FEATURES AND SPECIFICATIONS

SPECIIFICATIONS

1.00mm (.039") Pitch

Fully Buffered DIMM Socket

240 Circuit

With Color Options

48206

Vertical, Through Hole

Molex offers the Fully Buffered DIMM with color options for server applications.

The development of Fully Buffered DIMM (FB DIMM) came from the need for larger

and faster memory capacity where memory coordination and accuracy at high speeds

are critical which DDR2 is not capable of supporting.

The FB DIMM is a variant of the DDR2. It combines the high-speed internal

architecture of DDR2 with a bi-directional point-to-point serial memory interface

which links each FB DIMM module together in a chain. The difference is here in which

the DDR2 uses a single memory bus.

Molex is an active member of the JEDEC work group that defines industry standards

for memory. This allows Molex to ensure that all our memory sockets are 100%

industry compatible.

Features

Benefits

• High-temperature thermoplastic housing

• Lead-free process compatible

• Accepts JEDEC defined module MO-256

• Complies with JEDEC SO-003 socket specifications

• Ensures 100% industry compatibility

• Dual ejector latches

• Ensures easy module insertion and removal with minimal micro

motion

• Built in end key design

• Ensures correct insertion of FB memory module

• Latch tower support

• Aids in keeping the module vertical

• Beveled metal pins (forklocks)

• Provides proper socket to PCB alignment and retention, during and

after soldering

Reference Information

Packaging: Tray

UL File No.: TBD

CSA File No.:TBD

Mates With: JEDEC MO-256 memory modules

Complies with: JEDEC SO-003 Socket Outline

Designed In: Millimeters

Electrical

Voltage: 30V

Current: 0.5A

Contact Resistance: 20 milliohms max

Dielectric Withstanding Voltage: 500V AC

Insulation Resistance: 1000 Megohms min

Mechanical

Contact retention to housing: 3N min (Contact)

13N min (Forklock)

Insertion Force to PCB: 0.56N (0.13lb)

Mating Force: 0.81N (0.18lb)

Unmating Force: 0.02N (0.01lb)

Latch Actuation Force: 45N max per latch

Durability: 10 Cycles

Physical

Housing: See order table

Flammability rating: UL 94V-0

Contact: Copper (Cu) Alloy

PCB thickness: 1.60mm (.062”)

Plating:

Contact Area — See order table

Solder Tail Area —Tin (Sn), Lead-free

Underplating — Nickel

Operating Temperature: +260°C max.