FSUSB30BQX USB Switch IC - Equivalent & Substitute Parts

Part Overview

The FSUSB30BQX is a USB Switch IC manufactured by onsemi, designed for high-speed USB 2.0 applications requiring signal routing and switching functionality. This component features a 1-channel DPDT (Double Pole Double Throw) switch configuration in a 14-DQFN surface mount package with an exposed pad. The device is classified as obsolete, making identification of compatible substitute parts essential for ongoing design support and production continuity.

Substiute Parts

FSUSB30BQX

onsemiIn Stock: 1338FSUSB30BQX Datasheet

Current PartRFQ

FSUSB30L10X

Fairchild SemiconductorIn Stock: 20325FSUSB30L10X Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the FSUSB30BQX are identified based on strict electrical and mechanical compatibility criteria. The following parameters determine valid substitution:

• Switch circuit topology: DPDT configuration
• Number of channels: 1 channel
• On-state resistance: Maximum 10 Ohm
• Supply voltage compatibility: 3V ~ 4.3V single supply
• Bandwidth performance: 720 MHz minimum
• USB 2.0 protocol support with Break-Before-Make functionality
• Package compatibility: 14-pin DQFN surface mount with exposed pad
• Operating temperature range: -40°C ~ 85°C minimum
• Compliance standards: ECCN EAR99, HTSUS 8542.39.0001

The FSUSB30L10X meets all specified electrical and mechanical parameters, qualifying it as a direct substitute for the obsolete FSUSB30BQX.

Parameter Comparison

Engineering Selection Recommendations

The FSUSB30L10X is the qualified substitute for the obsolete FSUSB30BQX. Both components share identical electrical specifications, mechanical packaging, and compliance certifications. The primary distinction is product status: the FSUSB30BQX is obsolete, while the FSUSB30L10X maintains active production status from Fairchild Semiconductor. This substitution ensures design continuity and supply chain reliability for applications requiring USB 2.0 switching functionality with DPDT topology in 14-DQFN packages.

Frequently Asked Questions (FAQ)

Q: Can the FSUSB30L10X be used as a direct replacement for the FSUSB30BQX?

A: Yes. Both components meet identical electrical and mechanical specifications, including DPDT switch topology, 10 Ohm maximum on-state resistance, 720 MHz bandwidth, 3V to 4.3V supply voltage, and 14-VFQFN exposed pad packaging. The FSUSB30L10X is actively produced, addressing the obsolescence of the FSUSB30BQX.

Q: Are there any package compatibility concerns when substituting these parts?

A: No. Both the FSUSB30BQX and FSUSB30L10X use identical 14-VFQFN surface mount packages with exposed pads. PCB footprints and assembly processes remain unchanged.

Q: Do the supply voltage requirements differ between these components?

A: No. Both components operate within the same 3V to 4.3V single supply voltage range, ensuring compatibility with existing power distribution designs.

Q: What compliance certifications apply to both parts?

A: Both components carry identical ECCN (EAR99) and HTSUS (8542.39.0001) classifications, maintaining regulatory compliance across substitution.

Q: Is the FSUSB30L10X suitable for USB 2.0 applications?

A: Yes. The FSUSB30L10X supports USB 2.0 protocol with Break-Before-Make switching functionality and 720 MHz bandwidth, meeting all high-speed USB switching requirements.