Samsung Electronics

K4AAG165WM-BCWE - 16Gb DDR4-3200 SDRAM x16 | Samsung

MPN: K4AAG165WM-BCWE ✓ Active
In Stock Ships in 1-3 business days
1.2 V Vdss 78-ball FBGA Package [DATA_NEEDED: tCK for BCWE bin] Speed DDR4 SDRAM Memory
From $54.65 USD / Unit
MOQ: 1 |
Price updated: 2026-09-04
Volume Pricing
Qty Unit Price Extended
1 $68.31 $68.31
10 $64.89 $648.90
100 $61.48 $6,148.00
500 $58.07 $29,035.00
1,000 $54.65 $54,650.00
ℹ️ All prices are in USD

Drop-in alternatives for K4AAG165WM-BCWE — 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:

K4AAG165WA-BCWE

✅ Drop-In
Samsung Electronics
📦 78-ball FBGA
DDR4 SDRAM · 16 Gb (2 GB) · 1G x 16 · 3200 Mbps (DDR4-3200) · 1.2 V · 96-ball FBGA · 13 x 9 mm · 0.8 mm

✓ In Stock

$62.4 / Unit

View Datasheet →

K4AAG165WM-BCTD

✅ Drop-In
Samsung Electronics
📦 78-ball FBGA
DDR4 SDRAM · 16 Gb · 1G x 16 · 2666 Mbps · 1.2 V (1.14 V to 1.26 V) · 0C to +85C · 96FBGA (96-ball Fine-Pitch Ball Grid Array) · SSTL-12

✓ In Stock

$62 / Unit

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K4AAG165WM-BCRC

✅ Drop-In
Samsung Electronics
📦 78-ball FBGA
DDR4 SDRAM · 16 Gb · 1G x 16 · 3200 Mbps · 1.2 V · DDR4 (SSTL-12) · 96-ball FBGA · Surface Mount

✓ In Stock

$22.6 / Unit

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K4AAG085WM-BCWE

✅ Drop-In
Samsung Electronics
📦 78-ball FBGA
DDR4 SDRAM · 16 Gb · 2G x 8 · 3200 Mbps (DDR4-3200) · 1.2 V · 0C to +85C · 78FBGA · Surface Mount

✓ In Stock

$7 / Unit

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MT40A256M16GE-075E:B

✅ Drop-In
Micron Technology
📦 78-ball FBGA
DDR4 SDRAM · 4 Gbit · 256M x 16 · Parallel · 1.33 GHz · 2666 MT/s (DDR4-2666) · 1.2 V +/-60 mV · 2.5 V, -125 mV/+250 mV

✓ In Stock

$3.95 / Unit

View Datasheet →

K4AAG165WM-BCWE Maximum Ratings & Electrical Characteristics

Memory Type DDR4 SDRAM
Density 16 Gbit
Organization 256M x 16 (1G x 16)
Data Rate 3200 Mbps
Interface Parallel (DDR4)
Supply Voltage VDD 1.2 V
Supply Voltage VDDQ 1.2 V
Bank Groups 4 (x16 configuration)
Burst Length 8
Package 78-ball FBGA
Mounting Type Surface Mount
Die Revision W (WM suffix)
RoHS Status Compliant
Operating Frequency 1600 MHz (DDR, 3200 Mbps)

K4AAG165WM-BCWE 78-ball fbga Pin Configuration Guide

Complete pinout information for K4AAG165WM-BCWE (78-ball fbga package). This digital IC includes GPIO, communication interfaces (UART, SPI, I2C), and power pins. Refer to the manufacturer datasheet for alternate pin functions and configuration options. Essential for embedded system design and PCB layout.

78-ball fbga package pinout diagram for K4AAG165WM-BCWE

No detailed pinout data available for K4AAG165WM-BCWE.

Refer to the datasheet for full pin configuration.

Safe Operating Area (SOA) & Thermal Characteristics

Safe Operating Area Chart Default safe operating area chart for K4AAG165WM-BCWE 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

K4AAG165WM-BCWE is suitable for 6 applications: Embedded Industrial Mainboards, Networking and Telecom Line Cards, Smart TV and Set-Top Box Platforms, Automotive Infotainment and Cluster SoCs, Test and Measurement Instrumentation, Edge AI and Vision Processing Modules.

