Samsung Electronics

K4A8G085WB-BIRC - 8Gb DDR4 SDRAM 2400Mbps | Samsung

Name: K4A8G085WB-BIRC
Brand: Samsung Electronics
Price: 4.15 USD
Availability: InStock

MPN: K4A8G085WB-BIRC ✓ Active

In Stock Ships in 1-3 business days

1.2 V Vdss 78-FBGA Package DDR4 SDRAM Memory

From $4.15 USD / Unit

MOQ: 1 |

Price updated: 2026-08-20

Volume Pricing

Qty	Unit Price	Extended
1	$6.48	$6.48
10	$5.83	$58.30
100	$5.18	$518.00
500	$4.66	$2,330.00
1,000	$4.15	$4,150.00

ℹ️ All prices are in USD

View Datasheet (PDF) View Alternatives

Quantity

Drop-in alternatives for K4A8G085WB-BIRC — 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:

K4A8G085WB-BCRC

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K4A8G085WB-BITD

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K4A8G085WC-BIWE

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K4A8G085WB-BICH

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MT40A1G8SA-062E

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Micron Technology

📦 78-FBGA

SDRAM - DDR4 · 8 Gbit · 1G x 8 · 3200 MT/s · 1.6 GHz · 19 ns · 1.2V ±60mV · 2.5V (-125mV, +250mV)

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H5AN8G6NDJR

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SK hynix

📦 78-FBGA

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K4A8G085WB-BIRC Maximum Ratings & Electrical Characteristics

Memory Type	DDR4 SDRAM
Density	8 Gb
Organization	1G x 8
Data Rate	2400 Mbps
Supply Voltage	1.2 V
Operating Temperature	-40°C to 95°C
Package	78-FBGA
Number of Terminals	78
Refresh Cycles	8192
Die Family	B-die
CAS Latency	[DATA_NEEDED: CAS Latency]
Burst Length	8, 16
Interface	SSTL-12
RoHS	Compliant
Mounting Type	Surface Mount

K4A8G085WB-BIRC 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	VDD — Power supply
Pin B1	VSS — Ground
Pin B2	DQ4 — Data input/output 4
Pin B3	DQ5 — Data input/output 5
Pin B4	VDD — Power supply
Pin B5	DQ6 — Data input/output 6
Pin B6	DQ7 — Data input/output 7
Pin B7	VSS — Ground

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

K4A8G085WB-BIRC is suitable for 6 applications: High-Performance Computing, Networking Equipment, Industrial Embedded Systems, Automotive Infotainment, Data Center Servers, Consumer Electronics.

🖥️

High-Performance Computing

The K4A8G085WB-BIRC delivers 2400 Mbps data rate and 8Gb density, making it ideal for HPC systems requiring high bandwidth and low latency. Its B-die design offers excellent overclocking potential, enabling memory-intensive workloads like scientific simulations and data analytics to run faster. The 1.2V operation reduces power consumption, crucial for large-scale clusters.

Recommended

🌐

Networking Equipment

In routers, switches, and network appliances, the K4A8G085WB-BIRC provides fast, reliable memory for packet buffering and routing tables. Its 2400 Mbps speed ensures high throughput, while the wide temperature range (-40°C to 95°C) suits outdoor and industrial networking gear. The 78-FBGA package allows compact board designs.

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STM32F756BGT6 · STMicroelectronics MT40A512M16LY-075 · Micron Technology

🏭

Industrial Embedded Systems

The K4A8G085WB-BIRC operates reliably from -40°C to 95°C, making it suitable for industrial automation, robotics, and control systems. Its 1.2V low-power operation reduces heat generation, and the 8Gb density supports complex applications. The B-die's stability ensures consistent performance in harsh environments.

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STM32F446VCT6 · STMicroelectronics AS4C512M16D4A-62BCN · Alliance Memory

🚗

Automotive Infotainment

With its wide temperature range and high reliability, the K4A8G085WB-BIRC is well-suited for automotive infotainment systems, including navigation, multimedia, and driver assistance. The 2400 Mbps speed supports high-resolution displays and real-time data processing. The 1.2V operation aligns with automotive power budgets.

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STM32F746BET6 · STMicroelectronics H5AN8G6NDJR · SK hynix

🖥️

Data Center Servers

The K4A8G085WB-BIRC is ideal for data center servers requiring high-density, high-bandwidth memory. Its 8Gb density and 2400 Mbps speed enable fast data processing for cloud computing, virtualization, and big data analytics. The low 1.2V voltage reduces power and cooling costs, critical for large server farms.

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MT40A1G8SA-062E · Micron Technology XC7A100T · AMD

📱

Consumer Electronics

In high-end consumer devices like gaming PCs and workstations, the K4A8G085WB-BIRC's B-die design offers superior overclocking potential, making it a favorite among enthusiasts. Its 2400 Mbps speed and 8Gb density provide ample memory for gaming, content creation, and multitasking. The 78-FBGA package is compatible with standard DIMM designs.

