PS710A-1A Solid State Relay SPST-NO Equivalent & Substitute Parts

Part Overview

The PS710A-1A is a solid state relay (SSR) manufactured by CEL, configured as a single-pole single-throw normally open (SPST-NO) device in a 6-DIP package. This component operates with a 1.2VDC input and supports load voltages from 0V to 60V at 1.8A maximum current, suitable for both AC and DC output switching applications.

The PS710A-1A is classified as obsolete. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure component availability, and support ongoing production or repair requirements for systems utilizing this relay.

Substiute Parts

PS710A-1A

CELIn Stock: 1965PS710A-1A Datasheet

Current PartRFQ

AQV101

Panasonic Electric WorksIn Stock: 13919AQV101 Datasheet

SimilarRFQ

AQY272

Panasonic Electric WorksIn Stock: 7647AQY272 Datasheet

SimilarRFQ

VO14642AT

Vishay Semiconductor Opto DivisionIn Stock: 5424VO14642AT Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the PS710A-1A is determined by the following critical parameters:

Primary Compatibility Criteria:

• Circuit configuration must be SPST-NO (1 Form A)
• Load voltage range must encompass 0V to 60V
• Load current capability must meet or exceed 1.8A
• Output type must support both AC and DC switching
• Package must be 6-DIP (0.300", 7.62mm) for direct PCB compatibility
• Mounting type must be Through Hole with PC Pin termination

Substitute Parts Identified:

Group 1 - Package Compatible (6-DIP):

• VO14642AT (Vishay Semiconductor Opto Division): Meets voltage and package requirements; load current 1A is below the 1.8A requirement
• AQV101 (Panasonic Electric Works): 6-DIP package; load voltage limited to 0V-40V, below the 60V requirement; load current 700mA insufficient

Group 2 - Electrical Compatible (Voltage & Current):

• AQY272 (Panasonic Electric Works): Supports 0V-60V load voltage and 2A load current; package is 4-DIP (0.400", 10.16mm), not compatible with 6-DIP footprint

Parameter Comparison

Engineering Selection Recommendations

VO14642AT (Vishay Semiconductor Opto Division): This part offers the closest mechanical and electrical compatibility with the PS710A-1A. Both components share the 6-DIP (0.300", 7.62mm) package footprint, enabling direct PCB substitution without layout modifications. The VO14642AT supports the full 0V-60V load voltage range and AC/DC output switching. However, the maximum load current rating of 1A is 44% below the PS710A-1A specification of 1.8A. This part is suitable for applications where the actual load current does not exceed 1A. The VO14642AT is ROHS3 compliant and maintains active product status, ensuring long-term availability and supply chain stability.

AQY272 (Panasonic Electric Works): This part exceeds the electrical requirements of the PS710A-1A, with a 2A load current capability and 180 mOhms on-state resistance superior to the original specification. It supports the full 0V-60V load voltage range and AC/DC output switching. The AQY272 is ROHS3 compliant with active product status. However, the package is 4-DIP (0.400", 10.16mm), which is mechanically incompatible with the 6-DIP footprint. PCB redesign and component repositioning are required for implementation.

AQV101 (Panasonic Electric Works): This part shares the 6-DIP package footprint with the PS710A-1A but does not meet the electrical requirements. The maximum load voltage of 40V falls short of the 60V specification, and the 700mA load current is insufficient for the 1.8A requirement. This part is not suitable for direct substitution.

Frequently Asked Questions (FAQ)

Q1: Can the VO14642AT directly replace the PS710A-1A on the PCB?

A: Yes, the VO14642AT can be directly installed in the same 6-DIP footprint without PCB modifications. Both components use identical 6-DIP (0.300", 7.62mm) packages with PC Pin termination. However, verify that the actual load current in your application does not exceed 1A, as the VO14642AT is rated for 1A maximum versus the PS710A-1A's 1.8A rating.

Q2: Why is the AQY272 not a direct substitute despite superior electrical ratings?

A: The AQY272 uses a 4-DIP (0.400", 10.16mm) package, which has a different pin spacing and footprint than the PS710A-1A's 6-DIP (0.300", 7.62mm) package. Direct PCB installation is not possible without redesigning the component placement and routing. The AQY272 requires PCB layout modifications to implement.

Q3: What is the significance of the load voltage range in substitution?

A: The load voltage range defines the maximum voltage the relay can switch. The PS710A-1A supports 0V to 60V. Any substitute must support at least this range. The AQV101, limited to 0V-40V, cannot safely switch loads above 40V and is therefore unsuitable for applications requiring the full 60V capability.

Q4: Does the input voltage difference between the PS710A-1A (1.2VDC) and VO14642AT (1.3VDC) affect compatibility?

A: The input voltage difference of 0.1VDC is negligible for most applications. Both values fall within typical control signal ranges. Verify that your control circuit can supply the VO14642AT's 1.3VDC requirement, but this minor difference typically does not prevent substitution.

Q5: What does RoHS3 compliance mean for the substitute parts?

A: ROHS3 compliance indicates that the substitute parts (VO14642AT, AQV101, AQY272) meet Restriction of Hazardous Substances regulations and do not contain restricted materials such as lead, cadmium, or mercury. The original PS710A-1A is RoHS non-compliant. Using ROHS3-compliant substitutes aligns with modern environmental and regulatory standards.

Q6: Can the AQV101 be used if the application only requires 40V switching?

A: The AQV101 is mechanically compatible (6-DIP package) and can be used in applications where the load voltage does not exceed 40V. However, the 700mA load current rating remains insufficient for the PS710A-1A's 1.8A specification. Use the AQV101 only if both the load voltage is limited to 40V and the load current does not exceed 700mA.

Q7: What is on-state resistance and why does it matter?

A: On-state resistance is the electrical resistance of the relay when conducting current. Lower resistance reduces power dissipation and heat generation. The PS710A-1A specifies 200 mOhms maximum. The VO14642AT (250 mOhms) has slightly higher resistance, while the AQY272 (180 mOhms) has lower resistance. For high-current applications, lower on-state resistance is preferable to minimize thermal effects.