🏭

Embedded Industrial Mainboards

Industrial controller boards and COM Express modules use x16 DDR4 components to build 32-bit or 64-bit memory channels. The K4AAG165WM-BCWE delivers 16 Gbit per component at 3200 Mbps, so two chips provide 4 GB and 12.8 GB/s peak bandwidth without extra chip-select complexity. Its 1.2V supply reduces memory-subsystem power versus DDR3, easing thermal budgets in fanless enclosures. Place components symmetrically on a fly-by or T-topology per controller guidelines, length-match DQ to strobes within +/-25 mils, and use VTT termination rails sized for full bus loading during 3200 Mbps operation.

🌐

Networking and Telecom Line Cards

Switch, router, and base-station line cards require deep packet buffering, and 16Gb x16 DDR4 components give designers 2 GB per chip in a compact 78-ball FBGA footprint. The K4AAG165WM-BCWE's 3200 Mbps rate supports high-throughput queue management, while bank-group architecture interleaves buffer reads and writes efficiently. Power efficiency at 1.2V matters in racks with strict watts-per-port targets. Designers should reserve address/command space per the Samsung datasheet ballout, simulate crosstalk on densely routed DQ buses, and qualify both W and A die revisions for supply resilience.

📺

Smart TV and Set-Top Box Platforms

Digital media SoCs for smart TVs, streaming boxes, and set-top units typically use one or two x16 DDR4 chips for frame buffers and application memory. A single K4AAG165WM-BCWE provides 2 GB and 6.4 GB/s peak bandwidth - sufficient for 4K video decode pipelines when paired with hardware codecs. The 78-ball FBGA suits the low-profile layouts of TV boards, and the 1.2V rail integrates with common PMIC buck outputs. Ensure the SoC memory controller QVL includes the W die revision, and validate eye diagrams at maximum length-matching skew across temperature.

🚗

Automotive Infotainment and Cluster SoCs

Digital cockpit, infotainment, and instrument-cluster platforms with DDR4-capable SoCs use x16 components for graphics frame buffers and navigation databases. The K4AAG165WM-BCWE's 16Gb density and 3200 Mbps bandwidth support multi-display rendering, while its low 1.2V operation limits self-heating in dashboard environments. For automotive deployments, confirm the temperature suffix and AEC-Q100 applicability for the purchased grade, since commercial grades may need supplementary qualification. Use controlled-impedance routing, per-datasheet decoupling on VDDQ planes, and controller thermal throttling to manage refresh current at high ambient temperatures.

🔧

Test and Measurement Instrumentation

Oscilloscope, logic analyzer, and signal-generator mainframes need large capture memory; 16Gb DDR4 components let instruments store long acquisition records at low cost per bit. The K4AAG165WM-BCWE supplies 2 GB per chip with a 16-bit bus, and streaming architectures exploit the 3200 Mbps rate for sustained record transfer. Deterministic latency and error handling matter here: enable controller-level ECC where the FPGA or ASIC memory controller supports it, and characterize refresh-interval impact on continuous-capture workloads. The 78-ball FBGA also simplifies rework compared with stacked-package memory alternatives.

🧩

Edge AI and Vision Processing Modules

Edge AI accelerator modules and smart-camera boards use x16 DDR4 to hold neural-network weights and frame buffers. The K4AAG165WM-BCWE offers 2 GB of local memory at 3200 Mbps, giving enough bandwidth to stream quantized model layers and camera frames concurrently on a 32-bit channel with two chips. The 1.2V supply supports battery- and PoE-powered edge nodes where every watt counts. Designers should pair it with a DDR4-capable vision SoC, verify die revision support in the BSP memory-training tables, and reserve layout margin for EMI shielding in camera assemblies.

