D2 | DQ6 β Data I/O 6 |
| Pin D3 | DQ7 β Data I/O 7 |
| Pin E1 | VREFCA β Reference voltage for command/address |
| Pin E2 | VREFDQ β Reference voltage for data |
| Pin E3 | CK β Clock input |
| Pin F1 | CK# β Complementary clock input |
| Pin F2 | CKE β Clock enable |
| Pin F3 | CS# β Chip select |
| Pin G1 | RAS# β Row address strobe |
| Pin G2 | CAS# β Column address strobe |
| Pin G3 | WE# β Write enable |
| Pin H1 | A0 β Address input 0 |
| Pin H2 | A1 β Address input 1 |
| Pin H3 | A2 β Address input 2 |
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
K4B4G1646D-BFMA is suitable for 6 applications: Desktop and Laptop Memory, Networking Equipment, Set-Top Boxes and Smart TVs, Automotive Infotainment, Industrial Control Systems, Medical Devices.
Desktop and Laptop Memory
The K4B4G1646D-BFMA is used in DDR3 memory modules for desktop and laptop computers, providing 4Gb density and 1866 Mbps data rate. Its 1.5V operation and 96-FBGA package enable compact SO-DIMM designs. The high bandwidth supports multitasking and multimedia applications, while the low power consumption extends battery life in portable devices. Designers can pair it with a DDR3 controller such as the Intel Core series or AMD Ryzen processors.
Recommended
Networking Equipment
In networking equipment like routers and switches, the K4B4G1646D-BFMA provides high-speed packet buffering and routing table storage. Its 1866 Mbps data rate ensures low-latency data transfer, while the 4Gb density supports large forwarding tables. The 1.5V supply reduces power consumption in always-on infrastructure. It can be paired with network processors like the Broadcom BCM58600 series for high-throughput designs.
Recommended
Set-Top Boxes and Smart TVs
The K4B4G1646D-BFMA is ideal for set-top boxes and smart TVs, where it stores video buffers, application code, and user data. Its 4Gb density supports Full HD and 4K video streaming, while the 1866 Mbps data rate ensures smooth playback. The 96-FBGA package allows for slim device designs. It works with SoCs like the Amlogic S905X3, which integrates a DDR3 controller.
Recommended
Automotive Infotainment
In automotive infotainment systems, the K4B4G1646D-BFMA provides memory for navigation maps, media playback, and instrument cluster graphics. Its 4Gb density and 1866 Mbps speed handle demanding applications, while the 1.5V supply is compatible with automotive power rails. Although not AEC-Q100 qualified, it can be used in non-safety-critical infotainment systems. It pairs with automotive SoCs like the Qualcomm Snapdragon Automotive Platform.
Recommended
Industrial Control Systems
The K4B4G1646D-BFMA is used in industrial control systems for data logging, HMI displays, and real-time control. Its 4Gb density stores large datasets, while the 1866 Mbps data rate supports fast processing. The 0Β°C to 95Β°C operating temperature range suits industrial environments. It can be paired with PLCs or industrial PCs that use DDR3 memory, such as those based on Intel Atom processors.
Recommended
Medical Devices
In medical devices like patient monitors and imaging equipment, the K4B4G1646D-BFMA provides reliable memory for real-time data processing and storage. Its 4Gb density supports high-resolution imaging, while the 1866 Mbps data rate ensures fast data transfer. The RoHS compliance and halogen-free construction meet medical environmental standards. It can be used with medical-grade processors like the NXP i.MX 8 series.
Recommended
Recommended Products Summary
Engineering reference data for K4B4G1646D-BFMA β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | K4B4G1646E-BFMA | K4B4G1646D-BCMA | K4B4G1646Q-HC |
|---|---|---|---|---|
| Package | 96-FBGA | 96-FBGA | 96-FBGA | 96-FBGA |
| Brand | Samsung Electronics | Samsung Electronics | Samsung Electronics | SMARTsemi |
| Density | 4Gb | 4Gb | 4Gb | 4Gb |
| Organization | 256M x 16 | 256M x 16 | 256M x 16 | 256M x 16 |
| Data Rate | 1866 Mbps | 1866 Mbps | 1600 Mbps | [DATA_NEEDED] |
| Supply Voltage | 1.5V | 1.5V | 1.5V | 1.5V |
| Operating Temperature | 0Β°C to 95Β°C | 0Β°C to 95Β°C | 0Β°C to 95Β°C | [DATA_NEEDED] |
| RoHS | Compliant | Compliant | Compliant | [DATA_NEEDED] |
Key Differentiators
- Higher data rate than BCMA variant (vs K4B4G1646D-BCMA)
- D-die revision with proven reliability (vs K4B4G1646E-BFMA)
- Samsung brand quality (vs K4B4G1646Q-HC)
Design Notes
For the K4B4G1646D-BFMA, ensure controlled impedance of 50 ohms for DQ, DQS, and clock traces. Use a 4-layer PCB with dedicated power and ground planes. Place decoupling capacitors (0.1uF and 1uF) close to each VDD and VDDQ pin. Follow the layout guidelines in the Samsung datasheet to minimize signal integrity issues.
The K4B4G1646D-BFMA requires a clean 1.5V supply for VDD and VDDQ. Use a low-noise LDO or a switching regulator with proper filtering. The VREFCA and VREFDQ should be generated from a low-noise source, typically a resistor divider with a bypass capacitor. Ensure the supply can handle the peak current during read/write operations.
The K4B4G1646D-BFMA has a maximum case temperature of 95Β°C. In high-density designs, ensure adequate airflow or a heatsink to keep the temperature within limits. The 96-FBGA package has a thermal resistance of [DATA_NEEDED: theta_JA], so calculate the power dissipation based on the operating current and verify the junction temperature.
Compliance Information
RoHS compliant and halogen-free per Samsung datasheet. Not AEC-Q100 qualified.
