PS7200B-1A Solid State Relay SPST-NO Equivalent & Substitute Parts

Part Overview

The PS7200B-1A is a Solid State Relay (SSR) manufactured by CEL, configured as a SPST-NO (Single Pole Single Throw - Normally Open) device in a 4-SOP surface mount package. This component is designed for switching applications with a maximum load current of 250 mA across a 0 V to 40 V load voltage range, controlled by a 1.2 VDC input signal.

The PS7200B-1A 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 existing inventory requires replenishment from alternative sources.

Substiute Parts

PS7200B-1A

CELIn Stock: 1473PS7200B-1A Datasheet

Current PartRFQ

AQY221R2S

Panasonic Electric WorksIn Stock: 1169AQY221R2S Datasheet

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CPC1030N

IXYS Integrated Circuits DivisionIn Stock: 3586CPC1030N Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the PS7200B-1A is determined by the following critical parameters:

Primary Compatibility Criteria:

• Circuit configuration must be SPST-NO (1 Form A)
• Output type must support AC and DC switching
• Load voltage range must encompass or exceed 0 V ~ 40 V
• Load current capability must be equal to or greater than 250 mA
• On-state resistance must not exceed 1.5 Ohms
• Package must be 4-SOP with gull wing termination
• Surface mount mounting type required

Substitute Parts Identified:

Group 1 - Direct Functional Equivalent: AQY221R2S (Panasonic Electric Works) meets all primary compatibility criteria with equivalent electrical performance and identical package specifications.

Group 2 - Partial Compatibility: CPC1030N (IXYS Integrated Circuits Division) shares the same circuit configuration and package family but operates within different electrical parameters that may limit direct substitution in certain applications.

Parameter Comparison

Engineering Selection Recommendations

AQY221R2S (Panasonic Electric Works PhotoMOS™ AQY Series)

The AQY221R2S is the primary equivalent substitute for the PS7200B-1A. This component is currently in active production status, ensuring long-term availability and supply chain stability. The AQY221R2S meets all electrical specifications of the original part: identical load voltage range (0 V ~ 40 V), matching load current capacity (250 mA), superior on-state resistance (1.25 Ohms versus 1.5 Ohms maximum), and compatible input voltage (1.14 VDC versus 1.2 VDC). Package dimensions and termination style are identical. The AQY221R2S carries ROHS3 compliance certification, providing regulatory advantage over the non-compliant PS7200B-1A. This part is suitable for direct replacement in applications where the PS7200B-1A was originally specified.

CPC1030N (IXYS Integrated Circuits Division OptoMOS® Series)

The CPC1030N shares the same circuit topology and surface mount package family but operates under different electrical constraints. The load current rating of 120 mA is insufficient for applications requiring the full 250 mA capacity of the PS7200B-1A. The on-state resistance of 30 Ohms significantly exceeds the 1.5 Ohm maximum of the original part, resulting in substantially higher power dissipation. However, the CPC1030N supports a load voltage range of 0 V ~ 350 V, providing extended voltage capability beyond the PS7200B-1A specification. This part is suitable only for applications where load current does not exceed 120 mA and where the extended voltage range provides functional benefit. The CPC1030N is not recommended as a general substitute for the PS7200B-1A in standard 250 mA applications.

Frequently Asked Questions (FAQ)

Q: Can the AQY221R2S directly replace the PS7200B-1A without circuit modification?

A: Yes. The AQY221R2S meets all electrical and mechanical specifications of the PS7200B-1A. The identical package footprint (4-SOP 0.173" / 4.40mm), gull wing termination, and electrical parameters (load voltage 0-40V, load current 250mA, input voltage 1.2VDC nominal) enable direct substitution without circuit redesign or PCB layout changes.

Q: What is the primary advantage of using AQY221R2S over the obsolete PS7200B-1A?

A: The AQY221R2S is in active production with confirmed long-term availability. Additionally, it carries ROHS3 compliance certification, meeting current environmental and regulatory requirements. The superior on-state resistance (1.25 Ohms maximum) provides lower power dissipation compared to the PS7200B-1A specification.

Q: Why is the CPC1030N not recommended as a direct substitute?

A: The CPC1030N has a maximum load current rating of 120 mA, which is 52% below the PS7200B-1A requirement of 250 mA. Using this part in a 250 mA application would exceed its rated capacity. Additionally, the on-state resistance of 30 Ohms creates excessive power dissipation compared to the 1.5 Ohm specification of the original part.

Q: Are there package compatibility concerns between these parts?

A: The AQY221R2S uses an identical 4-SOP package (0.173" / 4.40mm) with gull wing termination, ensuring full PCB footprint compatibility. The CPC1030N uses a slightly smaller 4-SOP package (0.150" / 3.81mm), which may require PCB layout verification before substitution, though the gull wing termination remains compatible.

Q: What load voltage range should be considered when selecting a substitute?

A: The PS7200B-1A operates across 0 V to 40 V load voltage. The AQY221R2S maintains this identical range. The CPC1030N extends to 350 V, which is beneficial only if your application requires higher voltage switching. For standard 0-40V applications, both parts are functionally equivalent in this parameter.

Q: How do input voltage specifications affect substitution?

A: The PS7200B-1A requires 1.2 VDC input. The AQY221R2S operates at 1.14 VDC, which is within acceptable tolerance for standard logic-level control circuits. The CPC1030N also operates at 1.2 VDC. Both substitutes are compatible with control circuits designed for the original part.