FUSB301ATM1X USB-C Port Controller Equivalent & Substitute Parts

Part Overview

The FUSB301ATM1X is an onsemi USB Type-C port controller designed for USB 2.0 applications with I2C and USB interface capabilities. This component functions as a programmable USB controller in a 12-XFQFN (1.6x1.6) package. The FUSB301ATM1X is classified as obsolete, necessitating identification of active equivalent and substitute parts for new designs and ongoing production requirements. Substitute parts must maintain functional compatibility across USB protocol, controller function, and interface specifications while accommodating packaging and supply chain considerations.

Substiute Parts

FUSB301ATM1X

onsemiIn Stock: 4920FUSB301ATM1X Datasheet

Current PartRFQ

FUSB301ATMX

onsemiIn Stock: 34647FUSB301ATMX Datasheet

SimilarRFQ

FUSB301TMX

onsemiIn Stock: 16039FUSB301TMX Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the FUSB301ATM1X are identified based on the following critical parameters that determine functional and mechanical compatibility:

Primary Compatibility Criteria:

• Manufacturer: onsemi (same manufacturer ensures design continuity)
• Protocol: USB (maintains USB communication standard)
• Function: Controller (preserves functional role in system architecture)
• Interface Type: I2C and USB (ensures communication protocol compatibility)
• Voltage Supply Range: 2.8V ~ 5.5V (maintains power supply compatibility)
• Operating Temperature: -40°C ~ 85°C (ensures thermal operating envelope)
• RoHS Status: ROHS3 Compliant (maintains environmental compliance)
• Moisture Sensitivity Level: 1 (Unlimited) (ensures handling and storage compatibility)

Secondary Considerations:

• Package Type and Supplier Device Package (affects PCB layout and assembly)
• Packaging Format (affects supply chain and procurement)
• Product Status (Active status ensures ongoing availability)

The FUSB301ATMX and FUSB301TMX are identified as substitute parts based on matching core functional parameters while accommodating variations in package configuration and supply status.

Parameter Comparison

Engineering Selection Recommendations

FUSB301ATMX Selection Criteria: The FUSB301ATMX maintains identical electrical specifications to the FUSB301ATM1X, including voltage supply range (2.8V ~ 5.5V), operating temperature (-40°C ~ 85°C), and package dimensions (1.6x1.6). Both components are ROHS3 compliant with MSL 1 rating. The FUSB301ATMX holds Active product status, ensuring long-term availability and supply chain continuity. The primary distinction is packaging format (Tape & Reel) and supplier device package designation (12-UTMLP versus 12-X2QFN), which do not affect functional performance. This part is suitable for direct substitution in applications requiring high-volume procurement.

FUSB301TMX Selection Criteria: The FUSB301TMX provides functional equivalence with matching voltage supply (2.8V ~ 5.5V), current supply (356µA), operating temperature (-40°C ~ 85°C), and USB 2.0 standards compliance. This part maintains ROHS3 compliance and MSL 1 rating. The FUSB301TMX differs in package configuration (10-XFQFN versus 12-XFQFN) and supplier device package dimensions (1.6x1.2 versus 1.6x1.6). Active product status ensures ongoing availability. This part is suitable for applications where package footprint differences are accommodated in PCB design.

Both substitute parts are manufactured by onsemi and maintain compliance certifications equivalent to the obsolete FUSB301ATM1X. Selection between FUSB301ATMX and FUSB301TMX depends on PCB layout constraints and packaging procurement preferences.

Frequently Asked Questions (FAQ)

Q: Can FUSB301ATMX directly replace FUSB301ATM1X without PCB modifications?

A: The FUSB301ATMX maintains identical electrical specifications and package dimensions (1.6x1.6). Both use 12-pin configurations with matching voltage supply ranges and operating temperatures. Direct substitution is supported from an electrical and thermal standpoint. Packaging format differences (Tape & Reel versus original format) do not affect component functionality or PCB assembly compatibility.

Q: What are the key differences between FUSB301ATMX and FUSB301TMX?

A: Both parts share identical voltage supply (2.8V ~ 5.5V), current supply (356µA), and operating temperature ranges (-40°C ~ 85°C). The primary differences are package pin count (12 versus 10) and physical dimensions (1.6x1.6 versus 1.6x1.2). The FUSB301TMX requires PCB layout modifications to accommodate the 10-pin configuration. Both maintain USB 2.0 compliance and I2C/USB interface compatibility.

Q: Why is the FUSB301ATM1X classified as obsolete?

A: The FUSB301ATM1X is designated obsolete by the manufacturer. The FUSB301ATMX and FUSB301TMX are active alternatives that provide equivalent or superior functionality with ongoing manufacturing support and supply availability.

Q: Are all three parts RoHS3 compliant?

A: Yes. The FUSB301ATM1X, FUSB301ATMX, and FUSB301TMX are all ROHS3 compliant with Moisture Sensitivity Level 1 (Unlimited), ensuring equivalent environmental and handling compliance.

Q: Which substitute part should be selected for new designs?

A: For new designs, either FUSB301ATMX or FUSB301TMX is appropriate based on PCB layout requirements. The FUSB301ATMX maintains the 12-pin configuration matching the original part, minimizing design changes. The FUSB301TMX offers a 10-pin alternative if space constraints permit package footprint reduction.

Q: What is the impact of different packaging formats (Tape & Reel versus Cut Tape)?

A: Packaging format affects procurement and assembly logistics but does not impact component electrical performance or PCB functionality. Tape & Reel (FUSB301ATMX) is optimized for high-volume automated assembly. Cut Tape with Digi-Reel® (FUSB301TMX) provides flexibility for lower-volume or mixed-component procurement.

Q: Are the I2C and USB interface specifications identical across all three parts?

A: Yes. All three parts (FUSB301ATM1X, FUSB301ATMX, and FUSB301TMX) support I2C and USB interfaces with USB 2.0 protocol compliance, ensuring functional compatibility in applications requiring these communication standards.