S3022A Equivalent & Substitute Parts

Part Overview

The S3022A is a solid-state relay (SSR) manufactured by Sensata-Crydom, configured as a SPST-NO (Single Pole Single Throw - Normally Open) module with 1 Form A circuit. This component is rated for 3A load current at 40-280V AC output with zero-cross switching capability and 4.6-8VDC input control voltage. The product is currently obsolete, making identification of suitable substitute components essential for system maintenance, repair, and redesign applications.

Substiute Parts

S3022A

Sensata-CrydomIn Stock: 1139S3022A Datasheet

Current PartRFQ

LR600240D25

Sensata-CrydomIn Stock: 3197LR600240D25 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the S3022A is determined by the following critical parameters:

• Circuit configuration must remain SPST-NO (1 Form A)
• Output switching type must be AC with zero-cross capability
• Load voltage range must encompass or exceed the 40-280V specification
• Load current rating must meet or exceed 3A
• Input control voltage must be compatible with 4.6-8VDC or provide overlapping range
• Mounting type and termination style must remain Through Hole with PC Pin configuration
• Package form factor must be Module type

The LR600240D25 satisfies these substitution criteria while offering enhanced current capacity and expanded input voltage range.

Parameter Comparison

Engineering Selection Recommendations

The LR600240D25 is the designated substitute for the obsolete S3022A based on the following factors:

• Both components share identical circuit topology (SPST-NO, 1 Form A) and switching characteristics (AC, zero-cross)
• The LR600240D25 maintains full backward compatibility with the S3022A's input voltage range (4-32VDC encompasses 4.6-8VDC) and load voltage specification (24-280V encompasses 40-280V)
• The LR600240D25 provides enhanced load current capacity (25A versus 3A), allowing operation in higher-power applications while remaining suitable for the original 3A requirement
• Both components feature identical Through Hole mounting with PC Pin termination, ensuring mechanical compatibility in existing PCB layouts
• The LR600240D25 is in active production status with ROHS3 compliance and REACH Affected designation, providing long-term supply assurance
• Moisture sensitivity rating remains unchanged at MSL 1 (Unlimited)

Frequently Asked Questions (FAQ)

Q: Can the LR600240D25 directly replace the S3022A in existing designs?

A: Yes. The LR600240D25 maintains identical circuit configuration, output switching type, mounting style, and termination method. The input voltage range and load voltage range of the LR600240D25 fully encompass the S3022A specifications. The higher current rating (25A) does not prevent operation at the original 3A load level.

Q: What are the key differences between these two parts?

A: The primary differences are load current capacity (3A versus 25A), input voltage range (4.6-8VDC versus 4-32VDC), minimum load voltage (40V versus 24V), and product status (Obsolete versus Active). The LR600240D25 represents an enhanced version within the same product family.

Q: Are there any mechanical compatibility concerns?

A: No. Both components use identical Through Hole mounting with PC Pin termination in Module package form factor. PCB layout and footprint compatibility is maintained.

Q: What compliance certifications apply to the substitute part?

A: The LR600240D25 is ROHS3 compliant and REACH Affected. The original S3022A is REACH Unaffected. Both components carry EAR99 ECCN classification.

Q: Is the LR600240D25 suitable for applications requiring exactly 3A load current?

A: Yes. The LR600240D25 is rated for 25A maximum load current, which means it operates safely at any current level up to and including 3A. The component is suitable for both the original application and higher-current applications.

Q: What is the inventory status of these parts?

A: The S3022A has 1075 pieces in stock as new original inventory. The LR600240D25 has 3177 pieces in stock as new original inventory in bulk packaging.