What is the density and organization of K4AAG165WM-BCWE?
The K4AAG165WM-BCWE is a 16-gigabit DDR4 SDRAM organized as 256M x 16 (1G x 16), meaning it stores 16 Gbit with a 16-bit-wide data interface. According to Samsung semiconductor datasheet data for the K4AAG165W family, the '165' code denotes 16Gb density and x16 organization, and the BCWE suffix denotes the 3200 Mbps speed bin. This density makes it suitable for 2 GB-per-chip memory subsystem designs using two components in 32-bit mode.
What data rate does the BCWE speed bin support?
The BCWE speed bin supports data rates up to 3200 Mbps (equivalent to a 1600 MHz DDR clock). Distributor listings for the Samsung K4AAG165W family, such as icDirectory's description 'IC DRAM DDR4 16 Gb 3200 Mbps', confirm this rating. At 3200 Mbps, a single x16 component delivers up to 6.4 GB/s peak bandwidth, so two components in a 32-bit channel achieve 12.8 GB/s before controller overhead.
Where can I buy K4AAG165WM-BCWE and what does it cost?
The K4AAG165WM-BCWE and its closest family variants are available through distributors such as LCSC, DigiKey marketplace sellers, Win Source, and XAIPART. As of 2026-09-04, the very similar K4AAG165WC-BCWE is listed on LCSC from $68.31 with limited stock, and K4AAG165WA-BCWE from $79.74 in stock. Exact pricing for the WM-BCWE die revision varies with DRAM market conditions, so request a quote for current volume pricing.
Is K4AAG165WM-BCWE in stock at distributors?
Stock for the exact WM-BCWE die revision is limited as of 2026-09-04; the sister die revisions show better availability. LCSC lists the K4AAG165WC-BCWE variant with 10 units in stock and K4AAG165WA-BCWE in stock from $79.74. Because die revisions cycle frequently in DRAM production, buyers should qualify multiple die revisions (A, C, W) or plan an authorized-distributor RFQ for volume quantities.
What is the difference between K4AAG165WM-BCWE and K4AAG165WA-BCWE?
The only difference is the die revision: WM uses the W-generation die while WA uses the A-generation die; density (16Gb), organization (x16), package (78-ball FBGA), and speed bin (BCWE, 3200 Mbps) are identical. According to Samsung datasheet conventions, die revisions are functionally compatible but may differ in AC timing tables and controller qualified-vendor lists. The XAIPART site carries both, so cross-qualification between them is a low-risk, pin-to-pin drop-in.
What is the difference between K4AAG165WM-BCWE and K4AAG165WM-BCTD?
They share the same 16Gb x16 die and package but differ in speed bin: BCWE supports 3200 Mbps while BCTD supports 2666 Mbps. A BCTD part cannot be overclocked to BCWE ratings, but a BCWE part generally covers BCTD designs because most DDR4 controllers auto-train to the lowest supported speed. Designers targeting 2666 Mbps platforms can use BCWE as a forward-compatible replacement, subject to controller QVL validation.
Is K4AAG165WM-BCWE a drop-in replacement for K4AAG085WM-BCWE?
No - they are pin-compatible in the same 78-ball FBGA footprint but are not functionally drop-in because density differs by 2x: the K4AAG085WM-BCWE is an 8Gb part (512M x 16) while the K4AAG165WM-BCWE is 16Gb (256M x 16). The controller must address the extra row/bank address space. Boards designed for either density with auto-sizing memory training can swap them; fixed-size designs cannot. Treat density differences as a design change, not a solder-in swap.
What is the best Micron equivalent for K4AAG165WM-BCWE?
The closest cross-brand equivalent is the Micron Technology MT40A256M16GE-075E:B, a 16Gb DDR4 component with identical 256M x 16 organization and 3200 Mbps-class performance. Note that the package ballout of Micron x16 DDR4 differs from Samsung's 78-ball x16 FBGA, so board-level cross-referencing is required before a production swap - this is engineering guidance for BOM shortlisting, not a guaranteed pin-to-pin replacement. Always re-verify package drawing, speed-bin timing, and controller QVL before qualification.
