PS7142L-1A Equivalent & Substitute Parts

Part Overview

The PS7142L-1A is a solid state SPST-NO relay manufactured by CEL, designed for switching applications requiring 200 mA load current at 0–400 V output voltage with 1.2 VDC input control. This component is classified as obsolete, making identification of functionally equivalent alternatives necessary for ongoing system support and production continuity. Substitute parts must maintain compatibility across electrical load specifications, control voltage requirements, and physical package dimensions to ensure drop-in replacement capability.

Substiute Parts

PS7142L-1A

CELIn Stock: 2187PS7142L-1A Datasheet

Current PartRFQ

AQV203A

Panasonic Electric WorksIn Stock: 23593AQV203A Datasheet

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AQV204A

Panasonic Electric WorksIn Stock: 2707AQV204A Datasheet

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AQV253A

Panasonic Electric WorksIn Stock: 1635AQV253A Datasheet

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AQV254A

Panasonic Electric WorksIn Stock: 1424AQV254A Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the PS7142L-1A is determined by the following critical parameters:

Primary Substitution Criteria:

• SPST-NO (1 Form A) circuit configuration
• 6-SMD (0.300", 7.62mm) package with Gull Wing termination
• Surface mount mounting type
• Output voltage rating (0–400 V or 0–250 V)
• Load current rating (200 mA or 150 mA)
• Control input voltage compatibility (1.2 VDC for PS7142L-1A)

The substitute parts are grouped into two functional categories based on output voltage and current ratings:

Group A – Full Load Equivalents (200 mA): AQV203A and AQV253A provide 200 mA output current matching the original specification, with variations in maximum output voltage.

Group B – Reduced Load Equivalents (150 mA): AQV204A and AQV254A provide 150 mA output current with 0–400 V output voltage capability, suitable for applications where load current requirements do not exceed 150 mA.

All substitute parts maintain identical package geometry, termination style, and mounting characteristics, ensuring physical and electrical compatibility within the specified parameter ranges.

Parameter Comparison

Engineering Selection Recommendations

AQV203A: Recommended for applications requiring 200 mA load current with maximum output voltage of 250 V. This part offers active product status with RoHS compliance, ensuring regulatory alignment for new designs and production continuity. Control voltage requirement of 2.3 VDC differs from the original 1.2 VDC specification.

AQV204A: Suitable for applications where maximum load current is limited to 150 mA and full 0–400 V output voltage capability is required. Offers active product status with ROHS3 compliance. Control voltage requirement of 2.3 VDC differs from the original specification.

AQV253A: Appropriate for 200 mA load current applications with 0–250 V output voltage requirement. Features active product status with ROHS3 compliance. Control voltage requirement of 1.14 VDC provides closest alignment to the original 1.2 VDC specification.

AQV254A: Suitable for 150 mA load current applications with 0–400 V output voltage capability. Offers active product status with ROHS3 compliance. Control voltage requirement of 1.14 VDC provides close alignment to the original 1.2 VDC specification.

All substitute parts are from Panasonic Electric Works PhotoMOS™ AQV series with active product status, providing assured long-term availability compared to the obsolete PS7142L-1A original part.

Frequently Asked Questions (FAQ)

Q: Can AQV203A be used as a direct replacement for PS7142L-1A in all applications? A: AQV203A maintains load current (200 mA) and package compatibility but limits maximum output voltage to 250 V compared to the original 400 V specification. Substitution is valid only for applications where the load voltage does not exceed 250 V. Control voltage differs (2.3 VDC vs. 1.2 VDC original).

Q: What is the key difference between the 200 mA and 150 mA substitute groups? A: Parts rated for 200 mA (AQV203A, AQV253A) match the original load current specification. Parts rated for 150 mA (AQV204A, AQV254A) are suitable only for applications where maximum switched current is 150 mA or less. Load current must be verified before selection.

Q: How do control voltage differences affect part selection? A: The original PS7142L-1A requires 1.2 VDC control input. AQV253A and AQV254A require 1.14 VDC (nearest match), while AQV203A and AQV204A require 2.3 VDC. System control voltage architecture must be verified for compatibility.

Q: Are all substitute parts RoHS compliant? A: Yes. All Panasonic Electric Works substitutes (AQV203A, AQV204A, AQV253A, AQV254A) meet RoHS compliance requirements (RoHS Compliant or ROHS3 Compliant), whereas the original PS7142L-1A is RoHS non-compliant.

Q: Are the package and termination characteristics identical across all parts? A: Yes. All parts use 6-SMD (0.300", 7.62mm) package with Gull Wing termination and surface mount configuration, ensuring mechanical compatibility for PCB assembly.

Q: Can substitutes with lower on-state resistance values be used without circuit modification? A: On-state resistance values (8 Ohms for AQV203A/AQV253A vs. 10 Ohms original, 16 Ohms for AQV204A/AQV254A) affect power dissipation. Lower resistance values reduce heat generation, requiring circuit validation but generally permitting direct substitution without modification.