PAA190 Solid State Relay - Equivalent & Substitute Parts

Part Overview

The PAA190 is an active solid state relay (SSR) manufactured by IXYS Integrated Circuits Division, configured as a SPST-NO (Single Pole Single Throw - Normally Open) relay with dual channels in an 8-DIP package. This component is designed for AC and DC load switching applications with a maximum load voltage of 400V and 150mA current capacity. The part is ROHS3 compliant and carries unlimited moisture sensitivity rating (MSL 1), making it suitable for standard industrial and commercial applications. Equivalent parts are identified based on matching package geometry, circuit configuration, and compatible electrical operating parameters.

Substiute Parts

PAA190

IXYS Integrated Circuits DivisionIn Stock: 1947PAA190 Datasheet

Current PartRFQ

LH1520AB

Vishay Semiconductor Opto DivisionIn Stock: 7410LH1520AB Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

The LH1520AB from Vishay Semiconductor Opto Division qualifies as a substitute for the PAA190 based on the following substitution criteria:

Matching Parameters:

• Package geometry: 8-DIP (0.300", 7.62mm) - identical footprint and pin spacing
• Circuit configuration: SPST-NO (1 Form A) x 2 - same relay topology and channel count
• Output type: AC, DC - compatible load switching capability
• Mounting type: Through Hole with PC Pin termination - direct PCB compatibility
• RoHS Status: ROHS3 Compliant - equivalent environmental compliance
• Moisture Sensitivity Level: MSL 1 (Unlimited) - same handling requirements
• Product Status: Active - current manufacturing availability

Compatible Operating Range:

• Input voltage: 1.26VDC (LH1520AB) vs. 1.2VDC (PAA190) - within acceptable tolerance
• Load voltage: 0 V ~ 350 V (LH1520AB) vs. 0 V ~ 400 V (PAA190) - subset compatibility
• Load current: 110 mA (LH1520AB) vs. 150 mA (PAA190) - reduced capacity
• On-state resistance: 20 Ohms (LH1520AB) vs. 22 Ohms (PAA190) - improved performance

Parameter Comparison

Engineering Selection Recommendations

The LH1520AB is a direct substitute for the PAA190 in applications where the load voltage does not exceed 350V and the load current requirement does not exceed 110mA. Both components are ROHS3 compliant and carry identical moisture sensitivity ratings, ensuring equivalent environmental compliance and handling requirements for standard industrial applications.

Selection of the LH1520AB over the PAA190 is appropriate when:

• Maximum load voltage in the application is 350V or lower
• Maximum load current requirement is 110mA or lower
• The lower on-state resistance (20 Ohms vs. 22 Ohms) provides operational benefit
• Vishay component availability or supply chain preference is a factor

The PAA190 remains the required choice when:

• Load voltage exceeds 350V up to 400V
• Load current exceeds 110mA up to 150mA
• IXYS component specification is mandated by design or procurement requirements

Both components share identical package geometry, circuit topology, and compliance certifications, ensuring direct PCB compatibility and equivalent handling procedures.

Frequently Asked Questions (FAQ)

Q: Can the LH1520AB replace the PAA190 in all applications?

A: No. The LH1520AB has lower maximum ratings for load voltage (350V vs. 400V) and load current (110mA vs. 150mA). Substitution is valid only when application requirements fall within the LH1520AB's electrical specifications.

Q: Are the packages physically identical?

A: Yes. Both the PAA190 and LH1520AB use the 8-DIP (0.300", 7.62mm) package with PC Pin termination, enabling direct PCB footprint compatibility without layout modifications.

Q: Do both relays support AC and DC switching?

A: Yes. Both the PAA190 and LH1520AB are rated for AC and DC load switching, providing equivalent output type capability.

Q: What is the difference in input voltage requirements?

A: The PAA190 requires 1.2VDC input, while the LH1520AB requires 1.26VDC input. This 0.06V difference is within acceptable tolerance for standard logic-level control circuits.

Q: How do the on-state resistance values compare?

A: The LH1520AB has a lower maximum on-state resistance (20 Ohms) compared to the PAA190 (22 Ohms), resulting in reduced power dissipation and improved thermal performance in the substitute component.

Q: Are both components RoHS compliant?

A: Yes. Both the PAA190 and LH1520AB are ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity rating, ensuring equivalent environmental compliance and standard handling procedures.

Q: What is the primary limitation of using the LH1520AB as a substitute?

A: The LH1520AB has reduced maximum load voltage (350V vs. 400V) and load current (110mA vs. 150mA) ratings. Applications requiring the full 400V or 150mA capability must use the PAA190.