PS7141-2A-A Solid State Relay - Equivalent & Substitute Parts

Part Overview

The PS7141-2A-A is a solid-state SPST-NO relay manufactured by CEL, configured as two independent Form A switches in an 8-DIP through-hole package. This component provides galvanic isolation for AC and DC loads up to 400V with a maximum load current of 150mA. The part is classified as obsolete, making equivalent substitutes necessary for new designs and component sourcing.

Substiute Parts

PS7141-2A-A

CELIn Stock: 861PS7141-2A-A Datasheet

Current PartRFQ

AQW210

Panasonic Electric WorksIn Stock: 6061AQW210 Datasheet

SimilarRFQ

AQW214

Panasonic Electric WorksIn Stock: 11708AQW214 Datasheet

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AQW214EH

Panasonic Electric WorksIn Stock: 16484AQW214EH Datasheet

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LAA120L

IXYS Integrated Circuits DivisionIn Stock: 2391LAA120L Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the PS7141-2A-A is determined by the following critical parameters: identical circuit configuration (SPST-NO Form A x 2), identical package type (8-DIP 0.300"), through-hole mounting compatibility, and compatible voltage and current ratings. Substitutes must support the input voltage of 1.2VDC or higher, output voltage up to 400V, and load current of at least 150mA. On-state resistance and input voltage thresholds serve as secondary selection criteria for performance optimization.

All qualified substitutes in this reference maintain the same physical footprint, pinout compatibility, and functional characteristics necessary for direct board-level replacement.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitute - Full Compatibility: The LAA120L offers complete electrical and mechanical compatibility with the PS7141-2A-A. Both components share identical input voltage (1.2VDC), load current (150mA), and physical footprint. The LAA120L exhibits superior on-state resistance (25 Ohms versus 30 Ohms), reducing power dissipation. This part maintains active product status with ROHS3 compliance and unlimited moisture sensitivity rating.

Secondary Substitutes - Load Voltage Constraints: The AQW214 and AQW214EH both support the full 400V load voltage range matching the PS7141-2A-A. However, these parts are rated for 100mA maximum load current, making them suitable only for applications requiring less than 150mA. The AQW214EH features lower on-state resistance (35 Ohms) compared to AQW214 (50 Ohms). Both maintain active status with ROHS3 compliance.

Voltage-Limited Substitute: The AQW210 supports only 350V maximum load voltage, limiting its use to applications with lower voltage requirements. Its 120mA load current rating falls below the original 150mA specification. Active product status with ROHS3 compliance is maintained.

Frequently Asked Questions (FAQ)

Q: Can the LAA120L directly replace the PS7141-2A-A in all applications? A: The LAA120L provides direct replacement for applications operating at or below 250V load voltage, with load currents up to 150mA. Applications requiring the full 400V load voltage capability must verify that the 250V rating is acceptable for their specific circuit.

Q: What is the primary limitation of AQW210 and AQW214 substitutes? A: The AQW210 is limited to 350V maximum load voltage. The AQW214 series is limited to 100mA load current. Selection depends on whether your application's voltage and current requirements fall within these reduced specifications.

Q: Are all substitutes compatible with the original 8-DIP package footprint? A: All four substitute parts share the identical 8-DIP (0.300", 7.62mm) package with through-hole PC pin termination, ensuring direct board-level compatibility without layout modifications.

Q: Which substitute offers the best performance characteristics? A: The LAA120L matches the original PS7141-2A-A across all critical parameters and features the lowest on-state resistance (25 Ohms), resulting in minimal power dissipation and improved thermal performance.

Q: Do the substitutes meet current compliance standards? A: The AQW210, AQW214, AQW214EH, and LAA120L all maintain active product status. Panasonic substitutes hold ROHS3 compliance. The LAA120L maintains ROHS3 compliance with unlimited moisture sensitivity.