PCI/104-Express Standard Products and Support

PCI/104-Express Standard Products and Support

Overview

The PCI/104-Express™ specification establishes a standard to use a high speed PCI Express® bus in embedded applications. It was developed by the PC/104™ Embedded Consortium and adopted by member vote in March 2008. The PC/104™ Consortium chose PCI Express® because of its full PC market adoption, performance, scalability, and growing silicon availability worldwide. It provides a new high-performance physical interface while retaining software compatibility with existing PCI infrastructure.

Incorporating the PCI Express® bus within the industry proven PC/104™ architecture brings many advantages for embedded applications including fast data transfer, low cost due to the unique self-stacking bus of PC/104™, high reliability due to the inherent ruggedness of PC/104™, and long-term sustainability.

pc104 embedded
pci express overview

Connectors

PCI/104-Express – Q2™ (QMS/QFS)

The PCI/104-Express™ standard specifies Samtec’s Q2™ QMS/QFS Products in a three bank (156 pin) orientation for module stacking. Samtec specifically designed the QMS/QFS Products with a 15.24 mm stack height for top and bottom board stacking. Q2™ has triple the wipe of many high speed mezzanine interconnects making it appropriate for rugged applications.

PCI/104-Express Specified Connectors (Q2™)
 

Samtec PN

Terminal (Mezzanine Side)

15.24 mm Mated

22 mm Mated

Socket (Carrier Side)

Standard Height

Contacts

Rows

Pins/Row

Lead Style

Plating: H=30µ" Gold

Prints

3D

PADS

ASP-129637-03

X

 

 

156

2

78

Surface Mount

H

PDF Print

IGES
PARASOLID
STEP

PADS File

ASP-142781-03

 

X

 

156

2

78

Surface Mount

H

PDF Print

IGES
PARASOLID
STEP

PADS File

ASP-129646-03

 

 

X

156

2

78

Surface Mount

H

PDF Print

IGES
PARASOLID
STEP

PADS File

Samtec also offers precision machined standoffs to limit the impact of tolerance stack up issues in stackable embedded applications.

HDR Cable Assembly Options for PCI/104-Express

These high-speed, high-density array cable assemblies feature micro twinax cable and rugged ground planes.

SAMTEC P/N END-TO-END CABLE LENGTH CONNECTOR HEIGHT CONFIGURATION DESCRIPTION END 1 PCI/104-EXPRESS CONNECTOR ON CABLE END 2 PCI/104-EXPRESS CONNECTOR ON CABLE CONNECTOR MOUNTING ON CABLE
HDR-213951-01 282 mm 15.24 mm Standard High Data Rate Cable, (QFS) female to (QMS) male ASP-129637-03 ASP-129646-03 Same Side
HDR-213950-01 282 mm 15.24 mm OneBank High Data Rate Cable, (QFS) female to (QMS) male ASP-129637-13 ASP-129646-22 Same Side

PCI/104-Express OneBank - Q2™ (QMS/QFS)

To offer system designers greater control over PCB real estate, the PC/104™ Consortium has developed PCI/104-Express™ OneBank. This new standard is an extension to PCI/104-Express™ and uses specialized single-bank Q2™ connectors which mate to the traditional 3-bank connectors. Now, engineers can win back valuable board-edge real estate by only bringing the vital main-bus to cards with OneBank connectors. They are available in both 15.24 mm and 22 mm stack heights.

PCI/104-Express OneBank - Q2™ (QMS/QFS)
 

Samtec PN

Terminal (Mezzanine Side)

15.24 mm Mated

22 mm Mated

Socket (Carrier Side)

Standard Height

Contacts

Rows

Pins/Row

Lead Style

Plating: H=30µ" Gold

Prints

3D

PADS

ASP-129637-13

X

 

 

52

2

26

Surface Mount

H

PDF Print

IGES
PARASOLID
STEP

PADS File

ASP-142781-07

 

X

 

52

2

26

Surface Mount

H

PDF Print

IGES
PARASOLID
STEP

PADS File

ASP-129646-22

 

 

X

52

2

26

Surface Mount

H

PDF Print

IGES
PARASOLID
STEP

PADS File

PCI/104-Express™ - Board Stacking Standoffs (SO/JSOM)

Some express mezzanine cards may present a challenge to unmate from their host. To aid in separation, Samtec has developed the SO (Precision Standoff) and JSOM (Micro Jack Screw Standoff). They act as a traditional standoff when collapsed. An Allen-key unscrews and expands the jack screw, dividing the PCBs in a steady, even motion until the mezzanine is safely separated from its host. The SO standoffs include #4-40 hardware available in a 15.24 mm stack height. The JSOM standoff family includes M2.5, M3, and #4-40 hardware available in a 22 mm stack height.

PCI/104-Express™ - Board Stacking Standoffs (SO/JSOM)
Samtec PN Thread Locker
#4-40 Thread*

15.24 mm

22 mm

M2.5 Thread*

15.24 mm

22 mm

M3 Thread*

15.24 mm

22 mm

Design Support

Prints

3D

SO-1524-03-01-01-L

X

PDF Print STEP
SO-2200-03-01-01-L

X

PDF Print STEP
JSOM-1524-02

X

X

X

PDF Print STEP

* Meets PC/104 board spacing specifications

Test Reports

PCI/104-Express Standard

For questions regarding the PCI/104-Express Standard and additional information, please contact us at:

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