K4B4G1646E DDR3L SDRAM: Specifications & Replacement Guide

K4B4G1646E DDR3L SDRAM: Specifications and Replacement Guide

The Samsung K4B4G1646E is a 4Gb DDR3L SDRAM device organized as 256M ×16 and packaged in a 96-ball FBGA configuration.

Samsung's datasheet lists DDR3L-1600 and DDR3L-1866 ordering options for the 256M ×16 configuration, with commercial-temperature and industrial-temperature variants identified by different ordering-code suffixes.

For engineers and purchasing teams searching for K4B4G1646E specifications, datasheets, or replacement options, the complete ordering code is important because the suffix determines the temperature classification and speed grade.

K4B4G1646E Specifications

The main specifications of the K4B4G1646E family include:

Understanding K4B4G1646E Part Number Variations

This is an important part of the K4B4G1646E search landscape.

Google autocomplete results for K4B4G1646E show searches for multiple ordering-code variations, including:

• K4B4G1646E-BYMA

• K4B4G1646E-BCMA

• K4B4G1646E-BCNB

• K4B4G1646E-BMMA

• K4B4G1646E-BYK0

• K4B4G1646E datasheet

• K4B4G1646E-BM K0

For technical qualification, however, the complete ordering code should always be verified against the manufacturer's documentation.

Samsung's official K4B4G1646E datasheet lists the following 256M ×16 ordering options: BYK0, BYMA, BMK0 and BMMA.

K4B4G1646E Ordering Code Guide

Part Number Speed Grade Temperature Classification

K4B4G1646E-BYK0 DDR3L-1600 Commercial

K4B4G1646E-BYMA DDR3L-1866 Commercial

K4B4G1646E-BMK0 DDR3L-1600 Industrial

K4B4G1646E-BMMA DDR3L-1866 Industrial

Samsung's datasheet states that Y indicates commercial temperature/normal power and M indicates industrial temperature/normal power.

The industrial variants are specified for -40°C to +95°C, while Samsung lists the product status as EOL on its product pages.

K4B4G1646E Industrial Temperature Variants

For industrial applications, the relevant K4B4G1646E ordering codes are the M-suffix variants:

• K4B4G1646E-BMK0

• K4B4G1646E-BMMA

These versions are identified by Samsung as industrial-temperature variants and are specified for -40°C to +95°C.

This distinction matters when selecting a replacement for an industrial system.

A commercial-temperature variant should not automatically be treated as an industrial-temperature equivalent simply because it shares the same base part number.

K4B4G1646E Replacement Considerations

When replacing a K4B4G1646E device, matching the 4Gb density alone is not sufficient.

Engineers should compare:

• DDR3L interface

• 4Gb density

• 256M ×16 organization

• 96-ball FBGA package

• Supply voltage

• Speed grade

• Timing parameters

• Temperature range

• Ball assignment

• Mechanical dimensions

• Memory-controller compatibility

This is particularly important for industrial systems where the replacement device may need to operate continuously across a wider temperature range.

K4B4G1646E vs. NexDie PRB4G1646D

NexDie's PRB4G1646D is a 4Gb DDR3L device organized as 256M ×16 and supplied in a 96-ball FBGA package. Your product documentation specifies operation from -40°C to +105°C.

Samsung's official specifications confirm the K4B4G1646E industrial variants as 4Gb, 256M ×16, 1.35V, 96 FBGA and -40°C to +95°C.

NexDie's PRB4G1646D datasheet specifies DDR3L-1333, DDR3L-1600 and DDR3L-1866 options, 1.35V operation and a 96-ball FBGA package

Is PRB4G1646D a Pin-to-Pin Replacement?

PRB4G1646D is designed as a pin-to-pin compatible replacement option for equivalent 4Gb 256M ×16 DDR3L devices, including the Samsung K4B4G1646E-BYK0 reference listed in NexDie's cross-reference guide. System-level validation is recommended before final qualification.

Wide-Temperature Advantage

The K4B4G1646E industrial variants are specified for -40°C to +95°C.

NexDie PRB4G1646D is specified for -40°C to +105°C.

This makes temperature capability an important consideration for industrial applications where operating conditions may exceed the temperature range of legacy memory components.

The PRB4G1646D datasheet also includes temperature-dependent refresh requirements through +105°C, with a note that self-refresh is not supported above +95°C.

Why Industrial DDR3L Replacement Requires More Than a Part Number Match

A replacement decision should consider both electrical compatibility and application requirements.

For industrial systems, engineers should evaluate:

• Memory organization

• Package and ball assignment

• Voltage

• Speed and timing

• Operating temperature

• Memory-controller compatibility

• System-level validation

• Long-term availability

This is especially relevant when an original DDR3L device reaches EOL and the replacement must remain available for an existing industrial platform.

Related DDR3L Replacement Guides

Related Micron DDR3L Components

For another 2Gb ×16 Micron DDR3L device, see our guide to:

MT41K128M16JT-125 DDR3L Specifications

For a 4Gb ×16 Micron DDR3L device, see:

MT41K256M16TW-107 Specifications

For an 8Gb ×16 Micron DDR3L device, see:

MT41K512M16VRP-107 IT:P Specifications

FAQ

What is K4B4G1646E?

K4B4G1646E is a Samsung 4Gb DDR3L SDRAM device with a 256M ×16 organization and 96-ball FBGA package.

Is K4B4G1646E industrial grade?

Not every K4B4G1646E ordering code is industrial grade. Samsung identifies the M variants, including K4B4G1646E-BMK0 and K4B4G1646E-BMMA, as industrial-temperature versions.

What is the temperature range of K4B4G1646E?

The industrial variants are specified for -40°C to +95°C.

Is K4B4G1646E EOL?

Samsung's product pages identify K4B4G1646E industrial variants such as BMK0 and BMMA as EOL/discontinued.

What can replace K4B4G1646E?

NexDie's cross-reference guide lists PRB4G1646D as a compatible replacement reference for K4B4G1646E-BYK0. System-level validation is recommended before final qualification.

Conclusion

The Samsung K4B4G1646E is a 4Gb DDR3L SDRAM device organized as 256M ×16 and packaged in a 96-ball FBGA configuration.

For replacement evaluation, engineers should verify the complete ordering code, because K4B4G1646E variants differ in speed grade and temperature classification.

For industrial applications, the K4B4G1646E-BMK0 and K4B4G1646E-BMMA variants are particularly relevant because they are identified as industrial-temperature versions.

NexDie PRB4G1646D provides the same 4Gb / 256M ×16 / DDR3L architecture and 96-ball FBGA package, with a specified operating range of -40°C to +105°C.