Sensata-Crydom CMA2425 Solid State Relay SPST-NO 25A 24-280V Equivalent & Substitute Parts

Part Overview

The Sensata-Crydom CMA2425 is a solid state relay (SSR) with SPST-NO (1 Form A) configuration, rated for 25A load current and 24V to 280V output voltage. This hockey puck-style relay features screw terminal connections and zero-cross AC output switching. The CMA2425 is classified as Last Time Buy, indicating discontinued production. Equivalent and substitute parts from the Sensata-Crydom product line provide active alternatives with identical electrical and mechanical specifications.

Substiute Parts

CMA2425

Sensata-CrydomIn Stock: 628CMA2425 Datasheet

Current PartRFQ

84137011

Sensata-CrydomIn Stock: 103184137011 Datasheet

MFR RecommendedRFQ

A2425

Sensata-CrydomIn Stock: 1071A2425 Datasheet

MFR RecommendedRFQ

CWA2425

Sensata-CrydomIn Stock: 1154CWA2425 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the CMA2425 is determined by electrical and mechanical parameter equivalence. All substitute parts maintain identical circuit configuration (SPST-NO), output type (AC, Zero Cross), load current rating (25A), load voltage range (24V ~ 280V), mounting type (Chassis Mount), package style (Hockey Puck), and termination style (Screw Terminal). The substitute parts 84137011, A2425, and CWA2425 are functionally equivalent alternatives that satisfy these core parameters. Differences in input voltage range, product status, and compliance certifications do not affect substitution eligibility within the same electrical and mechanical classification.

Parameter Comparison

Engineering Selection Recommendations

The CMA2425 is designated Last Time Buy, requiring transition to an active product line equivalent. All three substitute parts—84137011, A2425, and CWA2425—are classified as Active and maintain full electrical and mechanical compatibility with the CMA2425. The substitute parts carry ROHS3 compliance, exceeding the RoHS compliance level of the original part. Selection among the three active alternatives should be based on supply chain availability and internal procurement requirements, as all three satisfy identical functional and compliance criteria.

Frequently Asked Questions (FAQ)

Q: Can the CMA2425 be directly replaced with 84137011, A2425, or CWA2425?

A: Yes. All three substitute parts maintain identical circuit configuration (SPST-NO), output type (AC, Zero Cross), load current rating (25A), load voltage range (24V ~ 280V), mounting type (Chassis Mount), package style (Hockey Puck), and termination style (Screw Terminal). Direct substitution is electrically and mechanically valid.

Q: What is the difference between the input voltage specifications of the CMA2425 and its substitutes?

A: The CMA2425 specifies input voltage of 90 ~ 140VAC, while the substitute parts specify 90 ~ 280VAC. The substitute parts accept a wider input voltage range. This difference does not prevent substitution in applications operating within the CMA2425 input range.

Q: Why is the CMA2425 designated Last Time Buy?

A: Last Time Buy status indicates the manufacturer has discontinued production of this part number. The active substitute parts (84137011, A2425, CWA2425) provide equivalent functionality and are recommended for new designs and ongoing production requirements.

Q: Are there compliance differences between the CMA2425 and substitute parts?

A: The CMA2425 carries RoHS compliance certification. The substitute parts carry ROHS3 compliance, which represents an enhanced compliance standard. Both compliance levels are acceptable for substitution purposes.

Q: What is the hockey puck package style?

A: The hockey puck package is a cylindrical chassis-mount form factor used for solid state relays. All parts in this substitution group use this identical package style, ensuring mechanical compatibility in existing mounting configurations.