PS7122A-1B-A Solid State Relay: Equivalent & Substitute Parts

Part Overview

The PS7122A-1B-A is a solid state relay (SSR) manufactured by CEL, configured as a SPST-NC (1 Form B) device rated for 200 mA load current across 0–250 V AC/DC output. The device operates with 1.2 VDC input control voltage and features 8 Ohms maximum on-state resistance in a 6-DIP through-hole package.

This part is classified as obsolete. Identifying equivalent substitute components is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production or field replacement requirements.

Substiute Parts

PS7122A-1B-A

CELIn Stock: 931PS7122A-1B-A Datasheet

Current PartRFQ

AQV453

Panasonic Electric WorksIn Stock: 1838AQV453 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the PS7122A-1B-A is determined by strict equivalence across the following critical parameters:

• Circuit Configuration: Must be SPST-NC (1 Form B) to maintain identical switching behavior
• Load Current Rating: Must support minimum 200 mA
• Load Voltage Range: Must cover 0 V – 250 V AC/DC operation
• Package / Case: Must be 6-DIP (0.300", 7.62mm) for PCB compatibility
• Mounting Type: Must be through-hole to match existing board layouts
• Termination Style: Must use PC Pin configuration
• On-State Resistance: Must not exceed 8 Ohms

The AQV453 manufactured by Panasonic Electric Works meets all substitution criteria. This part maintains identical electrical specifications and physical form factor while offering active product status and improved supply availability.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitute: AQV453 (Panasonic Electric Works)

The AQV453 is the qualified equivalent for PS7122A-1B-A replacement. Selection rationale:

• All critical electrical parameters match or exceed the original specification
• Input voltage requirement (1.14 VDC) is lower than the original (1.2 VDC), providing operational margin
• Active product status ensures ongoing availability and supply chain stability
• ROHS3 compliance and REACH unaffected status provide regulatory advantage over the obsolete PS7122A-1B-A
• Identical 6-DIP package and through-hole termination enable direct PCB substitution without layout modification
• Both parts share ECCN EAR99 and HTSUS 8536.41.0030 classification

No design changes, circuit modifications, or board rework are required when substituting AQV453 for PS7122A-1B-A in applications requiring SPST-NC solid state relay functionality at 200 mA, 0–250 V load ratings.

Frequently Asked Questions (FAQ)

Q: Can AQV453 be used as a direct replacement for PS7122A-1B-A without PCB modification?

A: Yes. Both parts use identical 6-DIP (0.300", 7.62mm) package with PC Pin termination. Pin-for-pin compatibility is maintained. No board rework is necessary.

Q: What is the significance of the lower input voltage (1.14 VDC vs. 1.2 VDC) on the AQV453?

A: The AQV453 requires slightly less input voltage to operate. This represents improved sensitivity and provides operational margin. Existing control circuits designed for 1.2 VDC input will operate the AQV453 reliably.

Q: Why is product status (obsolete vs. active) important for this substitution?

A: The PS7122A-1B-A is obsolete, meaning CEL no longer manufactures or supports this part. The AQV453 is active, ensuring continued availability, technical support, and supply chain reliability for new production and field replacements.

Q: Does the AQV453 meet the same regulatory requirements as the PS7122A-1B-A?

A: The AQV453 exceeds regulatory requirements. It is ROHS3 compliant and REACH unaffected, whereas the PS7122A-1B-A is REACH affected. Both share identical ECCN and HTSUS classifications.

Q: Are there any load current or voltage limitations when using AQV453 as a substitute?

A: No. The AQV453 maintains the same 200 mA load current rating and 0–250 V load voltage range as the PS7122A-1B-A. All electrical specifications are equivalent.

Q: What packaging format is the AQV453 supplied in?

A: The AQV453 is supplied in tube packaging, whereas specific packaging for PS7122A-1B-A was not detailed. Both are through-hole components suitable for standard PCB assembly processes.