Rugged DRAM - Innodisk Corporation
Rugged (DRAM)

"Rugged" is a term used to refer to Innodisk’s innovation in DRAM hardware design, and in particular, how the design of DRAM is customized to specific application requirements. Rugged design customization plays a very important role in the success of applications, and it is key for solving technical issues during the design process and ensuring reliability in extreme conditions.

 

Our rugged design customization is not limited only to the redesign and relayout of DRAM modules. It also includes the use of different materials and connectors that work effectively with the printed circuit board (PCB), resulting in more durable and reliable applications.

 

 An Example of DRAM Module Customization—Rugged SODIM (RSODIMM)

 

Innodisk’s RSODIMM is a customized DRAM module for system designers who focus on aerospace, transportation, robotics, and numeric controller PC-focused applications. This customized design enables RSODIMM to be highly resistant to shock and vibration, providing more reliable performance for applications.

 

In addition, this module has successfully passed vibration tests of up to 15G per MIL-STD-202G and is already being incorporated into many specially designed machines, such as military vehicles and fighter planes. It has also passed the SGS-certified vibration and mechanical shock test. For RSODIMM vibration and mechanical shock test criteria, click here.

 

Benefits of RSODIMM:

  • Innodisk’s RSODIMM has extended the width of the existing JEDEC SODIMM standard from perpendicular to the connector by various optional dimensions. These extended dimensions come with a pair of newly added mounting holes to attach the modules to the host CPU board securely.

 

  • RSODIMM modules are fully compatible with ordinary 144-pin SODIMM modules. This compatibility eliminates the need for costly system redesign, and by leveraging familiar layout techniques, both single-board computers and memory design can be easily adapted to the new format.

 

  • Although not mandated by RSODIMM specifications, Innodisk typically rates RSODIMM products for −40ºC to 85ºC wide temperature operation, conforming coating, and so on, in recognition of the harsh environments in which systems are likely to be used.

  

Design Comparison

 Typical MO-274 design

Typical MO-274 design.

 

 Innodisk RSODIMM design

Innodisk RSODIMM design.

 

Innodisk Major RSODIMM vs Standard DRAM/SODIMM

 

Item #

Part Number

System Boot Up

Additional Test – 85ºC 24 hrs

 

 

Visual Check

Innodisk PCB

Production Criteria

Level 2 Stress Test #1-24 hrs 55ºC

Boot up

Burn-in RAM

100% Memtest Program

 

Innodisk Major RSODIMM Test Item

1

M2HK-1GHFUI06

Pass

Pass

Pass

Pass

Pass

Pass

Pass

2

M2HK-1GPFUI06

Pass

Pass

Pass

Pass

Pass

Pass

Pass

3

M2HK-2GMJUI05

Pass

Pass

Pass

Pass

Pass

Pass

Pass

 

Standard DRAM Test Item

1

M2BK-1GHFWC06

Pass

Pass

Fail

Fail

Fail

Fail

Fail

2

M2BK-1GSFWC06

Pass

Pass

Pass

Fail

Fail

Fail

Fail

3

M2BK-2GMJWWC06

Pass

Pass

Pass

Fail

Fail

Fail

Fail