PS7205B-1A-F3-A Solid State Relay: Equivalent & Substitute Parts

Part Overview

The PS7205B-1A-F3-A is a Surface Mount Solid State Relay (SSR) manufactured by CEL, configured as a SPST-NO (Single Pole Single Throw, Normally Open) relay in a 4-SOP package. This component operates with a 1.1VDC input and supports load voltages from 0V to 80V at 500mA maximum load current, with an on-state resistance of 1.2 Ohms maximum. The PS7205B-1A-F3-A is classified as Obsolete. Equivalent substitute parts are necessary to maintain design continuity and ensure component availability for new production runs and field replacements.

Substiute Parts

PS7205B-1A-F3-A

CELIn Stock: 3428PS7205B-1A-F3-A Datasheet

Current PartRFQ

AQY225R2SX

Panasonic Electric WorksIn Stock: 2796AQY225R2SX Datasheet

SimilarRFQ

AQY225R2SZ

Panasonic Electric WorksIn Stock: 2012AQY225R2SZ Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the PS7205B-1A-F3-A are identified based on strict electrical and mechanical compatibility criteria. The following parameters define the substitution scope:

Critical Matching Parameters:

• Circuit Configuration: SPST-NO (1 Form A)
• Output Type: AC, DC capability
• Load Voltage Range: 0V ~ 80V
• Package / Case: 4-SOP (0.173", 4.40mm)
• Termination Style: Gull Wing
• Mounting Type: Surface Mount

Allowable Parameter Variations:

• Input Voltage: Substitute parts must operate at or below the original 1.1VDC specification
• Load Current: Substitute parts may have lower maximum current ratings if the application does not require the full 500mA capacity
• On-State Resistance: Substitute parts may have higher resistance values within acceptable application limits

The identified substitute parts AQY225R2SX and AQY225R2SZ meet the critical matching parameters. Both are manufactured by Panasonic Electric Works in the PhotoMOS™ AQY series and maintain identical package, circuit configuration, and load voltage specifications. However, both substitutes have reduced load current ratings (150mA versus 500mA) and increased on-state resistance (15 Ohms versus 1.2 Ohms).

Parameter Comparison

Engineering Selection Recommendations

Product Status Consideration: The PS7205B-1A-F3-A is classified as Obsolete. Both substitute parts, AQY225R2SX and AQY225R2SZ, are classified as Active and manufactured by Panasonic Electric Works, ensuring long-term availability and continued production support.

Compliance and Regulatory Status: Both substitute parts are REACH Unaffected, providing improved regulatory compliance compared to the original REACH Affected status of the PS7205B-1A-F3-A. Both substitutes are RoHS Compliant, meeting modern environmental standards. All three parts share the same ECCN (EAR99) and HTSUS code (8536.41.0030) classification.

Electrical Compatibility: The substitute parts maintain identical load voltage range (0V ~ 80V) and circuit configuration (SPST-NO). Input voltage specifications are compatible (1.14VDC versus 1.1VDC). The substitutes support AC and DC output with RF capability.

Current Rating Limitation: The substitute parts have a maximum load current of 150mA, compared to 500mA for the original part. Selection of substitute parts is appropriate only for applications where the load current does not exceed 150mA.

On-State Resistance: The substitute parts have an on-state resistance of 15 Ohms maximum, compared to 1.2 Ohms for the original part. Applications sensitive to voltage drop across the relay contact resistance must account for this 12.5-fold increase in resistance.

Packaging: The substitute parts are supplied in Tape & Reel (TR) packaging, suitable for automated assembly processes. The original part packaging format is not specified as Tape & Reel.

Frequently Asked Questions (FAQ)

Q: Can AQY225R2SX and AQY225R2SZ be used interchangeably with PS7205B-1A-F3-A?

A: Both substitute parts are electrically and mechanically compatible with the PS7205B-1A-F3-A in applications where the load current does not exceed 150mA. The identical 4-SOP package, gull wing termination, and 0V ~ 80V load voltage range ensure direct PCB footprint compatibility. However, the increased on-state resistance (15 Ohms versus 1.2 Ohms) must be evaluated for voltage drop impact in the specific application circuit.

Q: What is the difference between AQY225R2SX and AQY225R2SZ?

A: Both parts are functionally identical with the same electrical specifications. The primary difference is RoHS compliance status: AQY225R2SX is ROHS3 Compliant, while AQY225R2SZ is RoHS Compliant. Both are REACH Unaffected. Selection between these two substitutes depends on specific regulatory requirements for the end application.

Q: Why do the substitute parts have lower load current ratings?

A: The AQY225R2SX and AQY225R2SZ are rated for 150mA maximum load current, compared to 500mA for the PS7205B-1A-F3-A. This is a design characteristic of the PhotoMOS™ AQY series. Applications requiring higher current capacity must use alternative relay solutions.

Q: Are the substitute parts suitable for RF applications?

A: Yes. Both AQY225R2SX and AQY225R2SZ are specified for AC, DC (RF) output, indicating RF capability. The original PS7205B-1A-F3-A is specified for AC, DC output without RF designation.

Q: What is the impact of increased on-state resistance on circuit performance?

A: The substitute parts have 15 Ohms on-state resistance compared to 1.2 Ohms for the original part. In a circuit with 150mA load current, this results in a voltage drop of 2.25V across the relay contacts (150mA × 15 Ohms), compared to 0.18V for the original part (150mA × 1.2 Ohms). Applications with tight voltage margin requirements must account for this increased voltage drop.

Q: Are the substitute parts available in the same packaging format?

A: The substitute parts are supplied in Tape & Reel (TR) packaging, suitable for automated assembly. The original PS7205B-1A-F3-A packaging format is not specified. Both substitutes maintain the identical 4-SOP (0.173", 4.40mm) physical package with gull wing termination, ensuring PCB compatibility.

Q: What is the input voltage compatibility?

A: The substitute parts require 1.14VDC input, compared to 1.1VDC for the original part. This 0.04VDC difference is within typical circuit tolerance and does not present a compatibility issue for standard control circuits.

Q: Are there any moisture sensitivity differences?

A: The original PS7205B-1A-F3-A is specified with MSL 1 (Unlimited). Moisture sensitivity specifications for the substitute parts are not provided in the available data.