M393A4G43AB3-CWE - Memory Card SAMSUNG - Free user manual and instructions

Product Type	Memory Module
Brand	Samsung
Model	M393A4G43AB3-CWE
Memory Type	DDR4
Capacity	32 GB
Speed	2666 MHz (PC4-21300)
Form Factor	Registered DIMM (RDIMM)
Pin Count	288-pin
Rank	Dual Rank
Voltage	1.2 V
Operating Temperature	0°C to 85°C
Dimensions (L x W x H)	133.35 x 31.25 x 3.8 mm
Weight	30 g (approx)
Compliance	RoHS, REACH
ESD Protection	Anti-ESD wrist strap recommended
Installation Method	Insert evenly with both hands, align notch
Handling Precautions	Avoid bending, twisting, or dropping; use gloves
Socket Compatibility	DDR4 RDIMM compatible slots
Warranty	Limited lifetime warranty (by Samsung policy)
Maintenance	Clean with dry cloth; avoid solvents

Frequently Asked Questions - M393A4G43AB3-CWE SAMSUNG

How should I handle the memory module to avoid damage?

Always handle the module by its edges only, wearing an anti-ESD wrist strap and gloves. Avoid touching the gold contacts or components. Never bend, twist, or drop the module.

What is ESD and why is it important?

ESD stands for Electrostatic Discharge, which can cause immediate or latent damage to sensitive electronic components. Using anti-ESD measures like wrist straps and conductive mats is critical during handling.

Can I touch the gold contacts on the module?

No, touching the gold contacts can cause contamination, leading to poor electrical connectivity or corrosion. Always handle the module by its edges.

What installation method should I avoid?

Avoid inserting the module by seating one end first then the other (zippering or rock). This can damage the module or socket. Instead, press down evenly on both sides simultaneously until the latches click.

How do I correctly align the module for installation?

Align the notch on the module's edge with the key in the socket. Ensure both latch ejectors are fully open. Grip the module by the edges and lower it straight into the socket, then press down evenly.

Are metal tools allowed near the module?

No, metal tools are prohibited near the module as they can scratch or damage the components. Always handle with care and avoid any hard objects.

Should I wear gloves when handling the module?

Yes, wearing clean gloves is recommended to prevent contamination from skin oils and to reduce the risk of ESD. Bare hands should never touch the module.

What should I do if I notice a crack on the module?

If you see any cracks on the PCB or components, stop use immediately. Damaged modules can cause system instability or failure. Contact Samsung support for a replacement.

How should I store memory modules when not in use?

Store modules in anti-static packaging or trays, in a cool, dry place. Keep them away from metal objects and avoid stacking heavy items on top.

Can I insert multiple modules at the same time?

No, do not insert several modules simultaneously. Insert them one by one to ensure proper seating and avoid damage to the modules or motherboard.

USER MANUAL M393A4G43AB3-CWE SAMSUNG

Illustration of various Samsung and DDR4 memory chips with labeled components (no text or symbols on the chip surfaces)

Module Handling Guide

How to handle the module

Recently module failure related with Active/Passive/Component crack has increased.

Main root causes are wrong handling method and mechanical damage.

Current products have more cap. & resistors and the sizes of those passives are reduced and most of them are located around edge area.

These characteristics require more cautious module handling method.

This guide book tries to find out tendency and range of module crack pattern based on experiments from several aspects. The main purpose is to reinforce Samsung's process control and help customer effectively control module handling process.

Test methods are PCB Bow, Twist, Drop Test, UTM(Universal Testing Machine) Test for DRAM, Resister & Capacitor. We observed crack phenomena and tendency through the datum and pictures. Tested products are limited to Registered DIMM [RDIMM], Unbuffered DIMM [UDIMM] and BOC PKG based Module, therefore test results might be different when applied to other products.

