For a LAN8720 or RTL8201 sourcing request, provide the exact manufacturer ordering code and the approved board context. A shortened family name can omit revision, package and temperature details. Current supply must be confirmed for the offered variant; matching the phrase “Ethernet PHY” is not enough for an equivalent purchase.
Match the MAC interface and clock arrangement
Record the interface used between the processor and PHY, along with reference-clock frequency, direction and voltage. The Microchip LAN8720A documentation identifies it as a 10/100 transceiver with an RMII interface. Check the corresponding manufacturer datasheet for the exact RTL8201 variant before making any comparison.
Do not infer interoperability from the network-side speed alone. A board designed around one MAC connection and clock scheme may require routing, resistor or firmware changes to use another PHY. Keep those potential changes in an engineering review rather than embedding them in a purchasing assumption.
Review what surrounds the PHY
Identify the transformer, connector and protection circuit already qualified on the board. Compare termination, bias and supply connections with the proposed device’s reference circuit. Review reset timing and startup straps, including any pins shared with LEDs or other functions.
Check the actual package drawing, exposed pad and pin functions. Preserve the required temperature grade and packing option in the RFQ. If material is offered under a similar but different suffix, obtain a documented comparison before approving it for assembly.
Connect the quotation to the production test
Provide the required quantity, delivery date and any approved alternatives. Ask for the offered ordering code, packing condition, lot information and applicable documentation. State whether the request is for evaluation or for release against an already-qualified BOM.
For a new candidate, test device identification, driver initialization, link negotiation and sustained traffic with the intended network equipment. Include cable removal and reconnection, resets and power interruptions. Preserve the software version and board revision used for approval so subsequent purchasing has a clear acceptance reference.
Frequently asked questions
Are LAN8720 and RTL8201 automatic cross-references?
No. Compare the exact variants using official datasheets and the actual schematic. Interface, package, clocking, registers and external components can prevent direct substitution.
Does successful packet transfer on a sample complete acceptance?
It is useful initial evidence. Qualification should also cover the application’s relevant traffic load, recovery behavior, supply conditions and operating temperature range.
Send SENICO an Ethernet PHY RFQ with the full part number, interface and quantity. Availability, price and delivery timing are confirmed against the specific offered material.