CMD4825 Solid State Relay SPST-NO 25A 48-530V Equivalent & Substitute Parts

Part Overview

The CMD4825 is a solid state relay (SSR) with SPST-NO (1 Form A) configuration, rated for 25A load current and 48-530V AC output voltage. This component features a hockey puck form factor with screw terminal connections and zero-cross switching capability. The CMD4825 is classified as "Not For New Designs," making identification of active equivalent and substitute parts essential for ongoing maintenance, repair, and legacy system support applications.

Substiute Parts

CMD4825

Sensata TechnologiesIn Stock: 1178CMD4825 Datasheet

Current PartRFQ

84137110

Sensata-CrydomIn Stock: 112184137110 Datasheet

MFR RecommendedRFQ

CWD4825-10

Sensata-CrydomIn Stock: 815CWD4825-10 Datasheet

MFR RecommendedRFQ

HD4825

Sensata-CrydomIn Stock: 1081HD4825 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the CMD4825 is determined by the following critical parameters:

• Circuit Configuration: Must be SPST-NO (1 Form A)
• Load Current Rating: Must be 25 A
• Package / Case: Must be Hockey Puck form factor
• Mounting Type: Must be Chassis Mount
• Termination Style: Must be Screw Terminal
• Input Voltage Range: Must accommodate 4 ~ 32 VDC minimum
• Load Voltage Range: Must support at least 48 V ~ 530 V
• Output Type: Must be AC with zero-cross switching capability

Three substitute parts meet these criteria and are manufactured by Sensata-Crydom with active product status: 84137110, CWD4825-10, and HD4825. All three maintain identical circuit configuration, current rating, package form factor, and termination style. Load voltage and input voltage ranges are either equivalent or exceed the CMD4825 specifications.

Parameter Comparison

Engineering Selection Recommendations

All three substitute parts—84137110, CWD4825-10, and HD4825—are manufactured by Sensata-Crydom and carry active product status, making them suitable for applications requiring the CMD4825 functionality.

84137110 provides the highest load voltage capability at 48-660V and maintains zero-cross switching output. This part carries ROHS3 compliance and REACH Affected status.

CWD4825-10 extends load voltage to 48-660V and carries ROHS3 compliance with REACH Affected status. Output type is AC without zero-cross specification.

HD4825 matches the original CMD4825 load voltage range of 48-530V and includes zero-cross switching output. Input voltage range extends to 3VDC minimum. This part carries ROHS3 compliance with REACH Affected status.

Selection between these three parts depends on specific application requirements regarding load voltage range, zero-cross switching necessity, and minimum input voltage threshold.

Frequently Asked Questions (FAQ)

Q: Can the 84137110 replace the CMD4825 in all applications?

A: The 84137110 maintains identical circuit configuration, current rating, package form factor, and termination style. Load voltage range extends from 48-530V to 48-660V, and zero-cross switching is preserved. Substitution is electrically compatible for applications operating within the original 48-530V range.

Q: What is the difference between CWD4825-10 and HD4825?

A: Both parts share identical circuit configuration, current rating, package, and termination. CWD4825-10 provides extended load voltage to 660V but does not specify zero-cross switching. HD4825 maintains the original 530V load voltage limit with zero-cross switching and extends minimum input voltage to 3VDC.

Q: Is the hockey puck form factor identical across all substitute parts?

A: Yes. All substitute parts—84137110, CWD4825-10, and HD4825—use the hockey puck package form factor with chassis mount configuration and screw terminal connections, ensuring mechanical and electrical interface compatibility.

Q: Does the CMD4825 "Not For New Designs" status affect substitution eligibility?

A: The CMD4825 status indicates it is obsolete for new product development. The three substitute parts carry active product status and are recommended for replacement in legacy system maintenance and repair applications.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All three substitute parts—84137110, CWD4825-10, and HD4825—carry ROHS3 compliance, exceeding the original CMD4825 RoHS compliance level.