PS7241-2A-F3-A Equivalent & Substitute Parts

Part Overview

The PS7241-2A-F3-A is a solid-state relay (SSR) manufactured by CEL, configured as a dual SPST-NO (1 Form A) switch in an 8-SOP surface mount package. This component operates with a 1.2VDC input signal and controls AC/DC loads up to 400V at 120mA maximum load current. The part is classified as obsolete, necessitating identification of active equivalent components that maintain functional and electrical compatibility for new designs or production continuity.

Substiute Parts

PS7241-2A-F3-A

CELIn Stock: 1434PS7241-2A-F3-A Datasheet

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AQW214SZ

Panasonic Electric WorksIn Stock: 15187AQW214SZ Datasheet

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TLP206GA(F)

Toshiba Semiconductor and StorageIn Stock: 733TLP206GA(F) Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the PS7241-2A-F3-A is determined by strict alignment with the following critical parameters:

Mandatory Compatibility Criteria:

• Circuit configuration: SPST-NO (1 Form A) x 2
• Load voltage range: 0V ~ 400V
• Output type: AC and DC capable
• Package type: 8-SOP with gull wing termination
• Mounting: Surface mount
• Input voltage: Within acceptable operating range (1.14VDC to 1.2VDC)

Allowable Parameter Variations:

• Load current: Substitute must support minimum 120mA (equal or greater)
• On-state resistance: Substitute must not exceed 50 Ohms maximum
• Product status: Active status preferred for production continuity

The identified substitutes meet these criteria while accommodating minor electrical parameter variations that remain within functional tolerance for this component category.

Parameter Comparison

Engineering Selection Recommendations

TLP206GA(F) (Toshiba Semiconductor and Storage) is the primary substitute for PS7241-2A-F3-A. This component matches the load current specification (120mA), maintains identical load voltage range (0V ~ 400V), and provides equivalent on-state resistance performance (35 Ohms vs. 30 Ohms maximum). The TLP206GA(F) is active in production status, ROHS3 compliant, and available in standard packaging. Input voltage (1.15VDC) aligns within acceptable operating tolerance.

AQW214SZ (Panasonic Electric Works) serves as a secondary substitute when load current requirements can be reduced to 80mA. This PhotoMOS™ component maintains full voltage compatibility and gull wing termination. The higher on-state resistance (50 Ohms maximum) remains acceptable for applications with lower impedance sensitivity. AQW214SZ is active in production, ROHS3 compliant, and offers higher inventory availability (15,100 units). Input voltage (1.14VDC) operates within functional range.

Both substitutes share identical circuit configuration, load voltage range, output type capability, and surface mount gull wing termination. Selection between TLP206GA(F) and AQW214SZ depends on specific load current requirements and on-state resistance constraints of the target application.

Frequently Asked Questions (FAQ)

Q: Can AQW214SZ replace PS7241-2A-F3-A in all applications?

A: AQW214SZ is compatible when the application load current requirement does not exceed 80mA. The PS7241-2A-F3-A is rated for 120mA maximum load current. If the circuit requires full 120mA capacity, AQW214SZ is not suitable. For applications operating below 80mA, AQW214SZ provides full functional equivalence.

Q: What is the significance of the on-state resistance difference between these parts?

A: On-state resistance affects voltage drop across the relay contacts during load conduction. PS7241-2A-F3-A specifies 30 Ohms maximum, TLP206GA(F) specifies 35 Ohms, and AQW214SZ specifies 50 Ohms. Lower resistance reduces power dissipation and heat generation. Applications sensitive to voltage drop or thermal performance should prioritize TLP206GA(F) over AQW214SZ.

Q: Are the input voltage differences between 1.2VDC, 1.15VDC, and 1.14VDC significant?

A: These input voltage specifications represent the nominal trigger voltage for the solid-state relay. The differences (0.05VDC to 0.06VDC) are within standard operating tolerance for this component category and do not affect substitution compatibility. All three parts operate reliably with standard logic-level control signals.

Q: Is package compatibility guaranteed between 8-SOP and 8-SMD designations?

A: Both designations refer to 8-pin surface mount packages with gull wing termination and identical 0.173" (4.40mm) width. Pin pitch and footprint are compatible for PCB assembly. TLP206GA(F) uses 8-SMD designation while PS7241-2A-F3-A and AQW214SZ use 8-SOP designation; these are functionally equivalent for surface mount applications.

Q: Why is product status (Active vs. Obsolete) important for component selection?

A: Active status indicates ongoing manufacturing and supply availability. TLP206GA(F) and AQW214SZ are active products with established supply chains. PS7241-2A-F3-A is obsolete, meaning production has ceased and inventory is limited. For new designs or long-term production, active substitutes ensure component availability and consistent manufacturing specifications.

Q: What does ROHS3 compliance mean for these substitutes?

A: ROHS3 compliance certifies that the component meets Restriction of Hazardous Substances Directive requirements, restricting lead and other hazardous materials. Both TLP206GA(F) and AQW214SZ are ROHS3 compliant, making them suitable for applications requiring environmental and regulatory compliance. This is particularly important for products sold in European markets or subject to environmental regulations.