Memory Module Introduction

Green printed circuit board with multiple black integrated circuits (no visible text or symbols)

Unbuffered DIMM

Green integrated circuit chip with multiple 12-pin memory chips and a central RCD (no visible text or symbols)

Load Reduced DIMM

Registered DIMM

Green printed circuit board with multiple black and white memory chips (no visible text or symbols)

SODIMM

Person in white protective suit with blue wristband and blue cord, no visible text or symbols

Close-up of gloved hands handling a black plastic tray with greenish contents, no visible text or symbols

Person in white lab coat and gloves holding a memory chip (no visible text or symbols)

Close-up of a gloved hand holding a transparent plastic tray with internal channels, placed on a green surface (no visible text or symbols)

• Anti-ESD * straps should be used.
  • The strap should be linked to your body.

*ESD : Electro Static Discharge

• Modules should be picked up from packing trays only one-by-one.
  • Product should be handled at the conductive mat.

• Do not grab packages. Hold only the edge of the PCB with both hands.

• Wear gloves when handling.

- Tray must be covered when handling module tray.

Person in cleanroom suit holding a green circuit board with a red diagonal line (no text or symbols visible)

Person in white gloves and gloves handling multiple RAM chips on a carpet, with a red diagonal line overlay (no text or symbols)

Hand in white glove holding a series of microcontroller chips against a green background (no text or symbols visible)

Close-up of a hand holding a small electronic component against a green background, with a red diagonal line overlay (no text or symbols visible)

- Do not twist or bow a module.

- Do not drop modules on the floor.

- Do not grip several modules using one hand.

- Do not touch module without gloves. It can cause tab contamination.

Close-up of gloved hands using a tool on a green surface, with a red diagonal line overlay (no text or symbols)

Close-up of gloved hands holding a microchip with a red diagonal line against a green background (no text or symbols visible)

Close-up of a computer motherboard with a red diagonal line overlay, showing a stack of RAM chips and connected cables (no visible text or symbols)

Close-up of a computer RAM module with a green memory card placed on top, connected to a blue CPU socket and a red diagonal line (no text or symbols visible)

- Do not detach H/S * or clip. (FDHS product) *H/S : Heat Spreader

- Handling modules near tools is prohibited because hard metal objects can damage Module.

- Do not insert the module by seating one end first then seating the other. (This is called zippering or rock)

- Do not insert module upper side.

Close-up of electronic circuit boards with a red diagonal line overlay (no readable text or symbols)

Close-up of a green RAM module being processed with blue ribbeds, no visible text or symbols

Close-up of gloved hands adjusting a red diagonal line on a computer motherboard (no visible text or symbols)

Close-up of a computer motherboard with a red diagonal line indicating a performance gap (no text or symbols visible)

- Do not insert module between sockets.

- Do not insert key notch reverse.

- Do not insert several modules at the same time. (or simultaneously)

- Do not use metal tools when the socketing.

Close-up of a computer motherboard with CPU socket and drive bays (no visible text or symbols)

Close-up of a computer motherboard with blue and white CPU slots, marked by yellow circles and red prohibition signs (no readable text or symbols)

Close-up of gloved hands installing a memory card into a rack (no visible text or symbols)

Close-up of hands assembling a memory module with blue and black components (no visible text or symbols)

1. Socketing must be conducted before turn-on.

2. Ensure that both latch ejectors of connector are fully opened.

3. Grip the module edge side with both hands. (avoid touching component area)

4. Align module to socket notch & side guide.

Close-up of gloved hands assembling a memory chip into a motherboard (no visible text or symbols)

Close-up of a computer motherboard with visible slots, chips, and connectors (no readable text or symbols)

1. Press down both edge side of module at the same time.

2. Confirm latch ejectors closed properly.

We validated the possibility of cracking tendencies through various tests. Various products, Environments, and characteristics of tools can cause errors and affect test results.

However, the most important conclusion that can be deduced from the tests is that special caution against mechanical damage and handling errors should be taken from the point of unpacking modules to inserting into the sockets on system boards.

Recent memory module products are structurally weak to external damage due to the increasing numbers of ICs and passive components and the unit's diminishing size.

It's difficult to predict and find out clear root causes of failures related with BOC PKG passive components due to many variances and circumstances. However, the above guidelines for memory module handling based on test results should help with crack-related problems and make more effective process control possible.

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