FSA2467UMX Equivalent & Substitute Parts

Part Overview

The FSA2467UMX is a 2-circuit DPDT (Double Pole Double Throw) IC switch manufactured by onsemi, housed in a 16-UMLP surface mount package with 400Ohm typical on-state resistance. This component is classified as obsolete, making equivalent and substitute parts necessary for new designs and ongoing production support. The part operates across a single supply voltage range of 1.65V to 4.3V and is suitable for high-speed switching applications requiring low crosstalk performance.

Substiute Parts

FSA2467UMX

onsemiIn Stock: 17879FSA2467UMX Datasheet

Current PartRFQ

FSA2466UMX

onsemiIn Stock: 36264FSA2466UMX Datasheet

SimilarRFQ

NLAS3899BMNTBG

onsemiIn Stock: 18110NLAS3899BMNTBG Datasheet

SimilarRFQ

DG2599DN-T1-GE4

Vishay SiliconixIn Stock: 3726DG2599DN-T1-GE4 Datasheet

SimilarRFQ

NX3L2467GU,115

NXP USA Inc.In Stock: 3901NX3L2467GU,115 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the FSA2467UMX is determined by the following critical parameters:

Primary Compatibility Criteria:

• Switch circuit configuration (DPDT required)
• Multiplexer/demultiplexer circuit topology (2:2 preferred for direct replacement)
• Package footprint compatibility (16-pin QFN variants with 1.8x2.6mm dimensions)
• Supply voltage range overlap (minimum 1.65V to 4.3V compatibility)
• Operating temperature range (-40°C to 85°C minimum)

Secondary Performance Considerations:

• On-state resistance (400Ohm baseline; lower values indicate improved performance)
• Switch timing characteristics (Ton/Toff specifications)
• Crosstalk performance (-75dB baseline)
• Leakage current specifications (10nA baseline)

The substitute parts listed below meet the primary compatibility criteria and maintain functional equivalence within the specified electrical and mechanical parameters.

Parameter Comparison

Engineering Selection Recommendations

FSA2466UMX (onsemi) — Recommended primary substitute. Active product status ensures long-term availability. Maintains identical 2:2 multiplexer topology and 16-UFQFN package footprint. Offers superior performance with 1.6Ohm on-state resistance, improved bandwidth (240MHz), and enhanced crosstalk performance (-90dB). Supply voltage range extends to 4.45V. Identical switch timing and leakage current specifications ensure direct functional compatibility.

DG2599DN-T1-GE4 (Vishay Siliconix) — Alternative substitute with active product status. Provides lowest on-state resistance (1.1Ohm) and superior crosstalk performance (-110dB @ 1MHz). Extended supply voltage range to 5V. Package footprint compatible (16-WFQFN, 1.8x2.6mm). Switch timing is slower (90ns/70ns) compared to FSA2467UMX. Suitable for applications prioritizing low resistance and crosstalk performance over switching speed.

NX3L2467GU,115 (NXP USA Inc.) — Alternative substitute with active product status. Lowest on-state resistance (750mOhm) and fastest switch-off time (20ns). Extended operating temperature range to 125°C. Multiplexer topology differs (2:1 instead of 2:1), requiring circuit-level evaluation. Package footprint compatible (16-XFQFN, 1.8x2.6mm). Suitable for high-temperature applications and designs requiring minimal on-state resistance.

NLAS3899BMNTBG (onsemi) — Obsolete product status limits suitability for new designs. Included for reference in legacy system maintenance only. Higher leakage current (300nA) and charge injection (111pC) exceed FSA2467UMX specifications. Channel-to-channel matching degraded (700mOhm). Package footprint compatible (16-WFQFN, 1.8x2.6mm).

Frequently Asked Questions (FAQ)

Q: Can FSA2466UMX directly replace FSA2467UMX in existing designs?

A: Yes. FSA2466UMX maintains identical switch circuit configuration (DPDT), multiplexer topology (2:2), package footprint (16-UFQFN, 1.8x2.6mm), and operating temperature range (-40°C to 85°C). Supply voltage compatibility is maintained (1.65V to 4.45V encompasses the original 1.65V to 4.3V range). Pin-for-pin compatibility is confirmed. Performance improvements include lower on-state resistance and enhanced crosstalk rejection.

Q: What are the package compatibility considerations?

A: All substitute parts use 16-pin QFN packages with identical 1.8x2.6mm footprint dimensions. Package variants include UFQFN, WFQFN, and XFQFN designations, which differ in lead frame design but maintain PCB footprint compatibility. Verify datasheet land pattern specifications for your specific PCB layout tool before finalizing designs.

Q: Which substitute offers the best performance improvement?

A: DG2599DN-T1-GE4 provides the lowest on-state resistance (1.1Ohm) and superior crosstalk performance (-110dB @ 1MHz). NX3L2467GU,115 offers the lowest on-state resistance (750mOhm) and fastest switch-off time (20ns). Selection depends on application priorities: low resistance, crosstalk performance, switching speed, or operating temperature range.

Q: Are all substitutes RoHS3 compliant?

A: Yes. All listed substitute parts maintain ROHS3 compliance and MSL rating 1 (Unlimited), matching the original FSA2467UMX specifications. All parts are REACH unaffected and classified under ECCN EAR99.

Q: What is the impact of different multiplexer topologies (2:2 vs. 2:1)?

A: The FSA2467UMX and most substitutes use 2:2 topology (2 independent switches, each with 2 selectable inputs). NX3L2467GU,115 uses 2:1 topology (2 independent switches, each with 1 selectable input). This difference requires circuit-level evaluation to confirm functional equivalence in your specific application. Consult detailed datasheets for switch configuration diagrams.

Q: Which substitute is recommended for new production designs?

A: FSA2466UMX is the recommended primary choice due to active product status, identical package and topology, and superior performance characteristics. DG2599DN-T1-GE4 and NX3L2467GU,115 are viable alternatives if specific performance requirements (crosstalk, resistance, temperature range) justify their selection.