PS7221A-2A-F3-A Equivalent & Substitute Parts

Part Overview

The PS7221A-2A-F3-A is a solid-state relay (SSR) manufactured by CEL, configured as a SPST-NO (Single Pole Single Throw - Normally Open) relay with dual channels in an 8-SOP surface mount package. This component is rated for 170 mA load current across 0–260 V AC/DC output voltage with a 1.2 VDC input trigger voltage.

The PS7221A-2A-F3-A is classified as obsolete. Locating equivalent or substitute components is necessary to support ongoing maintenance, repair, and new design requirements where this part is specified or where inventory depletion occurs.

Substiute Parts

PS7221A-2A-F3-A

CELIn Stock: 1563PS7221A-2A-F3-A Datasheet

Current PartRFQ

AQW210SZ

Panasonic Electric WorksIn Stock: 3003AQW210SZ Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the PS7221A-2A-F3-A is determined by the following critical parameters:

Mechanical Compatibility:

• Package type: 8-SOP (0.173", 4.40mm Width)
• Termination style: Gull Wing
• Mounting type: Surface Mount

Electrical Compatibility:

• Circuit configuration: SPST-NO (1 Form A) x 2 (dual channels)
• Output type: AC/DC switching capability
• Input voltage: 1.2 VDC nominal trigger
• Load voltage range: 0–260 V minimum
• Load current: 170 mA minimum
• On-state resistance: 10 Ohms maximum

Regulatory & Compliance:

• ECCN: EAR99
• HTSUS: 8536.41.0030
• Moisture Sensitivity Level: 1 (Unlimited)

The AQW210SZ meets the mechanical package requirements and circuit configuration. However, electrical parameter differences exist and must be evaluated for application suitability.

Parameter Comparison

Engineering Selection Recommendations

AQW210SZ as a Substitute:

The AQW210SZ is mechanically and functionally compatible with the PS7221A-2A-F3-A in terms of package footprint, circuit topology, and output type. Both components are classified under the same HTSUS code and share EAR99 export classification.

The AQW210SZ holds Active product status, ensuring continued availability and supply chain support, whereas the PS7221A-2A-F3-A is Obsolete.

Electrical Parameter Differences:

The AQW210SZ exhibits the following electrical differences:

• Load voltage rating is higher (350 V vs. 260 V)
• Load current rating is lower (100 mA vs. 170 mA)
• On-state resistance is higher (35 Ohms vs. 10 Ohms)
• Input voltage is slightly lower (1.14 VDC vs. 1.2 VDC)

These differences indicate that the AQW210SZ is suitable for applications where load current does not exceed 100 mA and where higher on-state resistance is acceptable. Applications requiring the full 170 mA load current or lower on-state resistance of the PS7221A-2A-F3-A require alternative solutions.

Compliance Status:

The AQW210SZ is RoHS3 Compliant and REACH Unaffected, providing enhanced regulatory alignment compared to the PS7221A-2A-F3-A (REACH Affected).

Frequently Asked Questions (FAQ)

Q: Can the AQW210SZ directly replace the PS7221A-2A-F3-A in all applications?

A: No. While both components share identical package geometry and circuit configuration, the AQW210SZ has a lower maximum load current rating (100 mA vs. 170 mA) and higher on-state resistance (35 Ohms vs. 10 Ohms). Substitution is valid only for applications where load current does not exceed 100 mA and where the higher resistance is compatible with circuit performance.

Q: What is the significance of the 8-SOP package specification?

A: The 8-SOP (Small Outline Package) with 0.173" width and 4.40mm body width defines the physical footprint and pin spacing. Both the PS7221A-2A-F3-A and AQW210SZ use this identical package, ensuring PCB layout compatibility and mechanical interchangeability at the board level.

Q: Why does the AQW210SZ have a higher load voltage rating but lower current rating?

A: These are independent electrical specifications determined by the internal semiconductor design and thermal characteristics of each device. Higher voltage rating does not correlate with higher current capacity. The AQW210SZ is optimized for higher voltage switching applications with moderate current loads.

Q: Are there any compliance advantages to using the AQW210SZ?

A: Yes. The AQW210SZ is RoHS3 Compliant and REACH Unaffected, whereas the PS7221A-2A-F3-A is REACH Affected. For applications subject to RoHS or REACH regulations, the AQW210SZ provides enhanced compliance status.

Q: What does "Gull Wing" termination mean?

A: Gull Wing termination refers to the lead configuration where the leads extend outward and downward from the package body, resembling a bird's wing. This is the standard termination style for SOP packages and is compatible with standard surface mount assembly processes.

Q: Is the PS7221A-2A-F3-A still available for purchase?

A: The PS7221A-2A-F3-A is classified as Obsolete. While inventory may exist from authorized distributors (1490 pieces noted as in stock), long-term availability is not guaranteed. The AQW210SZ, classified as Active, provides assured supply chain continuity.

Q: What does "SPST-NO (1 Form A) x 2" mean?

A: This indicates two independent Single Pole Single Throw - Normally Open relay channels within a single 8-pin package. Each channel operates independently and can switch one load circuit. The "x 2" denotes dual channels.