USB3290-FH Equivalent & Substitute Parts

Part Overview

The USB3290-FH is a full-duplex USB 2.0 transceiver manufactured by Microchip Technology, designed for high-speed data interface applications requiring 8 drivers and 8 receivers in a compact 40-VFBGA package. This component operates at 480 Mbps and is rated for industrial temperature ranges from -40°C to 85°C.

The USB3290-FH has reached obsolete product status. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production requirements for systems currently utilizing this transceiver.

Substiute Parts

USB3290-FH

Microchip TechnologyIn Stock: 1202USB3290-FH Datasheet

Current PartRFQ

USB3280-AEZG

Microchip TechnologyIn Stock: 26588USB3280-AEZG Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the USB3290-FH is determined by the following critical parameters:

Primary Substitution Criteria:

• Manufacturer: Microchip Technology (same manufacturer ensures design compatibility and support continuity)
• Protocol: USB 2.0 (functional protocol requirement)
• Voltage Supply Range: 3V to 3.6V (electrical compatibility)
• Operating Temperature: -40°C to 85°C (environmental operating range)
• Mounting Type: Surface Mount (assembly process compatibility)

Secondary Compatibility Factors:

• Data Rate: 480 Mbps (USB 2.0 high-speed specification)
• Duplex Mode: Full (bidirectional communication requirement)

The USB3280-AEZG is identified as the manufacturer-recommended substitute. While this part differs in package format (36-QFN versus 40-VFBGA) and driver/receiver configuration, it maintains electrical compatibility through identical voltage supply specifications and operating temperature range. The USB3280-AEZG is an active product with current manufacturing support and full compliance certifications.

Parameter Comparison

Engineering Selection Recommendations

Product Status Consideration: The USB3290-FH is classified as obsolete, indicating discontinued manufacturing and limited long-term availability. The USB3280-AEZG maintains active product status with current manufacturing support from Microchip Technology, ensuring sustained supply chain access and technical support.

Compliance and Certification: The USB3280-AEZG carries ROHS3 compliance and REACH unaffected status, meeting current environmental and regulatory requirements for electronic components. These certifications support compliance with modern procurement standards and end-of-life disposal regulations.

Electrical Compatibility: Both components operate within the identical voltage supply range of 3V to 3.6V, ensuring direct electrical compatibility in power distribution circuits. This parameter alignment eliminates the need for supply voltage modifications during substitution.

Physical Integration: Package format differs between the main part (40-VFBGA) and substitute (36-QFN). PCB layout redesign is required to accommodate the different footprint and pin configuration. This represents the primary design modification necessary for implementation.

Inventory Status: The USB3280-AEZG is available in substantial quantities (26,553 pieces in stock), supporting both immediate procurement needs and long-term production planning.

Frequently Asked Questions (FAQ)

Q: Can the USB3280-AEZG directly replace the USB3290-FH without PCB modifications?

A: No. The USB3290-FH uses a 40-VFBGA (4x4) package while the USB3280-AEZG uses a 36-QFN (6x6) package. These packages have different physical dimensions, pin counts, and footprints. PCB layout redesign is required, including trace routing and via placement adjustments specific to the QFN package geometry.

Q: Are the electrical supply requirements identical between these parts?

A: Yes. Both the USB3290-FH and USB3280-AEZG operate within the 3V to 3.6V supply voltage range. No modifications to power distribution circuits are necessary from an electrical supply perspective.

Q: What is the significance of the USB3280-AEZG being an active product?

A: Active product status indicates current manufacturing, ongoing technical support from Microchip Technology, and sustained availability through authorized distributors. This contrasts with the obsolete USB3290-FH, which has ceased production and faces declining inventory availability.

Q: Does the USB3280-AEZG meet current environmental compliance standards?

A: Yes. The USB3280-AEZG is ROHS3 compliant and REACH unaffected, meeting current environmental regulations for electronic component manufacturing and disposal in most jurisdictions.

Q: What is the primary design consideration when implementing the USB3280-AEZG as a substitute?

A: The primary consideration is package format transition from BGA to QFN technology. This requires PCB redesign to accommodate the different footprint, pin spacing, and thermal management characteristics of the 36-QFN package.

Q: Are both parts manufactured by the same company?

A: Yes. Both the USB3290-FH and USB3280-AEZG are manufactured by Microchip Technology, ensuring design philosophy consistency and technical support continuity.

Q: What is the Moisture Sensitivity Level (MSL) of the substitute part?

A: The USB3280-AEZG has an MSL rating of 3 (168 Hours), indicating standard moisture sensitivity handling requirements during storage and assembly processes.