PCI/104-Express Standard Products

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.

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.

Configure Your Product Using the Options Below

Configured Part Number

PCI/104-Express Specified Connectors (Q2™)

Samtec PN	Terminal (Mezzanine Side)			Socket (Carrier Side)					Prints	PADS
Samtec PN	15.24 mm Mated	22 mm Mated	Standard Height	Contacts	Rows	Pins/Row	Lead Style	Plating: H=30µ" Gold	Prints	PADS
ASP-129637-03	X			156	2	78	Surface Mount	H	PDF Print	PADS File
ASP-142781-03		X		156	2	78	Surface Mount	H	PDF Print	PADS File
ASP-129646-03			X	156	2	78	Surface Mount	H	PDF Print	PADS File

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

Shroud: ATS-30-Q
Press fit: PTHF-130-02-G-Q-368 and PTHF-130-03-M-Q-368

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 Specified Connectors (Q2™)

Samtec PN	Terminal (Mezzanine Side)			Socket (Carrier Side)					Prints	PADS
Samtec PN	15.24 mm Mated	22 mm Mated	Standard Height	Contacts	Rows	Pins/Row	Lead Style	Plating: H=30µ" Gold	Prints	PADS
ASP-129637-03	X			156	2	78	Surface Mount	H	PDF Print	PADS File
ASP-142781-03		X		156	2	78	Surface Mount	H	PDF Print	PADS File
ASP-129646-03			X	156	2	78	Surface Mount	H	PDF Print	PADS File

For 3D Models, please use the Configurator here.

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*		M2.5 Thread*		M3 Thread*		Design Support
Samtec PN	Thread Locker	15.24 mm	22 mm	15.24 mm	22 mm	15.24 mm	22 mm	Prints	3D
SO-1524-03-01-01-L		X						PDF Print	STEP
SO-2200-03-01-01-L			X		X		X	PDF Print	STEP
JSOM-1524-02		X						PDF Print	STEP

* Meets PC/104 board spacing specifications

Test Reports