PHY Transceiver Component - Industrial Networking IC

Product Specifications

Technical details and manufacturing context for PHY (Physical Layer) Transceiver

Definition

The PHY (Physical Layer) Transceiver is a critical integrated circuit component embedded within a Network Interface Card (NIC). It implements the physical layer (Layer 1) of the OSI model, handling the direct electrical or optical interface to the network cable or fiber. Its primary role is to convert digital data from the NIC's Media Access Controller (MAC) into analog signals suitable for transmission over the physical medium (e.g., copper wire, fiber optic), and vice-versa for incoming signals. It manages essential low-level functions such as signal modulation/demodulation, line coding, clock recovery, and physical link establishment and monitoring. The transceiver supports data rates of 10/100/1000 Mbps with auto-negotiation per IEEE 802.3. It operates at a supply voltage of 3.3 V ±5% (typical for 1000BASE-T) and within an industrial temperature range of -40 to 85 °C. Power consumption ranges from 0.5 to 1.5 W depending on link speed. The device interfaces with the MAC via MII, RMII, GMII, or RGMII (per IEEE 802.3). It is commonly packaged in a QFN-48 (JEDEC standard). Operating humidity is 10–90% RH (non-condensing). ESD protection on I/O pins is ±8 kV (HBM, per IEC 61000-4-2). It supports cable lengths up to 100 m on Cat5e or better (per IEEE 802.3). Typical latency is 1–2 µs for 1000BASE-T. The PHY transceiver is fabricated on silicon, with copper/tin leadframe and bonding wires, and encapsulated in epoxy molding compound. It is a component-level product used in computer, electronic, and optical product manufacturing. For procurement, verify model-specific values and standards with the legal manufacturer or supplier.

Working Principle

The PHY transceiver receives parallel digital data frames from the MAC sublayer. It encodes this data (e.g., using Manchester encoding, 4B/5B, or PAM4 for higher speeds) into a serial bitstream. This stream modulates an electrical signal (for copper) or drives a laser/LED (for fiber) for transmission. On reception, it recovers the clock from the incoming analog signal, amplifies and equalizes it, demodulates it back into a serial bitstream, decodes it, and converts it back into parallel digital data for the MAC. It continuously monitors link integrity through mechanisms like auto-negotiation and link pulse detection.

Common Materials

Silicon (for integrated circuit die), Copper/Tin (for leadframe and bonding wires), Epoxy Molding Compound (for IC packaging)

Technical Parameters

Parameter	Typical range	Notes & selection driver
Data Rate	10/100/1000 Mbps	Auto-negotiation supportedIEEE 802.3
Supply Voltage	3.3 ±5% V	Typical for 1000BASE-T
Operating Temperature	-40–85 °C	Industrial grade
Power Consumption	0.5–1.5 W	Depends on link speed
Interface	MII/RMII/GMII/RGMII	Selectable per designIEEE 802.3
Package Type	QFN-48	Common for PHY transceiversJEDEC
Operating Humidity	10–90 % RH	Non-condensing
ESD Protection	±8 kV	HBM on I/O pinsIEC 61000-4-2
Cable Length	100 m	Cat5e or betterIEEE 802.3
Latency	1–2 µs	Typical for 1000BASE-T

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

Transmitter (TX) Block
Encodes and serializes digital data from the MAC, then drives the analog signal onto the physical medium.

Material: Silicon IC structures
Receiver (RX) Block
Amplifies, equalizes, and recovers the clock/data from the incoming analog signal, then deserializes and decodes it for the MAC.

Material: Silicon IC structures
Clock Data Recovery (CDR) Circuit
Extracts the timing (clock) information from the incoming data stream to synchronize the receiver.

Material: Silicon IC structures
Auto-Negotiation Logic Part
Automatically detects and negotiates the highest common speed and duplex mode with the link partner.

Material: Silicon IC structures (digital logic)
Media Dependent Interface (MDI) Part
The physical electrical or optical connection pins/pads that interface directly with the network cable or transceiver module.

Material: Copper/Tin (bond pads, leads)

Applied To / Applications

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

Network Interface Card

View system integration details

Communication Chipset

View system integration details

Manufacturers of PHY (Physical Layer) Transceiver

Manufacturer profiles associated with PHY (Physical Layer) Transceiver.

Sourcing PHY (Physical Layer) Transceiver from China?

Tell us your specification and target quantity — we will match it against manufacturer records and come back with the factories that fit.

Request manufacturers We manufacture this

Manufacturer listings support early research and capability understanding. They are not certification, ranking, or transaction guarantees.

Procurement Evaluation Criteria

A practical evidence checklist for RFQ preparation and supplier evaluation.

Technical documentation

Request current drawings, revision history, and a signed specification sheet.

Manufacturing capability

Verify equipment lists, process limits, capacity, and representative production evidence.

Inspection readiness

Confirm test methods, calibrated equipment, sampling plans, and traceable reports.

Supplier transparency

Check the legal entity, factory address, ownership, certifications, and direct contacts.

CNFX does not score or rank suppliers. Buyers must verify all claims and documents with the legal manufacturer before ordering.

Frequently Asked Questions

What is the role of a PHY transceiver in a network interface card?

The PHY transceiver handles the physical layer (Layer 1) of the OSI model. It converts digital data from the MAC into analog signals for transmission over the network medium and performs the reverse for incoming signals, including modulation, line coding, and clock recovery.

What data rates and standards does this PHY transceiver support?

It supports 10/100/1000 Mbps with auto-negotiation per IEEE 802.3. The interface options (MII, RMII, GMII, RGMII) also follow IEEE 802.3. Always verify the specific model's compliance with the manufacturer.

What are the typical operating conditions for this component?

The supply voltage is 3.3 V ±5% (typical for 1000BASE-T), operating temperature is -40 to 85 °C (industrial grade), and humidity is 10–90% RH non-condensing. Power consumption ranges from 0.5 to 1.5 W depending on link speed.

How should I verify the specifications for my application?

The values provided are directory reference ranges. For exact specifications, including ESD protection (±8 kV HBM per IEC 61000-4-2) and cable length (100 m on Cat5e or better), consult the legal manufacturer or supplier for the specific model.

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.

Buyer enquiry

Request manufacturing insight for PHY (Physical Layer) Transceiver

Ask for use case, specification boundaries, supplier type, and RFQ preparation information for this product.

Where it goes: Straight to the CNFX editorial desk, and to the manufacturer if this product is linked to a claimed profile. Nothing is broadcast to a supplier list.
Your details stay here: We do not sell or rent enquiry data, and we do not add you to a mailing list. Used only to answer this request.
No commission, no middleman: CNFX is a directory. We take no cut of any order and never negotiate on a supplier's behalf.
What we don't claim: A listing is not an endorsement. Qualify every supplier and verify every figure yourself before ordering.

voltage:	1.8V, 2.5V, or 3.3V supply rails
data rate:	10 Mbps to 100 Gbps (depending on standard)
temperature:	0°C to 70°C (commercial), -40°C to 85°C (industrial)
power consumption:	Typically 100 mW to 2W

PHY (Physical Layer) Transceiver

Product Specifications

Applied To / Applications

Industrial Ecosystem & Supply Chain Structure

Application Fit & Sizing Matrix

Reliability & Engineering Risk Analysis

Compliance & Manufacturing Standards