IEEE 1394b / AS5643 · up to 400 Mb/s
22 AWG data pairs, larger power conductors and shield
110 +6/−4 Ω · < 15 V
Longer links and voltage-drop-sensitive equipment
Enquire about this configurationCONMOLY / ENGINEERING & CONNECTIVITY
FireWire® Aerospace Data Cables
Reference configuration: 110-ohm data-and-power cable for IEEE 1394b / AS5643-class airborne and vehicle networks through 400 Mb/s, with 22, 24 and 26 AWG directions that balance voltage drop, mass and routing space.
Data Cables
CM-DATA-1394
FireWire® Cables
Reference configurations only; specifications and certifications require confirmation.
- Reference · Up to 400 Mb/s
- Reference · 110 +6/−4 Ω
- Reference · 22–26 AWG
Reference specifications
Selection reference. Published third-party figures below describe specific reference configurations; they are not Conmoly guaranteed values or certifications. Confirm the final construction and test requirements with engineering.
The 22, 24 and 26 AWG sizes are separate part numbers; transmission values cover the family.
Scroll the table horizontally to view all configuration conditions.
| Parameter | Reference value | Configuration / condition |
|---|---|---|
| Maximum data rate | 400 Mb/s | IEEE 1394b / AS5643 direction |
| Standard impedance | 110 +6/−4 Ω | Nominal value |
| Typical operating voltage | < 15 V | System operating condition |
| Velocity / delay | 80% · 4.10 ns/m | Nominal values |
| Capacitance / intra-pair skew | 36.1 pF/m · 3.5 ps/m | Typical values |
| Dielectric withstand | 1500 / 1000 Vrms | Conductor-conductor / conductor-shield |
| Temperature range | −55 to +200 °C | Full family |
Reference source: www.gore.com
Available configurations
| 22 AWG extended-distance type | Larger conductor section for power-drop and longer-link requirements. |
|---|---|
| 24 AWG balanced type | Balances mass, diameter, termination and aerospace routing. |
| 26 AWG lightweight type | For dense, short or mass-sensitive equipment links. |
Configuration comparison
The 22, 24 and 26 AWG directions represent separate constructions. Final part number is determined with bus length, nodes, supply current, voltage drop, connectors and shield grounding.
IEEE 1394b / AS5643 · up to 400 Mb/s
Balanced 24 AWG data-and-power construction
80% velocity · 3.5 ps/m intra-pair skew
General avionics and vehicle equipment links
Enquire about this configurationIEEE 1394b / AS5643 · up to 400 Mb/s
Lightweight, compact 26 AWG construction
−55 to +200 °C
Dense, short and mass-sensitive harnesses
Enquire about this configurationCable construction
| Silver-plated copper-alloy conductors | Gauge, voltage drop, strength and termination contacts define the conductor construction. |
|---|---|
| Low-loss insulation | Expanded PTFE/PTFE controls impedance, delay and high-frequency attenuation. |
| Controlled signal units | Differential pairs, quads or multichannel video/data units are formed around the protocol. |
| Individual and overall shields | Pair coupling, external EMI and connector return continuity are managed together. |
| Environmental jacket | Wide temperature, abrasion, flame, marking and harness termination are balanced. |
Selection checklist
| Protocol and speed | Interface revision, target rate, encoding and maximum channel length |
|---|---|
| Electrical boundary | Impedance, insertion/return loss, skew and dielectric withstand |
| Channel construction | Pair count, auxiliary wires, power and shield zoning |
| Installation envelope | Gauge, diameter, mass, bend radius and harness section |
| Environment | Temperature, vibration, abrasion, fluids, smoke/toxicity and flame |
| Termination | Connector, contact, backshell, grounding and strain relief |
Applications
- Airborne mission networks
- Sensors and video
- Defense vehicle electronics
- IEEE 1394b equipment links
Interfaces & termination
- Aerospace circular or rectangular connectors
- High-density contacts and backshells
- Pigtail, fixed-length harness or complete assembly
Project validation checklist
- Impedance, insertion/return loss, crosstalk and skew
- Continuity, wire map, dielectric withstand and insulation resistance
- Temperature, vibration, abrasion, flex and termination retention
- Full-channel test at target protocol, length and connector configuration
Data rate and channel capability depend on the final cable, length, connectors and termination process and must be confirmed as a complete channel.
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