USB2503-HZH Equivalent & Substitute Parts

Part Overview

The USB2503-HZH is an active USB 2.0 hub controller manufactured by Microchip Technology, supplied in a 48-QFN-EP (7x7) package with exposed pad. This interface controller manages USB hub functionality for multi-port USB connectivity applications. The part is currently in active production status with 16,247 units in stock inventory.

Substitute parts are identified when they maintain identical electrical specifications, mechanical compatibility, and functional performance within the defined parameter tolerance range. Alternative sourcing becomes necessary due to supply chain considerations, inventory availability, or manufacturing continuity planning.

Substiute Parts

USB2503-HZH

Microchip TechnologyIn Stock: 16341USB2503-HZH Datasheet

Current PartRFQ

USB2503A-HZH

SMSCIn Stock: 2280USB2503A-HZH Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the USB2503-HZH is determined by strict parameter matching across the following criteria:

Electrical Parameters: Supply voltage range (1.62V ~ 3.6V), supply current (100mA), and operating temperature range (0°C ~ 70°C) must be identical or encompassing.

Functional Parameters: The part must perform USB hub controller functionality with USB 2.0 protocol compliance.

Mechanical Parameters: Package type must be 48-QFN-EP (7x7) with exposed pad configuration to ensure PCB footprint and thermal management compatibility.

Compliance Parameters: RoHS3 compliance and REACH status are documented for the main part; substitute parts must maintain equivalent or superior compliance standing.

The USB2503A-HZH meets all substitution criteria and is classified as a parametric equivalent.

Parameter Comparison

Engineering Selection Recommendations

Both the USB2503-HZH and USB2503A-HZH are active production parts with identical electrical and mechanical specifications. Selection between these parts should be based on:

Inventory Availability: The USB2503-HZH maintains higher stock levels (16,247 units) compared to the USB2503A-HZH (2,253 units), making it the primary choice for immediate procurement.

Compliance Status: The USB2503-HZH carries RoHS3 compliance certification and REACH unaffected status. The USB2503A-HZH carries EAR99 export classification. Both parts meet the HTSUS classification 8542.39.0001.

Supply Chain Continuity: Either part may be selected as a substitute based on supplier availability and lead time requirements, provided design validation confirms functional equivalence in the target application.

Frequently Asked Questions (FAQ)

Q: Can USB2503A-HZH replace USB2503-HZH in existing designs?

A: Yes. Both parts share identical electrical specifications (1.62V ~ 3.6V supply, 100mA current), functional performance (USB 2.0 hub controller), and mechanical packaging (48-QFN-EP 7x7). Direct substitution is supported without PCB redesign.

Q: Are there differences in pin configuration between these parts?

A: No. Both parts use the 48-QFN-EP (7x7) package with exposed pad. Pin assignments and thermal pad dimensions are identical.

Q: What is the operating temperature range for both parts?

A: Both the USB2503-HZH and USB2503A-HZH operate across 0°C to 70°C. Applications requiring extended temperature ranges require alternative part selection.

Q: Do both parts require identical supply voltage?

A: Yes. Both parts operate within the 1.62V to 3.6V supply voltage range. Supply decoupling and filtering requirements remain consistent between parts.

Q: Which part should be selected for new designs?

A: Selection should prioritize availability and supply chain lead times. The USB2503-HZH is recommended as the primary choice due to higher inventory levels. The USB2503A-HZH serves as an approved substitute when primary sourcing is constrained.