PS7122AL-1B-A

Part Overview

The PS7122AL-1B-A is a Solid State SPST-NC (1 Form B) relay manufactured by CEL, rated for 200mA load current at 0-250V operation. This surface-mount component operates with a 1.2VDC input and features an 8 Ohm maximum on-state resistance in a 6-SMD (0.300", 7.62mm) gull wing package. The product is obsolete, necessitating identification of active equivalent components for continued system support and procurement.

Substiute Parts

PS7122AL-1B-A

CELIn Stock: 1045PS7122AL-1B-A Datasheet

Current PartRFQ

AQV453A

Panasonic Electric WorksIn Stock: 3269AQV453A Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the PS7122AL-1B-A are selected based on the following critical electrical and mechanical parameters that determine functional equivalence:

Electrical Parameters: SPST-NC circuit configuration, AC/DC output capability, input voltage range compatibility (minimum 1.14VDC), load voltage range (0-250V), load current rating (200mA), and on-state resistance specification (8 Ohms maximum).

Mechanical Parameters: Surface mount mounting type, 6-SMD package with 0.300" (7.62mm) dimensions, and gull wing termination style.

The AQV453A from Panasonic Electric Works meets these requirements with input voltage of 1.14VDC, identical load voltage and current specifications, matching on-state resistance, and compatible package configuration. Both components share the same HTSUS classification (8536.41.0030) and EAR99 export control designation.

Parameter Comparison

Engineering Selection Recommendations

The AQV453A is the primary substitute for PS7122AL-1B-A applications. The AQV453A offers active product status with current manufacturing support, contrasting with the obsolete status of the original component. The AQV453A provides ROHS3 compliance and REACH unaffected status, presenting advantages for regulatory requirements compared to the REACH affected original part. Both components are classified as EAR99 for export control purposes.

The input voltage differential between components (1.2VDC versus 1.14VDC) remains within acceptable operating margins for typical SPST-NC relay applications. All critical electrical parameters—load voltage rating, load current capacity, and on-state resistance—match identically between the PS7122AL-1B-A and AQV453A. The mechanical compatibility, including surface mount technology, 6-SMD package geometry, and gull wing termination, ensures direct board-level substitution without design modification.

Frequently Asked Questions (FAQ)

Q: Can AQV453A directly replace PS7122AL-1B-A in existing designs?

A: Yes. The AQV453A provides identical electrical ratings (200mA at 0-250V), matching on-state resistance (8 Ohms), and compatible package dimensions (6-SMD, 0.300", 7.62mm gull wing). The input voltage requirement of 1.14VDC is lower than the original 1.2VDC specification, making it compatible with existing drive circuits. No design modifications are necessary.

Q: What are the key parameters that determine substitution eligibility?

A: Substitution eligibility is determined by: SPST-NC circuit configuration, AC/DC output capability, load voltage range (0-250V), load current rating (200mA), on-state resistance specification (8 Ohms), surface mount technology, 6-SMD package format with 0.300" (7.62mm) dimensions, and gull wing termination style. All of these parameters must match between components for direct substitution.

Q: Why is the AQV453A preferred over the original PS7122AL-1B-A?

A: The AQV453A maintains active product status with ongoing manufacturing availability, whereas the PS7122AL-1B-A is obsolete. The AQV453A provides ROHS3 compliance and REACH unaffected regulatory status. These factors ensure long-term supply chain stability and compliance with current environmental and trade regulations.

Q: Are there input voltage compatibility issues between the two components?

A: No. The AQV453A operates at 1.14VDC input, which is 0.06VDC lower than the original 1.2VDC. This difference does not create compatibility issues in standard relay drive circuits. Both components operate within the same functional input voltage envelope for typical applications.

Q: What is the packaging difference between PS7122AL-1B-A and AQV453A?

A: The original PS7122AL-1B-A packaging specification was not defined in the documentation. The AQV453A is supplied in tube packaging. Both components use identical 6-SMD (0.300", 7.62mm) gull wing package format suitable for automatic board assembly processes.