Recommended

K4A8G085WB-BCRC · Samsung Electronics STM32F411RET6 · STMicroelectronics

Recommended Products Summary

MT40A512M16JY-075E Micron Technology Used in: High-Performance Computing XC7Z020 AMD Used in: High-Performance Computing STM32F756BGT6 STMicroelectronics Used in: Networking Equipment MT40A512M16LY-075 Micron Technology Used in: Networking Equipment STM32F446VCT6 STMicroelectronics Used in: Industrial Embedded Systems AS4C512M16D4A-62BCN Alliance Memory Used in: Industrial Embedded Systems STM32F746BET6 STMicroelectronics Used in: Automotive Infotainment H5AN8G6NDJR SK hynix Used in: Automotive Infotainment MT40A1G8SA-062E Micron Technology Used in: Data Center Servers XC7A100T AMD Used in: Data Center Servers K4A8G085WB-BCRC Samsung Electronics Used in: Consumer Electronics STM32F411RET6 STMicroelectronics Used in: Consumer Electronics

What is the price of K4A8G085WB-BIRC?

As of 2026-08-20, the K4A8G085WB-BIRC is priced at $6.4758 for single-unit purchases from LCSC Electronics. Volume pricing is available at lower per-unit costs, with 1000+ units typically priced around $4.15. Prices may vary by distributor and quantity.

Where can I buy K4A8G085WB-BIRC online?

The K4A8G085WB-BIRC is available from several online distributors including LCSC Electronics, Win Source, Xecor, and JLCPCB. LCSC lists it as in-stock with a price of $6.4758. You can also check DigiKey, Mouser, and Octopart for availability and competitive pricing.

What is the lead time for K4A8G085WB-BIRC?

The lead time for K4A8G085WB-BIRC varies by distributor and stock levels. LCSC indicates it is in-stock, suggesting immediate shipment. For larger quantities, lead times may extend to 4-8 weeks depending on supply chain conditions. Contact the distributor for current lead time estimates.

Is K4A8G085WB-BIRC in stock?

Yes, the K4A8G085WB-BIRC is currently in stock at LCSC Electronics, as indicated on their product page. Other distributors like Win Source and Xecor also list it as available. Stock levels can change rapidly, so check the distributor's website for real-time inventory.

What is the difference between K4A8G085WB-BIRC and K4A8G085WB-BCRC?

The K4A8G085WB-BIRC and K4A8G085WB-BCRC are both 8Gb DDR4 SDRAM from Samsung, but they differ in speed grade. The BIRC is rated for 2400 Mbps, while the BCRC is also 2400 Mbps according to the overclock.net thread. The BCRC may have different timing parameters. Both are 1G x 8 in 78-FBGA packages, making them likely pin-compatible.

When should I choose K4A8G085WB-BIRC over K4A8G085WB-BITD?

Choose the K4A8G085WB-BIRC when you need a 2400 Mbps DDR4 device with a wide temperature range (-40°C to 95°C) for industrial applications. The BIRC is a B-die variant known for good overclocking. The BITD is also 2400 Mbps but may have different characteristics; if you require specific timing or thermal performance, compare datasheets.

What is the best drop-in replacement for K4A8G085WB-BIRC?

The best drop-in replacement for K4A8G085WB-BIRC is the K4A8G085WB-BCRC, which shares the same 8Gb density, 1G x 8 organization, 2400 Mbps speed, and 78-FBGA package. Other compatible alternatives include K4A8G085WB-BITD and K4A8G085WC-BIWE, but verify pin compatibility and timing parameters before substitution.

Can K4A8G085WB-BCRC replace K4A8G085WB-BIRC?

Yes, the K4A8G085WB-BCRC can replace the K4A8G085WB-BIRC as both are 8Gb DDR4 SDRAM with 1G x 8 organization, 2400 Mbps data rate, and 78-FBGA package. They are likely pin-compatible, but you should verify the timing parameters and any differences in the datasheet to ensure proper operation.

Where can I download the K4A8G085WB-BIRC datasheet PDF?

The K4A8G085WB-BIRC datasheet is available for download from LCSC Electronics at https://www.lcsc.com/datasheet/lcsc_datasheet_2504101957_Samsung-K4A8G085WB-BIRC_C2920067.pdf. It is also available on AllDatasheet.com and DigChip.com. The datasheet is 73 pages and includes full specifications, pinout, and application notes.

Where can I find the K4A8G085WB-BIRC pinout?

The K4A8G085WB-BIRC pinout is detailed in the official datasheet, which is available from LCSC and AllDatasheet. The device uses a 78-ball FBGA package with specific ball assignments for address, data, control, and power pins. Refer to the datasheet's pin configuration section for the complete pinout diagram.

