PS7342L-1A-A Solid State Relay SPST-NO 200mA 0-400V Equivalent & Substitute Parts

Part Overview

The PS7342L-1A-A is a surface mount solid state relay (SSR) manufactured by CEL, configured as a single-pole single-throw normally open (SPST-NO) device. This component operates with a 1.2VDC input signal and controls AC/DC loads up to 200mA at voltages ranging from 0V to 400V. The device features a 6-SMD gull wing package with 10 ohms maximum on-state resistance.

The PS7342L-1A-A is classified as obsolete. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production requirements for applications utilizing this relay topology.

Substiute Parts

PS7342L-1A-A

CELIn Stock: 983PS7342L-1A-A Datasheet

Current PartRFQ

PLA140LS

IXYS Integrated Circuits DivisionIn Stock: 2451PLA140LS Datasheet

DirectRFQ

AQV253HA

Panasonic Electric WorksIn Stock: 1593AQV253HA Datasheet

SimilarRFQ

AQV254A

Panasonic Electric WorksIn Stock: 1424AQV254A Datasheet

SimilarRFQ

AQV254HA

Panasonic Electric WorksIn Stock: 1834AQV254HA Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the PS7342L-1A-A is determined by strict alignment of the following critical parameters:

Primary Substitution Criteria:

• Circuit configuration: SPST-NO (1 Form A)
• Output type: AC and DC capability
• Voltage load range: 0V to 400V minimum
• Load current: 200mA minimum
• Package / Case: 6-SMD (0.300", 7.62mm)
• Termination style: Gull Wing
• Mounting type: Surface Mount

Secondary Compatibility Factors:

• Input voltage: 1.2VDC nominal (tolerance range acceptable)
• On-state resistance: Maximum 10 ohms preferred; higher values acceptable if load current requirement is met
• Moisture sensitivity level: MSL 1 or equivalent

Substitute parts are classified into two categories based on load current capability:

Direct Substitutes (200mA Load Current):

• PLA140LS (IXYS) - Meets all primary criteria with 200mA load current and 0-400V voltage range

Functional Substitutes (Reduced Load Current):

• AQV254A, AQV254HA (Panasonic) - 150mA load current with 0-400V voltage range; suitable for applications not requiring full 200mA capacity
• AQV253HA (Panasonic) - 200mA load current with reduced voltage range (0-250V); suitable for applications not exceeding 250V load voltage

Parameter Comparison

Engineering Selection Recommendations

Primary Recommendation: PLA140LS (IXYS Integrated Circuits Division)

The PLA140LS is the optimal direct substitute for the PS7342L-1A-A. This part maintains identical electrical specifications for load current (200mA) and voltage range (0-400V), ensuring drop-in compatibility for existing circuit designs. The PLA140LS is classified as active product status, providing long-term supply chain availability. The device is ROHS3 compliant and REACH unaffected, meeting current regulatory requirements. The on-state resistance of 13 ohms is within acceptable tolerance for applications designed around the PS7342L-1A-A 10-ohm specification.

Secondary Recommendation: AQV253HA (Panasonic Electric Works)

The AQV253HA is suitable for applications where the load voltage does not exceed 250V. This part maintains the 200mA load current specification and offers superior on-state resistance (8 ohms), reducing power dissipation. The AQV253HA is active product status with ROHS3 compliance and REACH unaffected status. Selection of this part requires verification that the application load voltage remains within the 0-250V range.

Conditional Recommendation: AQV254A or AQV254HA (Panasonic Electric Works)

The AQV254A and AQV254HA are suitable for applications where the load current requirement does not exceed 150mA. Both parts maintain the full 0-400V voltage range and are active product status with ROHS3 compliance. The AQV254HA offers additional RoHS compliance assurance. These parts are appropriate for designs with reduced current demands or where the 150mA specification aligns with application requirements.

Frequently Asked Questions (FAQ)

Q: Can the PLA140LS directly replace the PS7342L-1A-A without circuit modification?

A: Yes. The PLA140LS maintains identical circuit configuration (SPST-NO), output type (AC/DC), input voltage (1.2VDC), load voltage range (0-400V), and load current (200mA). The 6-SMD gull wing package and surface mount termination are identical. The on-state resistance increase from 10 ohms to 13 ohms is within acceptable tolerance for most applications.

Q: What is the key difference between the AQV253HA and AQV254A substitutes?

A: The AQV253HA supports 200mA load current with a maximum voltage of 250V. The AQV254A supports 150mA load current with a maximum voltage of 400V. Selection depends on whether the application requires full 200mA capacity or full 400V voltage range. Both cannot be used if the application requires both 200mA and 400V simultaneously.

Q: Are all substitute parts compatible with the same PCB footprint?

A: Yes. All substitute parts use the 6-SMD (0.300", 7.62mm) package with gull wing termination. PCB footprints designed for the PS7342L-1A-A are compatible with PLA140LS, AQV253HA, AQV254A, and AQV254HA without modification.

Q: What is the significance of the REACH and RoHS compliance differences?

A: The PS7342L-1A-A is REACH affected, indicating potential restrictions on use in certain applications or regions. All substitute parts are either REACH unaffected or ROHS3 compliant, providing improved regulatory compliance for new designs and applications subject to environmental restrictions.

Q: Can the AQV254A or AQV254HA be used in applications originally designed for 200mA operation?

A: No. The AQV254A and AQV254HA are rated for 150mA maximum load current. Use in applications requiring 200mA operation will exceed the component rating and may result in device failure or reduced reliability.

Q: What is the input voltage tolerance for substitute parts?

A: The PS7342L-1A-A specifies 1.2VDC input. Substitute parts specify 1.14VDC (Panasonic) or 1.2VDC (IXYS). The 0.06VDC difference is within typical component tolerance and does not affect functional compatibility in standard applications.

Q: Are there any thermal or power dissipation considerations when selecting substitutes?

A: On-state resistance values differ among substitutes. The AQV253HA (8 ohms) dissipates less power than the PS7342L-1A-A (10 ohms) or PLA140LS (13 ohms). For applications with thermal constraints or high-frequency switching, the lower resistance of the AQV253HA may provide operational advantages, provided the 250V voltage limit is acceptable.