BPX3/8 PCI Express Backplane

Key Features

  • Wide Range of SBC Options
  • 2-x8 PCIe I/O Card Slots
  • 4-64-bit/66MHz PCI-X Slots
  • 4-64-bit/33MHz PCI Slots

The BPX3/8 PCI Express Backplane

The BPX3/8 PCI Express backplane provides electrical connections for a single or dual-processor single board computer, two PCI Express, four PCI-X and four PCI plug-in I/O cards.  The backplane design places the single board computer slot near the center of the backplane which enables more efficient air flow within a rackmount computer chassis.

The SBC’s two x8 PCI Express links drive the PCIe card slots directly while the remaining x4 link enables the dual-channel PCIe-to-PCI-X bridge chip that drives the four PCI-X slots and provides the interface to the PCI-to-PCI bridge that drives the four 64-bit/33MHz PCI slots.  The ten option card slots on the PCI Express backplane support standard PCIe, PCI-X and PCI plug-in I/O cards typically used in communication platforms.

Key features of the BPX3/8 PCI Express backplane include:

  • Supports one PICMG 1.3 combo or server-class SBC
  • SBC slot located near the center of the backplane improves chassis air flow
  • Supports two PCI Express and fourteen PCI-X/PCI cards
    • 2 –  x8 PCI Express electrical / x16 mech. connector
    • 4 – 64-bit/66MHz PCI-X
    • 4 – 64-bit/33MHz PCI
  • One, dual-channel PCIe-to-PCI-X bridge chip
  • One, PCI-to-PCI bridge chip
  • Long-life backplane with 7+ years of availability enhances system design stability
The BPX3/8 PCI Express backplane is designed, manufactured and supported in the USA, and comes with a 5-year warranty.

Tech Specs

Model Number



14-slot form factor supports one PICMG 1.3 SBC and PCI Express, PCi-X and PCI option cards


Board dimensions: 11.1” x 11.9”

The nominal backplane thickness is 0.080”; however, the backplane mounting holes are recessed 0.018” on the bottom to provide an effective PCB thickness of 0.062” for use in the chassis design process.


PCI Express Slots
Two, x8 PCIe slots (x16 mechanical) driven directly from SBC

Four, PCI-X/PCI slots, 64-bit/66MHz
Four, PCI slots, 64-bit/33MHz

See datasheet or mechanical layout diagram for detailed slot routing information.


11.1″ x 11.9″ (14-slot)

Card Slots

2 – x8 PCI Express 2.0/1.1 electrical / x16 mech. connectors
4 – 64-bit/66MHz PCI-X
4 – 64-bit/33MHz PCI

Suggested SHB/SBC’s

Dual-processor SBC’s




BXT7059 Single Board Computer

BXT7059 Details


JXT6966 Singleboard Computer

JXT6966 Single Board Computer

JXT6966 Details


MCXT Single Board Computer

MCXT Single Board Computer

MCXT Details


SLT Single Board Computer

SLT Single Board Computer

SLT Details

Single-processor SBC’s




TSB7053 Single Board Computer

TSB7053 Details


BXTS7059 Singleboard Computer

BXTS7059 Single Board Computer

BXTS7059 Details


JXTS6966 Singleboard Computer

JXTS6966 Single Board Computer

JXTS6966 Details


MCXI Single Board Computer

MCXI Single Board Computer

MCXI Details


SLI Single Board Computer

SLI Single Board Computer

SLI Details

SHB Configuration

Single or dual-processor PICMG 1.3 Combo or Server Class SBCs

Agency Approvals and Compliance

Designed for UL60950 and CAN/CSA C22.2 No.60950-00, EN55022:1998 Class B, EN61000-4-2:1995, EN61000-4-3:1997, EN61000-4-4:1995, EN61000-4-5:1995, EN61000-4-6:1996, EN61000-4-11:1994

Power Connectors

The standard BPX3/8 backplane is available with vertical or low-profile right angle power connector suitable for use with either an ATX or EPS power supply.

Power Indicators

+5V, -5V, +5V AUX*, +12V, -12V and +3.3V power connection and status.


Operating Temp: 0°C TO 60°C
Storage Temp: -20°C to 70°C
Humidity:  5% to 90%, non-condensing

Trenton’s BPX3/8 is a lead free, RoHS compliant backplane.



Product Manual
Mechanical Drawings
Block Diagram
Configuration Details



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