PS7241-1C-A Equivalent & Substitute Parts

Part Overview

The PS7241-1C-A is a solid-state relay manufactured by CEL, configured as SPST-NO/NC (1 Form A and B) in an 8-SOP surface mount package. This component operates across 0–400V load voltage with a maximum load current of 120 mA and on-state resistance of 30 Ohms maximum. The part is classified as obsolete, making identification of functionally equivalent alternatives necessary for ongoing design support and procurement planning.

Substiute Parts

PS7241-1C-A

CELIn Stock: 1175PS7241-1C-A Datasheet

Current PartRFQ

AQW610S

Panasonic Electric WorksIn Stock: 1444AQW610S Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the PS7241-1C-A is determined by the following critical parameters:

Circuit Configuration: The substitute must provide SPST-NO + SPST-NC (1 Form A and B) functionality to maintain electrical circuit compatibility.

Package and Mounting: The substitute must use an 8-SOP (0.173", 4.40mm Width) surface mount package with gull wing termination to ensure PCB layout and assembly compatibility.

Electrical Performance: The substitute must support the required load voltage range and load current specifications. The PS7241-1C-A operates at 0–400V load voltage with 120 mA maximum load current. Substitutes with lower maximum ratings remain acceptable if the application does not exceed those limits.

Input Voltage: The substitute must operate within the specified input voltage range (1.2VDC for the main part).

Output Type: The substitute must support both AC and DC output operation.

The AQW610S from Panasonic Electric Works meets these substitution criteria through identical circuit configuration, package geometry, and compatible electrical specifications.

Parameter Comparison

Engineering Selection Recommendations

The PS7241-1C-A is classified as obsolete, necessitating transition to active alternatives for new designs and ongoing procurement. The AQW610S serves as a direct functional equivalent with the following considerations:

Electrical Compatibility: The AQW610S operates within a reduced load voltage range (0–350V versus 0–400V) and supports a lower maximum load current (100 mA versus 120 mA). Selection of the AQW610S is appropriate for applications operating within these reduced specifications.

Compliance Status: The AQW610S is ROHS3 compliant and REACH unaffected, providing regulatory advantages over the PS7241-1C-A, which is REACH affected. This status supports long-term supply chain sustainability and regulatory alignment.

Product Availability: The AQW610S maintains active product status with documented inventory availability, ensuring reliable procurement for current and future production requirements.

Physical Compatibility: Identical package geometry and termination style ensure direct PCB layout compatibility without redesign.

Frequently Asked Questions (FAQ)

Q: Can the AQW610S directly replace the PS7241-1C-A in existing designs?

A: Direct replacement is possible if the application operates within the AQW610S electrical specifications: load voltage not exceeding 350V and load current not exceeding 100 mA. The identical 8-SOP package and gull wing termination ensure physical compatibility without PCB modification.

Q: What is the primary difference between these two relays?

A: The AQW610S operates at a reduced maximum load voltage (350V versus 400V) and lower maximum load current (100 mA versus 120 mA). Both components share identical circuit configuration (SPST-NO + SPST-NC) and package geometry.

Q: Why is the PS7241-1C-A classified as obsolete?

A: Obsolete status indicates the manufacturer has discontinued production. The AQW610S represents the active equivalent from Panasonic Electric Works.

Q: Are there any compliance differences between these parts?

A: The AQW610S is ROHS3 compliant and REACH unaffected, whereas the PS7241-1C-A is REACH affected. For applications subject to regulatory compliance requirements, the AQW610S provides superior compliance status.

Q: What input voltage is required for the AQW610S?

A: The AQW610S requires 1.14VDC input voltage, compared to 1.2VDC for the PS7241-1C-A. Both values are within typical control circuit specifications.

Q: Does the AQW610S support both AC and DC output operation?

A: Yes, the AQW610S supports both AC and DC output operation, matching the PS7241-1C-A functionality.

Q: What is the on-state resistance of the AQW610S?

A: The AQW610S has a maximum on-state resistance of 25 Ohms, compared to 30 Ohms for the PS7241-1C-A. Lower on-state resistance reduces power dissipation during operation.