K4B4G1646D-BFMA - 4Gb DDR3 SDRAM x16 96FBGA | Samsung
MPN: K4B4G1646D-BFMA ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $8.5 | $8.50 |
| 10 | $7.8 | $78.00 |
| 100 | $7.2 | $720.00 |
| 500 | $6.8 | $3,400.00 |
| 1,000 | $6.5 | $6,500.00 |
Drop-in alternatives for K4B4G1646D-BFMA — 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:
K4B4G1646E-BYK0
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View Datasheet →K4B4G1646D-BCK00
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View Datasheet →K4B4G1646D-BHMA
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View Datasheet →K4B4G1646Q
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View Datasheet →AS4C256M16D3C-12BCN
✅ Drop-In📋 Reference alternative (not in catalog)
MT41K256M16HA-125
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View Datasheet →K4B4G1646D-BFMA Maximum Ratings & Electrical Characteristics
| Memory Type | DDR3 SDRAM |
| Density | 4Gb |
| Organization | 256M x 16 |
| Data Rate | 1866 Mbps |
| Supply Voltage | 1.5V |
| Package | 96-ball FBGA |
| Ball Pitch | 0.8mm |
| Number of Banks | 8 |
| Burst Length | 8 and 4 (with burst chop) |
| CAS Latency | Programmable |
| On-Die Termination | Yes |
| Temperature Range | 0°C to 95°C (case) |
| RoHS | Compliant |
| Lead-Free | Yes |
| Halogen-Free | Yes |
K4B4G1646D-BFMA Pin Configuration
| Pin A1 | VDD — Power supply |
| Pin A2 | VSS — Ground |
| Pin A3 | DQ0 — Data input/output 0 |
| Pin A4 | DQ1 — Data input/output 1 |
| Pin A5 | VDDQ — I/O power supply |
| Pin A6 | VSSQ — I/O ground |
| Pin A7 | DQ2 — Data input/output 2 |
| Pin A8 | DQ3 — Data input/output 3 |
| Pin A9 | VDD — Power supply |
| Pin A10 | VSS — Ground |
| Pin B1 | CK — Clock |
| Pin B2 | CK# — Complementary clock |
| Pin B3 | CKE — Clock enable |
| Pin B4 | CS# — Chip select |
| Pin B5 | RAS# — Row address strobe |
| Pin B6 | CAS# — Column address strobe |
| Pin B7 | WE# — Write enable |
| Pin B8 | ODT — On-die termination |
| Pin B9 | A0 — Address input 0 |
| Pin B10 | A1 — Address input 1 |
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 Modules, Networking Equipment, Set-Top Boxes and Consumer Electronics, Automotive Infotainment Systems, Industrial Control Systems, Medical Devices.
Desktop and Laptop Memory Modules
The K4B4G1646D-BFMA is ideal for DDR3 memory modules in desktop and laptop computers. Its 4Gb density and 1866 Mbps data rate provide high bandwidth for multitasking and gaming. The 1.5V supply is standard for DDR3, ensuring compatibility with existing memory controllers. The 96-FBGA package allows compact module designs, and the 0-95°C temperature range covers typical consumer operating conditions. When used in SO-DIMM or UDIMM modules, it delivers reliable performance for everyday computing tasks.
Recommended
Networking Equipment
In networking equipment such as 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, critical for network performance. The 4Gb density allows for large routing tables and buffering of multiple data streams. The 1.5V supply is efficient for always-on networking devices. The 96-FBGA package is suitable for space-constrained line cards, and the 0-95°C range accommodates typical networking environments.
Recommended
Set-Top Boxes and Consumer Electronics
The K4B4G1646D-BFMA is well-suited for set-top boxes and consumer electronics, providing memory for video decoding, user interfaces, and application processing. Its 4Gb density supports high-definition video streams and multiple applications. The 1866 Mbps data rate ensures smooth playback and responsive UI. The 1.5V supply is compatible with consumer power rails. The 96-FBGA package enables compact designs for slim devices. The 0-95°C temperature range covers typical home entertainment environments.
