Understand the difference.
Compare the meaning, drawing context and source references of two entries. A similar graphic or shared abbreviation does not establish equivalence.
PHY
SymbolsEthernet physical-layer transceiver
An Ethernet PHY handles the electrical signalling of the selected Ethernet physical link.
- Drawing use
- Schematic
- Application
- Installation & communications
- Reference family
- Manufacturer
A distinction that matters
A PHY is not a complete Ethernet switch, router or application controller.
SPE
SymbolsSingle-pair Ethernet interface
A single-pair Ethernet interface uses its specified physical-layer arrangement over one conductor pair.
- Drawing use
- Schematic
- Application
- Installation & communications
- Reference family
- Manufacturer
A distinction that matters
The single-pair label does not make every Ethernet variant or connector interchangeable.
Original educational previews. Follow the source references on each full entry for the appropriate standard or selected product.