KSZ8051RNLUB-TR-VAO Microchip Integrated Circuit (Quad Flat No-Lead) In Stock
KSZ8051RNLUB-TR-VAO is an automotive-grade 10/100BASE-T/TX Ethernet physical-layer transceiver by Microchip Technology. Key specs: single transceiver, VQFN-32 package, AEC-Q100 qualified for in-vehicle network designs. Available in stock with worldwide shipping.
- Manufacturer
- Microchip
- Package
- Quad Flat No-Lead
- Pin Count
- 32
- Lifecycle
- ACTIVE
- Datasheet
- KSZ8051RNLUB-TR-VAO Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $1.6700(MOQ 100)
- Temp Range
- -40.0°C to 85.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- AEC-Q100 automotive-qualified 10/100BASE-T/TX PHY enables reliable in-vehicle Ethernet connectivity for ADAS, infotainment, and body control networks
- Compact VQFN-32 (5 mm x 5 mm) QFN package reduces PCB footprint compared with LQFP alternatives while meeting automotive vibration and thermal requirements
- Single-function transceiver architecture with MII/RMII interface simplifies integration with automotive-grade SoCs and microcontrollers requiring 100 Mbps Ethernet
Applications
KSZ8051RNLUB-TR-VAO serves automotive gateway modules, telematics control units, and ADAS camera interfaces requiring IEEE 802.3 compliant 10/100 Mbps Ethernet PHY connectivity rated for AEC-Q100 Grade environments. It also fits industrial IoT gateways and ruggedized machine controllers where automotive-grade robustness and 20-year lifecycle support are required. The VQFN-32 form factor enables compact designs in space-constrained ECU modules operating across wide temperature ranges.
Specifications
| Manufacturer Package Code | VQFN-32 |
| Factory Lead Time | 10Weeks |
| YTEOL | 20 |
| Data Rate | 100000Mbps |
| JESD-30 Code | S-XQCC-N32 |
| JESD-609 Code | e3 |
| Number of Functions | 1 |
| Number of Transceivers | 1 |
| Package Body Material | UNSPECIFIED |
| Package Equivalence Code | LCC32,.2SQ,20 |
| Package Shape | SQUARE |
| Package Style | CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE |
| Screening Level | AEC-Q100; TS 16949 |
| Supply Voltage-Nom | 3.3V |
| Surface Mount | YES |
| Telecom IC Type | ETHERNET TRANSCEIVER |
| Temperature Grade | INDUSTRIAL |
| Terminal Finish | Matte Tin (Sn) |
| Terminal Form | NO LEAD |
| Terminal Pitch | 0.5mm |
| Terminal Position | QUAD |
| Package | Quad Flat No-Lead |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| ECCN | EAR99 |
| HTS Code | 8517.70.00.00 |
| Country of Origin | Taiwan, Thailand |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What data rate and automotive qualification standard does KSZ8051RNLUB-TR-VAO meet?
KSZ8051RNLUB-TR-VAO supports 10 Mbps and 100 Mbps (10BASE-T and 100BASE-TX) Ethernet with auto-negotiation, qualifying as an AEC-Q100 automotive-grade PHY transceiver. It operates reliably across the extended automotive temperature range typically spanning -40°C to +125°C, and its 20-year YTEOL rating confirms long production lifecycle availability for automotive OEM and Tier-1 supplier programs.
How does the VQFN-32 package of KSZ8051RNLUB-TR-VAO affect PCB layout in a space-constrained automotive ECU?
The VQFN-32 package has a 5 mm x 5 mm body with 0.5 mm pin pitch and an exposed thermal pad, occupying roughly 30–40% less PCB area than a comparable LQFP-32 device. In automotive ECU designs with tight component density on 4-layer boards, this allows the PHY, magnetics filter, and decoupling capacitors to fit within a 15 mm x 20 mm region, leaving room for the ECU connector and power section without increasing board size.
Which interface standards does KSZ8051RNLUB-TR-VAO support for connecting to an automotive SoC MAC layer?
KSZ8051RNLUB-TR-VAO supports both MII (Medium Independent Interface) and RMII (Reduced MII) MAC interfaces, allowing connection to a wide range of automotive SoCs and microcontrollers. RMII reduces the MAC-to-PHY bus from 16 pins to 7 pins at a 50 MHz reference clock, saving PCB routing space and reducing EMI in noise-sensitive CAN/Ethernet co-located ECU designs. Serial Management Interface (SMI/MDIO) provides PHY register access for link status and configuration.
When would an engineer choose KSZ8051RNLUB-TR-VAO over 100BASE-T1 single-pair automotive Ethernet PHYs?
KSZ8051RNLUB-TR-VAO is the better choice when the design must maintain backward compatibility with standard RJ-45 100BASE-TX wiring already present in the vehicle or test bench, or when connecting to non-automotive IEEE 802.3 network equipment during development. 100BASE-T1 single-pair alternatives such as DP83TC811 reduce cabling weight by approximately 50% and suit point-to-point ADAS links over 15 m, but require new wiring harnesses and switches. KSZ8051RNLUB-TR-VAO avoids that infrastructure investment for retrofit and diagnostics port applications.
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