CP2108-B02-GMR USB to UART Bridge IC - Equivalent & Substitute Parts

Part Overview

The CP2108-B02-GMR is a USB Bridge IC manufactured by Silicon Labs that provides USB 2.0 to UART interface conversion in a 64-QFN (9x9) package. This component is classified as obsolete, which necessitates identification of active equivalent parts for ongoing design support and procurement continuity. The device integrates USB protocol bridging functionality with UART serial communication, making it suitable for applications requiring USB-to-serial conversion in embedded systems and industrial interfaces.

Substiute Parts

CP2108-B02-GMR

Silicon LabsIn Stock: 2589CP2108-B02-GMR Datasheet

Current PartRFQ

CP2108-B03-GMR

Silicon LabsIn Stock: 38750CP2108-B03-GMR Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the CP2108-B02-GMR is determined by strict equivalence across the following critical parameters:

• Manufacturer & Base Product: Both parts must be Silicon Labs CP2108 series devices
• Functional Equivalence: USB Bridge with USB to UART conversion capability
• Electrical Specifications: Identical supply voltage (3V ~ 3.6V), supply current (56mA), and operating temperature range (-40°C ~ 85°C)
• Interface Standards: USB 2.0 protocol and UART interface compatibility
• Package Compatibility: 64-QFN (9x9) form factor with exposed pad configuration
• Moisture Sensitivity: MSL 3 rating (168 Hours)

The CP2108-B03-GMR qualifies as a direct substitute based on complete alignment with all specified electrical, functional, and mechanical parameters. The primary distinction is product status: CP2108-B03-GMR is active and available, whereas CP2108-B02-GMR is obsolete.

Parameter Comparison

Engineering Selection Recommendations

The CP2108-B03-GMR is the appropriate selection for new designs and replacement procurement due to its active product status and full regulatory compliance. The substitute part maintains complete electrical and mechanical equivalence with the obsolete CP2108-B02-GMR while offering the advantage of current availability and ROHS3 compliance certification. Both parts share identical functional specifications, package geometry, and electrical operating parameters, ensuring direct compatibility in existing circuit designs without modification to PCB layouts or firmware implementations.

Frequently Asked Questions (FAQ)

Q: Can CP2108-B03-GMR be used as a direct replacement for CP2108-B02-GMR in existing designs?

A: Yes. The CP2108-B03-GMR provides complete functional and electrical equivalence. Both devices feature identical USB 2.0 to UART bridge functionality, supply voltage requirements (3V ~ 3.6V), current consumption (56mA), operating temperature range (-40°C ~ 85°C), and 64-QFN (9x9) package configuration. No circuit modifications or firmware changes are required.

Q: What is the primary reason for substitution?

A: The CP2108-B02-GMR is classified as obsolete. The CP2108-B03-GMR is the active equivalent part from Silicon Labs, ensuring long-term availability and supply chain continuity.

Q: Are there differences in packaging or handling requirements?

A: Both parts share identical MSL 3 (168 Hours) moisture sensitivity ratings and 64-VFQFN exposed pad package specifications. Handling, storage, and reflow procedures remain consistent between the two parts.

Q: Does the substitute part meet current regulatory standards?

A: The CP2108-B03-GMR is certified ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements for component procurement.

Q: Are there inventory or lead time considerations?

A: The CP2108-B03-GMR maintains significantly higher inventory availability (38,687 units) compared to the obsolete CP2108-B02-GMR (2,544 units), providing improved procurement reliability and reduced lead times.