Editorial Technical Reference

Crossbar Switch

This page explains how Crossbar Switch is classified within Computer, Electronic and Optical Product Manufacturing. Technical values and manufacturer relationships are research references; confirm the current specification and supplier evidence for each order.

Technical Definition & Core Assembly

A switching component that connects multiple inputs to multiple outputs simultaneously in an interconnect router.

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Product Specifications

Technical details and manufacturing context for Crossbar Switch

Definition
A crossbar switch is a fundamental component within an interconnect router that enables simultaneous, non-blocking connections between multiple input and output ports. It functions as a matrix switch where any input can be connected to any output without interfering with other connections, facilitating high-speed data routing and switching in networking and computing systems. The switch fabric is typically implemented in silicon, with copper interconnects and plastic packaging, and is available in a range of configurations. The number of ports typically ranges from 8 to 64, with data rates per port from 1 to 400 Gbps, and total switching capacity from 16 to 5120 Gbps. Insertion loss is specified at ≤1.5 dB, and crosstalk at ≤ -30 dB, both per IEC 61300-3-4. Switching time ranges from 10 to 100 ns. Operating temperature is -40 to 85 °C per IEC 60068-2-1/2. Supply voltage is 3.3 to 12 V DC, power consumption 5 to 150 W, and package types include BGA, QFN, and LGA per JEDEC MS-028. Weight ranges from 5 to 50 g. These values are directory reference ranges and must be confirmed for the specific model and application. The crossbar switch is a component, not a complete system, and its performance depends on the surrounding circuitry and signal integrity. For procurement, verify model-specific parameters and standards with the legal manufacturer or supplier.
Working Principle
The crossbar switch operates using a matrix of switching elements at each intersection of input and output lines. When a connection is required between a specific input and output, the corresponding switching element at that intersection is activated, creating a dedicated path. This allows multiple connections to occur simultaneously without contention, as each input-output pair has its own independent switching point. The switching elements are controlled by a routing logic that determines which paths to establish based on the incoming data packets. The matrix architecture ensures non-blocking behavior, meaning that any idle input can be connected to any idle output without disturbing existing connections. This principle enables high-speed data routing with minimal latency and predictable performance.
Common Materials
Silicon, Copper, Plastic
Technical Parameters
ParameterTypical rangeNotes & selection driver
Number of Ports8–64 portsDetermines the scale of the switching matrix.
Data Rate per Port1–400 GbpsHigher rates require better signal integrity.IEEE 802.3
Switching Capacity16–5120 GbpsTotal throughput of the switch fabric.
Insertion Loss≤1.5 dBLower loss improves signal quality.IEC 61300-3-4
Crosstalk≤ -30 dBIsolation between channels.IEC 61300-3-4
Switching Time10–100 nsTime to route a packet.
Operating Temperature-40–85 °COutside this range, performance degrades.IEC 60068-2-1/2
Supply Voltage3.3–12 V DCLogic and I/O levels.
Power Consumption5–150 WAffects cooling requirements.
Package TypeBGA, QFN, LGADetermines PCB footprint and thermal performance.JEDEC MS-028
Weight5–50 gRelevant for board mounting and vibration.

Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.

Components / BOM
  • Switching Matrix
    Core matrix of switching elements that connect inputs to outputs
    Material: Silicon
  • Control Logic
    Manages switching decisions and connection establishment
    Material: Silicon
  • Input/Output Buffers Part
    Temporarily stores data during switching operations
    Material: Silicon

Application & selection

Application Fit & Sizing Matrix

Operational Limits
pressure: 0 to 100 psi
other spec: Signal frequency: DC to 10 GHz, Insertion loss: < 0.5 dB
temperature: -40°C to +85°C
Media Compatibility
✓ Data signals in telecom routers ✓ High-speed digital signals in data centers ✓ RF signals in test equipment
Unsuitable: High-voltage power transmission (> 100V)
Sizing Data Required
  • Number of input/output ports required
  • Maximum data rate per channel
  • Required switching speed/latency

Risk, maintenance & compliance

Reliability & Engineering Risk Analysis

Failure Mode & Root Cause
Contact arcing and pitting
Cause: Electrical arcing due to poor contact alignment, contamination, or excessive switching cycles leading to localized heating and material degradation
Mechanical binding or jamming
Cause: Wear debris accumulation, lack of lubrication, or misalignment of moving components causing increased friction and eventual seizure
Maintenance Indicators
  • Audible arcing or popping sounds during switching operations
  • Visible sparking or discoloration at contact points during operation
Engineering Tips
  • Implement regular contact resistance testing and cleaning protocols to maintain optimal electrical performance
  • Establish preventive lubrication schedules for mechanical components and conduct periodic alignment verification

Indicative industry ranges for design and RFQ preparation. Confirm the exact figures and applicable standard with the manufacturer before specifying.

Compliance & Manufacturing Standards

Manufacturing Precision
  • Contact resistance: ≤10 mΩ
  • Switching time: ±5% of rated specification
Quality Inspection
  • Insertion loss and crosstalk measurement across all paths
Technical documentation
Request current drawings, revision history, and a signed specification sheet.
Manufacturing capability
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Inspection readiness
Confirm test methods, calibrated equipment, sampling plans, and traceable reports.
Supplier transparency
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Manufacturers of Crossbar Switch

Manufacturer profiles associated with Crossbar Switch.

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Frequently Asked Questions

What is the typical number of ports for a crossbar switch?

The directory reference range is 8 to 64 ports. The actual number depends on the specific model and application. Always confirm with the manufacturer.

What data rates does a crossbar switch support?

Data rates per port range from 1 to 400 Gbps, with total switching capacity from 16 to 5120 Gbps. These are reference values; verify for the specific model.

What standards apply to crossbar switch performance?

Insertion loss and crosstalk are referenced to IEC 61300-3-4, operating temperature to IEC 60068-2-1/2, and package types to JEDEC MS-028. These are verification references, not certifications.

How does a crossbar switch achieve non-blocking operation?

It uses a matrix of switching elements at each input-output intersection. Each connection has a dedicated path, so multiple connections can be made simultaneously without interference.

Data basis: editorial classification, named public sources where available, and source-reviewed manufacturer records. See the editorial policy.

Related equipment

Applied To / Applications

This component is essential for the following industrial systems and equipment:

Interconnect Router
View system integration details

Industrial Ecosystem & Supply Chain Structure

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Crossbar Switch.

Crosspoint Switch Matrix Switch

Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records.

Preliminary Technical Classification
This page supports structured research, RFQ preparation, and supplier evaluation. It does not replace buyer-led supplier qualification, standards review, or technical approval.

Compiled and source-reviewed by the CNFX editorial team. Each manufacturer above links to the page on that company's own website where the product is listed, with the date we checked it. How we source and review · Page last updated 13 October 2026

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