Design-enhanced Micro SAS connectors now include dual-drive stacked
receptacles with an integrated ground plane and a protective pin cover
for greater reliability in compact storage applications
Molex’s Micro Serial Attached SCSI (Micro SAS) connectors are the
next-generation of 1.8" storage serial I/O solutions designed for compact,
high-speed, high-bandwidth SAS applications including Host Bus Adapters
and Storage Servers.
Leading Molex’s family of Micro SAS plug and receptacle products is the
78495-0001 dual-stack right angle receptacle. This halogen-free, through-hole
interconnect stacks two high-speed 1.8" Solid State Drives (SSDs) instead of
one, giving storage users twice the drive density of a single right angle equivalent
(series 78395). The connector is now shipped with a pin cover that protects all
rear terminals from any damage caused by handling or shipment.
A key highlight of this dual-stack connector is the patented Integrated Ground
Plane feature. This feature consists of a specially stamped terminal that shields
any cross talk between the two adjacent high-speed differential pairs on each
side of the plane, improving the connector’s signal integrity and electrical speed.
Because the Integrated Ground Plane replaces any need for separate grounding
pins to be used for the differential high-speed contact pairs, it gives the
connector more PCB space-savings, since it terminates beneath the connector
only as a single, throughhole soldertail.
One other key feature of the dual-stack connector is its unique overlapping,
staggered terminal design within the differential signal pair located on each
side of the Integrated Ground Plane in the upper region. This overlapping
configuration facilitates stronger coupling within the differential signal pair and
induces a higher signal integrity for the connector.
The unique 45-degree terminal bend design of the dual-stack receptacle allows a
shorter electrical path between the mating contacts and the PCB, and enables a
smoother signal transmission and therefore, higher electrical performance of the
connector. Fully compatible with Molex Micro SATA drives and enabling fast
data transfer rates of up to 3Gbps, this connector satisfies the SAS 2.0 and the
SFF-8486 Specifications*.
Molex right angle straddle-mount plugs are available with (series 78528) and
without (series 78394) drive-holder features to meet low-profile height
requirements. Together with the single right angle receptacle (series 78395),
these plugs feature a high data transfer speed of 6Gbps and satisfy the SAS 2.0
and SFF-8486 Specifications.
Visit our website at www.molex.com/product/microsas.html
for more information.
* The SFF-8486 Specification defines the physical interface and general
Dual-stack Receptacle
• Dual-stack receptacle mounts two
• Integrated ground plane connects
• Overlapping, staggered terminal
FEATURES AND BENEFITS
performance requirements for Micro SAS connectors designed for use in
high-speed serial interconnect applications including, but not limited to,
Solid State Disk (SSD) drives
1.8" SSD drives, doubling the
drive-density of a single SSD device
over the same connector footprint
the ground pins on the upper and
lower deck of the receptacle to the
ground on the PCB for high-speed
performance while shielding any
coupling that may take place
between two neighboring high-speed
differential pairs of contacts
design within a differential signal
pair facilitates desired stronger
coupling between the terminals with-
in a differential pair for improved
signal integrity
• 45-degree terminal bend design in
• Connector pin cover provides full
All versions
• Small form factor connectors
• Satisfy SAS 2.0 Specifications
• 100% backward compatible with
Molex Micro Serial ATA; Molex Micro
SAS connectors are intermateable
with Micro Serial ATA parts as Molex
Micro SATA connectors have a middle
rib in the Micro SATA housing
the connector housing facilitates
smoother signal transmission from
mating contacts to the PCB
protection to the terminals at the
rear of the connector
provide greater PCB real estate
savings
and enable fast data rates of up to
6Gbps (3Gbps for 78495)
• Application of Micro SAS Plug in
• Crush ribs on plugs provide added
• Drive-holder housing feature for
• Keying features and guide rails on
Micro Serial Attached
SCSI (Micro SAS)
Connectors
78394 Plug, Right Angle,
78528 Plug, Right Angle,
78395 Receptacle, Right
78495 Receptacle,
Molex’s family of high-speed
Micro SAS Connectors featuring the
Dual-stack Receptacle with Pin Cover
1.8" form factor drives (SSD or
HDD) host receptacle on backplane
can accommodate Molex Micro
SAS or Micro SATA drives. Drive
can be built with any Molex Micro
SAS or Micro SATA Plugs, and are
programmable with SAS or SATA
firmware
PCB retention to straddle-mounted
plugs
series 78528 plug supports drive
casing in soldertail region
connectors prevent mis-mating of
parts and ensure smooth entry of
plugs to receptacles
Straddle Mount
Straddle Mount,
with Drive Holder
Angle, SMT
Dual-stacked,
Right Angle,
Through Hole
with Pin Cover