PAA110LS Equivalent & Substitute Parts

Part Overview

The PAA110LS is a solid-state relay (SSR) manufactured by IXYS Integrated Circuits Division, part of the OptoMOS® series. This SPST-NO (1 Form A) x 2 configuration operates as a surface-mount component in an 8-SMD package with a 0.300" (7.62mm) footprint. The device handles AC and DC loads up to 400V at 150mA with a maximum on-state resistance of 25 Ohms and requires 1.2VDC input. The PAA110LS maintains Active product status and is RoHS3 compliant. Equivalent and substitute parts are identified when electrical and mechanical parameters align within acceptable tolerances for the intended application, allowing for component sourcing flexibility and supply chain continuity.

Substiute Parts

PAA110LS

IXYS Integrated Circuits DivisionIn Stock: 1762PAA110LS Datasheet

Current PartRFQ

AQW210HLA

Panasonic Electric WorksIn Stock: 2379AQW210HLA Datasheet

MFR RecommendedRFQ

AQW254AZ

Panasonic Electric WorksIn Stock: 4172AQW254AZ Datasheet

MFR RecommendedRFQ

LH1520AAC

Vishay Semiconductor Opto DivisionIn Stock: 3204LH1520AAC Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the PAA110LS is determined by strict alignment of the following critical parameters:

Mandatory Matching Parameters:

• Circuit Configuration: SPST-NO (1 Form A) x 2
• Package / Case: 8-SMD (0.300", 7.62mm)
• Termination Style: Gull Wing
• Mounting Type: Surface Mount
• Output Type: AC, DC

Allowable Parameter Ranges for Substitution:

• Voltage - Input: 1.14VDC to 1.26VDC (±5% tolerance around 1.2VDC nominal)
• Voltage - Load: Minimum 350V to 400V (substitute must support at least the application requirement)
• Load Current: 110mA to 150mA (substitute must support the required load current)
• On-State Resistance (Max): 16 Ohms to 25 Ohms (lower resistance is acceptable; higher resistance may impact performance)

All three identified substitute parts meet these criteria and maintain Active product status with appropriate RoHS compliance certifications.

Parameter Comparison

Engineering Selection Recommendations

AQW254AZ (Panasonic Electric Works) is the primary substitute for applications requiring full voltage compatibility. This part matches the PAA110LS load voltage rating of 0–400V and offers superior on-state resistance at 16 Ohms compared to the original 25 Ohms, resulting in lower power dissipation. The AQW254AZ is ROHS3 compliant and maintains Active product status. Packaging is supplied as Tape & Reel (TR) rather than Tube.

AQW210HLA (Panasonic Electric Works) is suitable for applications with maximum load voltages of 350V or lower. This part maintains identical on-state resistance (25 Ohms) and is available in Tube packaging. RoHS compliance is confirmed, though not specifically ROHS3 designated.

LH1520AAC (Vishay Semiconductor Opto Division) is applicable for 350V maximum load voltage applications. This part provides on-state resistance of 20 Ohms and is ROHS3 compliant with Tube packaging. Input voltage tolerance is 1.26VDC, within acceptable range.

All three substitutes maintain Active product status and are suitable for direct PCB replacement given identical package geometry and termination style.

Frequently Asked Questions (FAQ)

Q: Can AQW210HLA or LH1520AAC be used in applications requiring 400V load voltage?

A: No. Both AQW210HLA and LH1520AAC are rated for maximum load voltages of 350V. Applications requiring 400V operation must use PAA110LS or AQW254AZ.

Q: What is the impact of lower load current ratings in substitute parts?

A: AQW210HLA and AQW254AZ are rated for 120mA, while LH1520AAC is rated for 110mA, compared to PAA110LS at 150mA. Substitutes must support the actual load current of the application. If the application requires 150mA, only PAA110LS can be used.

Q: Are all substitute parts pin-compatible with PAA110LS?

A: Yes. All substitute parts use identical 8-SMD (0.300", 7.62mm) package geometry with Gull Wing termination, enabling direct PCB replacement without layout modification.

Q: What is the difference between Tube and Tape & Reel packaging?

A: Tube packaging is suitable for manual handling and smaller production volumes. Tape & Reel (TR) packaging is optimized for automated assembly processes. AQW254AZ is supplied as Tape & Reel; PAA110LS, AQW210HLA, and LH1520AAC are supplied as Tube.

Q: Does lower on-state resistance in AQW254AZ affect circuit operation?

A: Lower on-state resistance (16 Ohms versus 25 Ohms) reduces power dissipation and heat generation during operation. This is a performance improvement and does not negatively affect circuit compatibility.

Q: Are all parts RoHS compliant?

A: Yes. PAA110LS, AQW254AZ, and LH1520AAC are ROHS3 compliant. AQW210HLA is RoHS compliant. All parts meet environmental regulatory requirements.