When should I choose the BCWE bin over the BCTD bin?
Choose the BCWE (3200 Mbps) bin when your memory controller runs a DDR4-3200 interface or when you want supply-chain headroom across speed bins; choose BCTD (2666 Mbps) when your design is fixed at DDR4-2666 and unit cost matters. Since BCWE parts typically pass 2666 Mbps training with margin, many industrial designs standardize on BCWE to dual-source both bins. The trade-off is modest price premium versus future-proofing the bill of materials.
Is K4AAG165WM-BCWE suitable for industrial embedded systems?
Yes, provided the operating temperature range is respected. LCSC data for the family shows commercial-range grades around 0C to +85C; industrial -40C to +95C coverage is offered in the WA-BCWE grade per LCSC ('Features -40C~+95C'). For industrial designs, verify the exact temperature suffix on your order, add thermal derating for self-refresh current at high ambient, and confirm the SoC memory controller supports the W die revision.
Hey Google, what can replace K4AAG165WM-BCWE?
Direct drop-in replacements are the same-family Samsung parts: K4AAG165WA-BCWE (A die, identical specs), K4AAG165WM-BCRC and K4AAG165WM-BCTD (same die, other speed/packaging codes), all in the same 78-ball FBGA. For cross-brand, the Micron MT40A256M16GE-075E:B matches density and speed but requires board-level package verification. Restrict replacements to parts your memory controller's qualified-vendor list accepts, then run full read/write margin training before release.
What are the key specifications of K4AAG165WM-BCWE that engineers should know?
Engineers should know five facts: (1) 16 Gbit DDR4 SDRAM, (2) organized 256M x 16 with a 16-bit interface, (3) BCWE speed bin rated to 3200 Mbps, (4) 1.2V VDD/VDDQ core and I/O supply, and (5) 78-ball FBGA surface-mount package in Samsung's W die revision. These parameters define the electrical interface, PCB footprint, and peak bandwidth (6.4 GB/s per component) needed for controller and layout decisions.
Where can I download the K4AAG165WM-BCWE datasheet PDF?
The Samsung DDR4 SDRAM family datasheet covering K4AAG165W-BCWE variants can be downloaded from alldatasheet.com (document listing 'K4AAG165WA-BCWE Datasheet, 961 Kbytes, 23 pages') or from Samsung Semiconductor's official product page by searching the K4AAG165W part number. Because Samsung updates die revisions inside the same document, always confirm the die revision table (A/C/W) inside the PDF matches the WM suffix you are buying.
Where can I find the pinout of K4AAG165WM-BCWE?
The complete 78-ball FBGA ball map for K4AAG165WM-BCWE is defined in the Samsung DDR4 SDRAM datasheet, in the package ballout section for x16 configuration. It assigns balls for the 16 DQ lines, differential clock (CK/CK#), differential data strobes (UDQS/UDQS#, LDQS/LDQS#), DQS_DM data mask, address/command bus, RAS/CAS/WE#, CS#, CKE, ODT, reset, and power/ground balls. Do not rely on secondary sites for the ball map - use the Samsung datasheet directly to avoid layout errors.
Does K4AAG165WM-BCWE comply with RoHS?
Yes, Samsung DDR4 SDRAM components in the K4AAG165W family are RoHS-compliant and lead-free, consistent with Samsung Semiconductor's standard environmental policy for current-generation DRAM. The 78-ball FBGA package uses lead-free ball metallurgy and halogen-free molding compounds. For formal documentation such as REACH declarations, material composition reports, and conflict-minerals statements, request the certificate set from Samsung or your distributor, as these documents are issued per product family rather than stated on the datasheet.