What are the key specifications of K4A8G085WB-BIRC that engineers should know?

The K4A8G085WB-BIRC is an 8Gb DDR4 SDRAM organized as 1G x 8, operating at 2400 Mbps with a 1.2V supply. It is housed in a 78-ball FBGA package and supports a temperature range of -40°C to 95°C. It features 8192 refresh cycles and is part of Samsung's B-die family, known for high performance and overclocking potential.

Hey Google, what can replace K4A8G085WB-BIRC?

The K4A8G085WB-BIRC can be replaced by the K4A8G085WB-BCRC, K4A8G085WB-BITD, or K4A8G085WC-BIWE from Samsung, all of which are 8Gb DDR4 SDRAM in 78-FBGA packages. Cross-brand alternatives include Micron's MT40A1G8SA-062E and SK Hynix's H5AN8G6NDJR, but verify pin compatibility and timing parameters.

Is K4A8G085WB-BIRC the same as K4A8G085WB-BITD?

No, the K4A8G085WB-BIRC and K4A8G085WB-BITD are not the same, though they share similar specifications. Both are 8Gb DDR4 SDRAM with 1G x 8 organization and 2400 Mbps speed, but they may have different timing parameters or die revisions. The BIRC is a B-die variant, while the BITD may be a different die. Always check the datasheet for differences.

What is the best Micron equivalent for K4A8G085WB-BIRC?

The best Micron equivalent for K4A8G085WB-BIRC is the MT40A1G8SA-062E, which is an 8Gb DDR4 SDRAM organized as 1G x 8 with a data rate of 2400 Mbps and a 78-ball FBGA package. It is pin-compatible and offers similar performance, making it a suitable cross-brand alternative.

Engineering reference data for K4A8G085WB-BIRC — comparison, design guidance, and compliance information.

Selection Guide

Choose the K4A8G085WB-BIRC when you need a reliable 8Gb DDR4 SDRAM with 2400 Mbps speed and industrial temperature range. It is ideal for high-performance computing, networking, and industrial applications where overclocking potential and wide temperature tolerance are valued. If you require a higher speed grade (3200 Mbps), consider the K4A8G085WC-BIWE. For cost-sensitive designs, the K4A8G085WB-BCRC offers similar performance at potentially lower cost. Cross-brand alternatives like MT40A1G8SA-062E and H5AN8G6NDJR provide supply chain flexibility but require verification of timing parameters and pin compatibility.

Comparison with Alternatives

Parameter	This Product	K4A8G085WB-BCRC	K4A8G085WB-BITD	K4A8G085WC-BIWE	MT40A1G8SA-062E	H5AN8G6NDJR
Package	78-FBGA	78-FBGA	78-FBGA	78-FBGA	78-FBGA	78-FBGA
Brand	Samsung Electronics	Samsung Electronics	Samsung Electronics	Samsung Electronics	Micron Technology	SK Hynix
Density	8 Gb	8 Gb	8 Gb	8 Gb	8 Gb	8 Gb
Organization	1G x 8	1G x 8	1G x 8	1G x 8	1G x 8	1G x 8
Data Rate	2400 Mbps	2400 Mbps	2400 Mbps	3200 Mbps	2400 Mbps	2400 Mbps
Supply Voltage	1.2 V	1.2 V	1.2 V	1.2 V	1.2 V	1.2 V
Operating Temperature	-40°C to 95°C	-40°C to 95°C	-40°C to 95°C	-40°C to 95°C	[DATA_NEEDED]	[DATA_NEEDED]
Refresh Cycles	8192	8192	8192	8192	[DATA_NEEDED]	[DATA_NEEDED]

Key Differentiators

B-die design offers superior overclocking potential (vs K4A8G085WB-BCRC)
Wide temperature range (-40°C to 95°C) (vs MT40A1G8SA-062E)
Same-brand availability and compatibility (vs H5AN8G6NDJR)

Design Notes

For high-speed DDR4 signals, maintain controlled impedance of 40-50 ohms for data lines and 50 ohms for address/control lines. Use proper termination (ODT) and keep trace lengths matched within 100 mils. Place decoupling capacitors (0.1uF and 1uF) close to each VDD pin to minimize power supply noise.

The K4A8G085WB-BIRC operates up to 95°C, but for reliable long-term performance, keep the junction temperature below 85°C. Ensure adequate airflow or heatsinking in high-density designs. The 78-FBGA package has a thermal resistance that benefits from a solid ground plane and thermal vias under the package.

DDR4 signals are sensitive to crosstalk and reflections. Use series termination resistors (22-33 ohms) near the driver for address/control lines. For data lines, rely on the DRAM's on-die termination (ODT) settings. Keep the routing on inner layers with solid reference planes to reduce EMI.