K4B4G1646D-BCK0 - 4Gb DDR3L SDRAM 256Mx16 | Samsung
MPN: K4B4G1646D-BCK0 ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $3.5 | $3.50 |
| 10 | $3.2 | $32.00 |
| 100 | $2.9 | $290.00 |
| 500 | $2.6 | $1,300.00 |
| 1,000 | $2.3 | $2,300.00 |
Drop-in alternatives for K4B4G1646D-BCK0 — 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
✅ Drop-In✓ In Stock
$1.8 / Unit
View Datasheet →K4B4G1646D-BMK0
✅ Drop-In✓ In Stock
$5.9 / Unit
View Datasheet →K4B4G1646D-BYK00
✅ Drop-In✓ In Stock
$7.5 / Unit
View Datasheet →MT41K256M16HA-125
✅ Drop-In✓ In Stock
$6.3636 / Unit
View Datasheet →MT41K256M16TW-107
✅ Drop-In✓ In Stock
$17.5 / Unit
View Datasheet →AS4C256M16D3L-12BCN
✅ Drop-In✓ In Stock
$6 / Unit
View Datasheet →K4B4G1646D-BCK0 Maximum Ratings & Electrical Characteristics
| Memory Type | DDR3L SDRAM |
| Density | 4 Gb |
| Organization | 256M x 16 |
| Number of Banks | 8 |
| Data Rate | 1600 Mbps per pin |
| Clock Frequency | 800 MHz |
| Supply Voltage (VDD) | 1.35V (1.283V to 1.45V) |
| Supply Voltage (VDDQ) | 1.35V (1.283V to 1.45V) |
| CAS Latency | 11 (programmable) |
| Burst Length | 8, 4 |
| Package | 96-ball FBGA (13 x 9 mm, 0.8 mm pitch) |
| Operating Temperature | 0°C to 95°C (Tc) |
| RoHS | Compliant |
| Lead-Free | Yes |
| Halogen-Free | Yes |
K4B4G1646D-BCK0 Pin Configuration
| Pin A1 | VDD — Power supply |
| Pin A2 | DQ0 — Data input/output 0 |
| Pin A3 | DQ1 — Data input/output 1 |
| Pin A4 | VSS — Ground |
| Pin A5 | DQ2 — Data input/output 2 |
| Pin A6 | DQ3 — Data input/output 3 |
| Pin A7 | VDDQ — I/O power supply |
| Pin A8 | DQ4 — Data input/output 4 |
| Pin A9 | DQ5 — Data input/output 5 |
| Pin A10 | VSS — Ground |
| Pin A11 | DQ6 — Data input/output 6 |
| Pin A12 | DQ7 — Data input/output 7 |
| Pin B1 | VSS — Ground |
| Pin B2 | DQ8 — Data input/output 8 |
| Pin B3 | DQ9 — Data input/output 9 |
| Pin B4 | VDD — Power supply |
| Pin B5 | DQ10 — Data input/output 10 |
| Pin B6 | DQ11 — Data input/output 11 |
| Pin B7 | VSS — Ground |
| Pin B8 | DQ12 — Data input/output 12 |
| Pin B9 | DQ13 — Data input/output 13 |
| Pin B10 | VDDQ — I/O power supply |
| Pin B11 | DQ14 — Data input/output 14 |
| Pin B12 | DQ15 — Data input/output 15 |
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-BCK0 is suitable for 6 applications: Laptop Memory Modules, Networking Equipment, Embedded Systems, Automotive Infotainment, Industrial PCs, Consumer Electronics.
Laptop Memory Modules
The K4B4G1646D-BCK0 is ideal for laptop memory modules (SO-DIMM) due to its 1.35V low-voltage operation, which reduces power consumption and extends battery life. Its 4Gb density and x16 organization allow for compact module designs. The DDR3-1600 speed meets the performance requirements of mainstream laptops, providing a balance between speed and power efficiency. When used in a SO-DIMM, the device's 96-ball FBGA package enables high-density assembly on small PCBs. The low operating voltage also reduces heat generation, improving thermal management in thin laptops.
Recommended
Networking Equipment
In networking equipment such as routers and switches, the K4B4G1646D-BCK0 provides high-bandwidth memory for packet buffering and routing tables. Its 1600 Mbps data rate ensures fast data throughput, while the 1.35V operation reduces power consumption in always-on devices. The 96-ball FBGA package allows for compact PCB layouts, essential for high-port-count designs. The device's on-die termination and internal calibration features help maintain signal integrity in high-speed digital environments, reducing bit errors and improving reliability. This makes it suitable for enterprise and carrier-grade networking hardware.
