CMA4875 Equivalent & Substitute Parts

Part Overview

The CMA4875 is a solid-state relay (SSR) manufactured by Sensata-Crydom, classified as a SPST-NO (1 Form A) hockey puck configuration. This component is designed for AC load switching applications with a rated load current of 75A and operates across a voltage range of 48V to 530V. The part is currently in active production status with 763 units available in new original inventory. Equivalent and substitute parts are identified to provide procurement flexibility, support supply chain continuity, and accommodate application-specific voltage or input requirements.

Substiute Parts

CMA4875

Sensata-CrydomIn Stock: 845CMA4875 Datasheet

Current PartRFQ

84137131

Sensata-CrydomIn Stock: 116684137131 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the CMA4875 are identified based on electrical and mechanical compatibility within the following critical parameters:

• Circuit Configuration: SPST-NO (1 Form A) topology must remain constant
• Output Type: AC, Zero Cross operation required
• Load Current Rating: 75 A fixed requirement
• Package / Case: Hockey Puck form factor for mechanical interchangeability
• Mounting Type: Chassis Mount configuration
• Termination Style: Screw Terminal interface
• RoHS Compliance: Required for regulatory alignment

Substitution is permitted when the substitute part maintains these core parameters while potentially offering extended input voltage range or increased maximum load voltage rating. The substitute part 84137131 meets all mechanical and functional requirements while providing an expanded input voltage range (90 ~ 280 VAC) and higher maximum load voltage (48 V ~ 660 V).

Parameter Comparison

Engineering Selection Recommendations

The CMA4875 and 84137131 are functionally equivalent for applications requiring SPST-NO solid-state relay operation at 75A load current with hockey puck packaging and screw terminal termination. Both parts are manufactured by Sensata-Crydom, carry active product status, and maintain RoHS compliance.

Selection between these parts is determined by application voltage requirements:

• CMA4875: Select when input voltage is constrained to 90 ~ 140 VAC and maximum load voltage does not exceed 530V
• 84137131: Select when input voltage may reach 280 VAC or when maximum load voltage requirement extends to 660V

Both parts are suitable for direct substitution in applications where the voltage parameters of the substitute part encompass the original design specification. The substitute part 84137131 provides extended operational range and may be used as a universal replacement in new designs or procurement scenarios where supply of the original CMA4875 is limited.

Frequently Asked Questions (FAQ)

Q: Can 84137131 be used as a direct replacement for CMA4875?

A: Yes. The 84137131 maintains identical circuit configuration (SPST-NO), output type (AC, Zero Cross), load current rating (75A), package form factor (Hockey Puck), mounting type (Chassis Mount), and termination style (Screw Terminal). The substitute part is electrically and mechanically interchangeable for all applications within the CMA4875 voltage specifications.

Q: What are the key differences between CMA4875 and 84137131?

A: The primary differences are input voltage range and maximum load voltage rating. The CMA4875 accepts 90 ~ 140 VAC input and supports loads up to 530V. The 84137131 accepts 90 ~ 280 VAC input and supports loads up to 660V. Both parts are identical in all other functional and mechanical parameters.

Q: Which part should be selected for new designs?

A: Selection depends on the application voltage requirements. If the design requires input voltage capability beyond 140 VAC or load voltage beyond 530V, the 84137131 is the appropriate choice. If the application is constrained to the CMA4875 voltage specifications, either part may be used.

Q: Are both parts RoHS compliant?

A: Yes. Both CMA4875 and 84137131 are RoHS compliant and suitable for applications requiring environmental and regulatory compliance.

Q: What is the packaging difference between these parts?

A: CMA4875 is supplied in standard packaging, while 84137131 is supplied in bulk packaging. Both parts use identical hockey puck form factor and screw terminal termination. Packaging type does not affect electrical or mechanical compatibility.

Q: Are there any MSL (Moisture Sensitivity Level) considerations?

A: CMA4875 has MSL not applicable. The 84137131 has MSL 1 (Unlimited), indicating no moisture sensitivity restrictions for either part during storage or handling.