Equivalent & Substitute Parts: CMA4890

Part Overview

The CMA4890 is a solid-state relay (SSR) with SPST-NO (1 Form A) configuration, rated for 90A load current at 48–530V AC output with zero-cross switching. Manufactured by Sensata-Crydom, this chassis-mount hockey puck relay is designed for industrial AC switching applications requiring high current capacity and wide voltage range operation. The part is currently active in production and RoHS compliant. Substitute parts are identified to provide alternative sourcing options when the primary part is unavailable or when application requirements align with enhanced specifications.

Substiute Parts

CMA4890

Sensata-CrydomIn Stock: 895CMA4890 Datasheet

Current PartRFQ

84137141

Sensata-CrydomIn Stock: 70884137141 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the CMA4890 is determined by compatibility across the following critical parameters:

• Circuit Configuration: Must remain SPST-NO (1 Form A)
• Output Type: Must be AC with zero-cross switching capability
• Mounting Type: Must be chassis mount
• Package Type: Must be hockey puck form factor
• Termination Style: Must use screw terminals
• Load Current Rating: Substitute must meet or exceed 90A
• Load Voltage Range: Substitute must cover or exceed 48–530V
• Input Voltage Range: Substitute must accommodate 90–140VAC control signal
• Compliance: RoHS compliance required

The substitute part 84137141 meets all substitution criteria with enhanced specifications in load current (100A) and load voltage range (48–660V), while maintaining identical circuit topology, mounting configuration, and termination style.

Parameter Comparison

Engineering Selection Recommendations

Both the CMA4890 and 84137141 are active production parts from Sensata-Crydom with full RoHS compliance. The 84137141 provides enhanced specifications: input voltage range extends to 280VAC (versus 140VAC), load voltage maximum increases to 660V (versus 530V), and load current rating increases to 100A (versus 90A). Both parts maintain identical circuit topology, mounting configuration, and termination style, ensuring mechanical and electrical compatibility in applications designed for the CMA4890. The 84137141 is suitable for applications requiring higher input voltage tolerance or greater load capacity margins. Selection between these parts depends on application voltage and current requirements within the specified ranges.

Frequently Asked Questions (FAQ)

Q: Can the 84137141 directly replace the CMA4890 in existing applications?

A: Yes. Both parts share identical circuit configuration (SPST-NO), output type (AC zero-cross), mounting type (chassis mount), package type (hockey puck), and termination style (screw terminal). The 84137141 has higher current and voltage ratings, making it suitable for CMA4890 applications.

Q: What are the key differences between CMA4890 and 84137141?

A: The 84137141 offers higher input voltage range (90–280VAC versus 90–140VAC), higher load voltage maximum (660V versus 530V), and higher load current rating (100A versus 90A). Both maintain the same physical form factor and control interface.

Q: Are both parts RoHS compliant?

A: Yes. The CMA4890 is RoHS Compliant. The 84137141 is ROHS3 Compliant, representing a more recent compliance standard.

Q: What determines whether a part can substitute for the CMA4890?

A: Substitutes must maintain SPST-NO circuit configuration, AC zero-cross output type, chassis mount configuration, hockey puck package, screw terminal termination, and meet or exceed the 90A load current and 48–530V load voltage specifications.

Q: Can I use the CMA4890 in applications rated for the 84137141?

A: No. The CMA4890 has lower current (90A versus 100A) and voltage (530V maximum versus 660V) ratings. Use only in applications within its specified 90A and 48–530V limits.

Q: What is the significance of the hockey puck package type?

A: The hockey puck form factor is a standardized industrial SSR package with defined mechanical dimensions and mounting interface. Both parts use this package, ensuring identical mounting compatibility and thermal characteristics in chassis-mount applications.