S3012A Equivalent & Substitute Parts

Part Overview

The S3012A 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 20-140V AC output with zero-cross switching capability. The product is classified as obsolete, making identification of suitable substitute components essential for ongoing system maintenance and new design implementations where equivalent functionality is required.

Substiute Parts

S3012A

Sensata-CrydomIn Stock: 2106S3012A Datasheet

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LR600240D25

Sensata-CrydomIn Stock: 3197LR600240D25 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the S3012A is determined by the following critical parameters:

• Circuit Configuration: Must maintain SPST-NO (1 Form A) topology for direct functional replacement
• Output Type: AC output with zero-cross switching capability is required for equivalent operation
• Mounting and Termination: Through-hole mounting with PC pin termination ensures mechanical and electrical compatibility
• Package Type: Module-level packaging maintains form factor consistency

The LR600240D25 qualifies as a substitute based on matching circuit configuration, output type, mounting method, and termination style. While this substitute exhibits higher current rating (25A vs 3A) and expanded voltage ranges, these parameters represent enhanced capability within the same product family and do not preclude substitution in applications designed for the original S3012A specifications.

Parameter Comparison

Engineering Selection Recommendations

The LR600240D25 is an active product with ROHS3 compliance and REACH affected status, providing regulatory continuity for new designs and system updates. The S3012A, classified as obsolete, no longer receives manufacturer support or inventory replenishment. Selection of the LR600240D25 as a substitute is supported by identical circuit topology, output switching characteristics, and mechanical interface specifications. The substitute's higher current and voltage ratings do not compromise compatibility in applications operating within the original S3012A design envelope.

Frequently Asked Questions (FAQ)

Q: Can the LR600240D25 directly replace the S3012A in existing designs?

A: Yes. Both components share identical SPST-NO circuit configuration, AC zero-cross output type, through-hole mounting, and PC pin termination. The substitute's enhanced current and voltage ratings are backward-compatible with S3012A applications.

Q: What are the key differences between these parts?

A: The LR600240D25 provides higher load current capacity (25A vs 3A), expanded input voltage range (4-32VDC vs 4.6-8VDC), and extended load voltage range (24-280V vs 20-140V). These represent capability enhancements rather than functional deviations.

Q: Are there compliance or regulatory differences?

A: The LR600240D25 is ROHS3 compliant and REACH affected, while the S3012A is REACH unaffected. Both carry EAR99 ECCN classification. New designs should prioritize the LR600240D25 for regulatory alignment.

Q: Does packaging differ between these components?

A: Both components are supplied in module-level packaging with PC pin termination. The LR600240D25 is available in bulk packaging, while the S3012A packaging specification is not detailed. Mechanical form factor remains consistent.

Q: What is the input voltage compatibility consideration?

A: The S3012A operates at 4.6-8VDC input, while the LR600240D25 accepts 4-32VDC input. Applications using input voltages below 4VDC require verification of LR600240D25 performance at the lower threshold, though the 4.6-4VDC range represents marginal operation for the original design.