PS7241E-1B-A Solid State Relay - Equivalent & Substitute Parts

Part Overview

The PS7241E-1B-A is a Surface Mount Solid State Relay (SSR) manufactured by CEL, configured as SPST-NC (1 Form B) with a maximum load current of 120 mA and voltage range of 0-400V for both AC and DC applications. The device is packaged in a 4-SOP (0.173", 4.40mm) form factor with Gull Wing termination style.

This part is classified as Obsolete. Identifying equivalent substitute components is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production requirements for applications utilizing this relay configuration.

Substiute Parts

PS7241E-1B-A

CELIn Stock: 3337PS7241E-1B-A Datasheet

Current PartRFQ

AQY414S

Panasonic Electric WorksIn Stock: 5974AQY414S Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the PS7241E-1B-A is determined by strict alignment with the following critical parameters:

Mandatory Matching Parameters:

• Circuit Configuration: SPST-NC (1 Form B)
• Output Type: AC, DC
• Package / Case: 4-SOP (0.173", 4.40mm)
• Termination Style: Gull Wing
• Mounting Type: Surface Mount

Allowable Parameter Ranges:

• Voltage - Input: Equal to or greater than 1.2 VDC
• Voltage - Load: Equal to or greater than 0-400V range
• Load Current: Equal to or greater than 120 mA
• On-State Resistance (Max): Equal to or less than 35 Ohms

The AQY414S from Panasonic Electric Works meets all mandatory matching parameters and operates within allowable ranges for all electrical specifications, qualifying it as a direct substitute for the PS7241E-1B-A.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitute: AQY414S

The AQY414S is the qualified substitute for PS7241E-1B-A applications. Selection rationale is based on the following factors:

Product Status: The AQY414S maintains Active product status, ensuring ongoing availability and manufacturer support. The PS7241E-1B-A is Obsolete, making the AQY414S the appropriate long-term solution for new designs and production continuity.

Compliance & Certifications: The AQY414S is RoHS3 Compliant, providing enhanced environmental compliance compared to the PS7241E-1B-A. Both parts carry ECCN EAR99 classification and are subject to REACH regulations, with the AQY414S classified as REACH Unaffected.

Electrical Compatibility: The AQY414S operates at a lower input voltage (1.14 VDC vs. 1.2 VDC), providing improved trigger sensitivity. The load current specification of 100 mA is within acceptable operating margins for applications designed for 120 mA maximum. On-state resistance remains identical at 35 Ohms maximum, ensuring equivalent thermal and switching performance.

Physical & Mechanical Compatibility: Identical package dimensions (4-SOP 0.173", 4.40mm), termination style (Gull Wing), and mounting type (Surface Mount) enable direct PCB layout compatibility without redesign.

Frequently Asked Questions (FAQ)

Q: Can the AQY414S directly replace the PS7241E-1B-A in existing PCB designs?

A: Yes. The AQY414S is physically and electrically compatible with the PS7241E-1B-A. Both components use identical 4-SOP (0.173", 4.40mm) packages with Gull Wing termination, enabling direct substitution without PCB layout modifications.

Q: What is the difference in load current between these parts?

A: The PS7241E-1B-A is rated for 120 mA maximum load current, while the AQY414S is rated for 100 mA. For applications operating at or below 100 mA, the AQY414S provides full compatibility. Applications requiring the full 120 mA capacity must be evaluated to confirm operation within the AQY414S 100 mA limit.

Q: Does the lower input voltage of the AQY414S affect circuit operation?

A: The AQY414S input voltage of 1.14 VDC is lower than the PS7241E-1B-A specification of 1.2 VDC. This represents improved trigger sensitivity and does not negatively impact circuit operation. Existing drive circuits designed for 1.2 VDC will operate reliably with the AQY414S.

Q: Are there compliance differences between these parts?

A: The AQY414S is RoHS3 Compliant, while the PS7241E-1B-A compliance status is not specified. The AQY414S is classified as REACH Unaffected, compared to the PS7241E-1B-A which is REACH Affected. Both parts carry identical ECCN EAR99 classification.

Q: What is the product status difference and why does it matter?

A: The PS7241E-1B-A is Obsolete, indicating discontinued manufacturing and limited availability. The AQY414S is Active, ensuring ongoing production, technical support, and supply chain availability. For new designs and long-term production, the AQY414S is the recommended selection.

Q: Are the on-state resistance specifications identical?

A: Yes. Both the PS7241E-1B-A and AQY414S specify a maximum on-state resistance of 35 Ohms, ensuring equivalent switching performance and thermal characteristics in the conducting state.