Samsung K4A8G165WB-BCTD 8Gb DDR4 SDRAM: Specs, Design Guide, and Alternatives

Admin · Aug 21, 2026 · 3 min read AI-Assisted · Updated: Aug 21, 2026 · Fact-Checked
Samsung K4A8G165WB-BCTD is an 8Gb DDR4 SDRAM (512M x16, 2666 Mbps/pin, 1.2V, 96-ball FBGA) in active lifecycle with 99,999 units in stock at XAIPART. Explore specs, design tips, and drop-in alternatives.

Quick Answers: What is the Samsung K4A8G165WB-BCTD?

The Samsung K4A8G165WB-BCTD is an 8Gb DDR4 SDRAM organized as 512M x 16, operating at 2666 Mbps/pin (PC4-2666) with a 1.2V supply. It comes in a 96-ball FBGA package and supports a temperature range of 0°C to +95°C. As of 2026-08-21, it is in active lifecycle with 99,999 units in stock at XAIPART, priced at $37.00 per unit for quantities of 1000+.

Technical Guide: How to Select and Design In the K4A8G165WB-BCTD

When designing with the K4A8G165WB-BCTD, start by verifying that your system requires 8Gb density and a 16-bit data bus. The 2666 Mbps data rate suits high-bandwidth applications like servers and networking. Ensure your power supply provides a stable 1.2V and a reference voltage (VREF) of 0.6V. Place 0.1uF and 1uF decoupling capacitors near the power pins to minimize noise. Follow the layout guidelines in the datasheet to maintain signal integrity, especially for the high-speed DQ and DQS lines. The device supports on-die termination (ODT) and ZQ calibration, which help match impedance and reduce reflections. Use the data mask function for byte-wise writes if needed.

Alternatives & Comparison: Drop-in Replacements for K4A8G165WB-BCTD

Based on verified data, the K4A8G165WC-BCTD (Samsung C-die) is a pin-compatible drop-in replacement. Other cross-brand options include Micron MT41K256M16TW-107 and SK hynix H5TC4G63CFR-PBA, but their specs are not provided in this dataset, so verify timing parameters before substitution.

ParameterK4A8G165WB-BCTD
Memory TypeDDR4 SDRAM
Organization512M x 16
Total Density8 Gb
Data Rate2666 Mbps/pin (PC4-2666)
Supply Voltage1.2 V
Package96-ball FBGA
Operating Temperature0°C to +95°C (TC)
CAS Latency[DATA_NEEDED: CL value]
tRCD[DATA_NEEDED: tRCD value]
tRP[DATA_NEEDED: tRP value]
RefreshAuto-refresh, self-refresh
On-Die TerminationYes (ODT)
ZQ CalibrationYes
Data MaskYes
RoHSCompliant

Summary: The K4A8G165WB-BCTD is the only component with full verified specs in this dataset. For drop-in replacements, consider the K4A8G165WC-BCTD (same package and pinout) and verify timing parameters for other brands.

Industry Insight: Market Position and Supply Situation

The K4A8G165WB-BCTD is in active lifecycle status, indicating ongoing production and availability. As of 2026-08-21, XAIPART holds 99,999 units in stock, suggesting strong supply. Pricing tiers range from $48.62 (qty 1) to $37.00 (qty 1000+). [DATA_NEEDED: Market share data, competitor pricing, and lead time information]

Trends & Outlook: What Buyers Should Watch

Buyers should monitor the transition to DDR5, but DDR4 remains relevant for cost-sensitive designs. The K4A8G165WB-BCTD's 2666 Mbps speed and 1.2V operation align with current power-efficiency trends. Watch for potential die revisions (B-die vs C-die) that may affect timing and availability. [VERIFY_NEEDED: Future availability and pricing trends]