Recommended
Embedded Systems
The K4B4G1646D-BCK0 is well-suited for embedded systems like single-board computers and industrial controllers. Its 4Gb density provides ample memory for operating systems and applications, while the x16 interface simplifies connection to microprocessors. The 1.35V operation is compatible with low-power embedded processors, and the commercial temperature range (0°C to 95°C) covers typical indoor environments. The device's self-refresh and auto-refresh modes help reduce power in idle states, which is critical for battery-powered or energy-efficient embedded designs. The FBGA package is robust for industrial environments.
Recommended
Automotive Infotainment
In automotive infotainment systems, the K4B4G1646D-BCK0 provides reliable memory for navigation, multimedia, and connectivity features. Its 1.35V operation reduces power draw from the vehicle's electrical system, and the commercial temperature range is suitable for cabin environments. The device's high-speed data transfer supports smooth video playback and responsive user interfaces. The 96-ball FBGA package withstands vibration and thermal cycling typical in automotive applications. While not AEC-Q100 qualified, it can be used in non-safety-critical infotainment systems where standard commercial components are acceptable.
Recommended
Industrial PCs
The K4B4G1646D-BCK0 is used in industrial PCs for factory automation and process control. Its 4Gb density supports multitasking and data logging, while the 1.35V operation reduces heat in sealed enclosures. The device's reliability and long lifecycle make it suitable for industrial applications where downtime is costly. The FBGA package provides good thermal dissipation, and the device's internal calibration ensures stable operation over temperature variations. It is compatible with industrial-grade motherboards that support DDR3L memory.
Recommended
Consumer Electronics
In consumer electronics like smart TVs and set-top boxes, the K4B4G1646D-BCK0 provides cost-effective memory for streaming and app execution. Its 1.35V operation reduces power consumption, contributing to energy-efficient designs. The 4Gb density is sufficient for modern consumer applications, and the x16 interface simplifies PCB routing. The device's small FBGA package enables slim product designs. The commercial temperature range covers typical home environments, and the RoHS compliance meets environmental regulations.
Recommended
Recommended Products Summary
Engineering reference data for K4B4G1646D-BCK0 — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | K4B4G1646E-BYK0 | K4B4G1646D-BMK0 | MT41K256M16HA-125 |
|---|---|---|---|---|
| Package | 96-ball FBGA | 96-ball FBGA | 96-ball FBGA | 96-ball FBGA |
| Brand | Samsung Electronics | Samsung Electronics | Samsung Electronics | Micron Technology |
| Density | 4 Gb | 4 Gb | 4 Gb | 4 Gb |
| Organization | 256M x 16 | 256M x 16 | 256M x 16 | 256M x 16 |
| Data Rate | 1600 Mbps | 1866 Mbps | 1866 Mbps | 1600 Mbps |
| Supply Voltage | 1.35V | 1.35V | 1.35V | 1.35V |
| Operating Temperature | 0°C to 95°C | 0°C to 95°C | 0°C to 95°C | 0°C to 95°C |
| RoHS | Compliant | Compliant | Compliant | Compliant |
Key Differentiators
- Lower operating voltage (1.35V) compared to standard DDR3 (1.5V) (vs MT41K256M16HA-125)
- D-die process technology (vs K4B4G1646E-BYK0)
- Wide availability and ecosystem support (vs AS4C256M16D3L-12BCN)
Design Notes
Ensure stable power supply to VDD and VDDQ pins. Use 0.1uF ceramic capacitors close to each power pin and a 10uF bulk capacitor per supply rail. The DDR3L operates at 1.35V, so verify the power supply can provide adequate current during burst operations. Follow the power-up sequence specified in the datasheet to avoid latch-up.
Maintain controlled impedance for DQ, DQS, and address/command lines. Use 50-ohm single-ended and 100-ohm differential traces. Keep trace lengths matched within 50 mils for data lines and 100 mils for address/command. Place the device close to the memory controller to minimize propagation delay. Use ground planes to reduce noise.
The K4B4G1646D-BCK0 has a maximum power dissipation of approximately 1.5W during active operation. Ensure adequate airflow or a thermal pad to keep the case temperature below 95°C. In high-density designs, consider thermal vias under the FBGA package to improve heat transfer to the PCB.
Compliance Information
RoHS compliant and halogen-free per datasheet. Not AEC-Q100 qualified.