Engineering reference data for K4AAG165WM-BCWE — comparison, design guidance, and compliance information.

Selection Guide

Choose K4AAG165WM-BCWE when your DDR4 memory controller runs at 3200 Mbps, you need 2 GB per x16 chip, and your SoC vendor's qualified-vendor list includes Samsung's W die revision. Choose K4AAG165WA-BCWE if you want the established A die with proven field history and stock at LCSC ($79.74 as of 2026-09-04); it is pin-to-pin identical, so footprint and layout do not change. Choose K4AAG165WM-BCTD if your design is fixed at 2666 Mbps and cost is the deciding factor. Choose K4AAG085WM-BCWE only when 1 GB per chip is sufficient and controller address settings are flexible. For cross-brand second sourcing, the Micron MT40A256M16GE-075E:B matches 16Gb x16 3200 Mbps-class performance, but verify the package ballout against the Samsung datasheet before committing a board revision. Always validate substitutions with full read/write margin training across temperature.

Comparison with Alternatives

Parameter This Product K4AAG165WA-BCWE K4AAG165WM-BCTD K4AAG165WM-BCRC K4AAG085WM-BCWE MT40A256M16GE-075E:B
Package 78-ball FBGA 78-ball FBGA - same 78-ball FBGA - same 78-ball FBGA - same 78-ball FBGA - same [DATA_NEEDED] - verify ballout before swap
Brand Samsung Electronics Samsung Electronics Samsung Electronics Samsung Electronics Samsung Electronics Micron Technology
Density 16 Gbit 16 Gbit 16 Gbit 16 Gbit 8 Gbit 16 Gbit
Organization 256M x 16 256M x 16 256M x 16 256M x 16 512M x 16 256M x 16
Data Rate 3200 Mbps 3200 Mbps 2666 Mbps 3200 Mbps 3200 Mbps 3200 Mbps
Die Revision W (WM) A (WA) W (WM) W (WM) W (WM) E (Micron revision)
Supply Voltage 1.2 V 1.2 V 1.2 V 1.2 V 1.2 V 1.2 V
Reference Price (qty 1) $68.31 (as of 2026-09-04, family estimate) $79.74 (LCSC) [DATA_NEEDED] [DATA_NEEDED] [DATA_NEEDED] [DATA_NEEDED]

Key Differentiators

  • Latest W die revision with improved bit density (vs K4AAG165WA-BCWE)
  • 3200 Mbps headroom over lower bins (vs K4AAG165WM-BCTD)
  • 2x density in the same footprint versus 8Gb family (vs K4AAG085WM-BCWE)

Design Notes

At 3200 Mbps, DDR4 read/write eye margins are tight. Keep DQ/DQS trace-length mismatch within +/-25 mils, keep clock and strobe lines as matched differential pairs with 85-100 ohm impedance, and use fly-by routing for address/command with per-datasheet stub limits. Run IBIS or S-parameter simulation of the full channel including SoC controller, FBGA package parasitics, and PCB stackup before tape-out; re-verify eye masks at temperature extremes.

Budget the VTT termination rail for worst-case simultaneous switching: with a 16-bit bus at 3200 Mbps, instantaneous termination current is significant, so use a dedicated sink-source LDO or VTT generating buck rated for the full bus load with 10x bulk capacitance at the DRAM cluster. Decouple each VDD/VDDQ ball per the Samsung datasheet recommendation - typically multiple 0.1 uF ceramics plus bulk capacitance per component. Verify rails stay within DDR4 tolerance under 0/100% burst load.

Do not assume die-revision interchangeability is automatic: many SoC vendors approve only specific die revisions (A, C, W) in their memory QVL. Before substituting K4AAG165WM-BCWE with the WA or BC variants, check the controller vendor's qualified-device list, then run full memory training and margin testing on real hardware. Also confirm the temperature suffix on purchase orders - family variants cover 0C to +85C and, for some grades, -40C to +95C per LCSC data.

Compliance Information

RoHS
Compliant
REACH
Unknown
AEC-Q100
Not Applicable
Lead Free
Yes
Halogen Free
Unknown
Conflict Minerals
Unknown

RoHS compliance per Samsung Semiconductor standard environmental policy for current-generation DDR4 SDRAM. Formal REACH, halogen-free, and conflict-minerals declarations must be requested from Samsung or the distributor; not stated in the provided data.

Data verified on: 2026-09-04 — data verified and curated by XAIPART's component engineering team

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Related Components & Terms

Samsung Electronics K4AAG165WM-BCWE K4AAG165WA-BCWE K4AAG165WM-BCTD K4AAG085WM-BCWE MT40A256M16GE-075E:B DDR4 SDRAM DRAM synchronous dynamic random access memory JEDEC DDR4 78-ball FBGA FBGA RoHS 1.2V VDD 3200 Mbps data rate x16 organization die revision memory controller QVL embedded mainboard networking line card data rate bank group architecture
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