LAA110LS Solid State Relay - Equivalent & Substitute Parts

Part Overview

The LAA110LS is an active solid state relay (SSR) manufactured by IXYS Integrated Circuits Division, designed for low-voltage control applications requiring AC/DC load switching. This SPST-NO (1 Form A) configuration with dual channels operates across 0-350V load voltage with 120mA maximum load current. The part is packaged in an 8-SMD surface mount format with gull wing termination, suitable for automated assembly processes. Finding equivalent substitute parts ensures design flexibility, supply chain continuity, and access to alternative inventory sources while maintaining identical electrical and mechanical performance.

Substiute Parts

LAA110LS

IXYS Integrated Circuits DivisionIn Stock: 839LAA110LS Datasheet

Current PartRFQ

LAA110STR

LittelfuseIn Stock: 2140LAA110STR Datasheet

MFR RecommendedRFQ

AQW210HLA

Panasonic Electric WorksIn Stock: 2379AQW210HLA Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the LAA110LS are qualified based on strict electrical and mechanical parameter matching:

Critical Matching Parameters:

• Circuit configuration: SPST-NO (1 Form A) x 2
• Load voltage range: 0 V ~ 350 V
• Load current: 120 mA
• Package / Case: 8-SMD (0.300", 7.62mm)
• Termination style: Gull Wing
• Mounting type: Surface Mount
• Output type: AC, DC

Allowable Variations:

• Input voltage: Within compatible control signal levels (1.14VDC to 1.2VDC)
• On-state resistance: Up to 35 Ohms maximum
• RoHS compliance status: ROHS3 or equivalent RoHS Compliant
• Moisture sensitivity level: Not applicable or MSL 1

The following parts meet all substitution criteria and are electrically and mechanically interchangeable with the LAA110LS.

Parameter Comparison

Engineering Selection Recommendations

All three parts—LAA110LS, LAA110STR, and AQW210HLA—are active products with current manufacturing status and full RoHS compliance. Selection between these parts is based on availability, packaging format, and on-state resistance performance requirements.

LAA110LS (IXYS): Primary part with tube packaging. Suitable for applications where standard on-state resistance of 35 Ohms is acceptable.

LAA110STR (Littelfuse): Direct electrical equivalent with identical specifications. Available in cut tape and digi-reel packaging formats, offering supply chain flexibility. Recommended for high-volume production requiring reel packaging.

AQW210HLA (Panasonic): Electrically compatible with superior on-state resistance performance (25 Ohms vs. 35 Ohms maximum). Lower input voltage requirement (1.14VDC) provides additional design margin. Tube packaging. Suitable for applications requiring lower power dissipation or tighter resistance tolerances.

All parts share identical load voltage range, load current capacity, circuit configuration, and physical package dimensions, ensuring direct PCB-level compatibility without layout modifications.

Frequently Asked Questions (FAQ)

Q: Can LAA110STR be used as a direct replacement for LAA110LS? A: Yes. LAA110STR is electrically and mechanically identical to LAA110LS. Both parts share the same base product number (LAA110), circuit configuration, load specifications, and 8-SMD package format. The primary difference is packaging format (cut tape/digi-reel vs. tube) and manufacturer (Littelfuse vs. IXYS).

Q: What are the differences between AQW210HLA and LAA110LS? A: AQW210HLA is electrically compatible with LAA110LS across all critical parameters: load voltage range, load current, circuit configuration, and package format. The AQW210HLA features lower on-state resistance (25 Ohms maximum vs. 35 Ohms) and slightly lower input voltage requirement (1.14VDC vs. 1.2VDC). Both are active products with full RoHS compliance.

Q: Are these parts pin-compatible? A: Yes. All three parts use identical 8-SMD (0.300", 7.62mm) package format with gull wing termination. PCB footprints are directly compatible without modification.

Q: Which part should I select for new designs? A: Selection depends on supply availability and performance requirements. For standard applications, any of the three parts is suitable. For applications requiring lower power dissipation, AQW210HLA offers superior on-state resistance performance. For high-volume production, LAA110STR offers reel packaging options.

Q: Are moisture sensitivity levels a concern for these parts? A: LAA110LS and LAA110STR have MSL 1 (Unlimited), indicating no moisture sensitivity restrictions. AQW210HLA has MSL Not Applicable. All parts are suitable for standard storage and handling conditions without special moisture control requirements.

Q: Do all parts meet the same compliance standards? A: Yes. All three parts are RoHS compliant (ROHS3 or equivalent), REACH Unaffected, and classified under ECCN EAR99. All parts carry identical HTSUS classification (8536.41.0030).