FSA1256L8X_F113 Equivalent & Substitute Parts

Part Overview

The FSA1256L8X_F113 is a 2-circuit IC switch with SPST-NO (Single Pole Single Throw - Normally Open) configuration manufactured by onsemi. This component operates as a 1:1 multiplexer/demultiplexer with 1.15Ohm on-state resistance and is housed in an 8-MicroPak™ surface mount package. The part is classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing design support and procurement continuity.

Substiute Parts

FSA1256L8X_F113

onsemiIn Stock: 1071FSA1256L8X_F113 Datasheet

Current PartRFQ

FSA1256L8X

onsemiIn Stock: 50289FSA1256L8X Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the FSA1256L8X_F113 is determined by strict alignment with the following critical parameters:

• Switch circuit topology: SPST - NO configuration
• Circuit count: 2 circuits minimum
• Multiplexer ratio: 1:1
• On-state resistance: 1.15Ohm maximum
• Supply voltage compatibility: 1.65V ~ 5.5V range
• Package type: 8-UFQFN (8-MicroPak™) surface mount
• Operating temperature range: -40°C ~ 85°C minimum

The direct substitute FSA1256L8X shares identical electrical specifications and packaging with the main part number, differing only in packaging format (Cut Tape and Digi-Reel® availability). Additional cross-reference parts TS5A2066DCTR and NX3L2T66GM,125 are listed as functional alternatives within the onsemi and NXP product families, subject to verification of equivalent parameter compliance.

Parameter Comparison

Engineering Selection Recommendations

The FSA1256L8X serves as the primary direct substitute for FSA1256L8X_F113, offering identical electrical and mechanical specifications with the distinction of alternative packaging formats (Cut Tape and Digi-Reel® availability). Both parts carry obsolete product status, requiring procurement planning for long-term availability.

The FSA1256L8X maintains REACH Unaffected and EAR99 ECCN classifications consistent with the original part. RoHS3 compliance is documented for the FSA1256L8X variant, providing regulatory alignment for applications subject to hazardous substance restrictions.

Cross-reference alternatives TS5A2066DCTR and NX3L2T66GM,125 are identified within the substitute list but require detailed datasheet comparison to confirm parameter equivalence across all electrical and thermal specifications before implementation in production designs.

Frequently Asked Questions (FAQ)

Q: Can FSA1256L8X directly replace FSA1256L8X_F113 in existing designs?

A: Yes. FSA1256L8X provides identical electrical specifications, on-state resistance, switching characteristics, and 8-UFQFN package configuration. The difference is packaging format (Cut Tape and Digi-Reel® versus the original format). No circuit redesign is required.

Q: What makes a part a valid substitute for FSA1256L8X_F113?

A: Valid substitutes must maintain SPST-NO switch topology, 2-circuit configuration, 1:1 multiplexer ratio, 1.15Ohm maximum on-state resistance, 1.65V ~ 5.5V supply voltage range, 8-UFQFN package type, and -40°C ~ 85°C operating temperature range.

Q: Why is product status (Obsolete) significant for substitution?

A: Obsolete status indicates the part is no longer manufactured. Identifying equivalent alternatives ensures design continuity and prevents supply chain disruption. Substitute parts with active production status provide better long-term availability.

Q: Are TS5A2066DCTR and NX3L2T66GM,125 direct pin-for-pin replacements?

A: These parts are listed as cross-references but require verification of pinout compatibility, package dimensions, and all electrical parameters against the original FSA1256L8X_F113 datasheet before implementation.

Q: What compliance certifications apply to FSA1256L8X substitutes?

A: FSA1256L8X maintains REACH Unaffected status and EAR99 ECCN classification. RoHS3 compliance is documented for this variant. Verify compliance requirements for your specific application and regulatory jurisdiction.

Q: Does package format affect electrical performance?

A: No. FSA1256L8X in Cut Tape and Digi-Reel® formats maintains identical electrical specifications to the original part. Package format differences relate only to supply and handling methods, not component performance.