PAA190S Solid State Relay - Equivalent & Substitute Parts

Part Overview

The PAA190S is an active SPST-NO (Single Pole Single Throw - Normally Open) solid state relay manufactured by IXYS Integrated Circuits Division. This OptoMOS® series component operates across 0-400V load voltage with 150mA maximum load current and features dual Form A switching circuits in an 8-SMD surface mount package. The part is ROHS3 compliant and carries unlimited moisture sensitivity rating. Substitute parts are identified when inventory constraints, lead time requirements, or application-specific parameter tolerances necessitate alternative component selection within the same functional category.

Substiute Parts

PAA190S

IXYS Integrated Circuits DivisionIn Stock: 979PAA190S Datasheet

Current PartRFQ

LH1520AAC

Vishay Semiconductor Opto DivisionIn Stock: 3204LH1520AAC Datasheet

MFR RecommendedRFQ

LH1526AAC

Vishay Semiconductor Opto DivisionIn Stock: 1287LH1526AAC Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the PAA190S is determined by strict alignment of the following critical parameters:

• Circuit configuration: SPST-NO (1 Form A) x 2 dual switching circuits
• Package type: 8-SMD (0.300", 7.62mm) with Gull Wing termination
• Mounting method: Surface Mount
• Output capability: AC and DC load switching
• Load voltage range: Minimum 0-400V or higher
• Load current capacity: Minimum 150mA or higher
• On-state resistance: Maximum 22 Ohms or lower
• Input voltage: Compatible with 1.2VDC control signal
• Compliance: ROHS3 and REACH Unaffected status

The identified substitute parts (LH1520AAC and LH1526AAC) maintain identical package geometry, circuit topology, and mounting characteristics. Electrical parameter variations within acceptable tolerance ranges permit direct substitution in applications where the specified load voltage and current requirements do not exceed the substitute part ratings.

Parameter Comparison

Engineering Selection Recommendations

All three components maintain Active product status with ROHS3 compliance and REACH Unaffected designation, confirming regulatory alignment for current manufacturing and deployment.

LH1520AAC operates at reduced maximum load current (110mA versus 150mA) and lower maximum load voltage (350V versus 400V). Selection of this substitute requires confirmation that application load current does not exceed 110mA and load voltage remains within 0-350V range.

LH1526AAC operates at reduced maximum load current (100mA versus 150mA) while maintaining the full 0-400V load voltage range. Selection of this substitute requires confirmation that application load current does not exceed 100mA. On-state resistance is 25 Ohms, representing a 3 Ohm increase from the main part specification.

Input voltage tolerance across all three parts (1.15VDC to 1.26VDC) remains within typical control signal margins for solid state relay applications.

Frequently Asked Questions (FAQ)

Q: Can LH1520AAC replace PAA190S in all applications?

A: LH1520AAC substitution is limited to applications where load current does not exceed 110mA and load voltage remains within 0-350V. Applications requiring the full 150mA capacity or load voltages above 350V require alternative selection.

Q: What is the primary difference between LH1520AAC and LH1526AAC?

A: LH1520AAC supports 350V maximum load voltage with 110mA capacity. LH1526AAC supports 400V maximum load voltage with 100mA capacity. Selection depends on whether the application prioritizes voltage range or current capacity.

Q: Are all three parts pin-compatible?

A: Yes. All three components share identical 8-SMD (0.300", 7.62mm) package geometry with Gull Wing termination, enabling direct PCB footprint compatibility.

Q: Do input voltage differences affect circuit design?

A: Input voltage specifications (1.2VDC, 1.15VDC, 1.26VDC) represent nominal control signal levels. Standard control circuit designs accommodate this range without modification.

Q: Are there compliance or certification differences between the parts?

A: No. All three components carry identical ROHS3 compliance, REACH Unaffected status, and Moisture Sensitivity Level 1 (Unlimited) ratings.

Q: Which substitute should be selected for new designs?

A: Component selection depends on application load requirements. If load current exceeds 100mA or load voltage exceeds 350V, the PAA190S main part is required. If application load current is 100mA or less and load voltage is 350V or less, either substitute is acceptable based on voltage or current priority.