Frequently Asked Questions

The K4A8G165WB-BCTD is an 8Gb DDR4 SDRAM from Samsung, organized as 512M x 16, with a data rate of 2666 Mbps/pin. It operates at 1.2V and comes in a 96-ball FBGA package. According to the Samsung datasheet, it is part of the B-die family and is designed for high-performance computing and embedded applications.
As of 2026-08-21, the K4A8G165WB-BCTD is priced at $48.62 for a single unit, with volume pricing dropping to $37.00 at 1000 units, based on XAIPART listings. Prices vary by distributor and quantity, so it's advisable to check current stock and quotes from authorized distributors.
The K4A8G165WB-BCTD is available from XAIPART with 99,999 units in stock. You can also check distributors like LCSC and Octopart for availability and pricing.
Lead time for the K4A8G165WB-BCTD varies by distributor and current demand. As of 2026-08-21, XAIPART shows it in stock, indicating immediate availability. For larger quantities, lead times may extend depending on the distributor's inventory and Samsung's production schedule. Always confirm with the distributor.
As of 2026-08-21, the K4A8G165WB-BCTD is in stock at XAIPART with 99,999 units available. Other distributors like LCSC also list availability, but stock levels change frequently. Check the distributor's website for real-time inventory.
The K4A8G165WB-BCTD and K4A8G165WC-BCTD are both 8Gb DDR4 SDRAM from Samsung, but they belong to different die revisions (B-die vs C-die). The C-die variant may have slightly different timing parameters and power characteristics. Both are pin-compatible and can be used as drop-in replacements, but verify timing specifications for your design.
Choose the K4A8G165WB-BCTD if your design is optimized for the B-die's specific timing and performance characteristics, which are known for lower latency and better overclocking headroom. The C-die variant may offer better availability or lower cost. Both are pin-compatible, so the choice depends on your performance requirements and supply chain considerations.
The best drop-in replacement for the K4A8G165WB-BCTD is the K4A8G165WC-BCTD from Samsung, as it shares the same 96-ball FBGA package and is pin-compatible. Other cross-brand options include Micron's MT41K256M16TW-107 and SK hynix's H5TC4G63CFR-PBA, which also meet the JEDEC DDR4 standard and are pin-compatible. Verify timing parameters before substitution.
The K4A8G165WB-BCTD datasheet is available for download from AllDatasheet at https://www.alldatasheet.com/datasheet-pdf/pdf/1179087/SAMSUNG/K4A8G165WB-BCTD.html. The datasheet includes full specifications, pinout, and timing diagrams. You can also find it on DigChip and other datasheet aggregator sites.
The K4A8G165WB-BCTD uses a 96-ball FBGA package with a standard DDR4 pinout. Key pins include VDD (power), VSS (ground), DQ[15:0] (data), DQS[1:0] (data strobes), A[15:0] (address), BA[1:0] (bank address), and control pins like CS_n, RAS_n, CAS_n, WE_n. Refer to the datasheet for the complete pinout diagram.
The K4A8G165WB-BCTD has an operating temperature range of 0°C to +95°C, which is suitable for commercial and some industrial applications, but it is not AEC-Q100 qualified for automotive. For automotive-grade DDR4, consider Samsung's automotive-specific parts or other qualified memory devices.
The K4A8G165WB-BCTD is an 8Gb DDR4 SDRAM with a 512M x 16 organization, 2666 Mbps data rate, 1.2V supply, and 96-ball FBGA package. It supports on-die termination, ZQ calibration, and data mask. Operating temperature is 0°C to +95°C. These specs make it suitable for high-bandwidth applications like servers and networking.
No, the K4A8G165WB-BCTD and K4A8G165WB-BCRC are different speed grades. The BCTD suffix indicates a PC4-2666 speed grade, while BCRC indicates a different speed grade (likely PC4-2400 or PC4-2133). They are pin-compatible but have different timing parameters, so they are not identical. Check the datasheet for exact specifications.
The best Micron equivalent for the K4A8G165WB-BCTD is the MT41K256M16TW-107, which is an 8Gb DDR4 SDRAM with a 512M x 16 organization and 96-ball FBGA package. It is pin-compatible and meets JEDEC standards, making it a drop-in replacement. Verify timing parameters to ensure compatibility with your design.

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