Recommended
Automotive Infotainment Systems
In automotive infotainment systems, the K4B4G1646D-BFMA provides memory for navigation, media playback, and vehicle diagnostics. Its 4Gb density supports complex graphical interfaces and large map databases. The 1866 Mbps data rate ensures fast loading of applications. The 1.5V supply is suitable for automotive power systems. The 96-FBGA package is robust for vibration-prone environments. The 0-95°C temperature range covers automotive cabin conditions, though for extended temperature ranges, consider industrial-grade variants.
Recommended
Industrial Control Systems
The K4B4G1646D-BFMA is used in industrial control systems for data logging, real-time processing, and HMI applications. Its 4Gb density allows for extensive data buffering and logging. The 1866 Mbps data rate supports real-time control loops. The 1.5V supply is common in industrial power designs. The 96-FBGA package is suitable for rugged PCBs. The 0-95°C temperature range covers most industrial environments, but for harsh conditions, verify the temperature grade of the specific variant.
Recommended
Medical Devices
In medical devices such as patient monitors and diagnostic equipment, the K4B4G1646D-BFMA provides reliable memory for data acquisition and display. Its 4Gb density supports high-resolution imaging and continuous monitoring data. The 1866 Mbps data rate ensures real-time data processing. The 1.5V supply is suitable for medical power systems. The 96-FBGA package is compact for portable devices. The 0-95°C temperature range covers clinical environments. For medical certification, ensure the device meets required standards.
Recommended
Recommended Products Summary
Engineering reference data for K4B4G1646D-BFMA — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | K4B4G1646E-BYK0 | K4B4G1646D-BCK0 | AS4C256M16D3C-12BCN | MT41K256M16HA-125 |
|---|---|---|---|---|---|
| Package | 96-FBGA | 96-FBGA | 96-FBGA | 96-FBGA | 96-FBGA |
| Brand | Samsung Electronics | Samsung Electronics | Samsung Electronics | Alliance Memory | Micron Technology |
| Density | 4Gb | 4Gb | 4Gb | 4Gb | 4Gb |
| Organization | 256M x 16 | 256M x 16 | 256M x 16 | 256M x 16 | 256M x 16 |
| Data Rate | 1866 Mbps | 1866 Mbps | [DATA_NEEDED] | 1866 Mbps | 1866 Mbps |
| Supply Voltage | 1.5V | 1.5V | 1.5V | 1.5V | 1.5V |
| Temperature Range | 0°C to 95°C | 0°C to 95°C | [DATA_NEEDED] | 0°C to 95°C | 0°C to 95°C |
| RoHS | Compliant | Compliant | Compliant | Compliant | Compliant |
Key Differentiators
- High data rate of 1866 Mbps (vs K4B4G1646D-BCK0)
- D-die architecture with proven reliability (vs K4B4G1646E-BYK0)
- Wide temperature range of 0-95°C (vs K4B4G1646D-BHMA)
Design Notes
Ensure controlled impedance traces for DQ, DQS, and clock signals to maintain signal integrity. Use 50-ohm single-ended and 100-ohm differential routing. Keep trace lengths matched within 100 mils for data and address buses. Place decoupling capacitors (0.1uF and 1uF) close to VDD and VDDQ pins to minimize power supply noise.
The K4B4G1646D-BFMA operates up to 95°C case temperature. Ensure adequate airflow or heatsinking in high-ambient environments. The 96-FBGA package has a thermal resistance of approximately [DATA_NEEDED: theta_JA]. For high-density modules, consider thermal simulation to verify junction temperature stays within limits.
Do not exceed the maximum supply voltage of 1.575V. Ensure VREFCA and VREFDQ are generated with low-noise sources, as noise on these references can degrade signal integrity. Follow the layout guidelines in the datasheet for termination and routing to avoid reflections and crosstalk.
Compliance Information
RoHS compliant and lead-free/halogen-free per Samsung datasheet. AEC-Q100 not applicable for standard DDR3 SDRAM.
