PS7341L-1B-A Equivalent & Substitute Parts

Part Overview

The PS7341L-1B-A is a solid-state relay (SSR) manufactured by CEL, configured as a SPST-NC (1 Form B) device rated for 150 mA load current across 0–400 V AC/DC output. The device features surface mount packaging in a 6-SMD (0.300", 7.62mm) gull wing termination style. This part is classified as obsolete, necessitating identification of functionally equivalent alternatives for ongoing design support and procurement continuity.

Substiute Parts

PS7341L-1B-A

CELIn Stock: 4158PS7341L-1B-A Datasheet

Current PartRFQ

AQV414EHA

Panasonic Electric WorksIn Stock: 838AQV414EHA Datasheet

SimilarRFQ

AQV454HA

Panasonic Electric WorksIn Stock: 2357AQV454HA Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the PS7341L-1B-A is determined by strict alignment across the following critical parameters:

Circuit Configuration: All substitute parts must maintain SPST-NC (1 Form B) topology to preserve switching behavior and control logic compatibility.

Output Specifications: Load voltage range (0–400 V) and output type (AC/DC) must remain unchanged to ensure safe operation within the target application.

Load Current Rating: The substitute must support the required 150 mA load current without derating.

Mounting and Packaging: Surface mount configuration with 6-SMD (0.300", 7.62mm) gull wing termination ensures mechanical and electrical compatibility with existing PCB layouts.

Input Voltage: The control input voltage specification (1.2 VDC nominal) must be compatible with the substitute device's input requirements.

The identified substitute parts—AQV414EHA and AQV454HA—satisfy these core substitution criteria. Secondary parameters such as on-state resistance and product status inform selection priority but do not disqualify substitution eligibility.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitute: AQV454HA

The AQV454HA is the preferred substitute for the PS7341L-1B-A. This Panasonic Electric Works PhotoMOS™ AQV series device matches the 150 mA load current specification exactly and maintains all critical electrical and mechanical parameters. The AQV454HA carries active product status with ROHS3 compliance, ensuring long-term availability and regulatory alignment. The on-state resistance of 16 Ohms is superior to the original 30 Ohms specification, providing improved thermal performance. Input voltage compatibility (1.14 VDC vs. 1.2 VDC) is within acceptable tolerance for control circuit operation.

Secondary Substitute: AQV414EHA

The AQV414EHA serves as an alternative where load current requirements do not exceed 120 mA. This device maintains full compatibility across voltage, circuit configuration, and packaging parameters. The higher on-state resistance (50 Ohms) and reduced load current rating necessitate application-level verification that the 120 mA specification satisfies system requirements. Active product status and ROHS3 compliance support procurement continuity.

Both substitutes are available in active production status, eliminating the obsolescence risk associated with the PS7341L-1B-A.

Frequently Asked Questions (FAQ)

Q: Can the AQV414EHA replace the PS7341L-1B-A in all applications?

A: The AQV414EHA is compatible with applications where the load current requirement does not exceed 120 mA. The PS7341L-1B-A is rated for 150 mA; therefore, the AQV414EHA is suitable only for designs operating at or below 120 mA. All other electrical and mechanical parameters align with the original specification.

Q: What is the impact of on-state resistance differences between the main part and substitutes?

A: On-state resistance affects power dissipation and voltage drop across the relay contacts. The PS7341L-1B-A specifies 30 Ohms maximum. The AQV454HA (16 Ohms) provides lower dissipation, while the AQV414EHA (50 Ohms) results in higher dissipation. For 150 mA applications, the AQV454HA is thermally superior. Applications operating at lower currents may tolerate the AQV414EHA's higher resistance.

Q: Are the input voltage specifications compatible?

A: The PS7341L-1B-A requires 1.2 VDC input, while both substitutes operate at 1.14 VDC. This 0.06 VDC difference is within typical control circuit tolerances and does not prevent substitution. Control circuits designed for 1.2 VDC operation will function with 1.14 VDC input devices.

Q: Do the substitute parts fit the existing PCB layout?

A: Yes. Both AQV414EHA and AQV454HA maintain the 6-SMD (0.300", 7.62mm) package with gull wing termination, identical to the PS7341L-1B-A. No PCB redesign is required for mechanical compatibility.

Q: What regulatory compliance advantages do the substitutes offer?

A: Both Panasonic Electric Works substitutes carry ROHS3 compliance certification, whereas the PS7341L-1B-A compliance status is not specified. This ensures alignment with current environmental and regulatory requirements for new designs and procurement.

Q: Why is the PS7341L-1B-A classified as obsolete?

A: Obsolescence indicates the manufacturer has discontinued production. The AQV454HA and AQV414EHA are active products with confirmed ongoing availability, providing design continuity and supply chain stability.